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Rosso AL, Verghese J, Metti AL, Boudreau RM, Aizenstein HJ, Kritchevsky S, Harris T, Yaffe K, Satterfield S, Studenski S, Rosano C. Slowing gait and risk for cognitive impairment: The hippocampus as a shared neural substrate. Neurology 2017; 89:336-342. [PMID: 28659421 DOI: 10.1212/wnl.0000000000004153] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 04/24/2017] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE To identify the shared neuroimaging signature of gait slowing and cognitive impairment. METHODS We assessed a cohort of older adults (n = 175, mean age 73 years, 57% female, 65% white) with repeated measures of gait speed over 14 years, MRI for gray matter volume (GMV) at year 10 or 11, and adjudicated cognitive status at year 14. Gait slowing was calculated by bayesian slopes corrected for intercepts, with higher values indicating faster decline. GMV was normalized to intracranial volume, with lower values indicating greater atrophy for 10 regions of interest (hippocampus, anterior and posterior cingulate, primary and supplementary motor cortices, posterior parietal lobe, middle frontal lobe, caudate, putamen, pallidum). Nonparametric correlations adjusted for demographics, comorbidities, muscle strength, and knee pain assessed associations of time to walk with GMV. Logistic regression models calculated odds ratios (ORs) of gait slowing with dementia or mild cognitive impairment with and without adjustment for GMV. RESULTS Gait slowing was associated with cognitive impairment at year 14 (OR per 0.1 s/y slowing 1.47; 95% confidence interval 1.04-2.07). The right hippocampus was the only region that was related to both gait slowing (ρ = -0.16, p = 0.03) and cognitive impairment (OR 0.17, p = 0.009). Adjustment for right hippocampal volume attenuated the association of gait slowing with cognitive impairment by 23%. CONCLUSIONS The association between gait slowing and cognitive impairment is supported by a shared neural substrate that includes a smaller right hippocampus. This finding underscores the value of long-term gait slowing as an early indicator of dementia risk.
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Affiliation(s)
- Andrea L Rosso
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD.
| | - Joe Verghese
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD
| | - Andrea L Metti
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD
| | - Robert M Boudreau
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD
| | - Howard J Aizenstein
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD
| | - Stephen Kritchevsky
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD
| | - Tamara Harris
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD
| | - Kristine Yaffe
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD
| | - Suzanne Satterfield
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD
| | - Stephanie Studenski
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD
| | - Caterina Rosano
- From the Department of Epidemiology (A.L.R., A.L.M., R.M.B., C.R.), School of Public Health, and Departments of Psychiatry and Bioengineering (H.J.A.), University of Pittsburgh, PA; Department of Neurology and Medicine (J.V.), Albert Einstein College of Medicine, Bronx, NY; Sticht Center for Healthy Aging and Alzheimer's Prevention (S.B.K.), Wake Forest School of Medicine, Winston-Salem, NC; Laboratory of Epidemiology and Population Sciences (T.B.H.), IRP, National Institute on Aging, NIH, Bethesda, MD; Departments of Psychiatry, Neurology, and Epidemiology (K.Y.), University of California, San Francisco; Department of Preventive Medicine (S. Satterfield), University of Tennessee Health Science Center, Memphis; and Longitudinal Studies Section (S. Studenski), National Institute on Aging, Baltimore, MD
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102
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Méndez-Gómez JL, Rougier MB, Tellouck L, Korobelnik JF, Schweitzer C, Delyfer MN, Amieva H, Dartigues JF, Delcourt C, Helmer C. Peripapillary Retinal Nerve Fiber Layer Thickness and the Evolution of Cognitive Performance in an Elderly Population. Front Neurol 2017; 8:93. [PMID: 28373855 PMCID: PMC5358525 DOI: 10.3389/fneur.2017.00093] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 02/27/2017] [Indexed: 11/19/2022] Open
Abstract
Retinal nerve fiber layer (RNFL) thickness is reduced in Alzheimer’s patients. However, whether it is associated with early evolution of cognitive function is unknown. Within 427 participants from the Three-City-Alienor longitudinal population-based cohort, we explored the relationship between peripapillary RNFL thicknesses and the evolution of cognitive performance. RNFL was assessed at baseline by spectral domain optical coherence tomography; cognitive performances were assessed at baseline and at 2 years, with the Mini–Mental State Examination, the Isaacs’ set test, and the Free and Cued Selective Reminding Test (FCSRT). Multivariate linear mixed models were performed. The RNFL was not associated with initial cognitive performance. Nevertheless, a thicker RNFL was significantly associated with a better cognitive evolution over time in the free delayed recall (p = 0.0037) and free + cued delayed recall (p = 0.0043) scores of the FCSRT, particularly in the temporal, superotemporal, and inferotemporal segments. No associations were found with other cognitive tests. The RNFL was associated with changes in scores that assess episodic memory. RNFL thickness could reflect a higher risk of developing cognitive impairment over time.
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Affiliation(s)
- Juan Luis Méndez-Gómez
- University Bordeaux, INSERM, Bordeaux Population Health Research Center, Team LEHA, UMR 1219 , Bordeaux , France
| | - Marie-Bénédicte Rougier
- University Bordeaux, INSERM, Bordeaux Population Health Research Center, Team LEHA, UMR 1219, Bordeaux, France; University Hospital, Ophthalmology, Bordeaux, France
| | - Laury Tellouck
- University Bordeaux, INSERM, Bordeaux Population Health Research Center, Team LEHA, UMR 1219, Bordeaux, France; University Hospital, Ophthalmology, Bordeaux, France
| | - Jean-François Korobelnik
- University Bordeaux, INSERM, Bordeaux Population Health Research Center, Team LEHA, UMR 1219, Bordeaux, France; University Hospital, Ophthalmology, Bordeaux, France
| | - Cédric Schweitzer
- University Bordeaux, INSERM, Bordeaux Population Health Research Center, Team LEHA, UMR 1219, Bordeaux, France; University Hospital, Ophthalmology, Bordeaux, France
| | - Marie-Noëlle Delyfer
- University Bordeaux, INSERM, Bordeaux Population Health Research Center, Team LEHA, UMR 1219, Bordeaux, France; University Hospital, Ophthalmology, Bordeaux, France
| | - Hélène Amieva
- University Bordeaux, INSERM, Bordeaux Population Health Research Center, Team LEHA, UMR 1219 , Bordeaux , France
| | - Jean-François Dartigues
- University Bordeaux, INSERM, Bordeaux Population Health Research Center, Team LEHA, UMR 1219, Bordeaux, France; University Hospital, Memory Consultation, CMRR, Bordeaux, France
| | - Cécile Delcourt
- University Bordeaux, INSERM, Bordeaux Population Health Research Center, Team LEHA, UMR 1219 , Bordeaux , France
| | - Catherine Helmer
- University Bordeaux, INSERM, Bordeaux Population Health Research Center, Team LEHA, UMR 1219 , Bordeaux , France
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103
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Miller-Thomas MM, Sipe AL, Benzinger TLS, McConathy J, Connolly S, Schwetye KE. Multimodality Review of Amyloid-related Diseases of the Central Nervous System. Radiographics 2017; 36:1147-63. [PMID: 27399239 DOI: 10.1148/rg.2016150172] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Amyloid-β (Aβ) is ubiquitous in the central nervous system (CNS), but pathologic accumulation of Aβ results in four distinct neurologic disorders that affect middle-aged and elderly adults, with diverse clinical presentations ranging from chronic debilitating dementia to acute life-threatening intracranial hemorrhage. The characteristic imaging patterns of Aβ-related CNS diseases reflect the pathophysiology of Aβ deposition in the CNS. Aβ is recognized as a key component in the neuronal damage that characterizes the pathophysiology of Alzheimer disease, the most common form of dementia. Targeted molecular imaging shows pathologic accumulation of Aβ and tau protein, and fluorine 18 fluorodeoxyglucose positron emission tomography and anatomic imaging allow differentiation of typical patterns of neuronal dysfunction and loss in patients with Alzheimer disease from those seen in patients with other types of dementia. Cerebral amyloid angiopathy (CAA) is an important cause of cognitive impairment and spontaneous intracerebral hemorrhage in the elderly. Hemorrhage and white matter injury seen at imaging reflect vascular damage caused by the accumulation of Aβ in vessel walls. The rare forms of inflammatory angiopathy attributed to Aβ, Aβ-related angiitis and CAA-related inflammation, cause debilitating neurologic symptoms that improve with corticosteroid therapy. Imaging shows marked subcortical and cortical inflammation due to perivascular inflammation, which is incited by vascular Aβ accumulation. In the rarest of the four disorders, cerebral amyloidoma, the macroscopic accumulation of Aβ mimics the imaging appearance of tumors. Knowledge of the imaging patterns and pathophysiology is essential for accurate diagnosis of Aβ-related diseases of the CNS. (©)RSNA, 2016.
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Affiliation(s)
- Michelle M Miller-Thomas
- From the Mallinckrodt Institute of Radiology (M.M.M.T., A.L.S., T.L.S.B., J.M., S.C.) and Department of Pathology and Immunology (K.E.S.), Washington University School of Medicine, 510 S Kingshighway Blvd, Campus Box 8131, St Louis, MO 63110
| | - Adam L Sipe
- From the Mallinckrodt Institute of Radiology (M.M.M.T., A.L.S., T.L.S.B., J.M., S.C.) and Department of Pathology and Immunology (K.E.S.), Washington University School of Medicine, 510 S Kingshighway Blvd, Campus Box 8131, St Louis, MO 63110
| | - Tammie L S Benzinger
- From the Mallinckrodt Institute of Radiology (M.M.M.T., A.L.S., T.L.S.B., J.M., S.C.) and Department of Pathology and Immunology (K.E.S.), Washington University School of Medicine, 510 S Kingshighway Blvd, Campus Box 8131, St Louis, MO 63110
| | - Jonathan McConathy
- From the Mallinckrodt Institute of Radiology (M.M.M.T., A.L.S., T.L.S.B., J.M., S.C.) and Department of Pathology and Immunology (K.E.S.), Washington University School of Medicine, 510 S Kingshighway Blvd, Campus Box 8131, St Louis, MO 63110
| | - Sarah Connolly
- From the Mallinckrodt Institute of Radiology (M.M.M.T., A.L.S., T.L.S.B., J.M., S.C.) and Department of Pathology and Immunology (K.E.S.), Washington University School of Medicine, 510 S Kingshighway Blvd, Campus Box 8131, St Louis, MO 63110
| | - Katherine E Schwetye
- From the Mallinckrodt Institute of Radiology (M.M.M.T., A.L.S., T.L.S.B., J.M., S.C.) and Department of Pathology and Immunology (K.E.S.), Washington University School of Medicine, 510 S Kingshighway Blvd, Campus Box 8131, St Louis, MO 63110
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104
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Papma JM, Smits M, de Groot M, Mattace Raso FU, van der Lugt A, Vrooman HA, Niessen WJ, Koudstaal PJ, van Swieten JC, van der Veen FM, Prins ND. The effect of hippocampal function, volume and connectivity on posterior cingulate cortex functioning during episodic memory fMRI in mild cognitive impairment. Eur Radiol 2017; 27:3716-3724. [PMID: 28289940 PMCID: PMC5544779 DOI: 10.1007/s00330-017-4768-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 01/10/2017] [Accepted: 02/01/2017] [Indexed: 11/30/2022]
Abstract
Objectives Diminished function of the posterior cingulate cortex (PCC) is a typical finding in early Alzheimer’s disease (AD). It is hypothesized that in early stage AD, PCC functioning relates to or reflects hippocampal dysfunction or atrophy. The aim of this study was to examine the relationship between hippocampus function, volume and structural connectivity, and PCC activation during an episodic memory task-related fMRI study in mild cognitive impairment (MCI). Method MCI patients (n = 27) underwent episodic memory task-related fMRI, 3D-T1w MRI, 2D T2-FLAIR MRI and diffusion tensor imaging. Stepwise linear regression analysis was performed to examine the relationship between PCC activation and hippocampal activation, hippocampal volume and diffusion measures within the cingulum along the hippocampus. Results We found a significant relationship between PCC and hippocampus activation during successful episodic memory encoding and correct recognition in MCI patients. We found no relationship between the PCC and structural hippocampal predictors. Conclusions Our results indicate a relationship between PCC and hippocampus activation during episodic memory engagement in MCI. This may suggest that during episodic memory, functional network deterioration is the most important predictor of PCC functioning in MCI. Key Points • PCC functioning during episodic memory relates to hippocampal functioning in MCI. • PCC functioning during episodic memory does not relate to hippocampal structure in MCI. • Functional network changes are an important predictor of PCC functioning in MCI. Electronic supplementary material The online version of this article (doi:10.1007/s00330-017-4768-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Janne M Papma
- Department of Neurology, Erasmus MC - University Medical Center Rotterdam, 's-Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands.
| | - Marion Smits
- Department of Radiology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Marius de Groot
- Department of Radiology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Medical Informatics, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Francesco U Mattace Raso
- Department of Geriatrics, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Aad van der Lugt
- Department of Radiology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Henri A Vrooman
- Department of Radiology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Medical Informatics, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Wiro J Niessen
- Department of Radiology, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Medical Informatics, Erasmus MC - University Medical Center Rotterdam, Rotterdam, The Netherlands.,Faculty of Applied Sciences, Delft University of Technology, Delft, The Netherlands
| | - Peter J Koudstaal
- Department of Neurology, Erasmus MC - University Medical Center Rotterdam, 's-Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands
| | - John C van Swieten
- Department of Neurology, Erasmus MC - University Medical Center Rotterdam, 's-Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands
| | | | - Niels D Prins
- Alzheimer Center, Department of Neurology, VU University Medical Center, Neuroscience Campus, Amsterdam, The Netherlands
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105
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Załęska-Kocięcka M, Jezierski P, Grabowski M, Kuśmierski K, Dąbrowski M, Piotrowska K, Banaszewski M, Imiela J, Stępińska J. Role of β2-microglobulin in postoperative cognitive decline. Biomark Med 2017; 11:245-253. [DOI: 10.2217/bmm-2016-0274] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Aim: β2-microglobulin (β2M) was proved to affect hippocampal functions in mice. Materials & methods: Seventy-one patients undergoing aortic valve replacement were analyzed in prospective observational study. Kidney biomarkers and Mini Mental State Examinations (MMSEs) were performed before procedure, at discharge and after 6 months. Results: Patients with β2M increase over the median change (>0.42 mg/l) experienced a significant in-hospital drop in MMSE (p = 0.005). Patients with β2M increase over the median change also failed to improve a delayed-word-recall domain of the test (p = 0.826) while patients with a lower increase improved results in the domain (p = 0.004). After 6 months, MMSE improvement was associated with a significant decrease in β2M (p = 0.042). Conclusion: These are the first in man data demonstrating relation between changes in cognition and β2M. The phenomenon was reversible which indicates its therapeutic potential.
