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Ewald VAM, Purnell JR, Bruss JE, Barsotti EJ, Aldine AS, Mahachi KG, Wemmie JA, Magnotta VA, Boes AD, Parker KL, Fiedorowicz JG. Posterior Fossa Sub-Arachnoid Cysts Observed in Patients with Bipolar Disorder: a Retrospective Cohort Study. CEREBELLUM (LONDON, ENGLAND) 2023; 22:370-378. [PMID: 35568792 PMCID: PMC9659668 DOI: 10.1007/s12311-022-01408-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/12/2022] [Indexed: 11/29/2022]
Abstract
Posterior fossa arachnoid cysts (PFACs) are rare congenital abnormalities observed in 0.3 to 1.7% of the population and are traditionally thought to be benign. While conducting a neuroimaging study investigating cerebellar structure in bipolar disorder, we observed a higher incidence of PFACs in bipolar patients (5 of 75; 6.6%) compared to the neuronormative control group (1 of 54; 1.8%). In this report, we detail the cases of the five patients with bipolar disorder who presented with PFACs. Additionally, we compare neuropsychiatric measures and cerebellar volumes of these patients to neuronormative controls and bipolar controls (those with bipolar disorder without neuroanatomical abnormalities). Our findings suggest that patients with bipolar disorder who also present with PFACs may have a milder symptom constellation relative to patients with bipolar disorder and no neuroanatomical abnormalities. Furthermore, our observations align with prior literature suggesting an association between PFACs and psychiatric symptoms that warrants further study. While acknowledging sample size limitations, our primary aim in the present work is to highlight a connection between PFACs and BD-associated symptoms and encourage further study of cerebellar abnormalities in psychiatry.
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Affiliation(s)
- Victόria A Müller Ewald
- Department of Psychiatry, The University of Iowa, 195-207 Newton Road, Iowa City, IA, 52246, USA
| | - Jessica R Purnell
- Department of Psychiatry, The University of Iowa, 195-207 Newton Road, Iowa City, IA, 52246, USA
| | - Joel E Bruss
- Department of Neurology, The University of Iowa, Iowa City, IA, USA
| | - Ercole J Barsotti
- Department of Epidemiology, The University of Iowa, Iowa City, IA, USA
| | - Amro S Aldine
- Department of Radiology, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - Kurayi G Mahachi
- Department of Epidemiology, The University of Iowa, Iowa City, IA, USA
| | - John A Wemmie
- Department of Psychiatry, The University of Iowa, 195-207 Newton Road, Iowa City, IA, 52246, USA
| | - Vincent A Magnotta
- Department of Psychiatry, The University of Iowa, 195-207 Newton Road, Iowa City, IA, 52246, USA
- Department of Radiology, The University of Iowa, Iowa City, IA, USA
- Department of Biomedical Engineering, The University of Iowa, Iowa City, IA, USA
| | - Aaron D Boes
- Department of Psychiatry, The University of Iowa, 195-207 Newton Road, Iowa City, IA, 52246, USA
- Department of Pediatrics, The University of Iowa, Iowa City, IA, USA
| | - Krystal L Parker
- Department of Psychiatry, The University of Iowa, 195-207 Newton Road, Iowa City, IA, 52246, USA.
| | - Jess G Fiedorowicz
- Brain and Mind Institute, University of Ottawa, The Ottawa Hospital and Ottawa Hospital Research Institute, Ottawa, ON, Canada
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Associations between neurofilament light-chain protein, brain structure, and chronic kidney disease. Pediatr Res 2022; 91:1735-1740. [PMID: 34274959 PMCID: PMC8761779 DOI: 10.1038/s41390-021-01649-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/24/2021] [Accepted: 06/30/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Neurofilament light-chain (NfL) protein is a blood-based marker of neuroaxonal injury. We sought to (1) compare plasma NfL levels in children with chronic kidney disease (CKD) and healthy peers, (2) characterize the relationship between NfL level and kidney function, and (3) evaluate NfL as a predictor of abnormal brain structure in CKD. METHODS Sixteen children with CKD due to congenital kidney anomalies and 23 typically developing peers were included. Plasma NfL was quantified using single-molecule array immunoassay. Participants underwent structural magnetic resonance imaging. Multiple linear regression models were used to evaluate the association between plasma NfL levels, kidney function, and brain structure. RESULTS An age × group interaction was identified whereby NfL levels increased with age in the CKD group only (estimate = 0.65; confidence interval (CI) = 0.08-1.22; p = 0.026). Decreased kidney function was associated with higher NfL levels (estimate = -0.10; CI = -0.16 to -0.04; p = 0.003). Lower cerebellar gray matter volume predicted increased plasma NfL levels (estimate = -0.00024; CI = -0.00039 to 0.00009; p = 0.004) within the CKD group. CONCLUSIONS Children with CKD show accelerated age-related increases in NfL levels. NfL level is associated with lower kidney function and abnormal brain structure in CKD. IMPACT NfL is a component of the neuronal cytoskeleton providing structural axonal support. Elevated NfL has been described in relation to gray and white matter brain volume loss. We have previously described the abnormal cerebellar gray matter in CKD. We explored the relationship between NfL, CKD, and brain volume. There is an accelerated, age-related increase in NfL level in CKD. Within the CKD sample, NfL level is associated with abnormal kidney function and brain structure. Decreased kidney function may be linked to abnormal neuronal integrity in pediatric CKD.
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Distinct patterns of altered quantitative T1ρ and functional BOLD response associated with history of suicide attempts in bipolar disorder. Brain Imaging Behav 2022; 16:820-833. [PMID: 34601647 PMCID: PMC8975910 DOI: 10.1007/s11682-021-00552-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2021] [Indexed: 10/20/2022]
Abstract
Despite the high risk for suicide, relatively few studies have explored the relationship between suicide and brain imaging measures in bipolar disorder. In addition, fewer studies have explored the possibility that altered brain metabolism may be associated with suicide attempt. To begin to fill in these gaps, we evaluated functional (task based fMRI) and metabolic (quantitative T1ρ) differences associated with suicide attempt in participants with bipolar disorder. Thirty-nine participants with bipolar disorder underwent fMRI during a flashing checkerboard task and 27 also underwent quantitative T1ρ. The relationship between neuroimaging and history of suicide attempt was tested using multiple regression while adjusting for age, sex, and current mood state. Differences between two measures of suicide attempt (binary: yes/no and continuous: number of attempts) were quantified using the corrected Akaike Information Criterion. Participants who had attempted suicide had greater fMRI task-related activation in visual areas and the cerebellum. The number of suicide attempts was associated with a difference in BOLD response in the amygdala, prefrontal cortex, and cerebellum. Increased quantitative T1ρ was associated with number of suicide attempts in limbic, basal ganglia, and prefrontal cortex regions. This study is a secondary analysis with a modest sample size. Differences between measures of suicide history may be due to differences in statistical power. History of suicide was associated with limbic, prefrontal, and cerebellar alterations. Results comparing those with and without suicide attempts differed from results using number of suicide attempts, suggesting that these variables have different neurobiological underpinnings.
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Konuthula N, Perez FA, Maga AM, Abuzeid WM, Moe K, Hannaford B, Bly RA. Automated atlas-based segmentation for skull base surgical planning. Int J Comput Assist Radiol Surg 2021; 16:933-941. [PMID: 34009539 DOI: 10.1007/s11548-021-02390-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 04/27/2021] [Indexed: 11/26/2022]
Abstract
PURPOSE Computational surgical planning tools could help develop novel skull base surgical approaches that improve safety and patient outcomes. This defines a need for automated skull base segmentation to improve the usability of surgical planning software. The objective of this work was to design and validate an algorithm for atlas-based automated segmentation of skull base structures in individual image sets for skull base surgical planning. METHODS Advanced Normalization Tools software was used to construct a synthetic CT template from 6 subjects, and skull base structures were manually segmented to create a reference atlas. Landmark registration followed by Elastix deformable registration was applied to the template to register it to each of the 30 trusted reference image sets. Dice coefficient, average Hausdorff distance, and clinical usability scoring were used to compare the atlas segmentations to those of the trusted reference image sets. RESULTS The mean for average Hausdorff distance for all structures was less than 2 mm (mean for 95th percentile Hausdorff distance was less than 5 mm). For structures greater than 2.5 mL in volume, the average Dice coefficient was 0.73 (range 0.59-0.82), and for structures less than 2.5 mL in volume the Dice coefficient was less than 0.7. The usability scoring survey was completed by three experts, and all structures met the criteria for acceptable effort except for the foramen spinosum, rotundum, and carotid artery, which required more than minor corrections. CONCLUSION Currently available open-source algorithms, such as the Elastix deformable algorithm, can be used for automated atlas-based segmentation of skull base structures with acceptable clinical accuracy and minimal corrections with the use of the proposed atlas. The first publicly available CT template and anterior skull base segmentation atlas being released (available at this link: http://hdl.handle.net/1773/46259 ) with this paper will allow for general use of automated atlas-based segmentation of the skull base.
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Affiliation(s)
- Neeraja Konuthula
- Department of Otolaryngology, Head and Neck Surgery, University of Washington, Seattle, WA, USA
| | - Francisco A Perez
- Department of Radiology, University of Washington, Seattle, WA, USA
- Division of Radiology, Seattle Children's Hospital, Seattle, WA, USA
| | - A Murat Maga
- Department of Craniofacial Medicine, University of Washington, Seattle, WA, USA
- Craniofacial Center, Seattle Children's Hospital, Seattle, WA, USA
| | - Waleed M Abuzeid
- Department of Otolaryngology, Head and Neck Surgery, University of Washington, Seattle, WA, USA
| | - Kris Moe
- Department of Otolaryngology, Head and Neck Surgery, University of Washington, Seattle, WA, USA
- Otolaryngology-Head and Neck Surgery, Harborview Medical Center, Seattle, WA, USA
| | - Blake Hannaford
- Department of Electrical and Computer Engineering, University of Washington, Seattle, WA, USA
| | - Randall A Bly
- Department of Otolaryngology, Head and Neck Surgery, University of Washington, Seattle, WA, USA.
- Division of Pediatric Otolaryngology, Head and Neck Surgery, Seattle Children's Hospital, Seattle, WA, USA.
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Conrad AL, Kuhlmann E, van der Plas E, Axelson E. Brain structure and neural activity related to reading in boys with isolated oral clefts. Child Neuropsychol 2021; 27:621-640. [PMID: 33557685 DOI: 10.1080/09297049.2021.1879765] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Background: The purpose of this study was to evaluate brain structure and function in participants with iCL/P and unaffected controls. Effects of cleft presence and reading status (average vs impaired) were evaluated.Methods: Males, ages 8-11 years old, including 26 with iCL/P and 57 unaffected peers were recruited and coded for reading status (average vs impaired). All participants underwent a volumetric and task-based functional MRI. Volumes and significant regions of activation during the decoding task were obtained. Main effects of cleft and reading status, and their interaction were evaluated.Results: Participants with iCL/P had significantly increased frontal gray matter volume (associated with average reading) and occipital gray and white matter volume (associated with impaired reading). Impaired readers with iCL/P had a distinctive activation pattern in visual association and motor regions relative to other groups.Conclusions: Findings suggest that increases in frontal gray matter volume may be associated with effective compensation during reading, while posterior increases in occipital volume may be associated with ineffective compensation for participants with iCL/P. These patterns were different from idiopathic dyslexia. Further work in a larger sample is needed to determine if these differences are associated with cleft type and with sex.Abbreviations: iCL/P (isolated cleft lip and/or palate); iCL (isolated cleft lip only); iCLP (isolated cleft lip and palate); iCP (isolated cleft palate only); uAR (unaffected average reader); uIR (unaffected impaired reader); cAR (average reader with iCL/P); cIR (impaired reader with iCL/P).
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Affiliation(s)
- Amy Lynn Conrad
- The Stead Family Department of Pediatrics, University of Iowa Roy J and Lucille A Carver College of Medicine, Iowa City, IA, USA
| | - Emily Kuhlmann
- The Stead Family Department of Pediatrics, University of Iowa Roy J and Lucille A Carver College of Medicine, Iowa City, IA, USA
| | - Ellen van der Plas
- Department of Psychiatry, University of Iowa Roy J and Lucille A Carver College of Medicine, Iowa City, IA, USA
| | - Eric Axelson
- Department of Psychiatry, University of Iowa Roy J and Lucille A Carver College of Medicine, Iowa City, IA, USA
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Li H, Zhang H, Johnson H, Long JD, Paulsen JS, Oguz I. MRI subcortical segmentation in neurodegeneration with cascaded 3D CNNs. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2021; 11596:115960W. [PMID: 34873359 PMCID: PMC8643361 DOI: 10.1117/12.2582005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The subcortical structures of the brain are relevant for many neurodegenerative diseases like Huntington's disease (HD). Quantitative segmentation of these structures from magnetic resonance images (MRIs) has been studied in clinical and neuroimaging research. Recently, convolutional neural networks (CNNs) have been successfully used for many medical image analysis tasks, including subcortical segmentation. In this work, we propose a 2-stage cascaded 3D subcortical segmentation framework, with the same 3D CNN architecture for both stages. Attention gates, residual blocks and output adding are used in our proposed 3D CNN. In the first stage, we apply our model to downsampled images to output a coarse segmentation. Next, we crop the extended subcortical region from the original image based on this coarse segmentation, and we input the cropped region to the second CNN to obtain the final segmentation. Left and right pairs of thalamus, caudate, pallidum and putamen are considered in our segmentation. We use the Dice coefficient as our metric and evaluate our method on two datasets: the publicly available IBSR dataset and a subset of the PREDICT-HD database, which includes healthy controls and HD subjects. We train our models on only healthy control subjects and test on both healthy controls and HD subjects to examine model generalizability. Compared with the state-of-the-art methods, our method has the highest mean Dice score on all considered subcortical structures (except the thalamus on IBSR), with more pronounced improvement for HD subjects. This suggests that our method may have better ability to segment MRIs of subjects with neurodegenerative disease.
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Affiliation(s)
- Hao Li
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235
| | - Huahong Zhang
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235
| | - Hans Johnson
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City, IA 52242
| | - Jeffrey D. Long
- Departments of Psychiatry and Biostatistics, University of Iowa, Iowa City, IA 52242
| | - Jane S. Paulsen
- Department of Neurology, University of Wisconsin, Madison, WI 53705
| | - Ipek Oguz
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235
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Early pediatric chronic kidney disease is associated with brain volumetric gray matter abnormalities. Pediatr Res 2021; 89:526-532. [PMID: 33069166 PMCID: PMC7981243 DOI: 10.1038/s41390-020-01203-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 09/03/2020] [Accepted: 09/10/2020] [Indexed: 11/09/2022]
Abstract
BACKGROUND The impact of pediatric chronic kidney disease (pCKD) on the brain remains poorly defined. The objective of this study was to compare brain morphometry between children with early-stage pCKD and typically developing peers using structural magnetic resonance imaging (MRI). METHODS The sample age range was 6-16 years. A total of 18 children with a diagnosis of pCKD (CKD stages 1-3) due to congenital anomalies of the kidney and urinary tract and 24 typically developing peers were included. Volumetric data from MRI and neurocognitive testing were compared using linear models including pCKD status, age, maternal education level, and socioeconomic status. RESULTS Cerebellar gray matter volume was significantly smaller in pCKD, t(38) = -2.71, p = 0.01. In contrast, cerebral gray matter volume was increased in pCKD, t(38) = 2.08, p = 0.04. Reduced cerebellum gray matter volume was associated with disease severity, operationalized as estimated glomerular filtration rate (eGFR), t(14) = 2.21, p = 0.04 and predicted lower verbal fluency scores in the pCKD sample. Enlarged cerebral gray matter in the pCKD sample predicted lower scores on mathematics assessment. CONCLUSIONS This study provides preliminary evidence for a morphometric underpinning to the cognitive deficits observed in pCKD. IMPACT The impact of pediatric chronic kidney disease (CKD) on the brain remains poorly defined, with no data linking brain morphometry and observed cognitive deficits noted in this population. We explored the relationship between brain morphometry (using structural magnetic resonance imaging), cognition, and markers of CKD. Cerebellar and cerebral gray matter volumes are different in early CKD. Volumetric decreases in cerebellar gray matter are predicted by lower eGFR, suggesting a link between disease and brain morphometry. Reduced cerebellar gray matter predicted lower verbal fluency for those with pCKD. Enlarged cerebral gray matter in the pCKD sample predicted lower mathematics performance.
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Li H, Zhang H, Johnson H, Long JD, Paulsen JS, Oguz I. Longitudinal subcortical segmentation with deep learning. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2021; 11596:115960D. [PMID: 34873358 PMCID: PMC8643360 DOI: 10.1117/12.2582340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Longitudinal information is important for monitoring the progression of neurodegenerative diseases, such as Huntington's disease (HD). Specifically, longitudinal magnetic resonance imaging (MRI) studies may allow the discovery of subtle intra-subject changes over time that may otherwise go undetected because of inter-subject variability. For HD patients, the primary imaging-based marker of disease progression is the atrophy of subcortical structures, mainly the caudate and putamen. To better understand the course of subcortical atrophy in HD and its correlation with clinical outcome measures, highly accurate segmentation is important. In recent years, subcortical segmentation methods have moved towards deep learning, given the state-of-the-art accuracy and computational efficiency provided by these models. However, these methods are not designed for longitudinal analysis, but rather treat each time point as an independent sample, discarding the longitudinal structure of the data. In this paper, we propose a deep learning based subcortical segmentation method that takes into account this longitudinal information. Our method takes a longitudinal pair of 3D MRIs as input, and jointly computes the corresponding segmentations. We use bi-directional convolutional long short-term memory (C-LSTM) blocks in our model to leverage the longitudinal information between scans. We test our method on the PREDICT-HD dataset and use the Dice coefficient, average surface distance and 95-percent Hausdorff distance as our evaluation metrics. Compared to cross-sectional segmentation, we improve the overall accuracy of segmentation, and our method has more consistent performance across time points. Furthermore, our method identifies a stronger correlation between subcortical volume loss and decline in the total motor score, an important clinical outcome measure for HD.
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Affiliation(s)
- Hao Li
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235
| | - Huahong Zhang
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235
| | - Hans Johnson
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City, IA 52242
| | - Jeffrey D. Long
- Departments of Psychiatry and Biostatistics, University of Iowa, Iowa City, IA 52242
| | - Jane S. Paulsen
- Department of Neurology, University of Wisconsin, Madison, WI 53705
| | - Ipek Oguz
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235
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Koscik TR, Sloat L, van der Plas E, Joers JM, Deelchand DK, Lenglet C, Öz G, Nopoulos PC. Brainstem and striatal volume changes are detectable in under 1 year and predict motor decline in spinocerebellar ataxia type 1. Brain Commun 2020; 2:fcaa184. [PMID: 33409488 PMCID: PMC7772094 DOI: 10.1093/braincomms/fcaa184] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/11/2020] [Accepted: 09/21/2020] [Indexed: 12/14/2022] Open
Abstract
Spinocerebellar ataxia type 1 is a progressive neurodegenerative, movement disorder. With potential therapies on the horizon, it is critical to identify biomarkers that (i) differentiate between unaffected and spinocerebellar ataxia Type 1-affected individuals; (ii) track disease progression; and (iii) are directly related to clinical changes of the patient. Magnetic resonance imaging of volumetric changes in the brain may be a suitable source of biomarkers for spinocerebellar ataxia Type 1. In a previous report on a longitudinal study of patients with spinocerebellar ataxia Type 1, we evaluated the volume and magnetic resonance spectroscopy measures of the cerebellum and pons, showing pontine volume and pontine N-acetylaspartate-to-myo-inositol ratio were sensitive to change over time. As a follow-up, the current study conducts a whole brain exploration of volumetric MRI measures with the aim to identify biomarkers for spinocerebellar ataxia Type 1 progression. We adapted a joint label fusion approach using multiple, automatically generated, morphologically matched atlases to label brain regions including cerebellar sub-regions. We adjusted regional volumes by total intracranial volume allowing for linear and power-law relationships. We then utilized Bonferroni corrected linear mixed effects models to (i) determine group differences in regional brain volume and (ii) identify change within affected patients only. We then evaluated the rate of change within each brain region to identify areas that changed most rapidly. Lastly, we used a penalized, linear mixed effects model to determine the strongest brain predictors of motor outcomes. Decrease in pontine volume and accelerating decrease in putamen volume: (i) reliably differentiated spinocerebellar ataxia Type 1-affected and -unaffected individuals; (ii) were observable in affected individuals without referencing an unaffected comparison group; (iii) were detectable within ∼6–9 months; and (iv) were associated with increased disease burden. In conclusion, volumetric change in the pons and putamen may provide powerful biomarkers to track disease progression in spinocerebellar ataxia Type 1. The methods employed here are readily translatable to current clinical settings, providing a framework for study and usage of volumetric neuroimaging biomarkers for clinical trials.