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Affiliation(s)
| | - Paweł Jezierski
- Neurology Clinic, Institute of Psychiatry & Neurology, Warsaw, Poland
| | - Maciej Grabowski
- Acquired Valve Disease Clinic, Institute of Cardiology, Warsaw, Poland
| | - Krzysztof Kuśmierski
- Cardiac Surgery & Transplantology Clinic, Institute of Cardiology, Warsaw, Poland
| | - Maciej Dąbrowski
- Interventional Cardiology & Angiology Clinic, Institute of Cardiology, Warsaw, Poland
| | - Katarzyna Piotrowska
- Department of Quantitative Methods & Information Technology, Kozminski University, Warsaw, Poland
| | - Marek Banaszewski
- Cardiac Intensive Therapy Clinic, Institute of Cardiology, Warsaw, Poland
| | - Jacek Imiela
- Department of Internal Medicine & Nephrology, Miedzyleski Hospital, Warsaw, Poland
| | - Janina Stępińska
- Cardiac Intensive Therapy Clinic, Institute of Cardiology, Warsaw, Poland
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106
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Wang G, Wang Y. Towards a Holistic Cortical Thickness Descriptor: Heat Kernel-Based Grey Matter Morphology Signatures. Neuroimage 2017; 147:360-380. [PMID: 28033566 PMCID: PMC5303630 DOI: 10.1016/j.neuroimage.2016.12.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/05/2016] [Accepted: 12/07/2016] [Indexed: 11/19/2022] Open
Abstract
In this paper, we propose a heat kernel based regional shape descriptor that may be capable of better exploiting volumetric morphological information than other available methods, thereby improving statistical power on brain magnetic resonance imaging (MRI) analysis. The mechanism of our analysis is driven by the graph spectrum and the heat kernel theory, to capture the volumetric geometry information in the constructed tetrahedral meshes. In order to capture profound brain grey matter shape changes, we first use the volumetric Laplace-Beltrami operator to determine the point pair correspondence between white-grey matter and CSF-grey matter boundary surfaces by computing the streamlines in a tetrahedral mesh. Secondly, we propose multi-scale grey matter morphology signatures to describe the transition probability by random walk between the point pairs, which reflects the inherent geometric characteristics. Thirdly, a point distribution model is applied to reduce the dimensionality of the grey matter morphology signatures and generate the internal structure features. With the sparse linear discriminant analysis, we select a concise morphology feature set with improved classification accuracies. In our experiments, the proposed work outperformed the cortical thickness features computed by FreeSurfer software in the classification of Alzheimer's disease and its prodromal stage, i.e., mild cognitive impairment, on publicly available data from the Alzheimer's Disease Neuroimaging Initiative. The multi-scale and physics based volumetric structure feature may bring stronger statistical power than some traditional methods for MRI-based grey matter morphology analysis.
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Affiliation(s)
- Gang Wang
- School of Information and Electrical Engineering, Ludong University, Yantai, Shandong 264025, China.
| | - Yalin Wang
- Arizona State University, School of Computing, Informatics, Decision Systems Engineering, 699 S. Mill Avenue, Tempe, AZ 85281, United States.
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107
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Bartel F, Vrenken H, Bijma F, Barkhof F, van Herk M, de Munck JC. Regional analysis of volumes and reproducibilities of automatic and manual hippocampal segmentations. PLoS One 2017; 12:e0166785. [PMID: 28182655 PMCID: PMC5300281 DOI: 10.1371/journal.pone.0166785] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 11/03/2016] [Indexed: 01/08/2023] Open
Abstract
PURPOSE Precise and reproducible hippocampus outlining is important to quantify hippocampal atrophy caused by neurodegenerative diseases and to spare the hippocampus in whole brain radiation therapy when performing prophylactic cranial irradiation or treating brain metastases. This study aimed to quantify systematic differences between methods by comparing regional volume and outline reproducibility of manual, FSL-FIRST and FreeSurfer hippocampus segmentations. MATERIALS AND METHODS This study used a dataset from ADNI (Alzheimer's Disease Neuroimaging Initiative), including 20 healthy controls, 40 patients with mild cognitive impairment (MCI), and 20 patients with Alzheimer's disease (AD). For each subject back-to-back (BTB) T1-weighted 3D MPRAGE images were acquired at time-point baseline (BL) and 12 months later (M12). Hippocampi segmentations of all methods were converted into triangulated meshes, regional volumes were extracted and regional Jaccard indices were computed between the hippocampi meshes of paired BTB scans to evaluate reproducibility. Regional volumes and Jaccard indices were modelled as a function of group (G), method (M), hemisphere (H), time-point (T), region (R) and interactions. RESULTS For the volume data the model selection procedure yielded the following significant main effects G, M, H, T and R and interaction effects G-R and M-R. The same model was found for the BTB scans. For all methods volumes reduces with the severity of disease. Significant fixed effects for the regional Jaccard index data were M, R and the interaction M-R. For all methods the middle region was most reproducible, independent of diagnostic group. FSL-FIRST was most and FreeSurfer least reproducible. DISCUSSION/CONCLUSION A novel method to perform detailed analysis of subtle differences in hippocampus segmentation is proposed. The method showed that hippocampal segmentation reproducibility was best for FSL-FIRST and worst for Freesurfer. We also found systematic regional differences in hippocampal segmentation between different methods reinforcing the need of adopting harmonized protocols.
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Affiliation(s)
- Fabian Bartel
- Department of Physics and Medical Technology, VU University Medical Center, Amsterdam, The Netherlands
| | - Hugo Vrenken
- Department of Physics and Medical Technology, VU University Medical Center, Amsterdam, The Netherlands
- Department of Radiology, VU University Medical Center, Amsterdam, The Netherlands
| | - Fetsje Bijma
- Department of Mathematics, VU University Amsterdam, Amsterdam, The Netherlands
| | - Frederik Barkhof
- Department of Radiology, VU University Medical Center, Amsterdam, The Netherlands
- Image Analysis Center, VU University Medical Center, Amsterdam, The Netherlands
| | - Marcel van Herk
- Department of Radiotherapy Physics, University of Manchester, Manchester, United Kingdom
| | - Jan C. de Munck
- Department of Physics and Medical Technology, VU University Medical Center, Amsterdam, The Netherlands
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108
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Sanfilippo C, Nunnari G, Calcagno A, Malaguarnera L, Blennow K, Zetterberg H, Di Rosa M. The chitinases expression is related to Simian Immunodeficiency Virus Encephalitis (SIVE) and in HIV encephalitis (HIVE). Virus Res 2017; 227:220-230. [DOI: 10.1016/j.virusres.2016.10.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 09/14/2016] [Accepted: 10/21/2016] [Indexed: 01/15/2023]
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109
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Valdés Hernández MDC, Cox SR, Kim J, Royle NA, Muñoz Maniega S, Gow AJ, Anblagan D, Bastin ME, Park J, Starr JM, Wardlaw JM, Deary IJ. Hippocampal morphology and cognitive functions in community-dwelling older people: the Lothian Birth Cohort 1936. Neurobiol Aging 2016; 52:1-11. [PMID: 28104542 PMCID: PMC5364373 DOI: 10.1016/j.neurobiolaging.2016.12.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 11/18/2016] [Accepted: 12/13/2016] [Indexed: 01/18/2023]
Abstract
Structural measures of the hippocampus have been linked to a variety of memory processes and also to broader cognitive abilities. Gross volumetry has been widely used, yet the hippocampus has a complex formation, comprising distinct subfields which may be differentially sensitive to the deleterious effects of age, and to different aspects of cognitive performance. However, a comprehensive analysis of multidomain cognitive associations with hippocampal deformations among a large group of cognitively normal older adults is currently lacking. In 654 participants of the Lothian Birth Cohort 1936 (mean age = 72.5, SD = 0.71 years), we examined associations between the morphology of the hippocampus and a variety of memory tests (spatial span, letter-number sequencing, verbal recall, and digit backwards), as well as broader cognitive domains (latent measures of speed, fluid intelligence, and memory). Following correction for age, sex, and vascular risk factors, analysis of memory subtests revealed that only right hippocampal associations in relation to spatial memory survived type 1 error correction in subiculum and in CA1 at the head (β = 0.201, p = 5.843 × 10-4, outward), and in the ventral tail section of CA1 (β = -0.272, p = 1.347 × 10-5, inward). With respect to latent measures of cognitive domains, only deformations associated with processing speed survived type 1 error correction in bilateral subiculum (βabsolute ≤ 0.247, p < 1.369 × 10-4, outward), bilaterally in the ventral tail section of CA1 (βabsolute ≤ 0.242, p < 3.451 × 10-6, inward), and a cluster at the left anterior-to-dorsal region of the head (β = 0.199, p = 5.220 × 10-6, outward). Overall, our results indicate that a complex pattern of both inward and outward hippocampal deformations are associated with better processing speed and spatial memory in older age, suggesting that complex shape-based hippocampal analyses may provide valuable information beyond gross volumetry.
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Affiliation(s)
- Maria Del Carmen Valdés Hernández
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Department of Neuroimaging Sciences, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK; Scottish Imaging Network, a Platform for Scientific Excellence (SINAPSE) Collaboration, Edinburgh, UK
| | - Simon R Cox
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Scottish Imaging Network, a Platform for Scientific Excellence (SINAPSE) Collaboration, Edinburgh, UK; Department of Psychology, University of Edinburgh, Edinburgh, UK.
| | - Jaeil Kim
- School of Computing, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Natalie A Royle
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Department of Neuroimaging Sciences, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK; Scottish Imaging Network, a Platform for Scientific Excellence (SINAPSE) Collaboration, Edinburgh, UK
| | - Susana Muñoz Maniega
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Department of Neuroimaging Sciences, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK; Scottish Imaging Network, a Platform for Scientific Excellence (SINAPSE) Collaboration, Edinburgh, UK
| | - Alan J Gow
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Department of Psychology, Heriot-Watt University, Edinburgh, UK
| | - Devasuda Anblagan
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Department of Neuroimaging Sciences, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK; Scottish Imaging Network, a Platform for Scientific Excellence (SINAPSE) Collaboration, Edinburgh, UK
| | - Mark E Bastin
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Scottish Imaging Network, a Platform for Scientific Excellence (SINAPSE) Collaboration, Edinburgh, UK; Department of Psychology, University of Edinburgh, Edinburgh, UK
| | - Jinah Park
- School of Computing, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - John M Starr
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK
| | - Joanna M Wardlaw
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Scottish Imaging Network, a Platform for Scientific Excellence (SINAPSE) Collaboration, Edinburgh, UK; Department of Psychology, University of Edinburgh, Edinburgh, UK
| | - Ian J Deary
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Department of Psychology, University of Edinburgh, Edinburgh, UK
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110
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Wahlund LO, Westman E, van Westen D, Wallin A, Shams S, Cavallin L, Larsson EM. Imaging biomarkers of dementia: recommended visual rating scales with teaching cases. Insights Imaging 2016; 8:79-90. [PMID: 28004274 PMCID: PMC5265189 DOI: 10.1007/s13244-016-0521-6] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 09/01/2016] [Accepted: 09/19/2016] [Indexed: 11/04/2022] Open
Abstract
Abstract The diagnostic work up of dementia may benefit from structured reporting of CT and/or MRI and the use of standardised visual rating scales. We advocate a more widespread use of standardised scales as part of the workflow in clinical and research evaluation of dementia. We propose routine clinical use of rating scales for medial temporal atrophy (MTA), global cortical atrophy (GCA) and white matter hyperintensities (WMH). These scales can be used for evaluation of both CT and MRI and are efficient in routine imaging assessment in dementia, and may improve the accuracy of diagnosis. Our review provides detailed imaging examples of rating increments in each of these scales and a separate teaching file. The radiologist should relate visual ratings to the clinical assessment and other biomarkers to assist the clinician in the diagnostic decision. Teaching points • Clinical dementia diagnostics would benefit from structured radiological reporting. • Standardised rating scales should be used in dementia assessment. • It is important to relate imaging findings to the clinically suspected diagnosis. Electronic supplementary material The online version of this article (doi:10.1007/s13244-016-0521-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lars-Olof Wahlund
- Division of Clinical Geriatrics, Department of Neurobiology, Care Sciences, and Society, Karolinska Institutet, Stockholm, Sweden
| | - Eric Westman
- Division of Clinical Geriatrics, Department of Neurobiology, Care Sciences, and Society, Karolinska Institutet, Stockholm, Sweden
| | - Danielle van Westen
- Diagnostic Radiology, Clinical Sciences, Lund University, Lund, Sweden.,Imaging and Function, Skåne University Hospital, Lund, Sweden
| | - Anders Wallin
- Institute of Neuroscience and Physiology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Sara Shams
- Department of Clinical Science, Intervention, and Technology, Division of Medical Imaging and Technology, Karolinska Institutet, Stockholm, Sweden. .,Department of Radiology, Karolinska University Hospital, SE-14186, Stockholm, Sweden.
| | - Lena Cavallin
- Department of Clinical Science, Intervention, and Technology, Division of Medical Imaging and Technology, Karolinska Institutet, Stockholm, Sweden.,Department of Radiology, Karolinska University Hospital, SE-14186, Stockholm, Sweden
| | - Elna-Marie Larsson
- Department of Surgical Sciences, Radiology, Uppsala University, Uppsala, Sweden
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111
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Bracht T, Jones DK, Bells S, Walther S, Drakesmith M, Linden D. Myelination of the right parahippocampal cingulum is associated with physical activity in young healthy adults. Brain Struct Funct 2016; 221:4537-4548. [PMID: 26786737 PMCID: PMC5102942 DOI: 10.1007/s00429-016-1183-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 01/05/2016] [Indexed: 11/21/2022]
Abstract
Recent evidence suggests that individual differences in physical activity (PA) may be associated with individual differences in white matter microstructure and with grey matter volume of the hippocampus. Therefore, this study investigated the association between PA and white matter microstructure of pathways connecting to the hippocampus. A total of 33 young, healthy adults underwent magnetic resonance imaging (MRI). High angular resolution diffusion-weighted imaging and multi-component relaxometry MRI scans (multi-component driven equilibrium pulse observation of T1 and T2) were acquired for each participant. Activity levels (AL) of participants were calculated from 72-h actigraphy recordings. Tractography using the damped Richardson Lucy algorithm was used to reconstruct the fornix and bilateral parahippocampal cinguli (PHC). The mean fractional anisotropy (FA) and the myelin water fraction (MWF), a putative marker of myelination, were determined for each pathway. A positive correlation between both AL and FA and between AL and MWF were hypothesized for the three pathways. There was a selective positive correlation between AL and MWF in the right PHC (r = 0.482, p = 0.007). Thus, our results provide initial in vivo evidence for an association between myelination of the right PHC and PA in young healthy adults. Our results suggest that MWF may not only be more specific, but also more sensitive than FA to detect white matter microstructural alterations. If PA was to induce structural plasticity of the right PHC this may contribute to reverse structural alterations of the right PHC in neuropsychiatric disorder with hippocampal pathologies.