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Affiliation(s)
- Timothy R Koscik
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA 52242-1000, USA
| | - Lauren Sloat
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA 52242-1000, USA
| | - Ellen van der Plas
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA 52242-1000, USA
| | - James M Joers
- Department of Radiology, Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA
| | - Dinesh K Deelchand
- Department of Radiology, Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA
| | - Christophe Lenglet
- Department of Radiology, Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA
| | - Gülin Öz
- Department of Radiology, Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA
| | - Peggy C Nopoulos
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA 52242-1000, USA
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Li H, Zhang H, Hu D, Johnson H, Long JD, Paulsen JS, Oguz I. Generalizing MRI Subcortical Segmentation to Neurodegeneration. MACHINE LEARNING IN CLINICAL NEUROIMAGING AND RADIOGENOMICS IN NEURO-ONCOLOGY : THIRD INTERNATIONAL WORKSHOP, MLCN 2020, AND SECOND INTERNATIONAL WORKSHOP, RNO-AI 2020, HELD IN CONJUNCTION WITH MICCAI 2020, LIMA, PERU, OCTOBER 4-8, 2020... 2020; 12449:139-147. [PMID: 35695832 PMCID: PMC9175926 DOI: 10.1007/978-3-030-66843-3_14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Many neurodegenerative diseases like Huntington's disease (HD) affect the subcortical structures of the brain, especially the caudate and the putamen. Automated segmentation of subcortical structures from MRI scans is thus important in HD studies. LiviaNET [2] is the state-of-the-art deep learning approach for subcortical segmentation. As all learning-based models, this approach requires appropriate training data. While annotated healthy control images are relatively easy to obtain, generating such annotations for each new disease population can be prohibitively expensive. In this work, we explore LiviaNET variants using well-known strategies for improving performance, to make it more generalizable to patients with substantial neurodegeneration. Specifically, we explored Res-blocks in our convolutional neural network, and we also explored manipulating the input to the network as well as random elastic deformations for data augmentation. We tested our method on images from the PREDICT-HD dataset, which includes control and HD subjects. We trained on control subjects and tested on both controls and HD patients. Compared to the original LiviaNET, we improved the accuracy of most structures, both for controls and for HD patients. The caudate has the most pronounced improvement in HD subjects with the proposed modifications to LiviaNET, which is noteworthy since caudate is known to be severely atrophied in HD. This suggests our extensions may improve the generalization ability of LiviaNET to cohorts where significant neurodegeneration is present, without needing to be retrained.
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Affiliation(s)
- Hao Li
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, USA
| | - Huahong Zhang
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, USA
| | - Dewei Hu
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, USA
| | - Hans Johnson
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City, IA, USA
| | - Jeffrey D Long
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
- Department of Biostatistics, University of Iowa, Iowa City, IA, USA
| | - Jane S Paulsen
- Department of Neurology, University of Wisconsin, Madison, WI, USA
| | - Ipek Oguz
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, USA
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Hett K, Giraud R, Johnson H, Paulsen JS, Long JD, Oguz I. Patch-Based Abnormality Maps for Improved Deep Learning-Based Classification of Huntington's Disease. MEDICAL IMAGE COMPUTING AND COMPUTER-ASSISTED INTERVENTION : MICCAI ... INTERNATIONAL CONFERENCE ON MEDICAL IMAGE COMPUTING AND COMPUTER-ASSISTED INTERVENTION 2020; 12267:636-645. [PMID: 34873594 PMCID: PMC8643359 DOI: 10.1007/978-3-030-59728-3_62] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Deep learning techniques have demonstrated state-of-the-art performances in many medical imaging applications. These methods can efficiently learn specific patterns. An alternative approach to deep learning is patch-based grading methods, which aim to detect local similarities and differences between groups of subjects. This latter approach usually requires less training data compared to deep learning techniques. In this work, we propose two major contributions: first, we combine patch-based and deep learning methods. Second, we propose to extend the patch-based grading method to a new patch-based abnormality metric. Our method enables us to detect localized structural abnormalities in a test image by comparison to a template library consisting of images from a variety of healthy controls. We evaluate our method by comparing classification performance using different sets of features and models. Our experiments show that our novel patch-based abnormality metric increases deep learning performance from 91.3% to 95.8% of accuracy compared to standard deep learning approaches based on the MRI intensity.
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Affiliation(s)
- Kilian Hett
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, USA
| | - Rémi Giraud
- Bordeaux INP, University of Bordeaux, CNRS, IMS, UMR 5218, Talence, France
| | - Hans Johnson
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City, IA, USA
| | - Jane S Paulsen
- Department of Neurology, University of Wisconsin, Madison, WI, USA
| | - Jeffrey D Long
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
- Department of Biostatistics, University of Iowa, Iowa City, IA, USA
| | - Ipek Oguz
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, USA
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Subcortical T1-Rho MRI Abnormalities in Juvenile-Onset Huntington's Disease. Brain Sci 2020; 10:brainsci10080533. [PMID: 32784364 PMCID: PMC7463529 DOI: 10.3390/brainsci10080533] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/03/2020] [Accepted: 08/06/2020] [Indexed: 01/22/2023] Open
Abstract
Huntington’s disease (HD) is a fatal neurodegenerative disease caused by the expansion of cytosine-adenine-guanine (CAG) repeats in the huntingtin gene. An increased CAG repeat length is associated with an earlier disease onset. About 5% of HD cases occur under the age of 21 years, which are classified as juvenile-onset Huntington’s disease (JOHD). Our study aims to measure subcortical metabolic abnormalities in JOHD participants. T1-Rho (T1ρ) MRI was used to compare brain regions of 13 JOHD participants and 39 controls. Region-of-interest analyses were used to assess differences in quantitative T1ρ relaxation times. We found that the mean relaxation times in the caudate (p < 0.001), putamen (p < 0.001), globus pallidus (p < 0.001), and thalamus (p < 0.001) were increased in JOHD participants compared to controls. Furthermore, increased T1ρ relaxation times in these areas were significantly associated with lower volumes amongst participants in the JOHD group. These findings suggest metabolic abnormalities in brain regions previously shown to degenerate in JOHD. We also analyzed the relationships between mean regional T1ρ relaxation times and Universal Huntington’s Disease Rating Scale (UHDRS) scores. UHDRS was used to evaluate participants’ motor function, cognitive function, behavior, and functional capacity. Mean T1ρ relaxation times in the caudate (p = 0.003), putamen (p = 0.005), globus pallidus (p = 0.009), and thalamus (p = 0.015) were directly proportional to the UHDRS score. This suggests that the T1ρ relaxation time may also predict HD-related motor deficits. Our findings suggest that subcortical metabolic abnormalities drive the unique hypokinetic symptoms in JOHD.
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Hett K, Johnson H, Coupé P, Paulsen JS, Long JD, Oguz I. TENSOR-BASED GRADING: A NOVEL PATCH-BASED GRADING APPROACH FOR THE ANALYSIS OF DEFORMATION FIELDS IN HUNTINGTON'S DISEASE. PROCEEDINGS. IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING 2020; 2020:1091-1095. [PMID: 34873434 PMCID: PMC8643362 DOI: 10.1109/isbi45749.2020.9098692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The improvements in magnetic resonance imaging have led to the development of numerous techniques to better detect structural alterations caused by neurodegenerative diseases. Among these, the patch-based grading framework has been proposed to model local patterns of anatomical changes. This approach is attractive because of its low computational cost and its competitive performance. Other studies have proposed to analyze the deformations of brain structures using tensor-based morphometry, which is a highly interpretable approach. In this work, we propose to combine the advantages of these two approaches by extending the patch-based grading framework with a new tensor-based grading method that enables us to model patterns of local deformation using a log-Euclidean metric. We evaluate our new method in a study of the putamen for the classification of patients with pre-manifest Huntington's disease and healthy controls. Our experiments show a substantial increase in classification accuracy (87.5 ± 0.5 vs. 81.3 ± 0.6) compared to the existing patch-based grading methods, and a good complement to putamen volume, which is a primary imaging-based marker for the study of Huntington's disease.
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Affiliation(s)
- Kilian Hett
- Vanderbilt University, Dept. of Electrical Engineering and Computer Science, Nashville TN, USA
| | - Hans Johnson
- University of Iowa, Dept. of Electrical and Computer Engineering, Iowa City, IA, USA
| | - Pierrick Coupé
- CNRS, University of Bordeaux, Bordeaux INP, LABRI, UMR5800, PICTURA, France
| | - Jane S Paulsen
- University of Iowa, Dept. of Neuroscience, Iowa City IA, USA
- University of Iowa, Dept. of Psychiatry, Iowa City IA, USA
| | - Jeffrey D Long
- University of Iowa, Dept. of Psychiatry, Iowa City IA, USA
- University of Iowa, Dept. of Biostatitsics, Iowa City IA, USA
| | - Ipek Oguz
- Vanderbilt University, Dept. of Electrical Engineering and Computer Science, Nashville TN, USA
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14
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van der Plas E, Hamilton MJ, Miller JN, Koscik TR, Long JD, Cumming S, Povilaikaite J, Farrugia ME, McLean J, Jampana R, Magnotta VA, Gutmann L, Monckton DG, Nopoulos PC. Brain Structural Features of Myotonic Dystrophy Type 1 and their Relationship with CTG Repeats. J Neuromuscul Dis 2020; 6:321-332. [PMID: 31306140 PMCID: PMC7480174 DOI: 10.3233/jnd-190397] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Background Few adequately-powered studies have systematically evaluated brain morphology in adult-onset myotonic dystrophy type 1 (DM1). Objective The goal of the present study was to determine structural brain differences between individuals with and without adult-onset DM1 in a multi-site, case-controlled cohort. We also explored correlations between brain structure and CTG repeat length. Methods Neuroimaging data was acquired in 58 unaffected individuals (29 women) and 79 individuals with DM1 (50 women). CTG repeat length, expressed as estimated progenitor allele length (ePAL), was determined by small pool PCR. Statistical models were adjusted for age, sex, site, and intracranial volume (ICV). Results ICV was reduced in DM1 subjects compared with controls. Accounting for the difference in ICV, the DM1 group exhibited smaller volume in frontal grey and white matter, parietal grey matter as well as smaller volume of the corpus callosum, thalamus, putamen, and accumbens. In contrast, volumes of the hippocampus and amygdala were significantly larger in DM1. Greater ePAL was associated with lower volumes of the putamen, occipital grey matter, and thalamus. A positive ePAL association was observed for amygdala volume and cerebellar white matter. Conclusions Smaller ICV may be a marker of aberrant neurodevelopment in adult-onset DM1. Volumetric analysis revealed morphological differences, some associated with CTG repeat length, in structures with plausible links to key DM1 symptoms including cognitive deficits and excessive daytime somnolence. These data offer further insights into the basis of CNS disease in DM1, and highlight avenues for further work to identify therapeutic targets and imaging biomarkers.
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Affiliation(s)
- Ellen van der Plas
- Department of Psychiatry, University of Iowa Hospital and Clinics, Iowa City, IA, USA
| | - Mark J Hamilton
- West of Scotland Clinical Genetics Service, Queen Elizabeth University Hospital, Glasgow, UK.,Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Jacob N Miller
- Department of Psychiatry, University of Iowa Hospital and Clinics, Iowa City, IA, USA
| | - Timothy R Koscik
- Department of Psychiatry, University of Iowa Hospital and Clinics, Iowa City, IA, USA
| | - Jeffrey D Long
- Department of Psychiatry, University of Iowa Hospital and Clinics, Iowa City, IA, USA.,Department of Biostatistics, University of Iowa, College of Public Health, Iowa City, IA, USA
| | - Sarah Cumming
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Julija Povilaikaite
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Maria Elena Farrugia
- Department of Neurology, Institute of Neurological Sciences, Queen Elizabeth University Hospital, Glasgow, UK
| | - John McLean
- Department of Neuroradiology, Institute of Neurological Sciences, Queen Elizabeth University Hospital, Glasgow, UK
| | - Ravi Jampana
- Department of Neuroradiology, Institute of Neurological Sciences, Queen Elizabeth University Hospital, Glasgow, UK
| | - Vincent A Magnotta
- Department of Radiology, University of Iowa Hospital and Clinics, Iowa City, IA, USA
| | - Laurie Gutmann
- Department of Neurology, University of Iowa Hospital and Clinics, Iowa City, IA, USA
| | - Darren G Monckton
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Peggy C Nopoulos
- Department of Psychiatry, University of Iowa Hospital and Clinics, Iowa City, IA, USA
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15
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Langbehn KE, van der Plas E, Moser DJ, Long JD, Gutmann L, Nopoulos PC. Cognitive function and its relationship with brain structure in myotonic dystrophy type 1. J Neurosci Res 2020; 99:190-199. [PMID: 32056295 DOI: 10.1002/jnr.24595] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/06/2020] [Accepted: 02/02/2020] [Indexed: 11/09/2022]
Abstract
Studies have shown relationships between white matter abnormalities and cognitive dysfunction in myotonic dystrophy type 1 (DM1), but comprehensive analysis of potential structure-function relationships are lacking. Fifty adult-onset DM1 individuals (33 female) and 68 unaffected adults (45 female) completed the Wechsler Adult Intelligence Scale-IV (WAIS-IV) to determine the levels and patterns of intellectual functioning. Neuroimages were acquired with a 3T scanner and were processed with BrainsTools. Regional brain volumes (regions of interest, ROIs) were adjusted for inter-scanner variation and intracranial volume. Linear regression models were conducted to assess if group by ROI interaction terms significantly predicted WAIS-IV composite scores. Models were adjusted for age and sex. The DM1 group had lower Perceptual Reasoning Index (PRI), Working Memory Index (WMI), and Processing Speed Index (PSI) scores than the unaffected group (PRI t(113) = -3.28, p = 0.0014; WMI t(114) = -3.49, p = 0.0007; PSI t(114) = -2.98, p = 0.0035). The group by hippocampus interaction term was significant for both PRI and PSI (PRI (t(111) = -2.82, p = 0.0057; PSI (t(112) = -2.87, p = 0.0049)). There was an inverse association between hippocampal volume and both PRI and PSI in the DM1 group (the higher the volume, the lower the intelligence quotient scores), but no such association was observed in the unaffected group. Enlarged hippocampal volume may underlie some aspects of cognitive dysfunction in adult-onset DM1, suggesting that increased volume of the hippocampus may be pathological.
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Affiliation(s)
- Kathleen E Langbehn
- Psychiatry Department, University of Iowa Hospitals & Clinics, Iowa City, IA, USA
| | - Ellen van der Plas
- Psychiatry Department, University of Iowa Hospitals & Clinics, Iowa City, IA, USA
| | - David J Moser
- Psychiatry Department, University of Iowa Hospitals & Clinics, Iowa City, IA, USA
| | - Jeffrey D Long
- Psychiatry Department, University of Iowa Hospitals & Clinics, Iowa City, IA, USA
| | - Laurie Gutmann
- Neurology Department, University of Iowa Hospitals & Clinics, Iowa City, IA, USA
| | - Peggy C Nopoulos
- Psychiatry Department, University of Iowa Hospitals & Clinics, Iowa City, IA, USA.,Neurology Department, University of Iowa Hospitals & Clinics, Iowa City, IA, USA
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16
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Benavides A, Conrad AL, Brumbaugh JE, Magnotta V, Bell EF, Nopoulos P. Long-term outcome of brain structure in female preterm infants: possible associations of liberal versus restrictive red blood cell transfusions. J Matern Fetal Neonatal Med 2019; 34:3292-3299. [PMID: 31722594 DOI: 10.1080/14767058.2019.1683157] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Preterm infants who receive differential red blood cell (RBC) transfusions at birth may show brain structure differences across development, including abnormalities in white matter (WM) structure and organization. This study investigated long-term outcomes of brain structure in female infants born preterm, at an average age of 13 years old, who received red blood cell (RBC) transfusions in the neonatal period according to a liberal or restrictive approach. Results from this study will increase understanding of the effects of transfusion on the developing brain. STUDY DESIGN AND METHODS This follow-up study included female preterm infants who participated in a clinical trial and had been randomized at birth to either a liberal or restrictive hematocrit threshold. Brain structures were measured in childhood using structural magnetic resonance imaging (MRI) scans. Due to the low number of females in the restrictive transfusion group at follow-up, additional females were recruited for inclusion. Main outcome measures included cerebral and subcortical brain region volumes. RESULTS Total intracranial volume was significantly decreased in females who were randomized to higher average hematocrit levels at birth. Infants in the liberal transfusion group had proportionately smaller volumes in all measures of regional cerebral WM and subcortical brain volumes, reaching significance for temporal lobe WM and caudate volumes. CONCLUSION Female premature infants who received a liberal transfusion threshold at birth had decreased WM volumes, which suggests the potential long-term neurodevelopmental risks associated with liberal transfusion practices.
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Affiliation(s)
- Amanda Benavides
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
| | - Amy L Conrad
- University of Iowa Stead Family Children's Hospital, Iowa City, IA, USA
| | - Jane E Brumbaugh
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN, USA
| | | | - Edward F Bell
- University of Iowa Stead Family Children's Hospital, Iowa City, IA, USA
| | - Peggy Nopoulos
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
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17
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Tereshchenko A, Magnotta V, Epping E, Mathews K, Espe-Pfeifer P, Martin E, Dawson J, Duan W, Nopoulos P. Brain structure in juvenile-onset Huntington disease. Neurology 2019; 92:e1939-e1947. [PMID: 30971481 PMCID: PMC6511077 DOI: 10.1212/wnl.0000000000007355] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 12/27/2018] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To assess brain morphometry in a sample of patients with juvenile-onset Huntington disease (JOHD) and several mouse models of Huntington disease (HD) that likely represent the human JOHD phenotype. METHODS Despite sharing the mutation in the Huntingtin gene, adult-onset HD characteristically presents as a hyperkinetic motor disorder, while JOHD typically presents as a hypokinetic motor disease. The University of Iowa Kids-JHD program enrolls individuals 5 to 25 years of age who have already received the clinical diagnosis. A total of 19 children with juvenile HD (JHD) (mean CAG = 72) were studied. Patients with JHD were compared to healthy controls (n = 234) using a cross-sectional study design. Volumetric data from structural MRI was compared between groups. In addition, we used the same procedure to evaluate brain morphology of R6/2, zQ175, HdhQ250 HD mice models. RESULTS Participants with JHD had substantially reduced intracranial volumes. After controlling for the small intracranial volume size, the volumes of subcortical regions (caudate, putamen, globus pallidus, and thalamus) and of cortical white matter were significantly decreased in patients with JHD. However, the cerebellum was proportionately enlarged in the JHD sample. The cerebral cortex was largely unaffected. Likewise, HD mice had a lower volume of striatum and a higher volume of cerebellum, mirroring the human MRI results. CONCLUSIONS The primary pathology of JOHD extends beyond changes in the striatal volume. Brain morphology in both mice and human patients with JHD shows proportional cerebellar enlargement. This pattern of brain changes may explain the unique picture of hypokinetic motor symptoms in JHD, which is not seen in the hyperkinetic chorea-like phenotype of adult-onset HD.
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Affiliation(s)
- Alexander Tereshchenko
- From the Departments of Psychiatry (A.T., E.E., V.M., P.E.-P., E.M.), Radiology (V.M.), Neurology (K.M., P.E.-P.), and Pediatrics (K.M.), University of Iowa Hospitals and Clinics, Iowa City; Department of Biostatistics (J.D.), University of Iowa College of Public Health, Iowa City; and Department of Psychiatry and Behavioral Sciences (W.D.), Johns Hopkins University, Baltimore, MD
| | - Vincent Magnotta
- From the Departments of Psychiatry (A.T., E.E., V.M., P.E.-P., E.M.), Radiology (V.M.), Neurology (K.M., P.E.-P.), and Pediatrics (K.M.), University of Iowa Hospitals and Clinics, Iowa City; Department of Biostatistics (J.D.), University of Iowa College of Public Health, Iowa City; and Department of Psychiatry and Behavioral Sciences (W.D.), Johns Hopkins University, Baltimore, MD
| | - Eric Epping
- From the Departments of Psychiatry (A.T., E.E., V.M., P.E.-P., E.M.), Radiology (V.M.), Neurology (K.M., P.E.-P.), and Pediatrics (K.M.), University of Iowa Hospitals and Clinics, Iowa City; Department of Biostatistics (J.D.), University of Iowa College of Public Health, Iowa City; and Department of Psychiatry and Behavioral Sciences (W.D.), Johns Hopkins University, Baltimore, MD
| | - Katherine Mathews
- From the Departments of Psychiatry (A.T., E.E., V.M., P.E.-P., E.M.), Radiology (V.M.), Neurology (K.M., P.E.-P.), and Pediatrics (K.M.), University of Iowa Hospitals and Clinics, Iowa City; Department of Biostatistics (J.D.), University of Iowa College of Public Health, Iowa City; and Department of Psychiatry and Behavioral Sciences (W.D.), Johns Hopkins University, Baltimore, MD
| | - Patricia Espe-Pfeifer
- From the Departments of Psychiatry (A.T., E.E., V.M., P.E.-P., E.M.), Radiology (V.M.), Neurology (K.M., P.E.-P.), and Pediatrics (K.M.), University of Iowa Hospitals and Clinics, Iowa City; Department of Biostatistics (J.D.), University of Iowa College of Public Health, Iowa City; and Department of Psychiatry and Behavioral Sciences (W.D.), Johns Hopkins University, Baltimore, MD
| | - Erin Martin
- From the Departments of Psychiatry (A.T., E.E., V.M., P.E.-P., E.M.), Radiology (V.M.), Neurology (K.M., P.E.-P.), and Pediatrics (K.M.), University of Iowa Hospitals and Clinics, Iowa City; Department of Biostatistics (J.D.), University of Iowa College of Public Health, Iowa City; and Department of Psychiatry and Behavioral Sciences (W.D.), Johns Hopkins University, Baltimore, MD
| | - Jeffrey Dawson
- From the Departments of Psychiatry (A.T., E.E., V.M., P.E.-P., E.M.), Radiology (V.M.), Neurology (K.M., P.E.-P.), and Pediatrics (K.M.), University of Iowa Hospitals and Clinics, Iowa City; Department of Biostatistics (J.D.), University of Iowa College of Public Health, Iowa City; and Department of Psychiatry and Behavioral Sciences (W.D.), Johns Hopkins University, Baltimore, MD
| | - Wenzhen Duan
- From the Departments of Psychiatry (A.T., E.E., V.M., P.E.-P., E.M.), Radiology (V.M.), Neurology (K.M., P.E.-P.), and Pediatrics (K.M.), University of Iowa Hospitals and Clinics, Iowa City; Department of Biostatistics (J.D.), University of Iowa College of Public Health, Iowa City; and Department of Psychiatry and Behavioral Sciences (W.D.), Johns Hopkins University, Baltimore, MD
| | - Peg Nopoulos
- From the Departments of Psychiatry (A.T., E.E., V.M., P.E.-P., E.M.), Radiology (V.M.), Neurology (K.M., P.E.-P.), and Pediatrics (K.M.), University of Iowa Hospitals and Clinics, Iowa City; Department of Biostatistics (J.D.), University of Iowa College of Public Health, Iowa City; and Department of Psychiatry and Behavioral Sciences (W.D.), Johns Hopkins University, Baltimore, MD.