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Affiliation(s)
- Tobias Bracht
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, UK.
- Neuroscience and Mental Health Research Institute (NMHRI), Cardiff University, Cardiff, UK.
- Translational Research Centre, University Hospital of Psychiatry, University of Bern, Bolligenstrasse 111, 3000, Bern, Switzerland.
| | - Derek K Jones
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, UK
- Neuroscience and Mental Health Research Institute (NMHRI), Cardiff University, Cardiff, UK
| | - Sonya Bells
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, UK
- Neuroscience and Mental Health Research Institute (NMHRI), Cardiff University, Cardiff, UK
| | - Sebastian Walther
- Translational Research Centre, University Hospital of Psychiatry, University of Bern, Bolligenstrasse 111, 3000, Bern, Switzerland
| | - Mark Drakesmith
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, UK
- Neuroscience and Mental Health Research Institute (NMHRI), Cardiff University, Cardiff, UK
| | - David Linden
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, UK
- Neuroscience and Mental Health Research Institute (NMHRI), Cardiff University, Cardiff, UK
- MRC Centre for Neuropsychiatry Genetics and Genomics, School of Medicine, Cardiff University, Cardiff, UK
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112
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Verfaillie SC, Tijms B, Versteeg A, Benedictus MR, Bouwman FH, Scheltens P, Barkhof F, Vrenken H, van der Flier WM. Thinner temporal and parietal cortex is related to incident clinical progression to dementia in patients with subjective cognitive decline. ALZHEIMER'S & DEMENTIA (AMSTERDAM, NETHERLANDS) 2016; 5:43-52. [PMID: 28054027 PMCID: PMC5198882 DOI: 10.1016/j.dadm.2016.10.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
INTRODUCTION We aimed to investigate if thinner cortex of the Alzheimer's disease (AD)-signature region was related to clinical progression in patients with subjective cognitive decline (SCD). METHODS We included 302 SCD patients with clinical follow-up (≥1 year) and three-dimensional T1 magnetic resonance imaging. We estimated AD-signature cortical thickness, consisting of nine frontal, parietal, and temporal gyri and hippocampal volume. We used Cox proportional hazard models (hazard ratios and 95% confidence intervals) to evaluate cortical thickness in relation to clinical progression to mild cognitive impairment (MCI) or dementia. RESULTS After a follow-up of the mean (standard deviation) 3 (2) years, 49 patients (16%) showed clinical progression to MCI (n = 32), AD (n = 9), or non-AD dementia (n = 8). Hippocampal volumes, thinner cortex of the AD-signature (hazard ratio [95% confidence interval], 5 [2-17]) and various AD-signature subcomponents were associated with increased risk of clinical progression. Stratified analyses showed that thinner AD-signature cortex was specifically predictive for clinical progression to dementia but not to MCI. DISCUSSION In SCD patients, thinner regional cortex is associated with clinical progression to dementia.
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Affiliation(s)
- Sander C.J. Verfaillie
- Alzheimer Center and Department of Neurology, VU University Medical Center, Amsterdam, The Netherlands
| | - Betty Tijms
- Alzheimer Center and Department of Neurology, VU University Medical Center, Amsterdam, The Netherlands
| | - Adriaan Versteeg
- Department of Radiology and Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands
| | - Marije R. Benedictus
- Alzheimer Center and Department of Neurology, VU University Medical Center, Amsterdam, The Netherlands
| | - Femke H. Bouwman
- Alzheimer Center and Department of Neurology, VU University Medical Center, Amsterdam, The Netherlands
| | - Philip Scheltens
- Alzheimer Center and Department of Neurology, VU University Medical Center, Amsterdam, The Netherlands
| | - Frederik Barkhof
- Department of Radiology and Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands
- Institute of Neurology, UCL, London, UK
- Institute of Healthcare Engineering, UCL, London, UK
| | - Hugo Vrenken
- Department of Radiology and Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands
- Department of Physics and Medical Technology, VU University Medical Center, Amsterdam, The Netherlands
| | - Wiesje M. van der Flier
- Alzheimer Center and Department of Neurology, VU University Medical Center, Amsterdam, The Netherlands
- Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, The Netherlands
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113
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Zhou H, Zhou Q, Xu L. Unilateral hippocampal inactivation or lesion selectively impairs remote contextual fear memory. Psychopharmacology (Berl) 2016; 233:3639-46. [PMID: 27485536 DOI: 10.1007/s00213-016-4394-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Accepted: 07/24/2016] [Indexed: 12/17/2022]
Abstract
RATIONALE Contextual fear memory depends on the hippocampus, but the role of unilateral hippocampus in this type of memory remains unclear. OBJECTIVES Herein, pharmacological inactivation or excitotoxic lesions were used to study the role of unilateral hippocampus in the stages of contextual fear memory. RESULTS The pharmacological experiments revealed that compared with the control groups, unilateral hippocampal blockade did not impair 1-day recent memory following learning, whereas bilateral hippocampal blockade significantly impaired this memory. The lesion experiments showed that compared with the control groups, the formed contextual fear memory was retained for 7 days and that 30-day remote memory was markedly reduced in unilateral hippocampal lesion groups. CONCLUSIONS These results indicate that an intact bilateral hippocampus is required for the formation of remote memory and that unilateral hippocampus is sufficient for recent contextual fear memory.
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Affiliation(s)
- Heng Zhou
- School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, 230027, People's Republic of China.,Laboratory of Learning and Memory, Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, CAS, Kunming, 650223, People's Republic of China
| | - Qixin Zhou
- Laboratory of Learning and Memory, Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, CAS, Kunming, 650223, People's Republic of China.
| | - Lin Xu
- Laboratory of Learning and Memory, Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, CAS, Kunming, 650223, People's Republic of China. .,Kunming College of Life Sciences, University of Chinese Academy of Sciences, Kunming, People's Republic of China.
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114
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Madhavadas S, Subramanian S. Cognition enhancing effect of the aqueous extract ofCinnamomum zeylanicumon non-transgenic Alzheimer's disease rat model: Biochemical, histological, and behavioural studies. Nutr Neurosci 2016; 20:526-537. [DOI: 10.1080/1028415x.2016.1194593] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Sowmya Madhavadas
- Department of Neurochemistry, National Institute of Mental Health and Neurosciences, Bangalore 560 029, India
| | - Sarada Subramanian
- Department of Neurochemistry, National Institute of Mental Health and Neurosciences, Bangalore 560 029, India
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115
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León I, Tascón L, Cimadevilla JM. Age and gender-related differences in a spatial memory task in humans. Behav Brain Res 2016; 306:8-12. [DOI: 10.1016/j.bbr.2016.03.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 03/02/2016] [Accepted: 03/04/2016] [Indexed: 01/03/2023]
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116
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Sterling N, Lewis M, Du G, Huang X. Structural Imaging and Parkinson's Disease: Moving Toward Quantitative Markers of Disease Progression. JOURNAL OF PARKINSON'S DISEASE 2016; 6:557-67. [PMID: 27258697 PMCID: PMC5008231 DOI: 10.3233/jpd-160824] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Accepted: 04/27/2016] [Indexed: 12/16/2022]
Abstract
Parkinson's disease (PD) is a progressive age-related neurodegenerative disorder. Although the pathological hallmark of PD is dopaminergic cell death in the substantia nigra pars compacta, widespread neurodegenerative changes occur throughout the brain as disease progresses. Postmortem studies, for example, have demonstrated the presence of Lewy pathology, apoptosis, and loss of neurotransmitters and interneurons in both cortical and subcortical regions of PD patients. Many in vivo structural imaging studies have attempted to gauge PD-related pathology, particularly in gray matter, with the hope of identifying an imaging biomarker. Reports of brain atrophy in PD, however, have been inconsistent, most likely due to differences in the studied populations (i.e. different disease stages and/or clinical subtypes), experimental designs (i.e. cross-sectional vs. longitudinal), and image analysis methodologies (i.e. automatic vs. manual segmentation). This review attempts to summarize the current state of gray matter structural imaging research in PD in relationship to disease progression, reconciling some of the differences in reported results, and to identify challenges and future avenues.
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Affiliation(s)
- N.W. Sterling
- Department of Neurology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA, USA
| | - M.M. Lewis
- Department of Neurology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA, USA
- Department of Pharmacology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA, USA
| | - G. Du
- Department of Neurology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA, USA
| | - X. Huang
- Department of Neurology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA, USA
- Department of Pharmacology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA, USA
- Department of Radiology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA, USA
- Department of Neurosurgery, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA, USA
- Department of Kinesiology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA, USA
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117
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Neuroimaging basis in the conversion of aMCI patients with APOE-ε4 to AD: study protocol of a prospective diagnostic trial. BMC Neurol 2016; 16:64. [PMID: 27176479 PMCID: PMC4866435 DOI: 10.1186/s12883-016-0587-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 05/05/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The ε4 allele of the Apolipoprotein E gene (APOE-ε4) is a potent genetic risk factor for sporadic Alzheimer's disease (AD). Amnestic mild cognitive impairment (aMCI) is an intermediate state between normal cognitive aging and dementia, which is easy to convert to AD dementia. It is an urgent problem in the field of cognitive neuroscience to reveal the conversion of aMCI-ε4 to AD. Based on our preliminary work, we will study the neuroimaging features in the special group of aMCI-ε4 with multi-modality magnetic resonance imaging (structural MRI, resting state-fMRI and diffusion tensor imaging) longitudinally. METHODS/DESIGN In this study, 200 right-handed subjects who are diagnosed as aMCI with APOE-ε4 will be recruited at the memory clinic of the Neurology Department, XuanWu Hospital, Capital Medical University, Beijing, China. All subjects will undergo the neuroimaging and neuropsychological evaluation at a 1 year-interval for 3 years. The primary outcome measures are 1) Microstructural alterations revealed with multimodal MRI scans including structure MRI (sMRI), resting state functional MRI (rs-fMRI), diffusion tensor imaging (DTI); 2) neuropsychological evaluation, including the World Health Organization-University of California-LosAngeles Auditory Verbal Learning Test (WHO-UCLA AVLT), Addenbrook's cognitive examination-revised (ACE-R), mini-mental state examination (MMSE), Montreal Cognitive Assessment (MoCA), Clinical Dementia Rating scale (CDR). DISCUSSION This study is to find out the neuroimaging biomarker and the changing laws of the marker during the progress of aMCI-ε4 to AD, and the final purpose is to provide scientific evidence for new prevention, diagnosis and treatment of AD. TRIAL REGISTRATION This study has been registered to ClinicalTrials.gov (NCT02225964, https://www.clinicaltrials.gov/ ) in August 24, 2014.
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118
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Martins ARS, Fregni F, Simis M, Almeida J. Neuromodulation as a cognitive enhancement strategy in healthy older adults: promises and pitfalls. AGING NEUROPSYCHOLOGY AND COGNITION 2016; 24:158-185. [DOI: 10.1080/13825585.2016.1176986] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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119
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Influence of APOE Genotype on Hippocampal Atrophy over Time - An N=1925 Surface-Based ADNI Study. PLoS One 2016; 11:e0152901. [PMID: 27065111 PMCID: PMC4827849 DOI: 10.1371/journal.pone.0152901] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 03/21/2016] [Indexed: 11/25/2022] Open
Abstract
The apolipoprotein E (APOE) e4 genotype is a powerful risk factor for late-onset Alzheimer’s disease (AD). In the Alzheimer’s Disease Neuroimaging Initiative (ADNI) cohort, we previously reported significant baseline structural differences in APOE e4 carriers relative to non-carriers, involving the left hippocampus more than the right—a difference more pronounced in e4 homozygotes than heterozygotes. We now examine the longitudinal effects of APOE genotype on hippocampal morphometry at 6-, 12- and 24-months, in the ADNI cohort. We employed a new automated surface registration system based on conformal geometry and tensor-based morphometry. Among different hippocampal surfaces, we computed high-order correspondences, using a novel inverse-consistent surface-based fluid registration method and multivariate statistics consisting of multivariate tensor-based morphometry (mTBM) and radial distance. At each time point, using Hotelling’s T2 test, we found significant morphological deformation in APOE e4 carriers relative to non-carriers in the full cohort as well as in the non-demented (pooled MCI and control) subjects at each follow-up interval. In the complete ADNI cohort, we found greater atrophy of the left hippocampus than the right, and this asymmetry was more pronounced in e4 homozygotes than heterozygotes. These findings, combined with our earlier investigations, demonstrate an e4 dose effect on accelerated hippocampal atrophy, and support the enrichment of prevention trial cohorts with e4 carriers.
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120
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Zhang W, Shi J, Stonnington C, Bauer RJ, Gutman BA, Chen K, Thompson PM, Reiman EM, Caselli RJ, Wang Y. MORPHOMETRIC ANALYSIS OF HIPPOCAMPUS AND LATERAL VENTRICLE REVEALS REGIONAL DIFFERENCE BETWEEN COGNITIVELY STABLE AND DECLINING PERSONS. PROCEEDINGS. IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING 2016; 2016:14-18. [PMID: 27499828 PMCID: PMC4974021 DOI: 10.1109/isbi.2016.7493200] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Alzheimers disease (AD) is a progressive neurodegenerative disease most prevalent in the elderly. Distinguishing disease-related memory decline from normal age-related memory decline has been clinically difficult due to the subtlety of cognitive change during the preclinical stage of AD. In contrast, sensitive biomarkers derived from in vivo neuroimaging data could improve the early identification of AD. In this study, we employed a morphometric analysis in the hippocampus and lateral ventricle. A novel group-wise template-based segmentation algorithm was developed for ventricular segmentation. Further, surface multivariate tensor-based morphometry and radial distance on each surface point were computed. Using Hotellings T2 test, we found significant morphometric differences in both hippocampus and lateral ventricle between stable and clinically declining subjects. The left hemisphere was more severely affected than the right during this early disease stage. Hippocampal and ventricular morphometry has significant potential as an imaging biomarker for onset prediction and early diagnosis of AD.
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Affiliation(s)
- Wen Zhang
- School of Computing, Informatics, and Decision Systems Engineering, Arizona State Univ., Tempe, AZ
| | - Jie Shi
- School of Computing, Informatics, and Decision Systems Engineering, Arizona State Univ., Tempe, AZ
| | | | | | - Boris A Gutman
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Univ. of Southern California, Marina del Rey, CA
| | - Kewei Chen
- Banner Alzheimer's Institute, Phoenix, AZ
| | - Paul M Thompson
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, Univ. of Southern California, Marina del Rey, CA
| | | | | | - Yalin Wang
- School of Computing, Informatics, and Decision Systems Engineering, Arizona State Univ., Tempe, AZ
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121
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Wang HF, Tan L, Cao L, Zhu XC, Jiang T, Tan MS, Liu Y, Wang C, Tsai RM, Jia JP, Yu JT. Application of the IWG-2 Diagnostic Criteria for Alzheimer’s Disease to the ADNI. J Alzheimers Dis 2016; 51:227-36. [PMID: 26836176 DOI: 10.3233/jad-150824] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Hui-Fu Wang
- Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, China
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, China
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China
| | - Lei Cao
- Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, China
| | - Xi-Chen Zhu
- Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, China
| | - Teng Jiang
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, China
| | - Meng-Shan Tan
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China
| | - Ying Liu
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China
| | - Chong Wang
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China
| | - Richard M. Tsai
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Jian-Ping Jia
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, Beijing, China
| | - Jin-Tai Yu
- Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, China
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, China
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
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Kawamura T, Umemura T, Umegaki H, Imamine R, Kawano N, Mase H, Mizoguchi A, Minatoguchi M, Kusama M, Kouchi Y, Watarai A, Kanai A, Nakashima E, Hotta N. Factors Associated with Changes in Brain Atrophy during a Three-Year Observation in Elderly Diabetic Patients: Effect of Renal Impairment on Hippocampal Atrophy. Dement Geriatr Cogn Dis Extra 2016; 6:55-67. [PMID: 27293417 PMCID: PMC4899660 DOI: 10.1159/000443497] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND/AIMS We conducted a 3-year longitudinal study concerning factors associated with changes in brain atrophy in elderly diabetic patients. METHODS We evaluated hippocampal and global brain atrophy using automatic voxel-based morphometry of structural magnetic resonance images, 4 cognitive function tests, and cerebral small vessel disease (SVD) in 66 diabetic patients. RESULTS During the 3-year follow-up, hippocampal and global brain atrophy advanced, and cognitive functions worsened. For changes in hippocampal atrophy, changes in estimated glomerular filtration rate (eGFR), albuminuria, and being an ApoE ε4 carrier were independent factors; change in the number of silent brain infarctions was an independent factor for changes in global brain atrophy. A significant association of changes in eGFR and albuminuria with hippocampal atrophy remained after adjusting for confounders including SVD. Both types of brain atrophy at baseline were significantly correlated with cognitive impairment at baseline and especially associated with changes in delayed word recall during the follow-up after adjusting for confounders. CONCLUSION Changes in eGFR and albuminuria during follow-up were independent risk factors for hippocampal atrophy, which was associated with decline in delayed word recall, suggesting that management of chronic kidney disease may prevent the progression of hippocampal atrophy.
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Affiliation(s)
- Takahiko Kawamura
- Departments of Diabetes and Endocrine Internal Medicine, Chubu Rosai Hospital, Nagoya, Japan; Center for Preventive Medicine, Chubu Rosai Hospital, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | - Hiroyuki Umegaki
- Departments of Community Health Care and Geriatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Rui Imamine
- Departments of Diabetes and Endocrine Internal Medicine, Chubu Rosai Hospital, Nagoya, Japan
| | - Naoko Kawano
- Departments of Community Health Care and Geriatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan; Departments of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hajime Mase
- Departments of Diabetes and Endocrine Internal Medicine, Chubu Rosai Hospital, Nagoya, Japan
| | - Asako Mizoguchi
- Departments of Diabetes and Endocrine Internal Medicine, Chubu Rosai Hospital, Nagoya, Japan
| | - Makiko Minatoguchi
- Departments of Diabetes and Endocrine Internal Medicine, Chubu Rosai Hospital, Nagoya, Japan
| | - Minoru Kusama
- Departments of Diabetes and Endocrine Internal Medicine, Chubu Rosai Hospital, Nagoya, Japan
| | - Yu Kouchi
- Departments of Diabetes and Endocrine Internal Medicine, Chubu Rosai Hospital, Nagoya, Japan
| | - Atsuko Watarai
- Center for Preventive Medicine, Chubu Rosai Hospital, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akio Kanai
- Center for Preventive Medicine, Chubu Rosai Hospital, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Eitaro Nakashima
- Departments of Diabetes and Endocrine Internal Medicine, Chubu Rosai Hospital, Nagoya, Japan
| | - Nigishi Hotta
- Departments of Diabetes and Endocrine Internal Medicine, Chubu Rosai Hospital, Nagoya, Japan
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Roy S, Carass A, Pacheco J, Bilgel M, Resnick SM, Prince JL, Pham DL. Temporal filtering of longitudinal brain magnetic resonance images for consistent segmentation. Neuroimage Clin 2016; 11:264-275. [PMID: 26958465 PMCID: PMC4773508 DOI: 10.1016/j.nicl.2016.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 01/13/2016] [Accepted: 02/12/2016] [Indexed: 01/13/2023]
Abstract
Longitudinal analysis of magnetic resonance images of the human brain provides knowledge of brain changes during both normal aging as well as the progression of many diseases. Previous longitudinal segmentation methods have either ignored temporal information or have incorporated temporal consistency constraints within the algorithm. In this work, we assume that some anatomical brain changes can be explained by temporal transitions in image intensities. Once the images are aligned in the same space, the intensities of each scan at the same voxel constitute a temporal (or 4D) intensity trend at that voxel. Temporal intensity variations due to noise or other artifacts are corrected by a 4D intensity-based filter that smooths the intensity values where appropriate, while preserving real anatomical changes such as atrophy. Here smoothing refers to removal of sudden changes or discontinuities in intensities. Images processed with the 4D filter can be used as a pre-processing step to any segmentation method. We show that such a longitudinal pre-processing step produces robust and consistent longitudinal segmentation results, even when applying 3D segmentation algorithms. We compare with state-of-the-art 4D segmentation algorithms. Specifically, we experimented on three longitudinal datasets containing 4-12 time-points, and showed that the 4D temporal filter is more robust and has more power in distinguishing between healthy subjects and those with dementia, mild cognitive impairment, as well as different phenotypes of multiple sclerosis.
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Affiliation(s)
- Snehashis Roy
- Center for Neuroscience and Regenerative Medicine, Henry M. Jackson Foundation for the Advancement of Military Medicine, United States,Corresponding author.
| | - Aaron Carass
- Image Analysis and Communications Laboratory, Department of Electrical and Computer Engineering, Johns Hopkins University, United States,Department of Computer Science, Johns Hopkins University, United States
| | - Jennifer Pacheco
- Laboratory of Behavioral Neuroscience, National Institute on Aging, United States
| | - Murat Bilgel
- Image Analysis and Communications Laboratory, Department of Electrical and Computer Engineering, Johns Hopkins University, United States,Laboratory of Behavioral Neuroscience, National Institute on Aging, United States
| | - Susan M. Resnick
- Laboratory of Behavioral Neuroscience, National Institute on Aging, United States
| | - Jerry L. Prince
- Image Analysis and Communications Laboratory, Department of Electrical and Computer Engineering, Johns Hopkins University, United States
| | - Dzung L. Pham
- Center for Neuroscience and Regenerative Medicine, Henry M. Jackson Foundation for the Advancement of Military Medicine, United States
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Abstract
BACKGROUND The aim of this study was to compare the performance and power of the best-established diagnostic biological markers as outcome measures for clinical trials in patients with mild cognitive impairment (MCI). METHODS Magnetic resonance imaging, F-18 fluorodeoxyglucose positron emission tomography markers, and Alzheimer's Disease Assessment Scale-cognitive subscale were compared in terms of effect size and statistical power over different follow-up periods in 2 MCI groups, selected from Alzheimer's Disease Neuroimaging Initiative data set based on cerebrospinal fluid (abnormal cerebrospinal fluid Aβ1-42 concentration-ABETA+) or magnetic resonance imaging evidence of Alzheimer disease (positivity to hippocampal atrophy-HIPPO+). Biomarkers progression was modeled through mixed effect models. Scaled slope was chosen as measure of effect size. Biomarkers power was estimated using simulation algorithms. RESULTS Seventy-four ABETA+ and 51 HIPPO+ MCI patients were included in the study. Imaging biomarkers of neurodegeneration, especially MR measurements, showed highest performance. For all biomarkers and both MCI groups, power increased with increasing follow-up time, irrespective of biomarker assessment frequency. CONCLUSION These findings provide information about biomarker enrichment and outcome measurements that could be employed to reduce MCI patient samples and treatment duration in future clinical trials.
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125
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Population imaging in neuroepidemiology. Neuroepidemiology 2016. [DOI: 10.1016/b978-0-12-802973-2.00005-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] Open
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126
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Ikram MA, van der Lugt A, Niessen WJ, Koudstaal PJ, Krestin GP, Hofman A, Bos D, Vernooij MW. The Rotterdam Scan Study: design update 2016 and main findings. Eur J Epidemiol 2015; 30:1299-315. [PMID: 26650042 PMCID: PMC4690838 DOI: 10.1007/s10654-015-0105-7] [Citation(s) in RCA: 156] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 11/25/2015] [Indexed: 12/20/2022]
Abstract
Imaging plays an essential role in research on neurological diseases in the elderly. The Rotterdam Scan Study was initiated as part of the ongoing Rotterdam Study with the aim to elucidate the causes of neurological disease by performing imaging of the brain in a prospective population-based setting. Initially, in 1995 and 1999, random subsamples of participants from the Rotterdam Study underwent neuroimaging, whereas from 2005 onwards MRI has been implemented into the core protocol of the Rotterdam Study. In this paper, we discuss the background and rationale of the Rotterdam Scan Study. Moreover, we describe the imaging protocol, image post-processing techniques, and the main findings to date. Finally, we provide recommendations for future research, which will also be topics of investigation in the Rotterdam Scan Study.
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Affiliation(s)
- M Arfan Ikram
- Department of Epidemiology, Erasmus MC University Medical Center, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands.
- Department of Radiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.
- Department of Neurology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.
| | - Aad van der Lugt
- Department of Radiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Wiro J Niessen
- Biomedical Imaging Group Rotterdam, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Faculty of Applied Sciences, Delft University of Technology, Delft, The Netherlands
| | - Peter J Koudstaal
- Department of Neurology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Gabriel P Krestin
- Department of Radiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Albert Hofman
- Department of Epidemiology, Erasmus MC University Medical Center, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Daniel Bos
- Department of Epidemiology, Erasmus MC University Medical Center, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
- Department of Radiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Meike W Vernooij
- Department of Epidemiology, Erasmus MC University Medical Center, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
- Department of Radiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
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127
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Barber RC, Phillips NR, Tilson JL, Huebinger RM, Shewale SJ, Koenig JL, Mitchel JS, O’Bryant SE, Waring SC, Diaz-Arrastia R, Chasse S, Wilhelmsen KC. Can Genetic Analysis of Putative Blood Alzheimer's Disease Biomarkers Lead to Identification of Susceptibility Loci? PLoS One 2015; 10:e0142360. [PMID: 26625115 PMCID: PMC4666664 DOI: 10.1371/journal.pone.0142360] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 10/21/2015] [Indexed: 01/22/2023] Open
Abstract
Although 24 Alzheimer’s disease (AD) risk loci have been reliably identified, a large portion of the predicted heritability for AD remains unexplained. It is expected that additional loci of small effect will be identified with an increased sample size. However, the cost of a significant increase in Case-Control sample size is prohibitive. The current study tests whether exploring the genetic basis of endophenotypes, in this case based on putative blood biomarkers for AD, can accelerate the identification of susceptibility loci using modest sample sizes. Each endophenotype was used as the outcome variable in an independent GWAS. Endophenotypes were based on circulating concentrations of proteins that contributed significantly to a published blood-based predictive algorithm for AD. Endophenotypes included Monocyte Chemoattractant Protein 1 (MCP1), Vascular Cell Adhesion Molecule 1 (VCAM1), Pancreatic Polypeptide (PP), Beta2 Microglobulin (B2M), Factor VII (F7), Adiponectin (ADN) and Tenascin C (TN-C). Across the seven endophenotypes, 47 SNPs were associated with outcome with a p-value ≤1x10-7. Each signal was further characterized with respect to known genetic loci associated with AD. Signals for several endophenotypes were observed in the vicinity of CR1, MS4A6A/MS4A4E, PICALM, CLU, and PTK2B. The strongest signal was observed in association with Factor VII levels and was located within the F7 gene. Additional signals were observed in MAP3K13, ZNF320, ATP9B and TREM1. Conditional regression analyses suggested that the SNPs contributed to variation in protein concentration independent of AD status. The identification of two putatively novel AD loci (in the Factor VII and ATP9B genes), which have not been located in previous studies despite massive sample sizes, highlights the benefits of an endophenotypic approach for resolving the genetic basis for complex diseases. The coincidence of several of the endophenotypic signals with known AD loci may point to novel genetic interactions and should be further investigated.
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Affiliation(s)
- Robert C. Barber
- Department of Molecular & Medical Genetics, University of North Texas Health Science Center, Fort Worth, Texas, United States of America
- Institute for Aging and Alzheimer’s Disease Research, University of North Texas Health Science Center, Fort Worth, Texas, United States of America
- * E-mail:
| | - Nicole R. Phillips
- Department of Biology, University of Dallas, Dallas, Texas, United States of America
| | - Jeffrey L. Tilson
- Renaissance Computing Institute, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Ryan M. Huebinger
- Department of Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Shantanu J. Shewale
- Department of Molecular & Medical Genetics, University of North Texas Health Science Center, Fort Worth, Texas, United States of America
| | - Jessica L. Koenig
- Department of Molecular & Medical Genetics, University of North Texas Health Science Center, Fort Worth, Texas, United States of America
| | - Jeffrey S. Mitchel
- Department of Molecular & Medical Genetics, University of North Texas Health Science Center, Fort Worth, Texas, United States of America
| | - Sid E. O’Bryant
- Institute for Aging and Alzheimer’s Disease Research, University of North Texas Health Science Center, Fort Worth, Texas, United States of America
- Department of Internal Medicine, University of North Texas Health Science Center, Fort Worth, Texas, United States of America
| | - Stephen C. Waring
- Essentia Institute of Rural Health, Duluth, Minnesota, United States of America
| | - Ramon Diaz-Arrastia
- Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Rockville, Maryland, United States of America
| | - Scott Chasse
- Department of Genetics, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Kirk C. Wilhelmsen
- Renaissance Computing Institute, University of North Carolina, Chapel Hill, North Carolina, United States of America
- Department of Genetic Medicine, University of North Carolina, Chapel Hill, North Carolina, United States of America
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128
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Schaapsmeerders P, Tuladhar AM, Maaijwee NAM, Rutten-Jacobs LCA, Arntz RM, Schoonderwaldt HC, Dorresteijn LDA, van Dijk EJ, Kessels RPC, de Leeuw FE. Lower Ipsilateral Hippocampal Integrity after Ischemic Stroke in Young Adults: A Long-Term Follow-Up Study. PLoS One 2015; 10:e0139772. [PMID: 26462115 PMCID: PMC4603678 DOI: 10.1371/journal.pone.0139772] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 09/17/2015] [Indexed: 11/18/2022] Open
Abstract
Background and purpose Memory impairment after stroke is poorly understood as stroke rarely occurs in the hippocampus. Previous studies have observed smaller ipsilateral hippocampal volumes after stroke compared with controls. Possibly, these findings on macroscopic level are not the first occurrence of structural damage and are preceded by microscopic changes that may already be associated with a worse memory function. We therefore examined the relationship between hippocampal integrity, volume, and memory performance long after first-ever ischemic stroke in young adults. Methods We included all consecutive first-ever ischemic stroke patients, without hippocampal strokes or recurrent stroke/TIA, aged 18–50 years, admitted to our academic hospital between 1980 and 2010. One hundred and forty-six patients underwent T1 MPRAGE, DTI scanning and completed the Rey Auditory Verbal Learning Test and were compared with 84 stroke-free controls. After manual correction of hippocampal automatic segmentation, we calculated mean hippocampal fractional anisotropy (FA) and diffusivity (MD). Results On average 10 years after ischemic stroke, lesion volume was associated with lower ipsilateral hippocampal integrity (p<0.05), independent of hippocampal volume. In patients with a normal ipsilateral hippocampal volume (volume is less than or equal to 1.5 SD below the mean volume of controls) significant differences in ipsilateral hippocampal MD were observed (p<0.0001). However, patients with a normal hippocampal volume and high hippocampal MD did not show a worse memory performance compared with patients with a normal volume and low hippocampal MD (p>0.05). Conclusions Patients with average ipsilateral hippocampal volume could already have lower ipsilateral hippocampal integrity, although at present with no attendant worse memory performance compared with patients with high hippocampal integrity. Longitudinal studies are needed to investigate whether a low hippocampal integrity after stroke might lead to exacerbated memory decline with increasing age.