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18
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Anderson DG, Haagensen M, Ferreira-Correia A, Pierson R, Carr J, Krause A, Margolis RL. Emerging differences between Huntington's disease-like 2 and Huntington's disease: A comparison using MRI brain volumetry. Neuroimage Clin 2019; 21:101666. [PMID: 30682531 PMCID: PMC6350216 DOI: 10.1016/j.nicl.2019.101666] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 12/18/2018] [Accepted: 01/04/2019] [Indexed: 01/18/2023]
Abstract
Huntington's Disease-Like 2 (HDL2), caused by a CTG/CAG expansion in JPH3 on chromosome 16q24, is the most common Huntington's Disease (HD) phenocopy in populations with African ancestry. Qualitatively, brain MRIs of HDL2 patients have been indistinguishable from HD. To determine brain regions most affected in HDL2 a cross-sectional study using MRI brain volumetry was undertaken to compare the brains of nine HDL2, 11 HD and nine age matched control participants. Participants were ascertained from the region in South Africa with the world's highest HDL2 incidence. The HDL2 and HD patient groups showed no significant differences with respect to mean age at MRI, disease duration, abnormal triplet repeat length, or age at disease onset. Overall, intracerebral volumes were smaller in both affected groups compared to the control group. Comparing the HDL2 and HD groups across multiple covariates, cortical and subcortical volumes were similar with the exception that the HDL2 thalamic volumes were smaller. Consistent with other similarities between the two diseases, these results indicate a pattern of neurodegeneration in HDL2 that is remarkably similar to HD. However smaller thalamic volumes in HDL2 raises intriguing questions into the pathogenesis of both disorders, and how these volumetric differences relate to their respective phenotypes.
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Affiliation(s)
- David G Anderson
- The University of the Witwatersrand Donald Gordon Medical Centre, Neurology, Johannesburg, South Africa; Division of Human Genetics, National Health Laboratory Service and School of Pathology, Faculty of Health Sciences, The University of the Witwatersrand, Johannesburg, South Africa.
| | - Mark Haagensen
- The University of the Witwatersrand Donald Gordon Medical Centre, Radiology Department, Johannesburg, South Africa
| | - Aline Ferreira-Correia
- Department of Psychology, School of Human and Community Development, University of the Witwatersrand, Johannesburg, South Africa
| | | | - Jonathan Carr
- Division of Neurology, Department of Medicine, University of Stellenbosch, Cape Town, South Africa
| | - Amanda Krause
- Division of Human Genetics, National Health Laboratory Service and School of Pathology, Faculty of Health Sciences, The University of the Witwatersrand, Johannesburg, South Africa
| | - Russell L Margolis
- Departments of Psychiatry and Neurology, Program in Cellular and Molecular Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Long JD, Lee JM, Aylward EH, Gillis T, Mysore JS, Abu Elneel K, Chao MJ, Paulsen JS, MacDonald ME, Gusella JF. Genetic Modification of Huntington Disease Acts Early in the Prediagnosis Phase. Am J Hum Genet 2018; 103:349-357. [PMID: 30122542 DOI: 10.1016/j.ajhg.2018.07.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 07/24/2018] [Indexed: 10/28/2022] Open
Abstract
Age at onset of Huntington disease, an inherited neurodegenerative disorder, is influenced by the size of the disease-causing CAG trinucleotide repeat expansion in HTT and by genetic modifier loci on chromosomes 8 and 15. Stratifying by modifier genotype, we have examined putamen volume, total motor score (TMS), and symbol digit modalities test (SDMT) scores, both at study entry and longitudinally, in normal controls and CAG-expansion carriers who were enrolled prior to the emergence of manifest HD in the PREDICT-HD study. The modifiers, which included onset-hastening and onset-delaying alleles on chromosome 15 and an onset-hastening allele on chromosome 8, revealed no major effect in controls but distinct patterns of modification in prediagnosis HD subjects. Putamen volume at study entry showed evidence of reciprocal modification by the chromosome 15 alleles, but the rate of loss of putamen volume was modified only by the deleterious chromosome 15 allele. By contrast, both alleles modified the rate of change of the SDMT score, but neither had an effect on the TMS. The influence of the chromosome 8 modifier was evident only in the rate of TMS increase. The data indicate that (1) modification of pathogenesis can occur early in the prediagnosis phase, (2) the modifier loci act in genetic interaction with the HD mutation rather than through independent additive effects, and (3) HD subclinical phenotypes are differentially influenced by each modifier, implying distinct effects in different cells or tissues. Together, these findings indicate the potential benefit of using genetic modifier strategies for dissecting the prediagnosis pathogenic process in HD.
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20
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Johnson CP, Christensen GE, Fiedorowicz JG, Mani M, Shaffer JJ, Magnotta VA, Wemmie JA. Alterations of the cerebellum and basal ganglia in bipolar disorder mood states detected by quantitative T1ρ mapping. Bipolar Disord 2018; 20:381-390. [PMID: 29316081 PMCID: PMC5995598 DOI: 10.1111/bdi.12581] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 10/21/2017] [Indexed: 01/20/2023]
Abstract
OBJECTIVES Quantitative mapping of T1 relaxation in the rotating frame (T1ρ) is a magnetic resonance imaging technique sensitive to pH and other cellular and microstructural factors, and is a potentially valuable tool for identifying brain alterations in bipolar disorder. Recently, this technique identified differences in the cerebellum and cerebral white matter of euthymic patients vs healthy controls that were consistent with reduced pH in these regions, suggesting an underlying metabolic abnormality. The current study built upon this prior work to investigate brain T1ρ differences across euthymic, depressed, and manic mood states of bipolar disorder. METHODS Forty participants with bipolar I disorder and 29 healthy control participants matched for age and gender were enrolled. Participants with bipolar disorder were imaged in one or more mood states, yielding 27, 12, and 13 imaging sessions in euthymic, depressed, and manic mood states, respectively. Three-dimensional, whole-brain anatomical images and T1ρ maps were acquired for all participants, enabling voxel-wise evaluation of T1ρ differences between bipolar mood state and healthy control groups. RESULTS All three mood state groups had increased T1ρ relaxation times in the cerebellum compared to the healthy control group. Additionally, the depressed and manic groups had reduced T1ρ relaxation times in and around the basal ganglia compared to the control and euthymic groups. CONCLUSIONS The study implicated the cerebellum and basal ganglia in the pathophysiology of bipolar disorder and its mood states, the roles of which are relatively unexplored. These findings motivate further investigation of the underlying cause of the abnormalities, and the potential role of altered metabolic activity in these regions.
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Affiliation(s)
| | - Gary E. Christensen
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City, IA,Department of Radiation Oncology, University of Iowa, Iowa City, IA
| | - Jess G. Fiedorowicz
- Department of Psychiatry, University of Iowa, Iowa City, IA,Department of Epidemiology, University of Iowa, Iowa City, IA,Department of Internal Medicine, University of Iowa, Iowa City, IA,Abboud Cardiovascular Research Center, University of Iowa, Iowa City, IA
| | - Merry Mani
- Department of Radiology, University of Iowa, Iowa City, IA
| | | | - Vincent A. Magnotta
- Department of Radiology, University of Iowa, Iowa City, IA,Department of Psychiatry, University of Iowa, Iowa City, IA,Pappajohn Biomedical Institute, University of Iowa, Iowa City, IA,Iowa Neuroscience Institute, University of Iowa, Iowa City, IA,Department of Biomedical Engineering, University of Iowa, Iowa City, IA,Corresponding Authors: Vincent A. Magnotta, PhD, L311 PBDB, 169 Newton Road, Iowa City, IA 52242, Tel: 319-335-5482, Fax: 319-353-6275, ; John A. Wemmie, MD, PhD, 1314 PBDB, 169 Newton Road, Iowa City, IA 52242, Tel: 319-384-3174, Fax: 319-384-3176,
| | - John A. Wemmie
- Department of Psychiatry, University of Iowa, Iowa City, IA,Pappajohn Biomedical Institute, University of Iowa, Iowa City, IA,Iowa Neuroscience Institute, University of Iowa, Iowa City, IA,Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, IA,Department of Neurosurgery, University of Iowa, Iowa City, IA,Veterans Affairs Medical Center, Iowa City, IA,Corresponding Authors: Vincent A. Magnotta, PhD, L311 PBDB, 169 Newton Road, Iowa City, IA 52242, Tel: 319-335-5482, Fax: 319-353-6275, ; John A. Wemmie, MD, PhD, 1314 PBDB, 169 Newton Road, Iowa City, IA 52242, Tel: 319-384-3174, Fax: 319-384-3176,
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21
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Shaffer JJ, Johnson CP, Fiedorowicz JG, Christensen GE, Wemmie JA, Magnotta VA. Impaired sensory processing measured by functional MRI in Bipolar disorder manic and depressed mood states. Brain Imaging Behav 2018; 12:837-847. [PMID: 28674759 PMCID: PMC5752628 DOI: 10.1007/s11682-017-9741-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Bipolar disorder is characterized by recurring episodes of depression and mania. Defining differences in brain function during these states is an important goal of bipolar disorder research. However, few imaging studies have directly compared brain activity between bipolar mood states. Herein, we compare functional magnetic resonance imaging (fMRI) responses during a flashing checkerboard stimulus between bipolar participants across mood states (euthymia, depression, and mania) in order to identify functional differences between these states. 40 participants with bipolar I disorder and 33 healthy controls underwent fMRI during the presentation of the stimulus. A total of 23 euthymic-state, 16 manic-state, 15 depressed-state, and 32 healthy control imaging sessions were analyzed in order to compare functional activation during the stimulus between mood states and with healthy controls. A reduced response was identified in the visual cortex in both the depressed and manic groups compared to euthymic and healthy participants. Functional differences between bipolar mood states were also observed in the cerebellum, thalamus, striatum, and hippocampus. Functional differences between mood states occurred in several brain regions involved in visual and other sensory processing. These differences suggest that altered visual processing may be a feature of mood states in bipolar disorder. The key limitations of this study are modest mood-state group size and the limited temporal resolution of fMRI which prevents the segregation of primary visual activity from regulatory feedback mechanisms.
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Affiliation(s)
- Joseph J Shaffer
- Department of Radiology, University of Iowa, Iowa City, IA, USA.
- , PBDB L420, 169 Newton Rd., Iowa City, IA, 52242, USA.
| | - Casey P Johnson
- Department of Radiology, University of Iowa, Iowa City, IA, USA
| | - Jess G Fiedorowicz
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
- Department of Epidemiology, University of Iowa, Iowa City, IA, USA
- Department of Internal Medicine, University of Iowa, Iowa City, IA, USA
- Abboud Cardiovascular Research Center, University of Iowa, Iowa City, IA, USA
| | - Gary E Christensen
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City, IA, USA
- Department of Radiation Oncology, University of Iowa, Iowa City, IA, USA
| | - John A Wemmie
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
- Department of Veterans Affairs Medical Center, Iowa City, IA, USA
- Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, IA, USA
- Department of Neurosurgery, University of Iowa, Iowa City, IA, USA
- Pappajohn Biomedical Institute, University of Iowa, Iowa City, IA, USA
| | - Vincent A Magnotta
- Department of Radiology, University of Iowa, Iowa City, IA, USA
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
- Department of Biomedical Engineering, University of Iowa, Iowa City, IA, USA
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22
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Milne NT, Bucks RS, Davis WA, Davis TME, Pierson R, Starkstein SE, Bruce DG. Hippocampal atrophy, asymmetry, and cognition in type 2 diabetes mellitus. Brain Behav 2018; 8:e00741. [PMID: 29568674 PMCID: PMC5853633 DOI: 10.1002/brb3.741] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 04/13/2017] [Accepted: 04/20/2017] [Indexed: 11/05/2022] Open
Abstract
INTRODUCTION Type 2 diabetes mellitus is associated with global and hippocampal atrophy and cognitive deficits, and some studies suggest that the right hippocampus may display greater vulnerability than the left. METHODS Hippocampal volumes, the hippocampal asymmetry index, and cognitive functioning were assessed in 120 nondemented adults with long duration type 2 diabetes. RESULTS The majority of the sample displayed left greater than right hippocampal asymmetry (which is the reverse of the expected direction seen with normal aging). After adjustment for age, sex, and IQ, right (but not left) hippocampal volumes were negatively associated with memory, executive function, and semantic fluency. These associations were stronger with the hippocampal asymmetry index and remained significant for memory and executive function after additional adjustment for global brain atrophy. CONCLUSIONS We conclude that asymmetric hippocampal atrophy may occur in type 2 diabetes, with greater atrophy occurring in the right than the left hippocampus, and that this may contribute to cognitive impairment in this disorder. These cross-sectional associations require further verification but may provide clues into the pathogenesis of cognitive disorders in type 2 diabetes.
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Affiliation(s)
- Nicole T Milne
- School of Psychology University of Western Australia Western Australia Australia
| | - Romola S Bucks
- School of Psychology University of Western Australia Western Australia Australia
| | - Wendy A Davis
- School of Medicine & Pharmacology University of Western Australia Western Australia Australia
| | - Timothy M E Davis
- School of Medicine & Pharmacology University of Western Australia Western Australia Australia
| | - Ronald Pierson
- Brain Image Analysis Technology Innovation Center Coralville IA USA
| | - Sergio E Starkstein
- School of Psychiatry & Clinical Neuroscience University of Western Australia Western Australia Australia
| | - David G Bruce
- School of Medicine & Pharmacology University of Western Australia Western Australia Australia
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23
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Henderson KE, Vaidya JG, Kramer JR, Kuperman S, Langbehn DR, O'Leary DS. Cortical Thickness in Adolescents with a Family History of Alcohol Use Disorder. Alcohol Clin Exp Res 2017; 42:89-99. [PMID: 29105114 DOI: 10.1111/acer.13543] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 10/26/2017] [Indexed: 02/01/2023]
Abstract
BACKGROUND Individuals with a family history (FH+) of alcohol use disorder (AUD) have a higher risk for developing an AUD than those with no family history (FH-) of AUD. In addition, FH+ individuals tend to perform worse on neuropsychological measures and show heightened impulsivity, which may be due to underlying differences in brain structure such as cortical thickness. The primary aim of this study was to investigate differences in cortical thickness in FH+ compared to FH- adolescents. Secondary aims were to (i) investigate differences in executive functioning and impulsivity, and (ii) examine associations between brain structure and behavior. METHODS Brain scans of 95 FH- and 93 FH+ subjects aged 13 to 18 were obtained using magnetic resonance imaging. FH+ subjects were required to have at least 1 biological parent with a history of an AUD. FH+ and FH- individuals had limited or no past alcohol use, thereby minimizing potential effects of alcohol. Subjects were evaluated on impulsivity and executive functioning tasks. Thicknesses of cortical lobes and subregions were analyzed using FreeSurfer. Regions showing group differences were examined for group-by-age interactions and correlations with neuropsychological and personality measures. RESULTS FH+ adolescents had thinner cortices in frontal and parietal lobes, notably in the medial orbitofrontal, lateral orbitofrontal, and superior parietal cortices. The difference in cortical thickness between family history groups was strongest among the youngest subjects. FH+ subjects were also more impulsive and had poorer performance on a spatial memory task. CONCLUSIONS These findings demonstrate frontal and parietal structural differences in FH+ adolescents that might underlie cognitive and behavioral characteristics associated with AUD risk.
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Affiliation(s)
- Kate E Henderson
- Interdisciplinary Graduate Program in Neuroscience, The University of Iowa, Iowa City, Iowa
| | - Jatin G Vaidya
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - John R Kramer
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Samuel Kuperman
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Douglas R Langbehn
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Daniel S O'Leary
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
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24
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Hirsiger S, Koppelmans V, Mérillat S, Erdin C, Narkhede A, Brickman AM, Jäncke L. Executive Functions in Healthy Older Adults Are Differentially Related to Macro- and Microstructural White Matter Characteristics of the Cerebral Lobes. Front Aging Neurosci 2017; 9:373. [PMID: 29249957 PMCID: PMC5715235 DOI: 10.3389/fnagi.2017.00373] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 10/31/2017] [Indexed: 01/13/2023] Open
Abstract
Aging is associated with microstructural white matter (WM) changes. WM microstructural characteristics, measured with diffusion tensor imaging (DTI), are different in normal appearing white matter (NAWM) and WM hyperintensities (WMH). It is largely unknown how the microstructural properties of WMH are associated with cognition and if there are regional effects for specific cognitive domains. We therefore examined within 200 healthy older participants (a) differences in microstructural characteristics of NAWM and WMH per cerebral lobe; and (b) the association of macrostructural (WMH volume) and microstructural characteristics (within NAWM and WMH separately) of each lobe with measures of executive function and processing speed. Multi-modal imaging (i.e., T1, DTI, and FLAIR) was used to assess WM properties. The Stroop and the Trail Making Test were used to measure inhibition, task-switching (both components of executive function), and processing speed. We observed that age was associated with deterioration of white matter microstructure of the NAWM, most notably in the frontal lobe. Older participants had larger WMH volumes and lowest fractional anisotropy values within WMH were found in the frontal lobe. Task-switching was associated with cerebral NAWM volume and NAWM volume of all lobes. Processing speed was associated with total NAWM volume, and microstructural properties of parietal NAWM, the parietal WMH, and the temporal NAWM. Task-switching was related to microstructural properties of WMH of the frontal lobe and WMH volume of the parietal lobe. Our results confirm that executive functioning and processing speed are uniquely associated with macro- and microstructural properties of NAWM and WMH. We further demonstrate for the first time that these relationships differ by lobar region. This warrants the consideration of these distinct WM indices when investigating cognitive function.
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Affiliation(s)
- Sarah Hirsiger
- International Normal Aging and Plasticity Imaging Center, University of Zurich, Zurich, Switzerland.,University Research Priority Program Dynamics of Healthy Aging, University of Zurich, Zurich, Switzerland
| | - Vincent Koppelmans
- Department of Psychiatry, University of Utah, Salt Lake City, UT, United States.,School of Kinesiology, University of Michigan, Ann Arbor, MI, United States
| | - Susan Mérillat
- International Normal Aging and Plasticity Imaging Center, University of Zurich, Zurich, Switzerland.,University Research Priority Program Dynamics of Healthy Aging, University of Zurich, Zurich, Switzerland
| | - Cornelia Erdin
- International Normal Aging and Plasticity Imaging Center, University of Zurich, Zurich, Switzerland.,University Research Priority Program Dynamics of Healthy Aging, University of Zurich, Zurich, Switzerland
| | - Atul Narkhede
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, United States
| | - Adam M Brickman
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, United States
| | - Lutz Jäncke
- International Normal Aging and Plasticity Imaging Center, University of Zurich, Zurich, Switzerland.,University Research Priority Program Dynamics of Healthy Aging, University of Zurich, Zurich, Switzerland.,Division of Neuropsychology, University of Zurich, Zurich, Switzerland.,Department of Special Education, King Abdulaziz University, Jeddah, Saudi Arabia
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25
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Lee JK, Ding Y, Conrad AL, Cattaneo E, Epping E, Mathews K, Gonzalez-Alegre P, Cahill L, Magnotta V, Schlaggar BL, Perlmutter JS, Kim REY, Dawson JD, Nopoulos P. Sex-specific effects of the Huntington gene on normal neurodevelopment. J Neurosci Res 2017; 95:398-408. [PMID: 27870408 DOI: 10.1002/jnr.23980] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/04/2016] [Accepted: 10/06/2016] [Indexed: 01/03/2023]
Abstract
Huntington disease is a neurodegenerative disorder caused by a gene (HTT) with a unique feature of trinucleotide repeats ranging from 10 to 35 in healthy people; when expanded beyond 39 repeats, Huntington disease develops. Animal models demonstrate that HTT is vital to brain development; however, this has not been studied in humans. Moreover, evidence suggests that triplet repeat genes may have been vital in evolution of the human brain. Here we evaluate brain structure using magnetic resonance imaging and brain function using cognitive tests in a sample of school-aged children ages 6 to 18 years old. DNA samples were processed to quantify the number of CAG repeats within HTT. We find that the number of repeats in HTT, below disease threshold, confers advantageous changes in brain structure and general intelligence (IQ): the higher the number of repeats, the greater the change in brain structure, and the higher the IQ. The pattern of structural brain changes associated with HTT is strikingly different between males and females. HTT may confer an advantage or a disadvantage depending on the repeat length, playing a key role in either the evolution of a superior human brain or development of a uniquely human brain disease. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Jessica K Lee
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Yue Ding
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Amy L Conrad
- Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Elena Cattaneo
- Department of Biosciences, University of Milan, Milan, Italy
| | - Eric Epping
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Kathy Mathews
- Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa.,Department of Neurology, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Pedro Gonzalez-Alegre
- Department of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Larry Cahill
- Department of Neurobiology and Behavior, University of California, Irvine, California
| | - Vincent Magnotta
- Department of Radiology, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Bradley L Schlaggar
- Department of Radiology, Washington University School of Medicine, St. Louis, Missouri.,Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri.,Department of Neuroscience, Washington University School of Medicine, St. Louis, Missouri.,Department of Neurology, Washington University School of Medicine, St. Louis, Missouri.,Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri
| | - Joel S Perlmutter
- Department of Radiology, Washington University School of Medicine, St. Louis, Missouri.,Department of Neuroscience, Washington University School of Medicine, St. Louis, Missouri.,Department of Neurology, Washington University School of Medicine, St. Louis, Missouri
| | - Regina E Y Kim
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Jeffrey D Dawson
- Department of Biostatistics, College of Public Health, University of Iowa, Iowa City, Iowa
| | - Peg Nopoulos
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa.,Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa.,Department of Neurology, University of Iowa Carver College of Medicine, Iowa City, Iowa
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26
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Are Anesthesia and Surgery during Infancy Associated with Decreased White Matter Integrity and Volume during Childhood? Anesthesiology 2017; 127:788-799. [DOI: 10.1097/aln.0000000000001808] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Abstract
Background
Anesthetics have neurotoxic effects in neonatal animals. Relevant human evidence is limited. We sought such evidence in a structural neuroimaging study.
Methods
Two groups of children underwent structural magnetic resonance imaging: patients who, during infancy, had one of four operations commonly performed in otherwise healthy children and comparable, nonexposed control subjects. Total and regional brain tissue composition and volume, as well as regional indicators of white matter integrity (fractional anisotropy and mean diffusivity), were analyzed.
Results
Analyses included 17 patients, without potential confounding central nervous system problems or risk factors, who had general anesthesia and surgery during infancy and 17 control subjects (age ranges, 12.3 to 15.2 yr and 12.6 to 15.1 yr, respectively). Whole brain white matter volume, as a percentage of total intracranial volume, was lower for the exposed than the nonexposed group, 37.3 ± 0.4% and 38.9 ± 0.4% (least squares mean ± SE), respectively, a difference of 1.5 percentage points (95% CI, 0.3 to 2.8; P = 0.016). Corresponding decreases were statistically significant for parietal and occipital lobes, infratentorium, and brainstem separately. White matter integrity was lower for the exposed than the nonexposed group in superior cerebellar peduncle, cerebral peduncle, external capsule, cingulum (cingulate gyrus), and fornix (cres) and/or stria terminalis. The groups did not differ in total intracranial, gray matter, and cerebrospinal fluid volumes.
Conclusions
Children who had anesthesia and surgery during infancy showed broadly distributed, decreased white matter integrity and volume. Although the findings may be related to anesthesia and surgery during infancy, other explanations are possible.
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27
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Shaffer JJ, Johnson CP, Long JD, Fiedorowicz JG, Christensen GE, Wemmie JA, Magnotta VA. Relationship altered between functional T1ρ and BOLD signals in bipolar disorder. Brain Behav 2017; 7:e00802. [PMID: 29075562 PMCID: PMC5651386 DOI: 10.1002/brb3.802] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 07/06/2017] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Functional neuroimaging typically relies on the blood-oxygen-level-dependent (BOLD) contrast, which is sensitive to the influx of oxygenated blood following neuronal activity. A new method, functional T1 relaxation in the rotating frame (fT1ρ) is thought to reflect changes in local brain metabolism, likely pH, and may more directly measure neuronal activity. These two methods were applied to study activation of the visual cortex in participants with bipolar disorder as compared to controls. METHODS Thirty-nine participants with bipolar disorder and 32 healthy controls underwent functional neuroimaging during a flashing checkerboard paradigm. Functional images were acquired in alternating blocks of BOLD and fT1ρ. Linear mixed-effect models were used to examine the relationship between these two functional imaging modalities and to test whether that relationship was altered in bipolar disorder. RESULTS BOLD and fT1ρ signal were strongly related in visual and cerebellar areas during the task in controls. The relationship between these two measures was reduced in bipolar disorder within the visual areas, cerebellum, striatum, and thalamus. CONCLUSIONS These results support a distinct mechanisms underlying BOLD and fT1ρ signals. The weakened relationship between these imaging modalities may provide a novel tool for measuring pathology in bipolar disorder and other psychiatric illnesses.
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Affiliation(s)
| | | | - Jeffrey D Long
- Department of Psychiatry University of Iowa Iowa City IA USA.,Department of Biostatistics University of Iowa Iowa City IA USA
| | - Jess G Fiedorowicz
- Department of Psychiatry University of Iowa Iowa City IA USA.,Department of Epidemiology University of Iowa Iowa City IA USA.,Department of Internal Medicine University of Iowa Iowa City IA USA
| | - Gary E Christensen
- Department of Electrical and Computer Engineering University of Iowa Iowa City IA USA.,Department of Radiation Oncology University of Iowa Iowa City IA USA
| | - John A Wemmie
- Department of Psychiatry University of Iowa Iowa City IA USA.,Department of Veterans Affairs Medical Center Iowa City IA USA.,Department of Molecular Physiology and Biophysics University of Iowa Iowa City IA USA.,Department of Neurosurgery University of Iowa Iowa City IA USA.,Iowa Neuroscience Institute University of Iowa Iowa City IA USA
| | - Vincent A Magnotta
- Department of Radiology University of Iowa Iowa City IA USA.,Department of Psychiatry University of Iowa Iowa City IA USA.,Department of Biomedical Engineering University of Iowa Iowa City IA USA
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28
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Tang X, Miller MI, Younes L. BIOMARKER CHANGE-POINT ESTIMATION WITH RIGHT CENSORING IN LONGITUDINAL STUDIES. Ann Appl Stat 2017; 11:1738-1762. [PMID: 30271520 DOI: 10.1214/17-aoas1056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We consider in this paper a statistical two-phase regression model in which the change point of a disease biomarker is measured relative to another point in time, such as the manifestation of the disease, which is subject to right-censoring (i.e., possibly unobserved over the entire course of the study). We develop point estimation methods for this model, based on maximum likelihood, and bootstrap validation methods. The effectiveness of our approach is illustrated by numerical simulations, and by the estimation of a change point for amygdalar atrophy in the context of Alzheimer's disease, wherein it is related to the cognitive manifestation of the disease.
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Affiliation(s)
- Xiaoying Tang
- SYSU-CMU Joint Institute of Engineering, Sun Yat-Sen University, No. 132, East Waihuan Road, Guangzhou Higher Education Mega Center, Guangzhou, 510006, P.R. China
| | - Michael I Miller
- Center for Imaging Science, Johns Hopkins University, 3400 N. Charles St. Baltimore, Maryland 21218 USA
| | - Laurent Younes
- Center for Imaging Science, Johns Hopkins University, 3400 N. Charles St. Baltimore, Maryland 21218 USA
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29
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Koppelmans V, Bloomberg JJ, De Dios YE, Wood SJ, Reuter-Lorenz PA, Kofman IS, Riascos R, Mulavara AP, Seidler RD. Brain plasticity and sensorimotor deterioration as a function of 70 days head down tilt bed rest. PLoS One 2017; 12:e0182236. [PMID: 28767698 PMCID: PMC5540603 DOI: 10.1371/journal.pone.0182236] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 07/15/2017] [Indexed: 12/18/2022] Open
Abstract
Background Adverse effects of spaceflight on sensorimotor function have been linked to altered somatosensory and vestibular inputs in the microgravity environment. Whether these spaceflight sequelae have a central nervous system component is unknown. However, experimental studies have shown spaceflight-induced brain structural changes in rodents’ sensorimotor brain regions. Understanding the neural correlates of spaceflight-related motor performance changes is important to ultimately develop tailored countermeasures that ensure mission success and astronauts’ health. Method Head down-tilt bed rest (HDBR) can serve as a microgravity analog because it mimics body unloading and headward fluid shifts of microgravity. We conducted a 70-day 6° HDBR study with 18 right-handed males to investigate how microgravity affects focal gray matter (GM) brain volume. MRI data were collected at 7 time points before, during and post-HDBR. Standing balance and functional mobility were measured pre and post-HDBR. The same metrics were obtained at 4 time points over ~90 days from 12 control subjects, serving as reference data. Results HDBR resulted in widespread increases GM in posterior parietal regions and decreases in frontal areas; recovery was not yet complete by 12 days post-HDBR. Additionally, HDBR led to balance and locomotor performance declines. Increases in a cluster comprising the precuneus, precentral and postcentral gyrus GM correlated with less deterioration or even improvement in standing balance. This association did not survive Bonferroni correction and should therefore be interpreted with caution. No brain or behavior changes were observed in control subjects. Conclusions Our results parallel the sensorimotor deficits that astronauts experience post-flight. The widespread GM changes could reflect fluid redistribution. Additionally, the association between focal GM increase and balance changes suggests that HDBR also may result in neuroplastic adaptation. Future studies are warranted to determine causality and underlying mechanisms.
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Affiliation(s)
- Vincent Koppelmans
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | | | | | - Scott J. Wood
- NASA Johnson Space Center, Houston, TX, United States of America
| | | | | | - Roy Riascos
- The University of Texas Health Science Center, Houston, TX, United States of America
| | | | - Rachael D. Seidler
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, United States of America
- Neuroscience Program, University of Michigan, Ann Arbor, Michigan, United States of America
- * E-mail:
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30
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Ghayoor A, Vaidya JG, Johnson HJ. Robust automated constellation-based landmark detection in human brain imaging. Neuroimage 2017; 170:471-481. [PMID: 28392490 DOI: 10.1016/j.neuroimage.2017.04.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 02/04/2017] [Accepted: 04/05/2017] [Indexed: 10/19/2022] Open
Abstract
A robust fully automated algorithm for identifying an arbitrary number of landmark points in the human brain is described and validated. The proposed method combines statistical shape models with trained brain morphometric measures to estimate midbrain landmark positions reliably and accurately. Gross morphometric constraints provided by automatically identified eye centers and the center of the head mass are shown to provide robust initialization in the presence of large rotations in the initial head orientation. Detection of primary midbrain landmarks are used as the foundation from which extended detection of an arbitrary set of secondary landmarks in different brain regions by applying a linear model estimation and principle component analysis. This estimation model sequentially uses the knowledge of each additional detected landmark as an improved foundation for improved prediction of the next landmark location. The accuracy and robustness of the presented method was evaluated by comparing the automatically generated results to two manual raters on 30 identified landmark points extracted from each of 30 T1-weighted magnetic resonance images. For the landmarks with unambiguous anatomical definitions, the average discrepancy between the algorithm results and each human observer differed by less than 1 mm from the average inter-observer variability when the algorithm was evaluated on imaging data collected from the same site as the model building data. Similar results were obtained when the same model was applied to a set of heterogeneous image volumes from seven different collection sites representing 3 scanner manufacturers. This method is reliable for general application in large-scale multi-site studies that consist of a variety of imaging data with different orientations, spacings, origins, and field strengths.
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Affiliation(s)
- Ali Ghayoor
- Department of Electrical and Computer Engineering, 1402 Seamans Center for the Engineering Arts and Science, The University of Iowa, Iowa City, IA 52240, USA; Department of Psychiatry, University of Iowa Hospitals & Clinics, Iowa City, IA 52242, USA
| | - Jatin G Vaidya
- Department of Psychiatry, University of Iowa Hospitals & Clinics, Iowa City, IA 52242, USA
| | - Hans J Johnson
- Department of Electrical and Computer Engineering, 1402 Seamans Center for the Engineering Arts and Science, The University of Iowa, Iowa City, IA 52240, USA; Department of Psychiatry, University of Iowa Hospitals & Clinics, Iowa City, IA 52242, USA.
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31
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Forbes JL, Kim REY, Paulsen JS, Johnson HJ. An Open-Source Label Atlas Correction Tool and Preliminary Results on Huntingtons Disease Whole-Brain MRI Atlases. Front Neuroinform 2016; 10:29. [PMID: 27536233 PMCID: PMC4971025 DOI: 10.3389/fninf.2016.00029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 07/05/2016] [Indexed: 01/25/2023] Open
Abstract
The creation of high-quality medical imaging reference atlas datasets with consistent dense anatomical region labels is a challenging task. Reference atlases have many uses in medical image applications and are essential components of atlas-based segmentation tools commonly used for producing personalized anatomical measurements for individual subjects. The process of manual identification of anatomical regions by experts is regarded as a so-called gold standard; however, it is usually impractical because of the labor-intensive costs. Further, as the number of regions of interest increases, these manually created atlases often contain many small inconsistently labeled or disconnected regions that need to be identified and corrected. This project proposes an efficient process to drastically reduce the time necessary for manual revision in order to improve atlas label quality. We introduce the LabelAtlasEditor tool, a SimpleITK-based open-source label atlas correction tool distributed within the image visualization software 3D Slicer. LabelAtlasEditor incorporates several 3D Slicer widgets into one consistent interface and provides label-specific correction tools, allowing for rapid identification, navigation, and modification of the small, disconnected erroneous labels within an atlas. The technical details for the implementation and performance of LabelAtlasEditor are demonstrated using an application of improving a set of 20 Huntingtons Disease-specific multi-modal brain atlases. Additionally, we present the advantages and limitations of automatic atlas correction. After the correction of atlas inconsistencies and small, disconnected regions, the number of unidentified voxels for each dataset was reduced on average by 68.48%.
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Affiliation(s)
- Jessica L Forbes
- Department of Psychiatry, University of IowaIowa City, IA, USA; Department of Biomedical Engineering, University of IowaIowa City, IA, USA
| | - Regina E Y Kim
- Department of Psychiatry, University of Iowa Iowa City, IA, USA
| | - Jane S Paulsen
- Department of Psychiatry, University of IowaIowa City, IA, USA; Department of Neurology, Carver College of Medicine, University of IowaIowa City, IA, USA; Department of Neuroscience, Carver College of Medicine, University of IowaIowa City, IA, USA
| | - Hans J Johnson
- Department of Psychiatry, University of IowaIowa City, IA, USA; Department of Biomedical Engineering, University of IowaIowa City, IA, USA; Department of Electrical Engineering, University of IowaIowa City, IA, USA
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Brumbaugh JE, Conrad AL, Lee JK, DeVolder IJ, Zimmerman MB, Magnotta VA, Axelson ED, Nopoulos PC. Altered brain function, structure, and developmental trajectory in children born late preterm. Pediatr Res 2016; 80:197-203. [PMID: 27064239 PMCID: PMC4990473 DOI: 10.1038/pr.2016.82] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 02/29/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Late preterm birth (34-36 wk gestation) is a common occurrence with potential for altered brain development. METHODS This observational cohort study compared children at age 6-13 y based on the presence or absence of the historical risk factor of late preterm birth. Children completed a battery of cognitive assessments and underwent magnetic resonance imaging of the brain. RESULTS Late preterm children (n = 52) demonstrated slower processing speed (P = 0.035) and scored more poorly in visual-spatial perception (P = 0.032) and memory (P = 0.007) than full-term children (n = 74). Parents of late preterm children reported more behavioral difficulty (P = 0.004). There were no group differences in cognitive ability or academic achievement. Imaging revealed similar intracranial volumes but less total tissue and more cerebrospinal fluid (P = 0.004) for late preterm children compared to full-term children. The tissue difference was driven by differences in the cerebrum (P = 0.028) and distributed across cortical (P = 0.051) and subcortical tissue (P = 0.047). Late preterm children had a relatively smaller thalamus (P = 0.012) than full-term children. Only full-term children demonstrated significant decreases in cortical tissue volume (P < 0.001) and thickness (P < 0.001) with age. CONCLUSION Late preterm birth may affect cognition, behavior, and brain structure well beyond infancy.
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Affiliation(s)
- Jane E. Brumbaugh
- (corresponding author) Stead Family Department of Pediatrics, University of Iowa, 200 Hawkins Drive, 8805 JPP, Iowa City, IA 52242, , Phone (w): 319-384-6231, Phone (c): 651-260-5035, Fax: 319-356-4685
| | - Amy L. Conrad
- Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Jessica K. Lee
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
| | - Ian J. DeVolder
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
| | | | | | - Eric D. Axelson
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
| | - Peggy C. Nopoulos
- Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA, USA
- Department of Psychiatry, University of Iowa, Iowa City, IA, USA
- Department of Neurology, University of Iowa, Iowa City, IA, USA
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33
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Faria AV, Ratnanather JT, Tward DJ, Lee DS, van den Noort F, Wu D, Brown T, Johnson H, Paulsen JS, Ross CA, Younes L, Miller MI. Linking white matter and deep gray matter alterations in premanifest Huntington disease. Neuroimage Clin 2016; 11:450-460. [PMID: 27104139 PMCID: PMC4827723 DOI: 10.1016/j.nicl.2016.02.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 02/17/2016] [Accepted: 02/22/2016] [Indexed: 01/07/2023]
Abstract
Huntington disease (HD) is a fatal progressive neurodegenerative disorder for which only symptomatic treatment is available. A better understanding of the pathology, and identification of biomarkers will facilitate the development of disease-modifying treatments. HD is potentially a good model of a neurodegenerative disease for development of biomarkers because it is an autosomal-dominant disease with complete penetrance, caused by a single gene mutation, in which the neurodegenerative process can be assessed many years before onset of signs and symptoms of manifest disease. Previous MRI studies have detected abnormalities in gray and white matter starting in premanifest stages. However, the understanding of how these abnormalities are related, both in time and space, is still incomplete. In this study, we combined deep gray matter shape diffeomorphometry and white matter DTI analysis in order to provide a better mapping of pathology in the deep gray matter and subcortical white matter in premanifest HD. We used 296 MRI scans from the PREDICT-HD database. Atrophy in the deep gray matter, thalamus, hippocampus, and nucleus accumbens was analyzed by surface based morphometry, and while white matter abnormalities were analyzed in (i) regions of interest surrounding these structures, using (ii) tractography-based analysis, and using (iii) whole brain atlas-based analysis. We detected atrophy in the deep gray matter, particularly in putamen, from early premanifest stages. The atrophy was greater both in extent and effect size in cases with longer exposure to the effects of the CAG expansion mutation (as assessed by greater CAP-scores), and preceded detectible abnormalities in the white matter. Near the predicted onset of manifest HD, the MD increase was widespread, with highest indices in the deep and posterior white matter. This type of in-vivo macroscopic mapping of HD brain abnormalities can potentially indicate when and where therapeutics could be targeted to delay the onset or slow the disease progression.
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Affiliation(s)
- Andreia V Faria
- The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - J Tilak Ratnanather
- Center for Imaging Science, The Johns Hopkins University, Baltimore, MD, USA; Institute for Computational Medicine, The Johns Hopkins University, Baltimore, MD, USA; Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, USA
| | - Daniel J Tward
- Center for Imaging Science, The Johns Hopkins University, Baltimore, MD, USA; Institute for Computational Medicine, The Johns Hopkins University, Baltimore, MD, USA; Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, USA
| | - David Soobin Lee
- Center for Imaging Science, The Johns Hopkins University, Baltimore, MD, USA; Institute for Computational Medicine, The Johns Hopkins University, Baltimore, MD, USA; Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, USA
| | - Frieda van den Noort
- MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
| | - Dan Wu
- The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Timothy Brown
- Center for Imaging Science, The Johns Hopkins University, Baltimore, MD, USA
| | - Hans Johnson
- Department of Psychiatry, The University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Jane S Paulsen
- Department of Psychiatry, The University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Christopher A Ross
- Division of Neurobiology, Department of Psychiatry, and Departments of Neurology, Neuroscience and Pharmacology, Johns Hopkins University, Baltimore, MD, USA
| | - Laurent Younes
- Center for Imaging Science, The Johns Hopkins University, Baltimore, MD, USA; Institute for Computational Medicine, The Johns Hopkins University, Baltimore, MD, USA; Department of Applied Mathematics and Statistics, The Johns Hopkins University, Baltimore, MD, USA
| | - Michael I Miller
- Center for Imaging Science, The Johns Hopkins University, Baltimore, MD, USA; Institute for Computational Medicine, The Johns Hopkins University, Baltimore, MD, USA; Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, USA
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Guzmán-Vélez E, Warren DE, Feinstein JS, Bruss J, Tranel D. Dissociable contributions of amygdala and hippocampus to emotion and memory in patients with Alzheimer's disease. Hippocampus 2015; 26:727-38. [PMID: 26606553 DOI: 10.1002/hipo.22554] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/17/2015] [Indexed: 11/11/2022]
Abstract
The amygdala and the hippocampus are associated with emotional processing and declarative memory, respectively. Studies have shown that patients with bilateral hippocampal damage caused by anoxia/ischemia, and patients with probable Alzheimer's disease (AD), can experience emotions for prolonged periods of time, even when they cannot remember what caused the emotion in the first place (Feinstein et al. (2010) Proc Natl Acad Sci USA 107:7674-7679; Guzmán-Vélez et al. (2014) Cogn Behav Neurol 27:117-129). This study aimed to investigate, for the first time, the roles of the amygdala and hippocampus in the dissociation between feelings of emotion and declarative memory for emotion-inducing events in patients with AD. Individuals with probable AD (N = 12) and age-matched healthy comparisons participants (HCP; N = 12) completed a high-resolution (0.44 × 0.44 × 0.80 mm) T2-weighted structural MR scan of the medial temporal lobe. Each of these individuals also completed two separate emotion induction procedures (sadness and happiness) using film clips. We collected real-time emotion ratings at baseline and multiple times postinduction, and administered a test of declarative memory shortly after each induction. Consistent with previous research, hippocampal volume was significantly smaller in patients with AD compared with HCP, and was positively correlated with memory for the film clips. Sustained feelings of emotion and amygdala volume did not significantly differ between patients with AD and HCP. Follow-up analyses showed a significant negative correlation between amygdala volume and sustained sadness, and a significant positive correlation between amygdala volume and sustained happiness. Our findings suggest that the amygdala is important for regulating and sustaining an emotion independent of hippocampal function and declarative memory for the emotion-inducing event. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Edmarie Guzmán-Vélez
- Department of Psychological and Brain Sciences, University of Iowa.,Department of Neurology, University of Iowa College of Medicine, Iowa City, Iowa.,Division of Behavioral Neurology and Cognitive Neuroscience, University of Iowa College of Medicine, Iowa City, Iowa
| | - David E Warren
- Department of Neurology, University of Iowa College of Medicine, Iowa City, Iowa.,Division of Behavioral Neurology and Cognitive Neuroscience, University of Iowa College of Medicine, Iowa City, Iowa
| | - Justin S Feinstein
- Laureate Institute for Brain Research, Tulsa, Oklahoma.,Department of Psychology and Faculty of Community Medicine, University of Tulsa, Oklahoma
| | - Joel Bruss
- Department of Neurology, University of Iowa College of Medicine, Iowa City, Iowa.,Division of Behavioral Neurology and Cognitive Neuroscience, University of Iowa College of Medicine, Iowa City, Iowa
| | - Daniel Tranel
- Department of Psychological and Brain Sciences, University of Iowa.,Department of Neurology, University of Iowa College of Medicine, Iowa City, Iowa.,Division of Behavioral Neurology and Cognitive Neuroscience, University of Iowa College of Medicine, Iowa City, Iowa
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35
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Fiedorowicz JG, Prossin AR, Johnson CP, Christensen GE, Magnotta VA, Wemmie JA. Peripheral inflammation during abnormal mood states in bipolar I disorder. J Affect Disord 2015; 187:172-8. [PMID: 26339927 PMCID: PMC4587340 DOI: 10.1016/j.jad.2015.08.036] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Revised: 08/01/2015] [Accepted: 08/12/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND Bipolar disorder carries a substantive morbidity and mortality burden, particularly related to cardiovascular disease. Abnormalities in peripheral inflammatory markers, which have been commonly reported in case-control studies, potentially link these co-morbidities. However, it is not clear whether inflammatory markers change episodically in response to mood states or are indicative of chronic pro-inflammatory activity, regardless of mood, in bipolar disorder. METHODS Investigations focused on comparing concentrations of specific inflammatory cytokines associated with immune activation status (primary outcome=tumor necrosis factor alpha (TNF-α)) in 37 participants with bipolar disorder across 3 mood states (mania N=15, depression N=9, normal mood N=13) and 29 controls without a psychiatric disorder (total N=66). Cytokine levels were also compared to T1ρ, a potential neuroimaging marker for inflammation, in select brain regions in a subsample (N=39). RESULTS Participants with bipolar disorder and healthy controls did not differ significantly in inflammatory cytokine concentrations. However, compared to cases with normal mood, cases with abnormal mood states (mania and depression) had significantly elevated levels of TNF-α, its soluble receptors (sTNFR1/sTNFR2), other macrophage-derived cytokines (interleukin 1β (IL-1β), IL-6, IL-10, and IL-18) in addition to IL-4, interferon-γ, monocyte chemotactic protein-1, fibroblast growth factor β, and vascular endothelial growth factor. Cytokine levels were not correlated with signals from T1ρ imaging in selected structures (amygdalae, hippocampi, hypothalamus, anterior cingulate gyrus, and middle frontal gyrus). LIMITATIONS Participants were not followed prospectively across mood states. CONCLUSION Activation of inflammatory markers was found in abnormal mood states of bipolar disorder. Longitudinal study of individuals with mood disorders is needed to confirm these findings and to elucidate the time course of any such changes.