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Affiliation(s)
- Pauline Schaapsmeerders
- Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Nijmegen, the Netherlands
| | - Anil M. Tuladhar
- Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Nijmegen, the Netherlands
| | - Noortje A. M. Maaijwee
- Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Nijmegen, the Netherlands
| | | | - Renate M. Arntz
- Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Nijmegen, the Netherlands
| | - Hennie C. Schoonderwaldt
- Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Nijmegen, the Netherlands
| | | | - Ewoud J. van Dijk
- Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Nijmegen, the Netherlands
| | - Roy P. C. Kessels
- Donders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience and Centre for Cognition, Radboud University Nijmegen, Nijmegen, the Netherlands
- Department of Medical Psychology, Radboud university medical centre, Nijmegen, the Netherlands
| | - Frank-Erik de Leeuw
- Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Nijmegen, the Netherlands
- * E-mail:
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129
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Abstract
The Rotterdam Study is a prospective cohort study ongoing since 1990 in the city of Rotterdam in The Netherlands. The study targets cardiovascular, endocrine, hepatic, neurological, ophthalmic, psychiatric, dermatological, otolaryngological, locomotor, and respiratory diseases. As of 2008, 14,926 subjects aged 45 years or over comprise the Rotterdam Study cohort. The findings of the Rotterdam Study have been presented in over 1200 research articles and reports (see www.erasmus-epidemiology.nl/rotterdamstudy ). This article gives the rationale of the study and its design. It also presents a summary of the major findings and an update of the objectives and methods.
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130
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Kliper E, Ben Assayag E, Korczyn AD, Auriel E, Shopin L, Hallevi H, Shenhar-Tsarfaty S, Mike A, Artzi M, Klovatch I, Bornstein NM, Ben Bashat D. Cognitive state following mild stroke: A matter of hippocampal mean diffusivity. Hippocampus 2015. [PMID: 26222988 DOI: 10.1002/hipo.22500] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The hippocampus is known to play a vital role in learning and memory and was demonstrated as an early imaging marker for Alzheimer's disease (AD). However, its role as a predictor for mild cognitive impairment and dementia following stroke is unclear. The main purpose of this study was to examine the associations between hippocampal volume, mean diffusivity (MD) and connectivity and cognitive state following stroke. Eighty three consecutive first ever mild to moderate stroke or transient ischemic attack (TIA) survivors from our ongoing prospective TABASCO (Tel Aviv Brain Acute Stroke Cohort) study underwent magnetic resonance imaging scans within 7 days of stroke onset. Hippocampal volume was measured from T1 weighted images, hippocampal mean diffusivity was calculated from diffusion tensor imaging and connectivity was calculated from resting state fMRI. Global cognitive assessments were evaluated during hospitalization and 6 and 12 months later using a computerized neuropsychological battery. Multiple linear regression analysis was used to test which of the hippocampi measurements best predict cognitive state. All three imaging parameters were significantly correlated to each other (|r's| >0.3, P's < 0.005), and with cognitive state 6 and 12 months after the event. Multiple regression analyses demonstrated the predictive role of hippocampal mean diffusivity (β = -0.382, P = 0.026) on cognitive state, above and beyond that of volume and connectivity of this structure. To our knowledge, the combination of hippocampal volume, mean diffusivity and connectivity in first ever post stroke or TIA patients has not yet been considered in relation to cognitive state. The results demonstrate the predictive role of hippocampal mean diffusivity, suggesting that these changes may precede and contribute to volumetric and connectivity changes in the hippocampi, potentially serving as a marker for early identification of patients at risk of developing cognitive impairment or dementia.
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Affiliation(s)
- Efrat Kliper
- Functional Brain Center, the Wohl Institute for Advanced Imaging, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Imaging devision, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Neurology Department, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Einor Ben Assayag
- Neurology Department, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Amos D Korczyn
- Imaging devision, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Eitan Auriel
- Neurology Department, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ludmila Shopin
- Neurology Department, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Hen Hallevi
- Neurology Department, Carmel Medical Center, Haifa, Israel
| | | | - Anat Mike
- Neurology Department, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Moran Artzi
- Functional Brain Center, the Wohl Institute for Advanced Imaging, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Imaging devision, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ilana Klovatch
- Functional Brain Center, the Wohl Institute for Advanced Imaging, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Natan M Bornstein
- Imaging devision, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Neurology Department, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Dafna Ben Bashat
- Functional Brain Center, the Wohl Institute for Advanced Imaging, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Imaging devision, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
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131
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The role of cerebellar volume in cognition in the general elderly population. Alzheimer Dis Assoc Disord 2015; 28:352-7. [PMID: 24577204 DOI: 10.1097/wad.0000000000000024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND It is unknown whether the cerebellum affects cognitive function in an aging community-dwelling population. In a population-based study on 3745 nondemented individuals aged 45 years and above, we investigated the relationship between cerebellar volume and cognitive function. METHODS Brain volumes were obtained using automatic tissue segmentation of magnetic resonance imaging scans. Cognitive functioning was assessed using MMSE and cognitive compound scores of global cognition, executive function, information processing speed, memory, and motor speed. Linear regression modeling was used to study the associations between cerebellar volumes and cognitive measures, independent of cerebral volumes. RESULTS We found a relationship between larger cerebellar volume and better global cognition, executive function, information processing speed, and motor speed. After adjustment for cerebral volume, only cerebellar gray matter volume remained borderline significantly associated with global cognition and information processing speed. After Bonferroni correction, the few associations found between cerebellar volume and cognition disappeared. CONCLUSIONS We only found a minor relationship between larger cerebellar volume and better cognition in healthy older adults, which further attenuated after correcting for cerebral volume. Our findings support the notion that cerebellar volume has an influence on cognition in aging, but that it is not the major leading structure.
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132
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Dong C, Nabizadeh N, Caunca M, Cheung YK, Rundek T, Elkind MSV, DeCarli C, Sacco RL, Stern Y, Wright CB. Cognitive correlates of white matter lesion load and brain atrophy: the Northern Manhattan Study. Neurology 2015; 85:441-9. [PMID: 26156514 DOI: 10.1212/wnl.0000000000001716] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 04/02/2015] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE We investigated white matter lesion load and global and regional brain volumes in relation to domain-specific cognitive performance in the stroke-free Northern Manhattan Study (NOMAS) population. METHODS We quantified white matter hyperintensity volume (WMHV), total cerebral volume (TCV), and total lateral ventricular (TLV) volume, as well as hippocampal and cortical gray matter (GM) lobar volumes in a subgroup. We used general linear models to examine MRI markers in relation to domain-specific cognitive performance, adjusting for key covariates. RESULTS MRI and cognitive data were available for 1,163 participants (mean age 70 ± 9 years; 60% women; 66% Hispanic, 17% black, 15% white). Across the entire sample, those with greater WMHV had worse processing speed. Those with larger TLV volume did worse on episodic memory, processing speed, and semantic memory tasks, and TCV did not explain domain-specific variability in cognitive performance independent of other measures. Age was an effect modifier, and stratified analysis showed that TCV and WMHV explained variability in some domains above age 70. Smaller hippocampal volume was associated with worse performance across domains, even after adjusting for APOE ε4 and vascular risk factors, whereas smaller frontal lobe volumes were only associated with worse executive function. CONCLUSIONS In this racially/ethnically diverse, community-based sample, white matter lesion load was inversely associated with cognitive performance, independent of brain atrophy. Lateral ventricular, hippocampal, and lobar GM volumes explained domain-specific variability in cognitive performance.
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Affiliation(s)
- Chuanhui Dong
- From the Evelyn F. McKnight Brain Institute (C. Dong, N.N., M.C., T.R., R.L.S., C.B.W.); Departments of Neurology (R.L.S., C.D., N.N., T.R., C.B.W.), Human Genetics (R.L.S.), and Epidemiology and Public Health Sciences (T.R., R.L.S., C.B.W.); and Neuroscience Program (R.L.S., C.B.W.), Miller School of Medicine, University of Miami, Miami, FL; Departments of Biostatistics (Y.K.C.) and Epidemiology (M.S.V.E.), Mailman School of Public Health, Columbia University, New York, NY; Departments of Neurology (M.S.V.E.) and Psychiatry (Y.S.), the Gertrude H. Sergievsky Center (M.S.V.E., Y.S.), and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain (Y.S.), Columbia University College of Physicians and Surgeons, New York, NY; and Department of Neurology and the Center for Neuroscience (C. DeCarli), University of California at Davis, Sacramento, CA
| | - Nooshin Nabizadeh
- From the Evelyn F. McKnight Brain Institute (C. Dong, N.N., M.C., T.R., R.L.S., C.B.W.); Departments of Neurology (R.L.S., C.D., N.N., T.R., C.B.W.), Human Genetics (R.L.S.), and Epidemiology and Public Health Sciences (T.R., R.L.S., C.B.W.); and Neuroscience Program (R.L.S., C.B.W.), Miller School of Medicine, University of Miami, Miami, FL; Departments of Biostatistics (Y.K.C.) and Epidemiology (M.S.V.E.), Mailman School of Public Health, Columbia University, New York, NY; Departments of Neurology (M.S.V.E.) and Psychiatry (Y.S.), the Gertrude H. Sergievsky Center (M.S.V.E., Y.S.), and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain (Y.S.), Columbia University College of Physicians and Surgeons, New York, NY; and Department of Neurology and the Center for Neuroscience (C. DeCarli), University of California at Davis, Sacramento, CA
| | - Michelle Caunca
- From the Evelyn F. McKnight Brain Institute (C. Dong, N.N., M.C., T.R., R.L.S., C.B.W.); Departments of Neurology (R.L.S., C.D., N.N., T.R., C.B.W.), Human Genetics (R.L.S.), and Epidemiology and Public Health Sciences (T.R., R.L.S., C.B.W.); and Neuroscience Program (R.L.S., C.B.W.), Miller School of Medicine, University of Miami, Miami, FL; Departments of Biostatistics (Y.K.C.) and Epidemiology (M.S.V.E.), Mailman School of Public Health, Columbia University, New York, NY; Departments of Neurology (M.S.V.E.) and Psychiatry (Y.S.), the Gertrude H. Sergievsky Center (M.S.V.E., Y.S.), and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain (Y.S.), Columbia University College of Physicians and Surgeons, New York, NY; and Department of Neurology and the Center for Neuroscience (C. DeCarli), University of California at Davis, Sacramento, CA
| | - Ying Kuen Cheung
- From the Evelyn F. McKnight Brain Institute (C. Dong, N.N., M.C., T.R., R.L.S., C.B.W.); Departments of Neurology (R.L.S., C.D., N.N., T.R., C.B.W.), Human Genetics (R.L.S.), and Epidemiology and Public Health Sciences (T.R., R.L.S., C.B.W.); and Neuroscience Program (R.L.S., C.B.W.), Miller School of Medicine, University of Miami, Miami, FL; Departments of Biostatistics (Y.K.C.) and Epidemiology (M.S.V.E.), Mailman School of Public Health, Columbia University, New York, NY; Departments of Neurology (M.S.V.E.) and Psychiatry (Y.S.), the Gertrude H. Sergievsky Center (M.S.V.E., Y.S.), and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain (Y.S.), Columbia University College of Physicians and Surgeons, New York, NY; and Department of Neurology and the Center for Neuroscience (C. DeCarli), University of California at Davis, Sacramento, CA
| | - Tatjana Rundek
- From the Evelyn F. McKnight Brain Institute (C. Dong, N.N., M.C., T.R., R.L.S., C.B.W.); Departments of Neurology (R.L.S., C.D., N.N., T.R., C.B.W.), Human Genetics (R.L.S.), and Epidemiology and Public Health Sciences (T.R., R.L.S., C.B.W.); and Neuroscience Program (R.L.S., C.B.W.), Miller School of Medicine, University of Miami, Miami, FL; Departments of Biostatistics (Y.K.C.) and Epidemiology (M.S.V.E.), Mailman School of Public Health, Columbia University, New York, NY; Departments of Neurology (M.S.V.E.) and Psychiatry (Y.S.), the Gertrude H. Sergievsky Center (M.S.V.E., Y.S.), and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain (Y.S.), Columbia University College of Physicians and Surgeons, New York, NY; and Department of Neurology and the Center for Neuroscience (C. DeCarli), University of California at Davis, Sacramento, CA
| | - Mitchell S V Elkind
- From the Evelyn F. McKnight Brain Institute (C. Dong, N.N., M.C., T.R., R.L.S., C.B.W.); Departments of Neurology (R.L.S., C.D., N.N., T.R., C.B.W.), Human Genetics (R.L.S.), and Epidemiology and Public Health Sciences (T.R., R.L.S., C.B.W.); and Neuroscience Program (R.L.S., C.B.W.), Miller School of Medicine, University of Miami, Miami, FL; Departments of Biostatistics (Y.K.C.) and Epidemiology (M.S.V.E.), Mailman School of Public Health, Columbia University, New York, NY; Departments of Neurology (M.S.V.E.) and Psychiatry (Y.S.), the Gertrude H. Sergievsky Center (M.S.V.E., Y.S.), and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain (Y.S.), Columbia University College of Physicians and Surgeons, New York, NY; and Department of Neurology and the Center for Neuroscience (C. DeCarli), University of California at Davis, Sacramento, CA
| | - Charles DeCarli
- From the Evelyn F. McKnight Brain Institute (C. Dong, N.N., M.C., T.R., R.L.S., C.B.W.); Departments of Neurology (R.L.S., C.D., N.N., T.R., C.B.W.), Human Genetics (R.L.S.), and Epidemiology and Public Health Sciences (T.R., R.L.S., C.B.W.); and Neuroscience Program (R.L.S., C.B.W.), Miller School of Medicine, University of Miami, Miami, FL; Departments of Biostatistics (Y.K.C.) and Epidemiology (M.S.V.E.), Mailman School of Public Health, Columbia University, New York, NY; Departments of Neurology (M.S.V.E.) and Psychiatry (Y.S.), the Gertrude H. Sergievsky Center (M.S.V.E., Y.S.), and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain (Y.S.), Columbia University College of Physicians and Surgeons, New York, NY; and Department of Neurology and the Center for Neuroscience (C. DeCarli), University of California at Davis, Sacramento, CA
| | - Ralph L Sacco
- From the Evelyn F. McKnight Brain Institute (C. Dong, N.N., M.C., T.R., R.L.S., C.B.W.); Departments of Neurology (R.L.S., C.D., N.N., T.R., C.B.W.), Human Genetics (R.L.S.), and Epidemiology and Public Health Sciences (T.R., R.L.S., C.B.W.); and Neuroscience Program (R.L.S., C.B.W.), Miller School of Medicine, University of Miami, Miami, FL; Departments of Biostatistics (Y.K.C.) and Epidemiology (M.S.V.E.), Mailman School of Public Health, Columbia University, New York, NY; Departments of Neurology (M.S.V.E.) and Psychiatry (Y.S.), the Gertrude H. Sergievsky Center (M.S.V.E., Y.S.), and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain (Y.S.), Columbia University College of Physicians and Surgeons, New York, NY; and Department of Neurology and the Center for Neuroscience (C. DeCarli), University of California at Davis, Sacramento, CA
| | - Yaakov Stern
- From the Evelyn F. McKnight Brain Institute (C. Dong, N.N., M.C., T.R., R.L.S., C.B.W.); Departments of Neurology (R.L.S., C.D., N.N., T.R., C.B.W.), Human Genetics (R.L.S.), and Epidemiology and Public Health Sciences (T.R., R.L.S., C.B.W.); and Neuroscience Program (R.L.S., C.B.W.), Miller School of Medicine, University of Miami, Miami, FL; Departments of Biostatistics (Y.K.C.) and Epidemiology (M.S.V.E.), Mailman School of Public Health, Columbia University, New York, NY; Departments of Neurology (M.S.V.E.) and Psychiatry (Y.S.), the Gertrude H. Sergievsky Center (M.S.V.E., Y.S.), and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain (Y.S.), Columbia University College of Physicians and Surgeons, New York, NY; and Department of Neurology and the Center for Neuroscience (C. DeCarli), University of California at Davis, Sacramento, CA
| | - Clinton B Wright
- From the Evelyn F. McKnight Brain Institute (C. Dong, N.N., M.C., T.R., R.L.S., C.B.W.); Departments of Neurology (R.L.S., C.D., N.N., T.R., C.B.W.), Human Genetics (R.L.S.), and Epidemiology and Public Health Sciences (T.R., R.L.S., C.B.W.); and Neuroscience Program (R.L.S., C.B.W.), Miller School of Medicine, University of Miami, Miami, FL; Departments of Biostatistics (Y.K.C.) and Epidemiology (M.S.V.E.), Mailman School of Public Health, Columbia University, New York, NY; Departments of Neurology (M.S.V.E.) and Psychiatry (Y.S.), the Gertrude H. Sergievsky Center (M.S.V.E., Y.S.), and the Taub Institute for Research on Alzheimer's Disease and the Aging Brain (Y.S.), Columbia University College of Physicians and Surgeons, New York, NY; and Department of Neurology and the Center for Neuroscience (C. DeCarli), University of California at Davis, Sacramento, CA.