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Affiliation(s)
- Jess G. Fiedorowicz
- Department of Psychiatry, Roy J. and Lucille A. Carver College of Medicine, The University of Iowa, Iowa City, Iowa, 52242, Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, The University of Iowa, Iowa City, Iowa, 52242, Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, Iowa, 52242, Corresponding author. Address: 200 Hawkins Drive W278GH, Iowa City, IA 52242-1057, Phone: (319) 384-9267, Fax (319) 353-8656,
| | - Alan R. Prossin
- Department of Psychiatry, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Casey P. Johnson
- Department of Radiology, Roy J. and Lucille A. Carver College of Medicine, The University of Iowa, Iowa City, Iowa, 52242
| | - Gary E. Christensen
- Department of Radiation Oncology, Roy J. and Lucille A. Carver College of Medicine, The University of Iowa, Iowa City, Iowa, 52242, Department of Electrical and Computer Engineering, College of Engineering, The University of Iowa, Iowa City, Iowa, 52242
| | - Vincent A. Magnotta
- Department of Psychiatry, Roy J. and Lucille A. Carver College of Medicine, The University of Iowa, Iowa City, Iowa, 52242, Department of Radiology, Roy J. and Lucille A. Carver College of Medicine, The University of Iowa, Iowa City, Iowa, 52242
| | - John A. Wemmie
- Department of Psychiatry, Roy J. and Lucille A. Carver College of Medicine, The University of Iowa, Iowa City, Iowa, 52242, Veterans Affairs Hospital Center, Iowa City, IA
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36
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Matsui JT, Vaidya JG, Wassermann D, Kim RE, Magnotta VA, Johnson HJ, Paulsen JS. Prefrontal cortex white matter tracts in prodromal Huntington disease. Hum Brain Mapp 2015; 36:3717-32. [PMID: 26179962 PMCID: PMC4583330 DOI: 10.1002/hbm.22835] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 04/20/2015] [Accepted: 04/28/2015] [Indexed: 01/23/2023] Open
Abstract
Huntington disease (HD) is most widely known for its selective degeneration of striatal neurons but there is also growing evidence for white matter (WM) deterioration. The primary objective of this research was to conduct a large-scale analysis using multisite diffusion-weighted imaging (DWI) tractography data to quantify diffusivity properties along major prefrontal cortex WM tracts in prodromal HD. Fifteen international sites participating in the PREDICT-HD study collected imaging and neuropsychological data on gene-positive HD participants without a clinical diagnosis (i.e., prodromal) and gene-negative control participants. The anatomical prefrontal WM tracts of the corpus callosum (PFCC), anterior thalamic radiations (ATRs), inferior fronto-occipital fasciculi (IFO), and uncinate fasciculi (UNC) were identified using streamline tractography of DWI. Within each of these tracts, tensor scalars for fractional anisotropy, mean diffusivity, radial diffusivity, and axial diffusivity coefficients were calculated. We divided prodromal HD subjects into three CAG-age product (CAP) groups having Low, Medium, or High probabilities of onset indexed by genetic exposure. We observed significant differences in WM properties for each of the four anatomical tracts for the High CAP group in comparison to controls. Additionally, the Medium CAP group presented differences in the ATR and IFO in comparison to controls. Furthermore, WM alterations in the PFCC, ATR, and IFO showed robust associations with neuropsychological measures of executive functioning. These results suggest long-range tracts essential for cross-region information transfer show early vulnerability in HD and may explain cognitive problems often present in the prodromal stage. Hum Brain Mapp 36:3717-3732, 2015. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Joy T. Matsui
- Department of Psychiatry, Carver College of MedicineUniversity of IowaIowa CityIowa
- John A. Burns School of MedicineUniversity of HawaiiHonoluluHawaii
| | - Jatin G. Vaidya
- Department of Psychiatry, Carver College of MedicineUniversity of IowaIowa CityIowa
| | | | - Regina Eunyoung Kim
- Department of Psychiatry, Carver College of MedicineUniversity of IowaIowa CityIowa
| | - Vincent A. Magnotta
- Department of Psychiatry, Carver College of MedicineUniversity of IowaIowa CityIowa
- Department of Radiology, Carver College of MedicineUniversity of IowaIowa CityIowa
- Department of Biomedical Engineering, College of EngineeringUniversity of IowaIowa CityIowa
| | - Hans J. Johnson
- Department of Psychiatry, Carver College of MedicineUniversity of IowaIowa CityIowa
- Department of Biomedical Engineering, College of EngineeringUniversity of IowaIowa CityIowa
- Department of Electrical and Computer Engineering, College of EngineeringUniversity of IowaIowa CityIowa
| | - Jane S. Paulsen
- Department of Psychiatry, Carver College of MedicineUniversity of IowaIowa CityIowa
- Department of Neurology, Carver College of MedicineUniversity of IowaIowa CityIowa
- Department of PsychologyUniversity of IowaIowa CityIowa
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37
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Liu S, Cai W, Liu S, Zhang F, Fulham M, Feng D, Pujol S, Kikinis R. Multimodal neuroimaging computing: the workflows, methods, and platforms. Brain Inform 2015; 2:181-195. [PMID: 27747508 PMCID: PMC4737665 DOI: 10.1007/s40708-015-0020-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 08/20/2015] [Indexed: 12/20/2022] Open
Abstract
The last two decades have witnessed the explosive growth in the development and use of noninvasive neuroimaging technologies that advance the research on human brain under normal and pathological conditions. Multimodal neuroimaging has become a major driver of current neuroimaging research due to the recognition of the clinical benefits of multimodal data, and the better access to hybrid devices. Multimodal neuroimaging computing is very challenging, and requires sophisticated computing to address the variations in spatiotemporal resolution and merge the biophysical/biochemical information. We review the current workflows and methods for multimodal neuroimaging computing, and also demonstrate how to conduct research using the established neuroimaging computing packages and platforms.
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Affiliation(s)
- Sidong Liu
- School of IT, The University of Sydney, Sydney, Australia.
| | - Weidong Cai
- School of IT, The University of Sydney, Sydney, Australia
| | - Siqi Liu
- School of IT, The University of Sydney, Sydney, Australia
| | - Fan Zhang
- School of IT, The University of Sydney, Sydney, Australia
- Surgical Planning Laboratory, Harvard Medical School, Boston, USA
| | - Michael Fulham
- Department of PET and Nuclear Medicine, Royal Prince Alfred Hospital, Sydney Medical School, The University of Sydney, Sydney, Australia
| | - Dagan Feng
- School of IT, The University of Sydney, Sydney, Australia
- Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Sonia Pujol
- Surgical Planning Laboratory, Harvard Medical School, Boston, USA
| | - Ron Kikinis
- Surgical Planning Laboratory, Harvard Medical School, Boston, USA
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38
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Assessing atrophy measurement techniques in dementia: Results from the MIRIAD atrophy challenge. Neuroimage 2015; 123:149-64. [PMID: 26275383 PMCID: PMC4634338 DOI: 10.1016/j.neuroimage.2015.07.087] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 06/30/2015] [Accepted: 07/01/2015] [Indexed: 01/18/2023] Open
Abstract
Structural MRI is widely used for investigating brain atrophy in many neurodegenerative disorders, with several research groups developing and publishing techniques to provide quantitative assessments of this longitudinal change. Often techniques are compared through computation of required sample size estimates for future clinical trials. However interpretation of such comparisons is rendered complex because, despite using the same publicly available cohorts, the various techniques have been assessed with different data exclusions and different statistical analysis models. We created the MIRIAD atrophy challenge in order to test various capabilities of atrophy measurement techniques. The data consisted of 69 subjects (46 Alzheimer's disease, 23 control) who were scanned multiple (up to twelve) times at nine visits over a follow-up period of one to two years, resulting in 708 total image sets. Nine participating groups from 6 countries completed the challenge by providing volumetric measurements of key structures (whole brain, lateral ventricle, left and right hippocampi) for each dataset and atrophy measurements of these structures for each time point pair (both forward and backward) of a given subject. From these results, we formally compared techniques using exactly the same dataset. First, we assessed the repeatability of each technique using rates obtained from short intervals where no measurable atrophy is expected. For those measures that provided direct measures of atrophy between pairs of images, we also assessed symmetry and transitivity. Then, we performed a statistical analysis in a consistent manner using linear mixed effect models. The models, one for repeated measures of volume made at multiple time-points and a second for repeated “direct” measures of change in brain volume, appropriately allowed for the correlation between measures made on the same subject and were shown to fit the data well. From these models, we obtained estimates of the distribution of atrophy rates in the Alzheimer's disease (AD) and control groups and of required sample sizes to detect a 25% treatment effect, in relation to healthy ageing, with 95% significance and 80% power over follow-up periods of 6, 12, and 24 months. Uncertainty in these estimates, and head-to-head comparisons between techniques, were carried out using the bootstrap. The lateral ventricles provided the most stable measurements, followed by the brain. The hippocampi had much more variability across participants, likely because of differences in segmentation protocol and less distinct boundaries. Most methods showed no indication of bias based on the short-term interval results, and direct measures provided good consistency in terms of symmetry and transitivity. The resulting annualized rates of change derived from the model ranged from, for whole brain: − 1.4% to − 2.2% (AD) and − 0.35% to − 0.67% (control), for ventricles: 4.6% to 10.2% (AD) and 1.2% to 3.4% (control), and for hippocampi: − 1.5% to − 7.0% (AD) and − 0.4% to − 1.4% (control). There were large and statistically significant differences in the sample size requirements between many of the techniques. The lowest sample sizes for each of these structures, for a trial with a 12 month follow-up period, were 242 (95% CI: 154 to 422) for whole brain, 168 (95% CI: 112 to 282) for ventricles, 190 (95% CI: 146 to 268) for left hippocampi, and 158 (95% CI: 116 to 228) for right hippocampi. This analysis represents one of the most extensive statistical comparisons of a large number of different atrophy measurement techniques from around the globe. The challenge data will remain online and publicly available so that other groups can assess their methods. We compared numerous brain atrophy measurement techniques using multiple metrics. Each participant produced measures on the exact same dataset, blinded to disease. A central statistical analysis using linear mixed effect models was performed. Head to head comparisons for each region were performed using sample size estimates. Brain and ventricle measures were more consistent across groups than for hippocampi.
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Beadle JN, Paradiso S, Brumm M, Voss M, Halmi K, McCormick LM. Larger hippocampus size in women with anorexia nervosa who exercise excessively than healthy women. Psychiatry Res 2015; 232:193-9. [PMID: 25624068 DOI: 10.1016/j.pscychresns.2014.10.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 10/13/2014] [Accepted: 10/15/2014] [Indexed: 11/16/2022]
Abstract
Exercise has been shown to increase hippocampal volume in healthy older adults. Observations from animal models of diabetes and hypertension suggest that the combination of exercise and caloric restriction may exert greater neuroprotection in the hippocampus than either behavior alone. Yet, in humans, the effects of exercise and caloric restriction on the hippocampus are not known. We measured the volume of the hippocampus prior to clinical treatment in women with anorexia nervosa (AN) who were restricting calories and engaging in excessive exercise, women with AN who did not exercise excessively, and healthy women who did not engage in either behavior. Women with AN were also examined longitudinally (once weight was restored and 6 months later). In the present report, we found that women with AN engaged in caloric restriction and excessive exercising prior to clinical treatment had larger hippocampal volumes than healthy comparison women. After weight restoration, women with AN who had engaged in food restriction and excessive exercise prior to treatment had hippocampal volumes similar to that of women with AN who only engaged in caloric restriction. These results advance the field by showing for the first time that hippocampal volume may be increased by exercise alone or exercise interacting with food restriction in AN.
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Affiliation(s)
- Janelle N Beadle
- Department of Psychiatry, Roy J. & Lucille A. Carver College of Medicine, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Sergio Paradiso
- Una Mano per La Vita Not for Profit Association of Families and their Doctors, Italy; UDP-INECO Foundation Core on Neuroscience (UIFCoN), Diego Portales University, Santiago, Chile
| | - Michael Brumm
- Department of Psychiatry, Roy J. & Lucille A. Carver College of Medicine, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Michelle Voss
- Department of Psychology, University of Iowa, Iowa City, IA, USA
| | - Katherine Halmi
- Weill Cornell Medical College, Cornell University, Ithaca, NY, USA
| | - Laurie M McCormick
- Department of Psychiatry, Roy J. & Lucille A. Carver College of Medicine, University of Iowa Hospitals and Clinics, Iowa City, IA, USA.
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40
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Wassef SN, Wemmie J, Johnson CP, Johnson H, Paulsen JS, Long JD, Magnotta VA. T1ρ imaging in premanifest Huntington disease reveals changes associated with disease progression. Mov Disord 2015; 30:1107-14. [PMID: 25820773 DOI: 10.1002/mds.26203] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 01/23/2015] [Accepted: 01/26/2015] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Imaging biomarkers sensitive to Huntington's disease (HD) during the premanifest phase preceding motor diagnosis may accelerate identification and evaluation of potential therapies. For this purpose, quantitative MRI sensitive to tissue microstructure and metabolism may hold great potential. We investigated the potential value of T1ρ relaxation to detect pathological changes in premanifest HD (preHD) relative to other quantitative relaxation parameters. METHODS Quantitative MR parametric mapping was used to assess differences between 50 preHD subjects and 26 age- and sex-matched controls. Subjects with preHD were classified into two progression groups based on their CAG-age product (CAP) score; a high and a low/moderate CAP group. Voxel-wise and region-of-interest analyses were used to assess changes in the quantitative relaxation times. RESULTS T1ρ showed a significant increase in the relaxation times in the high-CAP group, as compared to controls, largely in the striatum. The T1ρ changes in the preHD subjects showed a significant relationship with CAP score. No significant changes in T2 or T2* relaxation times were found in the striatum. T2* relaxation changes were found in the globus pallidus, but no significant changes with disease progression were found. CONCLUSION These data suggest that quantitative T1ρ mapping may provide a useful marker for assessing disease progression in HD. The absence of T2 changes suggests that the T1ρ abnormalities are unlikely owing to altered water content or tissue structure. The established sensitivity of T1ρ to pH and glucose suggests that these factors are altered in HD perhaps owing to abnormal mitochondrial function.
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Affiliation(s)
- Shafik N Wassef
- Department of Radiology, University of Iowa, Iowa City, Iowa, USA.,SINAPSE, Iowa Neuroimaging Consortium, Department of Psychiatry, University of Iowa, Iowa City, Iowa, USA
| | - John Wemmie
- Department of Psychiatry, University of Iowa, Iowa City, Iowa, USA.,Department of Neurosurgery, University of Iowa, Iowa City, Iowa, USA.,Veterans Affairs Hospital Center, Iowa City, IA, USA
| | - Casey P Johnson
- Department of Radiology, University of Iowa, Iowa City, Iowa, USA
| | - Hans Johnson
- SINAPSE, Iowa Neuroimaging Consortium, Department of Psychiatry, University of Iowa, Iowa City, Iowa, USA
| | - Jane S Paulsen
- Department of Psychiatry, University of Iowa, Iowa City, Iowa, USA.,Department of Neurology, University of Iowa, Iowa City, Iowa, USA.,Department of Psychology, University of Iowa, Iowa City, Iowa, USA
| | - Jeffrey D Long
- Department of Psychiatry, University of Iowa, Iowa City, Iowa, USA.,Department of Biostatistics, University of Iowa, Iowa City, Iowa, USA
| | - Vincent A Magnotta
- Department of Radiology, University of Iowa, Iowa City, Iowa, USA.,Department of Psychiatry, University of Iowa, Iowa City, Iowa, USA.,Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa, USA
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41
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Brain abnormalities in bipolar disorder detected by quantitative T1ρ mapping. Mol Psychiatry 2015; 20:201-6. [PMID: 25560762 PMCID: PMC4346383 DOI: 10.1038/mp.2014.157] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/19/2014] [Accepted: 10/09/2014] [Indexed: 12/21/2022]
Abstract
Abnormal metabolism has been reported in bipolar disorder, however, these studies have been limited to specific regions of the brain. To investigate whole-brain changes potentially associated with these processes, we applied a magnetic resonance imaging technique novel to psychiatric research, quantitative mapping of T1 relaxation in the rotating frame (T1ρ). This method is sensitive to proton chemical exchange, which is affected by pH, metabolite concentrations and cellular density with high spatial resolution relative to alternative techniques such as magnetic resonance spectroscopy and positron emission tomography. Study participants included 15 patients with bipolar I disorder in the euthymic state and 25 normal controls balanced for age and gender. T1ρ maps were generated and compared between the bipolar and control groups using voxel-wise and regional analyses. T1ρ values were found to be elevated in the cerebral white matter and cerebellum in the bipolar group. However, volumes of these areas were normal as measured by high-resolution T1- and T2-weighted magnetic resonance imaging. Interestingly, the cerebellar T1ρ abnormalities were normalized in participants receiving lithium treatment. These findings are consistent with metabolic or microstructural abnormalities in bipolar disorder and draw attention to roles of the cerebral white matter and cerebellum. This study highlights the potential utility of high-resolution T1ρ mapping in psychiatric research.
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Aylward EH, Harrington DL, Mills JA, Nopoulos PC, Ross CA, Long JD, Liu D, Westervelt HK, Paulsen JS. Regional atrophy associated with cognitive and motor function in prodromal Huntington disease. J Huntingtons Dis 2014; 2:477-89. [PMID: 25062732 DOI: 10.3233/jhd-130076] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Neuroimaging studies suggest that volumetric MRI measures of specific brain structures may serve as excellent biomarkers in future clinical trials of Huntington disease (HD). OBJECTIVE Demonstration of the clinical significance of these measures is an important step in determining their appropriateness as potential outcome measures. METHODS Measures of gray- and white-matter lobular volumes and subcortical volumes (caudate, putamen, globus pallidus, thalamus, nucleus accumbens, hippocampus) were obtained from MRI scans of 516 individuals who tested positive for the HD gene expansion, but were not yet exhibiting signs or symptoms severe enough to warrant diagnosis ("pre-HD"). MRI volumes (corrected for intracranial volume) were correlated with cognitive, motor, psychiatric, and functional measures known to be sensitive to subtle changes in pre-HD. RESULTS Caudate, putamen, and globus pallidus volumes consistently correlated with cognitive and motor, but not psychiatric or functional measures in pre-HD. Volumes of white matter, nucleus accumbens, and thalamus, but not cortical gray matter, also correlated with some of the motor and cognitive measures. CONCLUSIONS Results of regression analyses suggest that volumes of basal ganglia structures contributed more highly to the prediction of most motor and cognitive variables than volumes of other brain regions. These results support the use of volumetric measures, especially of the basal ganglia, as outcome measures in future clinical trials in pre-HD. Results may also assist investigators in selecting the most appropriate measures for treatment trials that target specific clinical features or regions of neuropathology.
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Affiliation(s)
- Elizabeth H Aylward
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA, USA
| | - Deborah L Harrington
- Department of Radiology, University of California, San Diego, La Jolla, CA, USA VA San Diego Healthcare System, Research Service, San Diego, CA, USA
| | - James A Mills
- Department of Psychiatry, The University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Peggy C Nopoulos
- Department of Psychiatry, The University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Christopher A Ross
- Departments of Psychiatry, Neurology and Neuroscience, Johns Hopkins University, Baltimore, MD, USA
| | - Jeffrey D Long
- Department of Psychiatry, The University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Dawei Liu
- Department of Psychiatry, The University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Holly K Westervelt
- Division of Biology and Medicine, Department of Psychiatry and Human Behavior, Brown University, Providence, RI, USA
| | - Jane S Paulsen
- Departments of Psychiatry, Neurology, Psychology and Neuroscience, The University of Iowa Carver College of Medicine, Iowa City, IA, USA
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Fedorov A, Wells WM, Kikinis R, Tempany CM, Vangel MG. Application of tolerance limits to the characterization of image registration performance. IEEE TRANSACTIONS ON MEDICAL IMAGING 2014; 33:1541-50. [PMID: 24759985 PMCID: PMC4096345 DOI: 10.1109/tmi.2014.2317796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Deformable image registration is used increasingly in image-guided interventions and other applications. However, validation and characterization of registration performance remain areas that require further study. We propose an analysis methodology for deriving tolerance limits on the initial conditions for deformable registration that reliably lead to a successful registration. This approach results in a concise summary of the probability of registration failure, while accounting for the variability in the test data. The (β, γ) tolerance limit can be interpreted as a value of the input parameter that leads to successful registration outcome in at least 100β% of cases with the 100γ% confidence. The utility of the methodology is illustrated by summarizing the performance of a deformable registration algorithm evaluated in three different experimental setups of increasing complexity. Our examples are based on clinical data collected during MRI-guided prostate biopsy registered using publicly available deformable registration tool. The results indicate that the proposed methodology can be used to generate concise graphical summaries of the experiments, as well as a probabilistic estimate of the registration outcome for a future sample. Its use may facilitate improved objective assessment, comparison and retrospective stress-testing of deformable.
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Affiliation(s)
- Andriy Fedorov
- Radiology Department, Brigham and Women's Hospital, Boston, MA 02115 USA
| | - William M. Wells
- Brigham and Women's Hospital, Radiology, Boston, MA 02115 USA, and also with Harvard Medical School, Boston, MA 02115 USA, and also with the Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139 USA ()
| | - Ron Kikinis
- Brigham and Women's Hospital, Radiology, Boston, MA 02115 USA and also with Harvard Medical School, Boston, MA 02115 USA
| | - Clare M. Tempany
- Brigham and Women's Hospital, Radiology, Boston, MA 02115 USA and also with Harvard Medical School, Boston, MA 02115 USA
| | - Mark G. Vangel
- Radiology Department, Massachusetts General Hospital, Boston, MA 02114 USA ()
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McCoy TE, Conrad AL, Richman LC, Brumbaugh JE, Magnotta VA, Bell EF, Nopoulos PC. The relationship between brain structure and cognition in transfused preterm children at school age. Dev Neuropsychol 2014; 39:226-32. [PMID: 24742312 DOI: 10.1080/87565641.2013.874428] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Examine the relationship between brain structure and cognition in preterm children randomly assigned to a liberal red blood cell (RBC) transfusion strategy as neonates. Intelligence, achievement, and neuropsychological measures were assessed and structural imaging was obtained (n = 26; 38% male). Global brain volumes were related to cognitive outcome. Additionally, females performed lower on verbal fluency; lower performance was related to temporal white matter volume. Findings provide possible evidence of the adverse effect of a liberal RBC transfusion strategy in which females had decreased temporal lobe white matter directly related to poor verbal fluency.
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Affiliation(s)
- Thomasin E McCoy
- a Hope Springs Behavioral Consultants, PLC (Private Practice) , Coralville , Iowa
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45
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Thompson PM, Stein JL, Medland SE, Hibar DP, Vasquez AA, Renteria ME, Toro R, Jahanshad N, Schumann G, Franke B, Wright MJ, Martin NG, Agartz I, Alda M, Alhusaini S, Almasy L, Almeida J, Alpert K, Andreasen NC, Andreassen OA, Apostolova LG, Appel K, Armstrong NJ, Aribisala B, Bastin ME, Bauer M, Bearden CE, Bergmann Ø, Binder EB, Blangero J, Bockholt HJ, Bøen E, Bois C, Boomsma DI, Booth T, Bowman IJ, Bralten J, Brouwer RM, Brunner HG, Brohawn DG, Buckner RL, Buitelaar J, Bulayeva K, Bustillo JR, Calhoun VD, Cannon DM, Cantor RM, Carless MA, Caseras X, Cavalleri GL, Chakravarty MM, Chang KD, Ching CRK, Christoforou A, Cichon S, Clark VP, Conrod P, Coppola G, Crespo-Facorro B, Curran JE, Czisch M, Deary IJ, de Geus EJC, den Braber A, Delvecchio G, Depondt C, de Haan L, de Zubicaray GI, Dima D, Dimitrova R, Djurovic S, Dong H, Donohoe G, Duggirala R, Dyer TD, Ehrlich S, Ekman CJ, Elvsåshagen T, Emsell L, Erk S, Espeseth T, Fagerness J, Fears S, Fedko I, Fernández G, Fisher SE, Foroud T, Fox PT, Francks C, Frangou S, Frey EM, Frodl T, Frouin V, Garavan H, Giddaluru S, Glahn DC, Godlewska B, Goldstein RZ, Gollub RL, Grabe HJ, Grimm O, Gruber O, Guadalupe T, Gur RE, Gur RC, Göring HHH, Hagenaars S, Hajek T, Hall GB, Hall J, Hardy J, Hartman CA, Hass J, Hatton SN, Haukvik UK, Hegenscheid K, Heinz A, Hickie IB, Ho BC, Hoehn D, Hoekstra PJ, Hollinshead M, Holmes AJ, Homuth G, Hoogman M, Hong LE, Hosten N, Hottenga JJ, Hulshoff Pol HE, Hwang KS, Jack CR, Jenkinson M, Johnston C, Jönsson EG, Kahn RS, Kasperaviciute D, Kelly S, Kim S, Kochunov P, Koenders L, Krämer B, Kwok JBJ, Lagopoulos J, Laje G, Landen M, Landman BA, Lauriello J, Lawrie SM, Lee PH, Le Hellard S, Lemaître H, Leonardo CD, Li CS, Liberg B, Liewald DC, Liu X, Lopez LM, Loth E, Lourdusamy A, Luciano M, Macciardi F, Machielsen MWJ, MacQueen GM, Malt UF, Mandl R, Manoach DS, Martinot JL, Matarin M, Mather KA, Mattheisen M, Mattingsdal M, Meyer-Lindenberg A, McDonald C, McIntosh AM, McMahon FJ, McMahon KL, Meisenzahl E, Melle I, Milaneschi Y, Mohnke S, Montgomery GW, Morris DW, Moses EK, Mueller BA, Muñoz Maniega S, Mühleisen TW, Müller-Myhsok B, Mwangi B, Nauck M, Nho K, Nichols TE, Nilsson LG, Nugent AC, Nyberg L, Olvera RL, Oosterlaan J, Ophoff RA, Pandolfo M, Papalampropoulou-Tsiridou M, Papmeyer M, Paus T, Pausova Z, Pearlson GD, Penninx BW, Peterson CP, Pfennig A, Phillips M, Pike GB, Poline JB, Potkin SG, Pütz B, Ramasamy A, Rasmussen J, Rietschel M, Rijpkema M, Risacher SL, Roffman JL, Roiz-Santiañez R, Romanczuk-Seiferth N, Rose EJ, Royle NA, Rujescu D, Ryten M, Sachdev PS, Salami A, Satterthwaite TD, Savitz J, Saykin AJ, Scanlon C, Schmaal L, Schnack HG, Schork AJ, Schulz SC, Schür R, Seidman L, Shen L, Shoemaker JM, Simmons A, Sisodiya SM, Smith C, Smoller JW, Soares JC, Sponheim SR, Sprooten E, Starr JM, Steen VM, Strakowski S, Strike L, Sussmann J, Sämann PG, Teumer A, Toga AW, Tordesillas-Gutierrez D, Trabzuni D, Trost S, Turner J, Van den Heuvel M, van der Wee NJ, van Eijk K, van Erp TGM, van Haren NEM, van ‘t Ent D, van Tol MJ, Valdés Hernández MC, Veltman DJ, Versace A, Völzke H, Walker R, Walter H, Wang L, Wardlaw JM, Weale ME, Weiner MW, Wen W, Westlye LT, Whalley HC, Whelan CD, White T, Winkler AM, Wittfeld K, Woldehawariat G, Wolf C, Zilles D, Zwiers MP, Thalamuthu A, Schofield PR, Freimer NB, Lawrence NS, Drevets W. The ENIGMA Consortium: large-scale collaborative analyses of neuroimaging and genetic data. Brain Imaging Behav 2014; 8:153-82. [PMID: 24399358 PMCID: PMC4008818 DOI: 10.1007/s11682-013-9269-5] [Citation(s) in RCA: 494] [Impact Index Per Article: 49.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The Enhancing NeuroImaging Genetics through Meta-Analysis (ENIGMA) Consortium is a collaborative network of researchers working together on a range of large-scale studies that integrate data from 70 institutions worldwide. Organized into Working Groups that tackle questions in neuroscience, genetics, and medicine, ENIGMA studies have analyzed neuroimaging data from over 12,826 subjects. In addition, data from 12,171 individuals were provided by the CHARGE consortium for replication of findings, in a total of 24,997 subjects. By meta-analyzing results from many sites, ENIGMA has detected factors that affect the brain that no individual site could detect on its own, and that require larger numbers of subjects than any individual neuroimaging study has currently collected. ENIGMA's first project was a genome-wide association study identifying common variants in the genome associated with hippocampal volume or intracranial volume. Continuing work is exploring genetic associations with subcortical volumes (ENIGMA2) and white matter microstructure (ENIGMA-DTI). Working groups also focus on understanding how schizophrenia, bipolar illness, major depression and attention deficit/hyperactivity disorder (ADHD) affect the brain. We review the current progress of the ENIGMA Consortium, along with challenges and unexpected discoveries made on the way.
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Affiliation(s)
- Paul M. Thompson
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Keck School of Medicine, University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90033 USA
| | - Jason L. Stein
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095 Netherlands
| | - Sarah E. Medland
- QIMR Berghofer Medical Research Institute, Quantitative Genetics, Brisbane, Australia
| | - Derrek P. Hibar
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Keck School of Medicine, University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90033 USA
| | - Alejandro Arias Vasquez
- Department of Human Genetics, Radboud University Medical Centre, Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Miguel E. Renteria
- QIMR Berghofer Medical Research Institute, Quantitative Genetics, Brisbane, Australia
| | - Roberto Toro
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France
- CNRS URA 2182 ‘Genes, synapses and cognition’, Institut Pasteur, Paris, France
- Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Université Paris Diderot, Paris, France
| | - Neda Jahanshad
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Keck School of Medicine, University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90033 USA
| | - Gunter Schumann
- MRC-SGDP Centre, Institute of Psychiatry, King’s College London, London, UK
| | - Barbara Franke
- Department of Human Genetics, Radboud University Medical Centre, Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Margaret J. Wright
- QIMR Berghofer Medical Research Institute, Neuroimaging Genetics, Brisbane, Australia
| | - Nicholas G. Martin
- QIMR Berghofer Medical Research Institute, Genetic Epidemiology, Brisbane, Australia
| | - Ingrid Agartz
- Department of Clinical Neuroscience, Karolinska Institutet and Hospital, Stockholm, Sweden
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Martin Alda
- Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia Canada
| | - Saud Alhusaini
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
- Department of Neurology and NeuroSurgery, McGill University, Montreal, Quebec Canada
| | - Laura Almasy
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX USA
| | - Jorge Almeida
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA USA
- Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia Canada
| | - Kathryn Alpert
- Departments of Psychiatry and Behavioral Sciences and Radiology, Northwestern University, Chicago, IL USA
| | | | - Ole A. Andreassen
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Liana G. Apostolova
- Department of Neurology, David Geffen School of Medicine, UCLA, Los Angeles, CA USA
| | - Katja Appel
- Department of Psychiatry and Psychotherapy, University of Greifswald, Greifswald, Germany
| | - Nicola J. Armstrong
- School of Mathematics and Statistics, University of Sydney, Sydney, Australia
| | - Benjamin Aribisala
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
- Scottish Imaging Network, A Platform for Scientific Excellence (SINAPSE) Collaboration, Scotland, UK
- Brain Research Imaging Centre, The University of Edinburgh, Edinburgh, UK
| | - Mark E. Bastin
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
- Brain Research Imaging Centre, The University of Edinburgh, Edinburgh, UK
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, UK
| | - Michael Bauer
- Department of Psychiatry and Psychotherapy, Carl Gustav Carus University Hospital, Dresden, Germany
| | - Carrie E. Bearden
- Department of Psychiatry and Biobehavioral Sciences and the Center for Neurobehavioral Genetics, The Semel Institute for Neuroscience and Human Behavior, UCLA, Los Angeles, CA USA
- Department of Psychology, UCLA, Los Angeles, CA USA
| | - Ørjan Bergmann
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | | | - John Blangero
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX USA
| | | | - Erlend Bøen
- Department of Psychosomatic Medicine, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Catherine Bois
- Division of Psychiatry, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
| | - Dorret I. Boomsma
- Department of Biological Psychology, VU University, Neuroscience Campus, Amsterdam, The Netherlands
- EMGO + Institute, VU University Medical Center, Amsterdam, The Netherlands
| | - Tom Booth
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
| | - Ian J. Bowman
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Keck School of Medicine, University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90033 USA
| | - Janita Bralten
- Department of Human Genetics, Radboud University Medical Centre, Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands
- Department of Cognitive Neuroscience, Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behavior, Nijmegen, The Netherlands
| | - Rachel M. Brouwer
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Han G. Brunner
- Department of Human Genetics, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - David G. Brohawn
- Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA USA
| | - Randy L. Buckner
- Massachusetts General Hospital, Boston, MA USA
- Center for Brain Science, Harvard University, Cambridge, MA USA
| | - Jan Buitelaar
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands
- Karakter Child and Adolescent Psychiatry University Center, Nijmegen, The Netherlands
| | - Kazima Bulayeva
- N. I. Vavilov Institute of General Genetics, Russian Academy of Sciences, Gubkin str. 3, Moscow, 119991 Russia
| | - Juan R. Bustillo
- Department of Psychiatry, University of New Mexico, Albuquerque, NM USA
| | - Vince D. Calhoun
- The Mind Research Network, Albuquerque, NM USA
- Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM USA
| | - Dara M. Cannon
- Clinical Neuroimaging Laboratory, National University of Ireland Galway, University Road, Galway, Ireland
| | - Rita M. Cantor
- Center for Neurobehavioral Genetics, University of California, Los Angeles, CA USA
| | - Melanie A. Carless
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX USA
| | - Xavier Caseras
- MRC Centre for Neuropsychiatric Genetics and Genomics, Institute of Psychological Medicine and Clinical Neurosciences, Cardiff University, Cardiff, UK
| | - Gianpiero L. Cavalleri
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - M. Mallar Chakravarty
- The Kimel Family Translational Imaging Genetics Laboratory, The Centre for Addiction and Mental Health, Toronto, ON Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON Canada
| | - Kiki D. Chang
- Department of Psychiatry, Stanford University School of Medicine, Stanford, CA USA
| | - Christopher R. K. Ching
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Keck School of Medicine, University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90033 USA
| | - Andrea Christoforou
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Dr Einar Martens Research Group for Biological Psychiatry, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Sven Cichon
- Institute of Human Genetics, University of Bonn, Bonn, Germany
- Institute for Neuroscience and Medicine (INM-1), Centre Jülich, Jülich, Germany
- Division of Medical Genetics, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Vincent P. Clark
- Department of Psychology, University of New Mexico, Albuquerque, NM USA
| | - Patricia Conrod
- CHU Sainte Justine University Hospital Research Center, Montreal, QC Canada
- Addictions Department, King’s Health Partners, King’s College London, London, UK
| | - Giovanni Coppola
- Department of Neurology, David Geffen School of Medicine, UCLA, Los Angeles, CA USA
- Department of Psychiatry and Biobehavioral Sciences and the Center for Neurobehavioral Genetics, The Semel Institute for Neuroscience and Human Behavior, UCLA, Los Angeles, CA USA
| | - Benedicto Crespo-Facorro
- Department of Psychiatry, Marqués de Valdecilla University Hospital, IFIMAV, School of Medicine, University of Cantabria, Santander, Spain
- Centro Investigación Biomédica en Red Salud Mental (CIBERSAM), Madrid, Spain
| | - Joanne E. Curran
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX USA
| | | | - Ian J. Deary
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
| | - Eco J. C. de Geus
- Department of Biological Psychology, VU University, Neuroscience Campus, Amsterdam, The Netherlands
- EMGO + Institute, VU University Medical Center, Amsterdam, The Netherlands
| | - Anouk den Braber
- Department of Biological Psychology, VU University, Neuroscience Campus, Amsterdam, The Netherlands
| | | | - Chantal Depondt
- Department of Neurology, Hopital Erasme, Universite Libre de Bruxelles, 1070 Brussels, Belgium
| | - Lieuwe de Haan
- EMGO + Institute, VU University Medical Center, Amsterdam, The Netherlands
| | | | - Danai Dima
- MRC-SGDP Centre, Institute of Psychiatry, King’s College London, London, UK
| | - Rali Dimitrova
- Division of Psychiatry, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
| | - Srdjan Djurovic
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - Hongwei Dong
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Keck School of Medicine, University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90033 USA
| | - Gary Donohoe
- Clinical Neuroimaging Laboratory, National University of Ireland Galway, University Road, Galway, Ireland
- Neuropsychiatric Genetics Research Group, Department of Psychiatry, Institute for Molecular Medicine and Trinity College Institute for Neuroscience, Trinity College, Dublin, Ireland
| | | | - Thomas D. Dyer
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX USA
| | - Stefan Ehrlich
- MGH/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA USA
- University Hospital C.G. Carus, Department of Child and Adolescent Psychiatry, Dresden University of Technology, Dresden, Germany
| | - Carl Johan Ekman
- Department of Clinical Neuroscience, Karolinska Institutet and Hospital, Stockholm, Sweden
| | - Torbjørn Elvsåshagen
- Department of Psychosomatic Medicine, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Louise Emsell
- Clinical Neuroimaging Laboratory, National University of Ireland Galway, University Road, Galway, Ireland
| | - Susanne Erk
- Department of Psychiatry and Psychotherapy, Charité, Universitaetsmedizin Berlin, Charitè Campus Mitte, Berlin, Germany
| | - Thomas Espeseth
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Psychology, University of Oslo, Oslo, Norway
| | - Jesen Fagerness
- Massachusetts General Hospital, Boston, MA USA
- Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA USA
| | - Scott Fears
- Center for Neurobehavioral Genetics, University of California, Los Angeles, CA USA
- Department of Psychiatry and Biobehavioral Sciences and the Center for Neurobehavioral Genetics, The Semel Institute for Neuroscience and Human Behavior, UCLA, Los Angeles, CA USA
| | - Iryna Fedko
- Department of Biological Psychology, VU University, Neuroscience Campus, Amsterdam, The Netherlands
| | - Guillén Fernández
- Department of Cognitive Neuroscience, Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behavior, Nijmegen, The Netherlands
| | - Simon E. Fisher
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands
- Max Planck Institute for Psycholinguistics, 6500 AH Nijmegen, The Netherlands
| | - Tatiana Foroud
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN USA
| | - Peter T. Fox
- Research Imaging Institute, UT Health Science Center at San Antonio, San Antonio, TX USA
- South Texas Veterans Health Care Center, San Antonio, TX USA
- South Texas Veterans Health Care System, San Antonio, TX USA
| | - Clyde Francks
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands
- Max Planck Institute for Psycholinguistics, 6500 AH Nijmegen, The Netherlands
| | - Sophia Frangou
- Psychosis Research Unit, Mount Sinai School of Medicine, New York, NY USA
| | - Eva Maria Frey
- Department of Psychiatry and Psychotherapy, University Regensburg, Regensburg, Germany
| | - Thomas Frodl
- Department of Psychiatry and Psychotherapy, University Regensburg, Regensburg, Germany
- Department of Psychiatry and Psychotherapy, Trinity College, University Dublin, Dublin, Germany
| | - Vincent Frouin
- Neurospin, Commissariat à l’Energie Atomique, Paris, France
| | - Hugh Garavan
- Department of Psychiatry, UHC University of Vermont, Bergen, VT USA
| | - Sudheer Giddaluru
- Dr Einar Martens Research Group for Biological Psychiatry, Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Bergen, Norway
| | - David C. Glahn
- Olin Neuropsychiatry Research Center, Institute of Living, Hartford Hospital, Hartford, CT USA
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT USA
| | | | - Rita Z. Goldstein
- Department of Psychiatry and Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Randy L. Gollub
- MGH/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA USA
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA USA
| | - Hans J. Grabe
- Department of Psychiatry and Psychotherapy, University of Greifswald, Greifswald, Germany
- German Center for Neurodegenerative Diseases (DZNE), University of Greifswald, Greifswald, Germany
- Department of Psychiatry and Psychotherapy, Helios Hospital Stralsund, Stralsund, Germany
| | - Oliver Grimm
- Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Oliver Gruber
- Center for Translational Research in Systems Neuroscience and Psychiatry, Department of Psychiatry, Georg August University, Goettingen, Germany
| | - Tulio Guadalupe
- Max Planck Institute for Psycholinguistics, 6500 AH Nijmegen, The Netherlands
| | - Raquel E. Gur
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA USA
| | - Ruben C. Gur
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA USA
- Philadelphia Veterans Administration Medical Center, Philadelphia, PA USA
| | - Harald H. H. Göring
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX USA
| | - Saskia Hagenaars
- Division of Psychiatry, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
| | - Tomas Hajek
- Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia Canada
| | - Geoffrey B. Hall
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON Canada
| | - Jeremy Hall
- Division of Psychiatry, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
- Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, UK
| | - John Hardy
- Department of Molecular Neuroscience, UCL Institute, London, UK
| | - Catharina A. Hartman
- Department of Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Johanna Hass
- University Hospital C.G. Carus, Department of Child and Adolescent Psychiatry, Dresden University of Technology, Dresden, Germany
| | - Sean N. Hatton
- The Brain and Mind Research Institute, University of Sydney, Sydney, Australia
| | - Unn K. Haukvik
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway
| | - Katrin Hegenscheid
- Department of Diagnostic Radiology and Neuroradiology, University of Greifswald, Greifswald, Germany
| | - Andreas Heinz
- Department of Psychiatry and Psychotherapy, Charité, Universitaetsmedizin Berlin, Charitè Campus Mitte, Berlin, Germany
| | - Ian B. Hickie
- The Brain and Mind Research Institute, University of Sydney, Sydney, Australia
| | - Beng-Choon Ho
- Department of Psychiatry, University of Iowa, Iowa City, IA USA
| | - David Hoehn
- Max Planck Institute of Psychiatry, Munich, Germany
| | - Pieter J. Hoekstra
- Department of Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Marisa Hollinshead