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Schaapsmeerders P, van Uden IW, Tuladhar AM, Maaijwee NA, van Dijk EJ, Rutten‐Jacobs LC, Arntz RM, Schoonderwaldt HC, Dorresteijn LD, de Leeuw F, Kessels RP. Ipsilateral hippocampal atrophy is associated with long-term memory dysfunction after ischemic stroke in young adults. Hum Brain Mapp 2015; 36:2432-42. [PMID: 25757914 PMCID: PMC6869088 DOI: 10.1002/hbm.22782] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Revised: 01/16/2015] [Accepted: 02/24/2015] [Indexed: 11/06/2022] Open
Abstract
Memory impairment after stroke in young adults is poorly understood. In elderly stroke survivors memory impairments and the concomitant loss of hippocampal volume are usually explained by coexisting neurodegenerative disease (e.g., amyloid pathology) in interaction with stroke. However, neurodegenerative disease, such as amyloid pathology, is generally absent at young age. Accumulating evidence suggests that infarction itself may cause secondary neurodegeneration in remote areas. Therefore, we investigated the relation between long-term memory performance and hippocampal volume in young patients with first-ever ischemic stroke. We studied all consecutive first-ever ischemic stroke patients, aged 18-50 years, admitted to our academic hospital center between 1980 and 2010. Episodic memory of 173 patients was assessed using the Rey Auditory Verbal Learning Test and the Rey Complex Figure and compared with 87 stroke-free controls. Hippocampal volume was determined using FSL-FIRST, with manual correction. On average 10 years after stroke, patients had smaller ipsilateral hippocampal volumes compared with controls after left-hemispheric stroke (5.4%) and right-hemispheric stroke (7.7%), with most apparent memory dysfunctioning after left-hemispheric stroke. A larger hemispheric stroke was associated with a smaller ipsilateral hippocampal volume (b=-0.003, P<0.0001). Longer follow-up duration was associated with smaller ipsilateral hippocampal volume after left-hemispheric stroke (b=-0.028 ml, P=0.002) and right-hemispheric stroke (b=-0.015 ml, P=0.03). Our results suggest that infarction is associated with remote injury to the hippocampus, which may lower or expedite the threshold for cognitive impairment or even dementia later in life.
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Affiliation(s)
- Pauline Schaapsmeerders
- Department of NeurologyDonders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical CentreNijmegenThe Netherlands
| | - Inge W.M. van Uden
- Department of NeurologyDonders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical CentreNijmegenThe Netherlands
| | - Anil M. Tuladhar
- Department of NeurologyDonders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical CentreNijmegenThe Netherlands
| | - Noortje A.M. Maaijwee
- Department of NeurologyDonders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical CentreNijmegenThe Netherlands
| | - Ewoud J. van Dijk
- Department of NeurologyDonders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical CentreNijmegenThe Netherlands
| | | | - Renate M. Arntz
- Department of NeurologyDonders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical CentreNijmegenThe Netherlands
| | - Hennie C. Schoonderwaldt
- Department of NeurologyDonders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical CentreNijmegenThe Netherlands
| | | | - Frank‐Erik de Leeuw
- Department of NeurologyDonders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical CentreNijmegenThe Netherlands
| | - Roy P.C. Kessels
- Centre for Neuroscience and Centre for CognitionDonders Institute for Brain, Cognition and Behaviour, Radboud UniversityNijmegenThe Netherlands
- Department of Medical PsychologyRadboud University Medical CentreNijmegenThe Netherlands
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134
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Stephan BCM, Tzourio C, Auriacombe S, Amieva H, Dufouil C, Alpérovitch A, Kurth T. Usefulness of data from magnetic resonance imaging to improve prediction of dementia: population based cohort study. BMJ 2015; 350:h2863. [PMID: 26099688 PMCID: PMC4476487 DOI: 10.1136/bmj.h2863] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To determine whether the addition of data derived from magnetic resonance imaging (MRI) of the brain to a model incorporating conventional risk variables improves prediction of dementia over 10 years of follow-up. DESIGN Population based cohort study of individuals aged ≥ 65. SETTING The Dijon magnetic resonance imaging study cohort from the Three-City Study, France. PARTICIPANTS 1721 people without dementia who underwent an MRI scan at baseline and with known dementia status over 10 years' follow-up. MAIN OUTCOME MEASURE Incident dementia (all cause and Alzheimer's disease). RESULTS During 10 years of follow-up, there were 119 confirmed cases of dementia, 84 of which were Alzheimer's disease. The conventional risk model incorporated age, sex, education, cognition, physical function, lifestyle (smoking, alcohol use), health (cardiovascular disease, diabetes, systolic blood pressure), and the apolipoprotein genotype (C statistic for discrimination performance was 0.77, 95% confidence interval 0.71 to 0.82). No significant differences were observed in the discrimination performance of the conventional risk model compared with models incorporating data from MRI including white matter lesion volume (C statistic 0.77, 95% confidence interval 0.72 to 0.82; P=0.48 for difference of C statistics), brain volume (0.77, 0.72 to 0.82; P=0.60), hippocampal volume (0.79, 0.74 to 0.84; P=0.07), or all three variables combined (0.79, 0.75 to 0.84; P=0.05). Inclusion of hippocampal volume or all three MRI variables combined in the conventional model did, however, lead to significant improvement in reclassification measured by using the integrated discrimination improvement index (P=0.03 and P=0.04) and showed increased net benefit in decision curve analysis. Similar results were observed when the outcome was restricted to Alzheimer's disease. CONCLUSIONS Data from MRI do not significantly improve discrimination performance in prediction of all cause dementia beyond a model incorporating demographic, cognitive, health, lifestyle, physical function, and genetic data. There were, however, statistical improvements in reclassification, prognostic separation, and some evidence of clinical utility.
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Affiliation(s)
| | - Christophe Tzourio
- Inserm Research Centre for Epidemiology and Biostatistics (U897), Team Neuroepidemiology, F-33000 Bordeaux, France University of Bordeaux, College of Health Sciences, F-33000 Bordeaux, France
| | - Sophie Auriacombe
- University Hospital, Department of Neurology, Memory Consultation, CMRR, F-33000 Bordeaux, France
| | - Hélène Amieva
- Inserm Research Centre for Epidemiology and Biostatistics (U897), Team Epidemiology and Neuropsychology of Brain Aging, F-33000 Bordeaux, France
| | - Carole Dufouil
- Inserm Research Centre for Epidemiology and Biostatistics (U897), Team Neuroepidemiology, F-33000 Bordeaux, France University of Bordeaux, College of Health Sciences, F-33000 Bordeaux, France
| | - Annick Alpérovitch
- Inserm Research Centre for Epidemiology and Biostatistics (U897), Team Neuroepidemiology, F-33000 Bordeaux, France
| | - Tobias Kurth
- Inserm Research Centre for Epidemiology and Biostatistics (U897), Team Neuroepidemiology, F-33000 Bordeaux, France University of Bordeaux, College of Health Sciences, F-33000 Bordeaux, France
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135
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Reproducibilidad de la valoración cualitativa de la atrofia del lóbulo temporal por RM. RADIOLOGIA 2015; 57:225-8. [DOI: 10.1016/j.rx.2014.04.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 04/16/2014] [Accepted: 04/23/2014] [Indexed: 11/19/2022]
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136
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Wang G, Zhang X, Su Q, Shi J, Caselli RJ, Wang Y. A novel cortical thickness estimation method based on volumetric Laplace-Beltrami operator and heat kernel. Med Image Anal 2015; 22:1-20. [PMID: 25700360 PMCID: PMC4405465 DOI: 10.1016/j.media.2015.01.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 01/22/2015] [Accepted: 01/23/2015] [Indexed: 12/31/2022]
Abstract
Cortical thickness estimation in magnetic resonance imaging (MRI) is an important technique for research on brain development and neurodegenerative diseases. This paper presents a heat kernel based cortical thickness estimation algorithm, which is driven by the graph spectrum and the heat kernel theory, to capture the gray matter geometry information from the in vivo brain magnetic resonance (MR) images. First, we construct a tetrahedral mesh that matches the MR images and reflects the inherent geometric characteristics. Second, the harmonic field is computed by the volumetric Laplace-Beltrami operator and the direction of the steamline is obtained by tracing the maximum heat transfer probability based on the heat kernel diffusion. Thereby we can calculate the cortical thickness information between the point on the pial and white matter surfaces. The new method relies on intrinsic brain geometry structure and the computation is robust and accurate. To validate our algorithm, we apply it to study the thickness differences associated with Alzheimer's disease (AD) and mild cognitive impairment (MCI) on the Alzheimer's Disease Neuroimaging Initiative (ADNI) dataset. Our preliminary experimental results on 151 subjects (51 AD, 45 MCI, 55 controls) show that the new algorithm may successfully detect statistically significant difference among patients of AD, MCI and healthy control subjects. Our computational framework is efficient and very general. It has the potential to be used for thickness estimation on any biological structures with clearly defined inner and outer surfaces.
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Affiliation(s)
- Gang Wang
- School of Information and Electrical Engineering, Ludong University, Yantai, China; School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - Xiaofeng Zhang
- School of Information and Electrical Engineering, Ludong University, Yantai, China
| | - Qingtang Su
- School of Information and Electrical Engineering, Ludong University, Yantai, China
| | - Jie Shi
- School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - Richard J Caselli
- Department of Neurology, Mayo Clinic Arizona, Scottsdale, AZ, USA; Arizona Alzheimer's Consortium, Phoenix, AZ, USA
| | - Yalin Wang
- School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, Tempe, AZ, USA; Arizona Alzheimer's Consortium, Phoenix, AZ, USA.