- MGH/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA USA
- Center for Brain Science, Harvard University, Cambridge, MA USA
| | - Avram J. Holmes
- MGH/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA USA
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA USA
- Center for Brain Science, Harvard University, Cambridge, MA USA
| | - Georg Homuth
- Interfaculty Institute for Genetics and Functional Genomics, University of Greifswald, Greifswald, Germany
| | - Martine Hoogman
- Department of Human Genetics, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - L. Elliot Hong
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD USA
| | - Norbert Hosten
- Department of Diagnostic Radiology and Neuroradiology, University of Greifswald, Greifswald, Germany
| | - Jouke-Jan Hottenga
- Department of Biological Psychology, VU University, Neuroscience Campus, Amsterdam, The Netherlands
| | | | - Kristy S. Hwang
- Oakland University William Beaumont School of Medicine, Rochester Hills, MI USA
| | | | - Mark Jenkinson
- Oxford Centre for Functional MRI of the Brain (FMRIB), University of Oxford, Oxford, UK
| | - Caroline Johnston
- National Institute of Health Research Biomedical Research Centre for Mental Health, South London and Maudsley National Health Service Foundation Trust, London, UK
- King’s College London, Institute of Psychiatry, London, UK
| | - Erik G. Jönsson
- Department of Clinical Neuroscience, Karolinska Institutet and Hospital, Stockholm, Sweden
| | - René S. Kahn
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Dalia Kasperaviciute
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, UK
| | - Sinead Kelly
- Neuropsychiatric Genetics Research Group, Department of Psychiatry, Institute for Molecular Medicine and Trinity College Institute for Neuroscience, Trinity College, Dublin, Ireland
| | - Sungeun Kim
- Department of Radiology and Imaging Sciences, Center for Neuroimaging, Indiana University School of Medicine, Indianapolis, IN USA
| | - Peter Kochunov
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD USA
| | - Laura Koenders
- EMGO + Institute, VU University Medical Center, Amsterdam, The Netherlands
| | - Bernd Krämer
- Center for Translational Research in Systems Neuroscience and Psychiatry, Department of Psychiatry, Georg August University, Goettingen, Germany
| | - John B. J. Kwok
- Neuroscience Research Australia, Sydney, Australia
- School of Medical Sciences, University of New South Wales, Sydney, Australia
- School of Medical Sciences, University of New South Wales, Kensington, NSW Australia
| | - Jim Lagopoulos
- The Brain and Mind Research Institute, University of Sydney, Sydney, Australia
| | - Gonzalo Laje
- Maryland Institute for Neuroscience and Development (MIND), Chevy Chase, MD USA
| | - Mikael Landen
- Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | | | - John Lauriello
- Department of Psychiatry, University of Missouri, Columbia, MO USA
| | - Stephen M. Lawrie
- Division of Psychiatry, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
| | - Phil H. Lee
- Broad Institute of Harvard and MIT, Boston, MA USA
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA USA
- Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA USA
| | - Stephanie Le Hellard
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Dr Einar Martens Research Group for Biological Psychiatry, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Herve Lemaître
- Research Unit 1000, Neuroimaging and Psychiatry, INSERM-CEA-Faculté de Médecine Paris Sud University-Paris Descartes University, Maison de Solenn Paris, SHFJ Orsay, Paris, France
| | - Cassandra D. Leonardo
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Keck School of Medicine, University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90033 USA
| | - Chiang-shan Li
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT USA
| | - Benny Liberg
- Department of Clinical Neuroscience, Karolinska Institutet and Hospital, Stockholm, Sweden
| | - David C. Liewald
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
| | - Xinmin Liu
- Mood and Anxiety Disorders Section, Human Genetics Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, US Dept of Health and Human Services, Bethesda, MD USA
- Taub Institute for Research on Alzheimer Disease and the Aging Brain, Columbia University Medical Center, New York, NY USA
| | - Lorna M. Lopez
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
- Department of Psychology, The University of Edinburgh, Edinburgh, UK
| | - Eva Loth
- MRC-SGDP Centre, Institute of Psychiatry, King’s College London, London, UK
| | | | - Michelle Luciano
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
| | - Fabio Macciardi
- Department of Psychiatry and Human Behavior, University of California, Irvine, CA USA
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | | | - Glenda M. MacQueen
- Mathison Centre for Mental Health Research and Education, Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta Canada
| | - Ulrik F. Malt
- Department of Psychosomatic Medicine, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - René Mandl
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Dara S. Manoach
- MGH/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA USA
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA USA
| | - Jean-Luc Martinot
- Research Unit 1000, Neuroimaging and Psychiatry, INSERM-CEA-Faculté de Médecine Paris Sud University-Paris Descartes University, Maison de Solenn Paris, SHFJ Orsay, Paris, France
| | - Mar Matarin
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, UK
| | - Karen A. Mather
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales Australia
| | - Manuel Mattheisen
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Department of Genomic Mathematics, University of Bonn, Bonn, Germany
| | - Morten Mattingsdal
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Research Unit, Sorlandet Hospital HF, Kristiansand, Norway
| | - Andreas Meyer-Lindenberg
- Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Colm McDonald
- Clinical Neuroimaging Laboratory, National University of Ireland Galway, University Road, Galway, Ireland
| | - Andrew M. McIntosh
- Division of Psychiatry, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
| | - Francis J. McMahon
- Mood and Anxiety Disorders Section, Human Genetics Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, US Dept of Health and Human Services, Bethesda, MD USA
| | - Katie L. McMahon
- Centre for Advanced Imaging, University of Queensland, Brisbane, Australia
| | | | - Ingrid Melle
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Yuri Milaneschi
- EMGO + Institute, VU University Medical Center, Amsterdam, The Netherlands
- Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, Baltimore, MD USA
| | - Sebastian Mohnke
- Department of Psychiatry and Psychotherapy, Charité, Universitaetsmedizin Berlin, Charitè Campus Mitte, Berlin, Germany
| | - Grant W. Montgomery
- Genetic Epidemiology Laboratory, Queensland Institute of Medical Research, Brisbane, Australia
| | - Derek W. Morris
- Neuropsychiatric Genetics Research Group, Department of Psychiatry, Institute for Molecular Medicine and Trinity College Institute for Neuroscience, Trinity College, Dublin, Ireland
| | - Eric K. Moses
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX USA
- Centre for Genetic Origins of Health and Disease, The University of Western Australia, Perth, Australia
| | - Bryon A. Mueller
- Department of Psychiatry, University of Minnesota Medical Center, Minneapolis, MN USA
| | - Susana Muñoz Maniega
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
- Scottish Imaging Network, A Platform for Scientific Excellence (SINAPSE) Collaboration, Scotland, UK
- Brain Research Imaging Centre, The University of Edinburgh, Edinburgh, UK
| | - Thomas W. Mühleisen
- Department of Genomics, Life and Brain Center, University of Bonn, Bonn, Germany
- Institute of Human Genetics, University of Bonn, Bonn, Germany
- Institute for Neuroscience and Medicine (INM-1), Centre Jülich, Jülich, Germany
| | - Bertram Müller-Myhsok
- Max Planck Institute of Psychiatry, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Benson Mwangi
- Department of Psychiatry and Behavioral Sciences, University of Texas Medical School, Houston, TX USA
- University of Texas Center of Excellence on Mood Disorders, Department of Psychiatry, UT Medical School, Houston, TX USA
| | - Matthias Nauck
- Institute of Clinical Chemistry and Laboratory Medicine, University of Greifswald, Greifswald, Germany
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, Center for Neuroimaging, Indiana University School of Medicine, Indianapolis, IN USA
| | - Thomas E. Nichols
- Department of Statistics & Warwick Manufacturing Group, The University of Warwick, Coventry, UK
| | - Lars-Göran Nilsson
- Department of Psychology, Stockholm University, Stockholm, Sweden
- Stockholm Brain Institute, Stockholm, Sweden
| | - Allison C. Nugent
- Experimental Therapeutics and Pathophysiology Branch, National Institute of Mental Health, Bethesda, MD USA
| | - Lars Nyberg
- Umeå Center for Functional Brain Imaging (UFBI), Umeå University, Umeå, Sweden
| | - Rene L. Olvera
- Department of Psychiatry, UT Health Science Center at San Antonio, San Antonio, TX USA
| | - Jaap Oosterlaan
- Department of Clinical Neuropsychology, VU University, Amsterdam, The Netherlands
| | - Roel A. Ophoff
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
- Center for Neurobehavioral Genetics, University of California, Los Angeles, CA USA
| | - Massimo Pandolfo
- Department of Neurology, Hopital Erasme, Universite Libre de Bruxelles, 1070 Brussels, Belgium
| | | | - Martina Papmeyer
- Division of Psychiatry, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
| | - Tomas Paus
- Rotman Research Institute, University of Toronto, Toronto, ON Canada
| | - Zdenka Pausova
- The Hospital for Sick Children, University of Toronto, Toronto, ON Canada
| | - Godfrey D. Pearlson
- Department of Psychiatry and Psychotherapy, University of Greifswald, Greifswald, Germany
- Departments of Psychiatry and Neurobiology, Yale University School of Medicine, New Haven, CT USA
| | - Brenda W. Penninx
- Department of Psychiatry and Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
- EMGO + Institute, VU University Medical Center, Amsterdam, The Netherlands
| | - Charles P. Peterson
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX USA
| | - Andrea Pfennig
- Department of Psychiatry and Psychotherapy, Carl Gustav Carus University Hospital, Dresden, Germany
| | - Mary Phillips
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA USA
| | - G. Bruce Pike
- Department of Radiology, University of Calgary, Calgary, Alberta Canada
| | - Jean-Baptiste Poline
- Hellen Wills Neuroscience Institute, Brain Imaging Center, University of California at Berkeley, Berkeley, CA USA
| | - Steven G. Potkin
- Department of Psychiatry and Human Behavior, University of California, Irvine, CA USA
| | - Benno Pütz
- Max Planck Institute of Psychiatry, Munich, Germany
| | - Adaikalavan Ramasamy
- Department of Medical and Molecular Genetics, King’s College London, London, UK
- Reta Lila Weston Institute and Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK
| | - Jerod Rasmussen
- Department of Psychiatry and Human Behavior, University of California, Irvine, CA USA
| | - Marcella Rietschel
- Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Mark Rijpkema
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Shannon L. Risacher
- Department of Radiology and Imaging Sciences, Center for Neuroimaging, Indiana University School of Medicine, Indianapolis, IN USA
- Indiana Alzheimer Disease Center, Indiana University School of Medicine, Indianapolis, IN USA
| | - Joshua L. Roffman
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA USA
| | - Roberto Roiz-Santiañez
- Department of Psychiatry, Marqués de Valdecilla University Hospital, IFIMAV, School of Medicine, University of Cantabria, Santander, Spain
- Centro Investigación Biomédica en Red Salud Mental (CIBERSAM), Madrid, Spain
| | - Nina Romanczuk-Seiferth
- Department of Psychiatry and Psychotherapy, Charité, Universitaetsmedizin Berlin, Charitè Campus Mitte, Berlin, Germany
| | - Emma J. Rose
- Transdisciplinary and Translational Prevention Program, RTI International, Baltimore, MD USA
| | - Natalie A. Royle
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
- Brain Research Imaging Centre, The University of Edinburgh, Edinburgh, UK
| | - Dan Rujescu
- Department of Psychiatry, University of Halle, Halle, Germany
| | - Mina Ryten
- Department of Molecular Neuroscience, UCL Institute, London, UK
- Department of Medical and Molecular Genetics, King’s College London, London, UK
| | - Perminder S. Sachdev
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales Australia
- Neuropsychiatric Institute, Prince of Wales Hospital, Sydney, New South Wales Australia
| | - Alireza Salami
- Umeå Center for Functional Brain Imaging (UFBI), Umeå University, Umeå, Sweden
- Aging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden
| | | | - Jonathan Savitz
- Laureate Institute for Brain Research, Tulsa, OK USA
- Faculty of Community Medicine, University of Tulsa, Tulsa, OK USA
| | - Andrew J. Saykin
- Department of Radiology and Imaging Sciences, Center for Neuroimaging, Indiana University School of Medicine, Indianapolis, IN USA
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN USA
| | - Cathy Scanlon
- Clinical Neuroimaging Laboratory, National University of Ireland Galway, University Road, Galway, Ireland
| | - Lianne Schmaal
- Department of Psychiatry and Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - Hugo G. Schnack
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - S. Charles Schulz
- Department of Psychiatry, University of Minnesota Medical Center, Minneapolis, MN USA
| | - Remmelt Schür
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Larry Seidman
- Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA USA
- Department of Psychiatry, Harvard Medical School, Harvard University, Cambridge, MA USA
| | - Li Shen
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, IN USA
- Department of Radiology and Imaging Sciences, Center for Neuroimaging, Indiana University School of Medicine, Indianapolis, IN USA
| | | | - Andrew Simmons
- Department of Neuroimaging, Institute of Psychiatry, King’s College London, London, UK
- NIHR Biomedical Research Centre for Mental Health at South London and Maudsley NHS Trust and Institute of Psychiatry, King’s College London, London, UK
| | - Sanjay M. Sisodiya
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, UK
| | - Colin Smith
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, UK
| | - Jordan W. Smoller
- Broad Institute of Harvard and MIT, Boston, MA USA
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA USA
- Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA USA
| | - Jair C. Soares
- Department of Psychiatry and Behavioral Sciences, University of Texas Medical School, Houston, TX USA
| | - Scott R. Sponheim
- Department of Psychiatry, University of Minnesota Medical Center, Minneapolis, MN USA
- Minneapolis VA Health Care System, Minneapolis, MN USA
| | - Emma Sprooten
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT USA
| | - John M. Starr
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
- Alzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh, UK
| | - Vidar M. Steen
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Dr Einar Martens Research Group for Biological Psychiatry, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Stephen Strakowski
- Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati College of Medicine, Cincinnati, OH USA
| | - Lachlan Strike
- Genetic Epidemiology Laboratory, Queensland Institute of Medical Research, Brisbane, Australia
| | - Jessika Sussmann
- Division of Psychiatry, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
| | | | - Alexander Teumer
- Interfaculty Institute for Genetics and Functional Genomics, University of Greifswald, Greifswald, Germany
| | - Arthur W. Toga
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Keck School of Medicine, University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90033 USA
| | - Diana Tordesillas-Gutierrez
- Department of Psychiatry, Marqués de Valdecilla University Hospital, IFIMAV, School of Medicine, University of Cantabria, Santander, Spain
- Centro Investigación Biomédica en Red Salud Mental (CIBERSAM), Madrid, Spain
| | - Daniah Trabzuni
- Department of Molecular Neuroscience, UCL Institute, London, UK
- Department of Genetics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Sarah Trost
- Center for Translational Research in Systems Neuroscience and Psychiatry, Department of Psychiatry, Georg August University, Goettingen, Germany
| | - Jessica Turner
- The Mind Research Network, Albuquerque, NM USA
- Department of Psychology and Neuroscience Institute, Georgia State University, Atlanta, GA USA
| | | | - Nic J. van der Wee
- Department of Psychiatry and Leiden Institute for Brain and Cognition, Leiden University Medical Center, Leiden, The Netherlands
| | - Kristel van Eijk
- Department of Psychiatry, Rudolf Magnus Institute, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Theo G. M. van Erp
- Department of Psychiatry and Human Behavior, University of California, Irvine, CA USA
| | | | - Dennis van ‘t Ent
- Department of Biological Psychology, VU University, Neuroscience Campus, Amsterdam, The Netherlands
| | - Marie-Jose van Tol
- Behavioural and Cognitive Neuroscience Neuroimaging Center, University Medical Center Groningen, Groningen, The Netherlands
| | - Maria C. Valdés Hernández
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
- Brain Research Imaging Centre, The University of Edinburgh, Edinburgh, UK
| | - Dick J. Veltman
- Department of Psychiatry and Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - Amelia Versace
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA USA
| | - Henry Völzke
- Institute for Community Medicine, University of Greifswald, Greifswald, Germany
| | - Robert Walker
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, UK
| | - Henrik Walter
- Department of Psychiatry and Psychotherapy, Charité, Universitaetsmedizin Berlin, Charitè Campus Mitte, Berlin, Germany
- Berlin School of Mind and Brain, Humboldt University Berlin, Berlin, Germany
| | - Lei Wang
- Departments of Psychiatry and Behavioral Sciences and Radiology, Northwestern University, Chicago, IL USA
| | - Joanna M. Wardlaw
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
- Scottish Imaging Network, A Platform for Scientific Excellence (SINAPSE) Collaboration, Scotland, UK
- Brain Research Imaging Centre, The University of Edinburgh, Edinburgh, UK
| | - Michael E. Weale
- Department of Medical and Molecular Genetics, King’s College London, London, UK
| | - Michael W. Weiner
- Departments of Radiology, Medicine, Psychiatry, University of California, San Francisco, CA USA
| | - Wei Wen
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales Australia
| | - Lars T. Westlye
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Psychology, University of Oslo, Oslo, Norway
| | - Heather C. Whalley
- Division of Psychiatry, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
| | - Christopher D. Whelan
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Tonya White
- Department of Child and Adolescent Psychiatry, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Anderson M. Winkler
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT USA
- Oxford Centre for Functional MRI of the Brain (FMRIB), University of Oxford, Oxford, UK
| | - Katharina Wittfeld
- German Center for Neurodegenerative Diseases (DZNE), University of Greifswald, Greifswald, Germany
| | - Girma Woldehawariat
- Mood and Anxiety Disorders Section, Human Genetics Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, US Dept of Health and Human Services, Bethesda, MD USA
| | | | - David Zilles
- Center for Translational Research in Systems Neuroscience and Psychiatry, Department of Psychiatry, Georg August University, Goettingen, Germany
| | - Marcel P. Zwiers
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands
- Radboud University NijmegenDonders Institute for Brain, Cognition and Behavior, Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands
| | - Anbupalam Thalamuthu
- Centre for Healthy Brain Ageing, Psychiatry, University of New South Wales (UNSW), Sydney, Australia
| | - Peter R. Schofield
- Neuroscience Research Australia, Sydney, Australia
- School of Medical Sciences, University of New South Wales, Sydney, Australia
| | - Nelson B. Freimer
- Department of Psychiatry and Biobehavioral Sciences, UCLA School of Medicine, Los Angeles, CA USA
| | | | - Wayne Drevets
- Janssen Research & Development, of Johnson & Johnson, Inc., 1125 Trenton-Harbourton Road, Titusville, NJ 08560 USA
| | - the Alzheimer’s Disease Neuroimaging Initiative, EPIGEN Consortium, IMAGEN Consortium, Saguenay Youth Study (SYS) Group
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Keck School of Medicine, University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90033 USA
- Genetic Epidemiology Laboratory, Queensland Institute of Medical Research, Brisbane, Australia
- Broad Institute of Harvard and MIT, Boston, MA USA
- Department of Human Genetics, Radboud University Medical Centre, Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France
- CNRS URA 2182 ‘Genes, synapses and cognition’, Institut Pasteur, Paris, France
- Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Université Paris Diderot, Paris, France
- Olin Neuropsychiatry Research Center, Institute of Living, Hartford Hospital, Hartford, CT USA
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT USA
- Department of Psychiatry and Psychotherapy, University of Greifswald, Greifswald, Germany
- NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin 2, Ireland
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, TX USA
- Department of Psychiatry, University of Iowa, Iowa City, IA USA
- Department of Neurology, David Geffen School of Medicine, UCLA, Los Angeles, CA USA
- Centre for Cognitive Ageing and Cognitive Epidemiology, The University of Edinburgh, 7 George Square, Edinburgh, UK
- Scottish Imaging Network, A Platform for Scientific Excellence (SINAPSE) Collaboration, Scotland, UK
- Brain Research Imaging Centre, The University of Edinburgh, Edinburgh, UK
- Max Planck Institute of Psychiatry, Munich, Germany
- The Mind Research Network, Albuquerque, NM USA
- Department of Biological Psychology, VU University, Neuroscience Campus, Amsterdam, The Netherlands
- Department of Cognitive Neuroscience, Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behavior, Nijmegen, The Netherlands
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
- Massachusetts General Hospital, Boston, MA USA
- Karakter Child and Adolescent Psychiatry University Center, Nijmegen, The Netherlands
- N. I. Vavilov Institute of General Genetics, Russian Academy of Sciences, Gubkin str. 3, Moscow, 119991 Russia
- Department of Psychiatry, University of New Mexico, Albuquerque, NM USA
- Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM USA
- Clinical Neuroimaging Laboratory, National University of Ireland Galway, University Road, Galway, Ireland
- Center for Neurobehavioral Genetics, University of California, Los Angeles, CA USA
- The Kimel Family Translational Imaging Genetics Laboratory, The Centre for Addiction and Mental Health, Toronto, ON Canada
- Dr Einar Martens Research Group for Biological Psychiatry, Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Bergen, Norway
- Department of Genomics, Life and Brain Center, University of Bonn, Bonn, Germany
- Institute of Human Genetics, University of Bonn, Bonn, Germany
- Institute for Neuroscience and Medicine (INM-1), Centre Jülich, Jülich, Germany
- Division of Medical Genetics, Department of Biomedicine, University of Basel, Basel, Switzerland
- Department of Psychiatry, Marqués de Valdecilla University Hospital, IFIMAV, School of Medicine, University of Cantabria, Santander, Spain
- Centro Investigación Biomédica en Red Salud Mental (CIBERSAM), Madrid, Spain
- Department of Psychology, The University of Edinburgh, Edinburgh, UK
- Department of Neurology, Hopital Erasme, Universite Libre de Bruxelles, 1070 Brussels, Belgium
- School of Psychology, University of Queensland, Brisbane, QLD 4072 Australia
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
- Neuropsychiatric Genetics Research Group, Department of Psychiatry, Institute for Molecular Medicine and Trinity College Institute for Neuroscience, Trinity College, Dublin, Ireland
- MGH/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA USA
- University Hospital C.G. Carus, Department of Child and Adolescent Psychiatry, Dresden University of Technology, Dresden, Germany
- Department of Psychiatry and Psychotherapy, Charité, Universitaetsmedizin Berlin, Charitè Campus Mitte, Berlin, Germany
- Department of Psychology, University of Oslo, Oslo, Norway
- Max Planck Institute for Psycholinguistics, 6500 AH Nijmegen, The Netherlands
- Research Imaging Institute, UT Health Science Center at San Antonio, San Antonio, TX USA
- South Texas Veterans Health Care Center, San Antonio, TX USA
- Neurospin, Commissariat à l’Energie Atomique, Paris, France