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137
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Sarria-Estrada S, Acevedo C, Mitjana R, Frascheri L, Siurana S, Auger C, Rovira A. Reproducibility of qualitative assessments of temporal lobe atrophy in MRI studies. RADIOLOGIA 2015. [DOI: 10.1016/j.rxeng.2014.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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138
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Fraser MA, Shaw ME, Cherbuin N. A systematic review and meta-analysis of longitudinal hippocampal atrophy in healthy human ageing. Neuroimage 2015; 112:364-374. [PMID: 25800208 DOI: 10.1016/j.neuroimage.2015.03.035] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Revised: 02/13/2015] [Accepted: 03/14/2015] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION This review aimed to produce hippocampal atrophy rate estimates from healthy ageing studies as well as control samples from observational studies across the adult lifespan which can be used as benchmarks to evaluate abnormal changes in pathological conditions. METHODS The review followed PRISMA guidelines. PUBMED (to February 2014) was searched for longitudinal MRI studies reporting hippocampal atrophy or volume change in cognitively healthy individuals. Titles were screened and non-English, duplicate or irrelevant entries were excluded. Remaining record abstracts were reviewed to identify studies for full text retrieval. Full text was retrieved and screened against inclusion/exclusion criteria. Bibliographies and previous reviews were examined to identify additional studies. Data were summarised using meta-analysis and age, segmentation technique and study type were tested as potential moderators using meta-regression. It was hypothesised that population studies would produce higher atrophy rates than clinical observational studies. RESULTS The systematic search identified 4410 entries and 119 studies were retrieved with 58 failing selection or quality criteria, 30 were excluded as multiple reports and 3 studies were unsuitable for meta-analysis. The remaining 28 studies were included in the meta-analysis, n=3422, 44.65% male, 11,735 person-years of follow-up, mean age was 24.50 to 83 years. Mean total hippocampal atrophy for the entire sample was 0.85% per year (95% CI 0.63, 1.07). Age based atrophy rates were 0.38% per year (CI 0.14, 0.62) for studies with mean age <55 years (n=413), 0.98% (CI 0.27, 1.70) for 55 to <70 years (n=426), and 1.12% (CI 0.86, 1.38) for ≥70 years (n=2583). Meta-regression indicated age was associated with increased atrophy rates of 0.0263% (CI 0.0146, 0.0379) per year and automated segmentation approaches were associated with a reduced atrophy rate of -0.466% (CI -0.841, -0.090). Population studies were not associated with a significant effect on atrophy. Analyses of 11 studies separately measuring left and right hippocampal atrophy (n=1142) provided little evidence of laterality effects. While no study separately reported atrophy by gender, a number tested for gender effects and 2 studies reported higher atrophy in males. CONCLUSIONS Hippocampal atrophy rates increase with age with the largest increases occurring from midlife onwards. Manual segmentation approaches result in higher measured atrophy rates.
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Affiliation(s)
- Mark A Fraser
- Centre for Research on Ageing, Health and Wellbeing, Florey, Building 54, Mills Road, Australian National University, Canberra, ACT 2601, Australia.
| | - Marnie E Shaw
- Centre for Research on Ageing, Health and Wellbeing, Florey, Building 54, Mills Road, Australian National University, Canberra, ACT 2601, Australia
| | - Nicolas Cherbuin
- Centre for Research on Ageing, Health and Wellbeing, Florey, Building 54, Mills Road, Australian National University, Canberra, ACT 2601, Australia
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139
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Prestia A, Caroli A, Wade SK, Flier WM, Ossenkoppele R, Van Berckel B, Barkhof F, Teunissen CE, Wall A, Carter SF, Schöll M, Choo IH, Nordberg A, Scheltens P, Frisoni GB. Prediction of AD dementia by biomarkers following the NIA‐AA and IWG diagnostic criteria in MCI patients from three European memory clinics. Alzheimers Dement 2015; 11:1191-201. [PMID: 25646957 DOI: 10.1016/j.jalz.2014.12.001] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 06/17/2014] [Accepted: 12/02/2014] [Indexed: 02/07/2023]
Affiliation(s)
- Annapaola Prestia
- Laboratory of Epidemiology and Neuroimaging IRCCS Centro San Giovanni di Dio Fatebenefratelli Brescia Italy
| | - Anna Caroli
- Medical Imaging Unit, Biomedical Engineering Department IRCCS Mario Negri Institute for Pharmacological Research Bergamo Italy
| | - Sara K. Wade
- Department of Engineering University of Cambridge Cambridge UK
- Department of Decision Science Bocconi University Milan Italy
| | - Wiesjie M. Flier
- Alzheimer Center and Department of Neurology VU University Medical Center Amsterdam The Netherlands
- Department of Epidemiology & Biostatistics VU University Medical Center Amsterdam The Netherlands
| | - Rik Ossenkoppele
- Alzheimer Center and Department of Neurology VU University Medical Center Amsterdam The Netherlands
- Department of Radiology and Nuclear Medicine and PET research VU University Medical Center Amsterdam The Netherlands
| | - Bart Van Berckel
- Department of Radiology and Nuclear Medicine and PET research VU University Medical Center Amsterdam The Netherlands
| | - Frederik Barkhof
- Department of Radiology and Nuclear Medicine and PET research VU University Medical Center Amsterdam The Netherlands
| | | | - Anders Wall
- PET‐Center, Section of Nuclear Medicine & PET Department of Radiology, Oncology and Radiation Sciences Uppsala University Uppsala Sweden
| | - Stephen F. Carter
- Karolinska Institutet Alzheimer Neurobiology Center Stockholm Sweden
| | - Michael Schöll
- Karolinska Institutet Alzheimer Neurobiology Center Stockholm Sweden
| | - Il Han Choo
- Karolinska Institutet Alzheimer Neurobiology Center Stockholm Sweden
- Department of Neuropsychiatry, School of Medicine Chosun University Gwangju Republic of Korea
| | - Agneta Nordberg
- Karolinska Institutet Alzheimer Neurobiology Center Stockholm Sweden
- Department of Geriatric Medicine Karolinska University Hospital Huddinge Stockholm Sweden
| | - Philip Scheltens
- Alzheimer Center and Department of Neurology VU University Medical Center Amsterdam The Netherlands
| | - Giovanni B. Frisoni
- Laboratory of Epidemiology and Neuroimaging IRCCS Centro San Giovanni di Dio Fatebenefratelli Brescia Italy
- Departments of Internal Medicine and Psychiatry University Hospitals and University of Geneva Geneve Switzerland
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140
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Shi J, Stonnington CM, Thompson PM, Chen K, Gutman B, Reschke C, Baxter LC, Reiman EM, Caselli RJ, Wang Y. Studying ventricular abnormalities in mild cognitive impairment with hyperbolic Ricci flow and tensor-based morphometry. Neuroimage 2015; 104:1-20. [PMID: 25285374 PMCID: PMC4252650 DOI: 10.1016/j.neuroimage.2014.09.062] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 09/20/2014] [Accepted: 09/29/2014] [Indexed: 11/29/2022] Open
Abstract
Mild Cognitive Impairment (MCI) is a transitional stage between normal aging and dementia and people with MCI are at high risk of progression to dementia. MCI is attracting increasing attention, as it offers an opportunity to target the disease process during an early symptomatic stage. Structural magnetic resonance imaging (MRI) measures have been the mainstay of Alzheimer's disease (AD) imaging research, however, ventricular morphometry analysis remains challenging because of its complicated topological structure. Here we describe a novel ventricular morphometry system based on the hyperbolic Ricci flow method and tensor-based morphometry (TBM) statistics. Unlike prior ventricular surface parameterization methods, hyperbolic conformal parameterization is angle-preserving and does not have any singularities. Our system generates a one-to-one diffeomorphic mapping between ventricular surfaces with consistent boundary matching conditions. The TBM statistics encode a great deal of surface deformation information that could be inaccessible or overlooked by other methods. We applied our system to the baseline MRI scans of a set of MCI subjects from the Alzheimer's Disease Neuroimaging Initiative (ADNI: 71 MCI converters vs. 62 MCI stable). Although the combined ventricular area and volume features did not differ between the two groups, our fine-grained surface analysis revealed significant differences in the ventricular regions close to the temporal lobe and posterior cingulate, structures that are affected early in AD. Significant correlations were also detected between ventricular morphometry, neuropsychological measures, and a previously described imaging index based on fluorodeoxyglucose positron emission tomography (FDG-PET) scans. This novel ventricular morphometry method may offer a new and more sensitive approach to study preclinical and early symptomatic stage AD.
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Affiliation(s)
- Jie Shi
- School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, Tempe, AZ, USA
| | | | - Paul M Thompson
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, University of Southern California, Los Angeles, CA, USA
| | - Kewei Chen
- Banner Alzheimer's Institute and Banner Good Samaritan PET Center, Phoenix, AZ, USA
| | - Boris Gutman
- Imaging Genetics Center, Institute for Neuroimaging and Informatics, University of Southern California, Los Angeles, CA, USA
| | - Cole Reschke
- Banner Alzheimer's Institute and Banner Good Samaritan PET Center, Phoenix, AZ, USA
| | - Leslie C Baxter
- Human Brain Imaging Laboratory, Barrow Neurological Institute, Phoenix, AZ, USA
| | - Eric M Reiman
- Banner Alzheimer's Institute and Banner Good Samaritan PET Center, Phoenix, AZ, USA
| | | | - Yalin Wang
- School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, Tempe, AZ, USA.
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141
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Jiang L, Cheng Y, Li Q, Tang Y, Shen Y, Li T, Feng W, Cao X, Wu W, Wang J, Li C. Cross-sectional study of the association of cognitive function and hippocampal volume among healthy elderly adults. SHANGHAI ARCHIVES OF PSYCHIATRY 2014; 26:280-7. [PMID: 25477721 PMCID: PMC4248260 DOI: 10.11919/j.issn.1002-0829.214036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 06/25/2014] [Indexed: 11/03/2022]
Abstract
BACKGROUND Cognitive impairment and dementia among elderly adults is a pressing public health issue in China but research on biomarkers of cognitive decline has been limited. AIM Explore the relationship between multiple domains of cognitive functioning and the volume of the left and right hippocampus in healthy elderly adults. METHODS Structural MRI scanning was performed on 65 community-dwelling healthy participants 65 to 75 years of age using the Siemens 3.0 T Trio Tim with the MPRAGE sequence. The volumes of the left and right hippocampus were determined using Freesurfer software. Cognitive functioning was evaluated using the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). Both unadjusted and adjusted associations between the hippocampal volumes and cognitive functioning were estimated. RESULTS Within this relatively narrow age range, age was significantly associated with most of the cognitive measures assessed in women but was not significantly associated with any of the cognitive measures in men. In both men and women right hippocampal volume was positively associated with delayed memory and left hippocampal volume was positively associated with both immediate memory and delayed memory (though the relationship with delayed memory in women was only at a trend level). After adjustment for age, gender, and years of formal education (the variable that was most strongly associated with all of the cognitive measures), both left hippocampal volume and right hippocampal volume were positively associated with delayed memory, but not with immediate memory. Interestingly, the difference in the volumes of the left and right hippocampi was negatively associated with the score of the RBANS attention subscale, a relationship that was stronger in women than in men. CONCLUSIONS This study confirms previous work about the relationship of hippocampal volume and memory, identifies a possible relationship between attention and the difference in size of the two hippocampi, and suggests that there may be some differences in these relationships by gender.
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Affiliation(s)
- Lijuan Jiang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Cheng
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingwei Li
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yingying Tang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuan Shen
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ting Li
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Feng
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xinyi Cao
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenyuan Wu
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jijun Wang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chunbo Li
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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142
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Yuan X, Guo X, Deng Y, Zhu D, Shang J, Liu H. Chronic intermittent hypoxia-induced neuronal apoptosis in the hippocampus is attenuated by telmisartan through suppression of iNOS/NO and inhibition of lipid peroxidation and inflammatory responses. Brain Res 2014; 1596:48-57. [PMID: 25463026 DOI: 10.1016/j.brainres.2014.11.035] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 11/04/2014] [Accepted: 11/16/2014] [Indexed: 01/14/2023]
Abstract
Obstructive sleep apnea syndrome (OSAS) plays a critical role in the initiation and progression of Alzheimer׳s disease (AD), but little is known about the precise mechanism of OSAS-induced AD. Nitric oxide synthase (NOS) and nitric oxide (NO) are known to play key roles in the development of AD. Several studies have confirmed that an angiotensin II type 1 receptor blocker, telmisartan, beneficially regulates NOS and NO. Here, we examined the neuroprotective effects of telmisartan against hippocampal apoptosis induced by chronic intermittent hypoxia (CIH), the most characteristic pathophysiological change of OSAS. Adult male Sprague Dawley rats were subjected to 8h of intermittent hypoxia per day with or without telmisartan for eight weeks. Neuronal apoptosis in the hippocampal CA1 region, NOS activity, NO content, and the presence of inflammatory agents and radical oxygen species in the hippocampus were determined. The results showed that CIH activated inducible nitric oxide synthase (iNOS), increased NO content, and enhanced lipid peroxidation and inflammatory responses in the hippocampus. Treatment with telmisartan inhibited excessive iNOS and NO generation and reduced lipid peroxidation and inflammatory responses. In addition, telmisartan significantly ameliorated the hippocampal apoptosis induced by CIH. In conclusion, Pre-CIH telmisartan administration attenuated CIH-induced hippocampal apoptosis partly by regulating NOS activity, inhibiting excessive NO generation, and reducing lipid peroxidation and inflammatory responses.
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Affiliation(s)
- Xiao Yuan
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan, 430030, China
| | - Xueling Guo
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan, 430030, China
| | - Yan Deng
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan, 430030, China
| | - Die Zhu
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan, 430030, China
| | - Jin Shang
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan, 430030, China
| | - Huiguo Liu
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan, 430030, China.
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143
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Nguyen JCD, Killcross AS, Jenkins TA. Obesity and cognitive decline: role of inflammation and vascular changes. Front Neurosci 2014; 8:375. [PMID: 25477778 PMCID: PMC4237034 DOI: 10.3389/fnins.2014.00375] [Citation(s) in RCA: 250] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 10/31/2014] [Indexed: 01/02/2023] Open
Abstract
The incidence of obesity in middle age is increasing markedly, and in parallel the prevalence of metabolic disorders including cardiovascular disease and type II diabetes is also rising. Numerous studies have demonstrated that both obesity and metabolic disorders are associated with poorer cognitive performance, cognitive decline, and dementia. In this review we discuss the effects of obesity on cognitive performance, including both clinical and preclinical observations, and discuss some of the potential mechanisms involved, namely inflammation and vascular and metabolic alterations.
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Affiliation(s)
- Jason C. D. Nguyen
- Discipline of Pharmaceutical Sciences, School of Medical Sciences, Health Innovations Research Institute, RMIT UniversityBundoora, VIC, Australia
| | | | - Trisha A. Jenkins
- Discipline of Pharmaceutical Sciences, School of Medical Sciences, Health Innovations Research Institute, RMIT UniversityBundoora, VIC, Australia
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144
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Gross AL, Sherva R, Mukherjee S, Newhouse S, Kauwe JSK, Munsie LM, Waterston LB, Bennett DA, Jones RN, Green RC, Crane PK. Calibrating longitudinal cognition in Alzheimer's disease across diverse test batteries and datasets. Neuroepidemiology 2014; 43:194-205. [PMID: 25402421 PMCID: PMC4297570 DOI: 10.1159/000367970] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 08/23/2014] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND We sought to identify optimal approaches by calibrating longitudinal cognitive performance across studies with different neuropsychological batteries. METHODS We examined four approaches to calibrate cognitive performance in nine longitudinal studies of Alzheimer's disease (AD) (n = 10,875): (1) common test, (2) standardize and average available tests, (3) confirmatory factor analysis (CFA) with continuous indicators, and (4) CFA with categorical indicators. To compare precision, we determined the minimum sample sizes needed to detect 25% cognitive decline with 80% power. To compare criterion validity, we correlated cognitive change from each approach with 6-year changes in average cortical thickness and hippocampal volume using available MRI data from the AD Neuroimaging Initiative. RESULTS CFA with categorical indicators required the smallest sample size to detect 25% cognitive decline with 80% power (n = 232) compared to common test (n = 277), standardize-and-average (n = 291), and CFA with continuous indicators (n = 315) approaches. Associations with changes in biomarkers changes were the strongest for CFA with categorical indicators. CONCLUSIONS CFA with categorical indicators demonstrated greater power to detect change and superior criterion validity compared to other approaches. It has wide applicability to directly compare cognitive performance across studies, making it a good way to obtain operational phenotypes for genetic analyses of cognitive decline among people with AD.