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA USA
- German Center for Neurodegenerative Diseases (DZNE), University of Greifswald, Greifswald, Germany
- Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
- Center for Translational Research in Systems Neuroscience and Psychiatry, Department of Psychiatry, Georg August University, Goettingen, Germany
- Division of Psychiatry, Royal Edinburgh Hospital, University of Edinburgh, Edinburgh, UK
- Department of Molecular Neuroscience, UCL Institute, London, UK
- Department of Diagnostic Radiology and Neuroradiology, University of Greifswald, Greifswald, Germany
- Department of Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Interfaculty Institute for Genetics and Functional Genomics, University of Greifswald, Greifswald, Germany
- National Institute of Health Research Biomedical Research Centre for Mental Health, South London and Maudsley National Health Service Foundation Trust, London, UK
- King’s College London, Institute of Psychiatry, London, UK
- Department of Clinical Neuroscience, Karolinska Institutet and Hospital, Stockholm, Sweden
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, UK
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, IN USA
- Department of Radiology and Imaging Sciences, Center for Neuroimaging, Indiana University School of Medicine, Indianapolis, IN USA
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD USA
- Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA USA
- Mood and Anxiety Disorders Section, Human Genetics Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, US Dept of Health and Human Services, Bethesda, MD USA
- Taub Institute for Research on Alzheimer Disease and the Aging Brain, Columbia University Medical Center, New York, NY USA
- MRC-SGDP Centre, Institute of Psychiatry, King’s College London, London, UK
- Department of Psychiatry and Human Behavior, University of California, Irvine, CA USA
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales Medicine, Sydney, New South Wales Australia
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Department of Genomic Mathematics, University of Bonn, Bonn, Germany
- Research Unit, Sorlandet Hospital HF, Kristiansand, Norway
- Centre for Advanced Imaging, University of Queensland, Brisbane, Australia
- Ludwig-Maximilians-University (LMU), Munich, Germany
- Department of Psychiatry and Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
- Centre for Genetic Origins of Health and Disease, The University of Western Australia, Perth, Australia
- Department of Psychiatry, University of Minnesota Medical Center, Minneapolis, MN USA
- Department of Psychology, Stockholm University, Stockholm, Sweden
- Umeå Center for Functional Brain Imaging (UFBI), Umeå University, Umeå, Sweden
- Department of Psychiatry, UT Health Science Center at San Antonio, San Antonio, TX USA
- Rotman Research Institute, University of Toronto, Toronto, ON Canada
- The Hospital for Sick Children, University of Toronto, Toronto, ON Canada
- Department of Psychiatry and Leiden Institute for Brain and Cognition, Leiden University Medical Center, Leiden, The Netherlands
- Department of Medical and Molecular Genetics, King’s College London, London, UK
- Neuropsychiatric Institute, Prince of Wales Hospital, Sydney, New South Wales Australia
- Laureate Institute for Brain Research, Tulsa, OK USA
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN USA
- Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA USA
- Department of Neuroimaging, Institute of Psychiatry, King’s College London, London, UK
- NIHR Biomedical Research Centre for Mental Health at South London and Maudsley NHS Trust and Institute of Psychiatry, King’s College London, London, UK
- Minneapolis VA Health Care System, Minneapolis, MN USA
- Behavioural and Cognitive Neuroscience Neuroimaging Center, University Medical Center Groningen, Groningen, The Netherlands
- Institute for Community Medicine, University of Greifswald, Greifswald, Germany
- Departments of Radiology, Medicine, Psychiatry, University of California, San Francisco, CA USA
- Department of Child and Adolescent Psychiatry, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Radboud University NijmegenDonders Institute for Brain, Cognition and Behavior, Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands
- Oxford Centre for Functional MRI of the Brain (FMRIB), University of Oxford, Oxford, UK
- Neuroscience Research Australia, Sydney, Australia
- School of Medical Sciences, University of New South Wales, Sydney, Australia
- Center for Brain Science, Harvard University, Cambridge, MA USA
- The Brain and Mind Research Institute, University of Sydney, Sydney, Australia
- Alzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh, UK
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, UK
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, UK
- Department Early Psychosis, Academic Psychiatric Centre, AMC, UvA, Amsterdam, Netherlands
- EMGO + Institute, VU University Medical Center, Amsterdam, The Netherlands
- Cognitive Science Department, UC San Diego, La Jolla, CA USA
- Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway
- Department of Clinical Neuropsychology, VU University, Amsterdam, The Netherlands
- Reta Lila Weston Institute and Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK
- Department of Neurology and NeuroSurgery, McGill University, Montreal, Quebec Canada
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA USA
- Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia Canada
- Department of Psychiatry, University of Oxford, Oxford, UK
- Department of Psychiatry and Behavioral Sciences, University of Texas Medical School, Houston, TX USA
- University of Texas Center of Excellence on Mood Disorders, Department of Psychiatry, UT Medical School, Houston, TX USA
- Department of Psychiatry and Biobehavioral Sciences and the Center for Neurobehavioral Genetics, The Semel Institute for Neuroscience and Human Behavior, UCLA, Los Angeles, CA USA
- Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, Baltimore, MD USA
- Berlin School of Mind and Brain, Humboldt University Berlin, Berlin, Germany
- Department of Psychiatry and Psychotherapy, Carl Gustav Carus University Hospital, Dresden, Germany
- Department of Psychiatry and Psychotherapy, Helios Hospital Stralsund, Stralsund, Germany
- Department of Psychiatry, Harvard Medical School, Harvard University, Cambridge, MA USA
- Department of Psychiatry, Brown University, Providence, RI USA
- Psychosis Research Unit, Mount Sinai School of Medicine, New York, NY USA
- Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati College of Medicine, Cincinnati, OH USA
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA USA
- Philadelphia Veterans Administration Medical Center, Philadelphia, PA USA
- Department of Psychiatry and Psychotherapy, University Regensburg, Regensburg, Germany
- Department of Psychiatry and Psychotherapy, Trinity College, University Dublin, Dublin, Germany
- Stockholm Brain Institute, Stockholm, Sweden
- Department of Psychology and Neuroscience Institute, Georgia State University, Atlanta, GA USA
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON Canada
- Department of Psychology, University of New Mexico, Albuquerque, NM USA
- Department of Psychosomatic Medicine, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Indiana Alzheimer Disease Center, Indiana University School of Medicine, Indianapolis, IN USA
- Department of Radiology, University of Calgary, Calgary, Alberta Canada
- Department of Statistics & Warwick Manufacturing Group, The University of Warwick, Coventry, UK
- Departments of Psychiatry and Behavioral Sciences and Radiology, Northwestern University, Chicago, IL USA
- Electrical Engineering, Vanderbilt University, Nashville, TN USA
- Experimental Therapeutics and Pathophysiology Branch, National Institute of Mental Health, Bethesda, MD USA
- Institute of Clinical Chemistry and Laboratory Medicine, University of Greifswald, Greifswald, Germany
- Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON Canada
- Faculty of Community Medicine, University of Tulsa, Tulsa, OK USA
- Maryland Institute for Neuroscience and Development (MIND), Chevy Chase, MD USA
- Mathison Centre for Mental Health Research and Education, Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta Canada
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
- MRC Centre for Neuropsychiatric Genetics and Genomics, Institute of Psychological Medicine and Clinical Neurosciences, Cardiff University, Cardiff, UK
- Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, UK
- School of Medical Sciences, University of New South Wales, Kensington, NSW Australia
- Oakland University William Beaumont School of Medicine, Rochester Hills, MI USA
- CHU Sainte Justine University Hospital Research Center, Montreal, QC Canada
- Addictions Department, King’s Health Partners, King’s College London, London, UK
- South Texas Veterans Health Care System, San Antonio, TX USA
- Research Unit 1000, Neuroimaging and Psychiatry, INSERM-CEA-Faculté de Médecine Paris Sud University-Paris Descartes University, Maison de Solenn Paris, SHFJ Orsay, Paris, France
- Department of Genetics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
- Department of Psychiatry, Rudolf Magnus Institute, University Medical Center Utrecht, Utrecht, The Netherlands
- School of Mathematics and Statistics, University of Sydney, Sydney, Australia
- School of Medicine, University of Nottingham, Nottingham, UK
- Department of Psychiatry, Stanford University School of Medicine, Stanford, CA USA
- Aging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden
- Hellen Wills Neuroscience Institute, Brain Imaging Center, University of California at Berkeley, Berkeley, CA USA
- Department of Psychiatry, University of Missouri, Columbia, MO USA
- Departments of Psychiatry and Neurobiology, Yale University School of Medicine, New Haven, CT USA
- Mayo Clinic, Rochester, MN USA
- Transdisciplinary and Translational Prevention Program, RTI International, Baltimore, MD USA
- Department of Psychiatry and Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY USA
- Department of Psychiatry, University of Halle, Halle, Germany
- Advanced Biomedical Informatics Group, llc., Iowa City, IA USA
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095 Netherlands
- QIMR Berghofer Medical Research Institute, Quantitative Genetics, Brisbane, Australia
- QIMR Berghofer Medical Research Institute, Genetic Epidemiology, Brisbane, Australia
- QIMR Berghofer Medical Research Institute, Neuroimaging Genetics, Brisbane, Australia
- Department of Psychology, UCLA, Los Angeles, CA USA
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
- Dr. E. Martens Research Group for Biological Psychiatry, Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Bergen, Norway
- Department of Psychiatry, UHC University of Vermont, Bergen, VT USA
- Centre for Healthy Brain Ageing, Psychiatry, University of New South Wales (UNSW), Sydney, Australia
- Department of Psychiatry and Biobehavioral Sciences, UCLA School of Medicine, Los Angeles, CA USA
- School of Psychology, University of Exeter, Exeter, UK
- Janssen Research & Development, of Johnson & Johnson, Inc., 1125 Trenton-Harbourton Road, Titusville, NJ 08560 USA
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Kim EY, Magnotta VA, Liu D, Johnson HJ. Stable Atlas-based Mapped Prior (STAMP) machine-learning segmentation for multicenter large-scale MRI data. Magn Reson Imaging 2014; 32:832-44. [PMID: 24818817 DOI: 10.1016/j.mri.2014.04.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 03/12/2014] [Accepted: 04/15/2014] [Indexed: 01/15/2023]
Abstract
Machine learning (ML)-based segmentation methods are a common technique in the medical image processing field. In spite of numerous research groups that have investigated ML-based segmentation frameworks, there remains unanswered aspects of performance variability for the choice of two key components: ML algorithm and intensity normalization. This investigation reveals that the choice of those elements plays a major part in determining segmentation accuracy and generalizability. The approach we have used in this study aims to evaluate relative benefits of the two elements within a subcortical MRI segmentation framework. Experiments were conducted to contrast eight machine-learning algorithm configurations and 11 normalization strategies for our brain MR segmentation framework. For the intensity normalization, a Stable Atlas-based Mapped Prior (STAMP) was utilized to take better account of contrast along boundaries of structures. Comparing eight machine learning algorithms on down-sampled segmentation MR data, it was obvious that a significant improvement was obtained using ensemble-based ML algorithms (i.e., random forest) or ANN algorithms. Further investigation between these two algorithms also revealed that the random forest results provided exceptionally good agreement with manual delineations by experts. Additional experiments showed that the effect of STAMP-based intensity normalization also improved the robustness of segmentation for multicenter data sets. The constructed framework obtained good multicenter reliability and was successfully applied on a large multicenter MR data set (n>3000). Less than 10% of automated segmentations were recommended for minimal expert intervention. These results demonstrate the feasibility of using the ML-based segmentation tools for processing large amount of multicenter MR images. We demonstrated dramatically different result profiles in segmentation accuracy according to the choice of ML algorithm and intensity normalization chosen.
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Affiliation(s)
- Eun Young Kim
- Department of Biomedical Engineering, University of Iowa, Iowa, IA 52242, USA.
| | - Vincent A Magnotta
- Department of Biomedical Engineering, University of Iowa, Iowa, IA 52242, USA; Department of Radiology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA
| | - Dawei Liu
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA
| | - Hans J Johnson
- Department of Biomedical Engineering, University of Iowa, Iowa, IA 52242, USA; Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA
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Cole JH, Farmer RE, Rees EM, Johnson HJ, Frost C, Scahill RI, Hobbs NZ. Test-Retest Reliability of Diffusion Tensor Imaging in Huntington's Disease. PLOS CURRENTS 2014; 6. [PMID: 24672743 PMCID: PMC3962450 DOI: 10.1371/currents.hd.f19ef63fff962f5cd9c0e88f4844f43b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Diffusion tensor imaging (DTI) has shown microstructural abnormalities in patients with Huntington's Disease (HD) and work is underway to characterise how these abnormalities change with disease progression. Using methods that will be applied in longitudinal research, we sought to establish the reliability of DTI in early HD patients and controls. Test-retest reliability, quantified using the intraclass correlation coefficient (ICC), was assessed using region-of-interest (ROI)-based white matter atlas and voxelwise approaches on repeat scan data from 22 participants (10 early HD, 12 controls). T1 data was used to generate further ROIs for analysis in a reduced sample of 18 participants. The results suggest that fractional anisotropy (FA) and other diffusivity metrics are generally highly reliable, with ICCs indicating considerably lower within-subject compared to between-subject variability in both HD patients and controls. Where ICC was low, particularly for the diffusivity measures in the caudate and putamen, this was partly influenced by outliers. The analysis suggests that the specific DTI methods used here are appropriate for cross-sectional research in HD, and give confidence that they can also be applied longitudinally, although this requires further investigation. An important caveat for DTI studies is that test-retest reliability may not be evenly distributed throughout the brain whereby highly anisotropic white matter regions tended to show lower relative within-subject variability than other white or grey matter regions.
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Affiliation(s)
- James H Cole
- Huntington's Disease Research Group, Department of Neurodegenerative Disease, UCL Institute of Neurology, London, UK; Computational, Cognitive & Clinical Neuroimaging Laboratory, Department of Medicine, Imperial College London, UK
| | - Ruth E Farmer
- Department of Medical Statistics, London School of Hygiene and Tropical Medicine, London, UK
| | - Elin M Rees
- Huntington's Disease Research Group, Department of Neurodegenerative Disease, UCL Institute of Neurology, London, UK
| | - Hans J Johnson
- Department of Psychiatry, University of Iowa, Iowa City, Iowa, USA
| | - Chris Frost
- Department of Medical Statistics, London School of Hygiene and Tropical Medicine, London, UK
| | - Rachael I Scahill
- Huntington's Disease Research Group, Department of Neurodegenerative Disease, UCL Institute of Neurology, London, UK
| | - Nicola Z Hobbs
- Huntington's Disease Research Group, Department of Neurodegenerative Disease, UCL Institute of Neurology, London, UK
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Chollet MB, Aldridge K, Pangborn N, Weinberg SM, DeLeon VB. Landmarking the brain for geometric morphometric analysis: an error study. PLoS One 2014; 9:e86005. [PMID: 24489689 PMCID: PMC3904856 DOI: 10.1371/journal.pone.0086005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Accepted: 12/03/2013] [Indexed: 12/21/2022] Open
Abstract
Neuroanatomic phenotypes are often assessed using volumetric analysis. Although powerful and versatile, this approach is limited in that it is unable to quantify changes in shape, to describe how regions are interrelated, or to determine whether changes in size are global or local. Statistical shape analysis using coordinate data from biologically relevant landmarks is the preferred method for testing these aspects of phenotype. To date, approximately fifty landmarks have been used to study brain shape. Of the studies that have used landmark-based statistical shape analysis of the brain, most have not published protocols for landmark identification or the results of reliability studies on these landmarks. The primary aims of this study were two-fold: (1) to collaboratively develop detailed data collection protocols for a set of brain landmarks, and (2) to complete an intra- and inter-observer validation study of the set of landmarks. Detailed protocols were developed for 29 cortical and subcortical landmarks using a sample of 10 boys aged 12 years old. Average intra-observer error for the final set of landmarks was 1.9 mm with a range of 0.72 mm-5.6 mm. Average inter-observer error was 1.1 mm with a range of 0.40 mm-3.4 mm. This study successfully establishes landmark protocols with a minimal level of error that can be used by other researchers in the assessment of neuroanatomic phenotypes.
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Affiliation(s)
- Madeleine B. Chollet
- Center for Functional Anatomy and Evolution, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- * E-mail:
| | - Kristina Aldridge
- Department of Pathology and Anatomical Sciences, University of Missouri School of Medicine, Columbia, Missouri, United States of America
| | - Nicole Pangborn
- Center for Functional Anatomy and Evolution, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Seth M. Weinberg
- Center for Craniofacial and Dental Genetics, University of Pittsburgh School of Dental Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Valerie B. DeLeon
- Center for Functional Anatomy and Evolution, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
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Harrington DL, Liu D, Smith MM, Mills JA, Long JD, Aylward EH, Paulsen JS. Neuroanatomical correlates of cognitive functioning in prodromal Huntington disease. Brain Behav 2014; 4:29-40. [PMID: 24653952 PMCID: PMC3937704 DOI: 10.1002/brb3.185] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 09/10/2013] [Accepted: 09/13/2013] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION The brain mechanisms of cognitive impairment in prodromal Huntington disease (prHD) are not well understood. Although striatal atrophy correlates with some cognitive abilities, few studies of prHD have investigated whether cortical gray matter morphometry correlates in a regionally specific manner with functioning in different cognitive domains. This knowledge would inform the selection of cognitive measures for clinical trials that would be most sensitive to the target of a treatment intervention. METHOD In this study, random forest analysis was used to identify neuroanatomical correlates of functioning in five cognitive domains including attention and information processing speed, working memory, verbal learning and memory, negative emotion recognition, and temporal processing. Participants included 325 prHD individuals with varying levels of disease progression and 119 gene-negative controls with a family history of HD. In intermediate analyses, we identified brain regions that showed significant differences between the prHD and the control groups in cortical thickness and striatal volume. Brain morphometry in these regions was then correlated with cognitive functioning in each of the domains in the prHD group using random forest methods. We hypothesized that different regional patterns of brain morphometry would be associated with performances in distinct cognitive domains. RESULTS The results showed that performances in different cognitive domains that are vulnerable to decline in prHD were correlated with regionally specific patterns of cortical and striatal morphometry. Putamen and/or caudate volumes were top-ranked correlates of performance across all cognitive domains, as was cortical thickness in regions related to the processing demands of each domain. CONCLUSIONS The results underscore the importance of identifying structural magnetic resonance imaging (sMRI) markers of functioning in different cognitive domains, as their relative sensitivity depends on the extent to which processing is called upon by different brain networks. The findings have implications for identifying neuroimaging and cognitive outcome measures for use in clinical trials.
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Affiliation(s)
- Deborah L Harrington
- Department of Radiology, University of California San Diego, California ; Research Service, VA San Diego Healthcare System San Diego, California
| | - Dawei Liu
- Department of Psychiatry, University of Iowa Carver College of Medicine Iowa City, Iowa
| | - Megan M Smith
- Department of Psychiatry, University of Iowa Carver College of Medicine Iowa City, Iowa
| | - James A Mills
- Department of Psychiatry, University of Iowa Carver College of Medicine Iowa City, Iowa
| | - Jeffrey D Long
- Department of Psychiatry, University of Iowa Carver College of Medicine Iowa City, Iowa
| | | | - Jane S Paulsen
- Department of Psychiatry, University of Iowa Carver College of Medicine Iowa City, Iowa ; Department of Neurology, University of Iowa Carver College of Medicine Iowa City, Iowa
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50
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Russell MJ, Goodman T, Pierson R, Shepherd S, Wang Q, Groshong B, Wiley DF. Individual differences in transcranial electrical stimulation current density. J Biomed Res 2013; 27:495-508. [PMID: 24285948 PMCID: PMC3841475 DOI: 10.7555/jbr.27.20130074] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 07/16/2013] [Accepted: 07/28/2013] [Indexed: 12/23/2022] Open
Abstract
Transcranial electrical stimulation (TCES) is effective in treating many conditions, but it has not been possible to accurately forecast current density within the complex anatomy of a given subject's head. We sought to predict and verify TCES current densities and determine the variability of these current distributions in patient-specific models based on magnetic resonance imaging (MRI) data. Two experiments were performed. The first experiment estimated conductivity from MRIs and compared the current density results against actual measurements from the scalp surface of 3 subjects. In the second experiment, virtual electrodes were placed on the scalps of 18 subjects to model simulated current densities with 2 mA of virtually applied stimulation. This procedure was repeated for 4 electrode locations. Current densities were then calculated for 75 brain regions. Comparison of modeled and measured external current in experiment 1 yielded a correlation of r = .93. In experiment 2, modeled individual differences were greatest near the electrodes (ten-fold differences were common), but simulated current was found in all regions of the brain. Sites that were distant from the electrodes (e.g. hypothalamus) typically showed two-fold individual differences. MRI-based modeling can effectively predict current densities in individual brains. Significant variation occurs between subjects with the same applied electrode configuration. Individualized MRI-based modeling should be considered in place of the 10-20 system when accurate TCES is needed.
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