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Affiliation(s)
- Alden L Gross
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Md., USA
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145
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Shi J, Leporé N, Gutman BA, Thompson PM, Baxter LC, Caselli RJ, Wang Y. Genetic influence of apolipoprotein E4 genotype on hippocampal morphometry: An N = 725 surface-based Alzheimer's disease neuroimaging initiative study. Hum Brain Mapp 2014; 35:3903-18. [PMID: 24453132 PMCID: PMC4269525 DOI: 10.1002/hbm.22447] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 11/23/2013] [Accepted: 11/26/2013] [Indexed: 01/12/2023] Open
Abstract
The apolipoprotein E (APOE) e4 allele is the most prevalent genetic risk factor for Alzheimer's disease (AD). Hippocampal volumes are generally smaller in AD patients carrying the e4 allele compared to e4 noncarriers. Here we examined the effect of APOE e4 on hippocampal morphometry in a large imaging database-the Alzheimer's Disease Neuroimaging Initiative (ADNI). We automatically segmented and constructed hippocampal surfaces from the baseline MR images of 725 subjects with known APOE genotype information including 167 with AD, 354 with mild cognitive impairment (MCI), and 204 normal controls. High-order correspondences between hippocampal surfaces were enforced across subjects with a novel inverse consistent surface fluid registration method. Multivariate statistics consisting of multivariate tensor-based morphometry (mTBM) and radial distance were computed for surface deformation analysis. Using Hotelling's T(2) test, we found significant morphological deformation in APOE e4 carriers relative to noncarriers in the entire cohort as well as in the nondemented (pooled MCI and control) subjects, affecting the left hippocampus more than the right, and this effect was more pronounced in e4 homozygotes than heterozygotes. Our findings are consistent with previous studies that showed e4 carriers exhibit accelerated hippocampal atrophy; we extend these findings to a novel measure of hippocampal morphometry. Hippocampal morphometry has significant potential as an imaging biomarker of early stage AD.
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Affiliation(s)
- Jie Shi
- School of Computing, Informatics, and Decision Systems Engineering, Arizona State UniversityTempeArizona
| | - Natasha Leporé
- Department of RadiologyChildren's Hospital Los AngelesLos AngelesCalifornia
| | - Boris A. Gutman
- Imaging Genetics CenterInstitute for Neuroimaging and InformaticsUniversity of Southern CaliforniaLos AngelesCalifornia
| | - Paul M. Thompson
- Department of NeurologyImaging Genetics CenterLaboratory of Neuro ImagingUCLA School of MedicineLos AngelesCalifornia
- Department of Psychiatry and Biobehavioral SciencesSemel Institute, UCLA School of MedicineLos AngelesCalifornia
| | - Leslie C. Baxter
- Human Brain Imaging Laboratory, Barrow Neurological InstitutePhoenixArizona
| | | | - Yalin Wang
- School of Computing, Informatics, and Decision Systems Engineering, Arizona State UniversityTempeArizona
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146
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Dubois B, Feldman HH, Jacova C, Hampel H, Molinuevo JL, Blennow K, DeKosky ST, Gauthier S, Selkoe D, Bateman R, Cappa S, Crutch S, Engelborghs S, Frisoni GB, Fox NC, Galasko D, Habert MO, Jicha GA, Nordberg A, Pasquier F, Rabinovici G, Robert P, Rowe C, Salloway S, Sarazin M, Epelbaum S, de Souza LC, Vellas B, Visser PJ, Schneider L, Stern Y, Scheltens P, Cummings JL. Advancing research diagnostic criteria for Alzheimer's disease: the IWG-2 criteria. Lancet Neurol 2014; 13:614-29. [PMID: 24849862 DOI: 10.1016/s1474-4422(14)70090-0] [Citation(s) in RCA: 2201] [Impact Index Per Article: 220.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In the past 8 years, both the International Working Group (IWG) and the US National Institute on Aging-Alzheimer's Association have contributed criteria for the diagnosis of Alzheimer's disease (AD) that better define clinical phenotypes and integrate biomarkers into the diagnostic process, covering the full staging of the disease. This Position Paper considers the strengths and limitations of the IWG research diagnostic criteria and proposes advances to improve the diagnostic framework. On the basis of these refinements, the diagnosis of AD can be simplified, requiring the presence of an appropriate clinical AD phenotype (typical or atypical) and a pathophysiological biomarker consistent with the presence of Alzheimer's pathology. We propose that downstream topographical biomarkers of the disease, such as volumetric MRI and fluorodeoxyglucose PET, might better serve in the measurement and monitoring of the course of disease. This paper also elaborates on the specific diagnostic criteria for atypical forms of AD, for mixed AD, and for the preclinical states of AD.
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Affiliation(s)
- Bruno Dubois
- Centre des Maladies Cognitives et Comportementales, Institut du Cerveau et de la Moelle épinière, Paris, France; Université Pierre et Marie Curie-Paris 6, AP-HP, Hôpital de la Salpêtrière, Paris, France.
| | - Howard H Feldman
- Division of Neurology, University of British Columbia and Vancouver Coastal Health, Vancouver, BC, Canada
| | - Claudia Jacova
- UBC Division of Neurology, S152 UBC Hospital, BC, Canada
| | - Harald Hampel
- Centre des Maladies Cognitives et Comportementales, Institut du Cerveau et de la Moelle épinière, Paris, France; Université Pierre et Marie Curie-Paris 6, AP-HP, Hôpital de la Salpêtrière, Paris, France
| | - José Luis Molinuevo
- Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Service, IDIBAPS Hospital Clinici Universitari, Barcelona, Spain; BarcelonaBeta Brain Research Centre, Fundació Pasqual Maragall, Barcelona, Spain
| | - Kaj Blennow
- Clinical Neurochemistry Laboratory, Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy at University of Gothenburg, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Steven T DeKosky
- Department of Neurology, University of Virginia, Charlottesville, VA, USA
| | - Serge Gauthier
- McGill Center for Studies in Aging, Douglas Hospital, Montreal, Quebec, QC, Canada
| | - Dennis Selkoe
- Harvard Medical School Center for Neurologic Diseases, Brigham and Women's Hospital, Boston, MA, USA
| | - Randall Bateman
- Washington University School of Medicine, St Louis, Missouri, MO, USA
| | - Stefano Cappa
- Vita-Salute San Raffaele University, Milan, Italy; Department of Clinical Neurosciences, Cognitive Neurorehabilitation, Milan, Italy
| | - Sebastian Crutch
- Dementia Research Centre, Department of Neurodegeneration, Institute of Neurology, University College London, London, UK; Dementia Research Centre, National Hospital, London, UK
| | - Sebastiaan Engelborghs
- Department of Neurology and Memory Clinic, Hospital Network Antwerp (ZNA), Middelheim and Hoge Beuken, Antwerp, Belgium; Reference Centre for Biological Markers of Dementia, Institute Born-Bunge, University of Antwerp, Antwerp, Belgium
| | - Giovanni B Frisoni
- Hopitaux Universitaires et Université de Genève, Geneva, Switzerland; IRCCS Fatebenefratelli, Brescia, Italy; HUG Belle-Idée, bâtiment les Voirons, Chêne-Bourg, France
| | - Nick C Fox
- Dementia Research Centre, Department of Neurodegeneration, Institute of Neurology, University College London, London, UK
| | - Douglas Galasko
- Department of Neurosciences, -University of California, San Diego, CA, USA
| | - Marie-Odile Habert
- INSERM UMR, Paris, France; AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Médecine Nucléaire, Paris, France
| | - Gregory A Jicha
- University of Kentucky Alzheimer's Disease Center, Lexington, KY, USA
| | - Agneta Nordberg
- Karolinska Institutet, Karolinska University Hospital Huddinge, Alzheimer Neurobiology Center, Stockholm, Sweden
| | - Florence Pasquier
- Université Lille Nord de France, Lille, France; CHRU, Clinique Neurologique, Hôpital Roger Salengro, Lille, France
| | - Gil Rabinovici
- UCSF Memory & Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Philippe Robert
- EA CoBTeK and Memory Center, CHU University of Nice, UNSA, Hôpital de Cimiez 4 av Victoria, Nice, France
| | - Christopher Rowe
- FRACP, Department of Nuclear Medicine and Centre for PET, Austin Health, Heidelberg, Melbourne, VIC, Australia
| | - Stephen Salloway
- Neurology and the Memory and Aging Program, Butler Hospital, Department of Neurology and Psychiatry, The Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Marie Sarazin
- Neurologie de la Mémoire et du Langage, Centre Hospitalier Sainte-Anne, Paris Cedex, France; Université Paris 5, Paris, France
| | - Stéphane Epelbaum
- Centre des Maladies Cognitives et Comportementales, Institut du Cerveau et de la Moelle épinière, Paris, France; Université Pierre et Marie Curie-Paris 6, AP-HP, Hôpital de la Salpêtrière, Paris, France
| | - Leonardo C de Souza
- Centre des Maladies Cognitives et Comportementales, Institut du Cerveau et de la Moelle épinière, Paris, France; Université Pierre et Marie Curie-Paris 6, AP-HP, Hôpital de la Salpêtrière, Paris, France; Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Bruno Vellas
- Gerontopole, Pavillon Junod, University Toulouse 3, Toulouse, France
| | - Pieter J Visser
- Department of Psychiatry and Neuropsychology, Alzheimer Centre Limburg, School of Mental Health and Neuroscience, Maastricht University Medical Centre, Maastricht, Netherlands; Department of Neurology and Alzheimer Center, Amsterdam, Netherlands
| | - Lon Schneider
- Department of Psychiatry, Neurology, and Gerontology, Keck School of Medicine of USC, Los Angeles, CA, USA
| | - Yaakov Stern
- Cognitive Neuroscience Division of the Taub Institute, Presbyterian Hospital, New York, NY, USA
| | - Philip Scheltens
- Alzheimer Centrum Vrije Universiteit Medical Center, VU University, Amsterdam, Netherlands
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147
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Hippocampal atrophy in people with memory deficits: results from the population-based IPREA study. Int Psychogeriatr 2014; 26:1067-81. [PMID: 24524645 DOI: 10.1017/s1041610213002627] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Clinical studies have shown that hippocampal atrophy is present before dementia in people with memory deficits and can predict dementia development. The question remains whether this association holds in the general population. This is of interest for the possible use of hippocampal atrophy to screen population for preventive interventions. The aim of this study was to assess hippocampal volume and shape abnormalities in elderly adults with memory deficits in a cross-sectional population-based study. METHODS We included individuals participating in the Italian Project on the Epidemiology of Alzheimer Disease (IPREA) study: 75 cognitively normal individuals (HC), 31 individuals with memory deficits (MEM), and 31 individuals with memory deficits not otherwise specified (MEMnos). Hippocampal volumes and shape were extracted through manual tracing and the growing and adaptive meshes (GAMEs) shape-modeling algorithm. We investigated between-group differences in hippocampal volume and shape, and correlations with memory deficits. RESULTS In MEM participants, hippocampal volumes were significantly smaller than in HC and were mildly associated with worse memory scores. Memory-associated shape changes mapped to the anterior hippocampus. Shape-based analysis detected no significant difference between MEM and HC, while MEMnos showed shape changes in the posterior hippocampus compared with HC and MEM groups. CONCLUSIONS These findings support the discriminant validity of hippocampal volumetry as a biomarker of memory impairment in the general population. The detection of shape changes in MEMnos but not in MEM participants suggests that shape-based biomarkers might lack sensitivity to detect Alzheimer's-like pathology in the general population.
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148
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Keuken MC, Bazin PL, Crown L, Hootsmans J, Laufer A, Müller-Axt C, Sier R, van der Putten EJ, Schäfer A, Turner R, Forstmann BU. Quantifying inter-individual anatomical variability in the subcortex using 7 T structural MRI. Neuroimage 2014; 94:40-46. [PMID: 24650599 DOI: 10.1016/j.neuroimage.2014.03.032] [Citation(s) in RCA: 166] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Revised: 02/28/2014] [Accepted: 03/10/2014] [Indexed: 01/07/2023] Open
Abstract
Functional magnetic resonance imaging (MRI) data are usually registered into standard anatomical space. However, standard atlases, such as LPBA40, the Harvard-Oxford atlas, FreeSurfer, and the Jülich cytoarchitectonic maps all lack important detailed information about small subcortical structures like the substantia nigra and subthalamic nucleus. Here we introduce a new subcortical probabilistic atlas based on ultra-high resolution in-vivo anatomical imaging from 7 T MRI. The atlas includes six important but elusive subcortical nuclei: the striatum, the globus pallidus internal and external segment (GPi/e), the subthalamic nucleus, the substantia nigra, and the red nucleus. With a sample of 30 young subjects and carefully cross-validated delineation protocols, our atlas is able to capture the anatomical variability within healthy populations for each of the included structures at an unprecedented level of detail. All the generated probabilistic atlases are registered to MNI standard space and are publicly available.
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Affiliation(s)
- M C Keuken
- Cognitive Science Center Amsterdam, Amsterdam, The Netherlands; Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - P-L Bazin
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - L Crown
- Cognitive Science Center Amsterdam, Amsterdam, The Netherlands
| | - J Hootsmans
- Cognitive Science Center Amsterdam, Amsterdam, The Netherlands
| | - A Laufer
- Cognitive Science Center Amsterdam, Amsterdam, The Netherlands
| | - C Müller-Axt
- Cognitive Science Center Amsterdam, Amsterdam, The Netherlands
| | - R Sier
- Cognitive Science Center Amsterdam, Amsterdam, The Netherlands
| | | | - A Schäfer
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - R Turner
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - B U Forstmann
- Cognitive Science Center Amsterdam, Amsterdam, The Netherlands; Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
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149
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Hu Z, Wu L, Jia J, Han Y. Advances in longitudinal studies of amnestic mild cognitive impairment and Alzheimer's disease based on multi-modal MRI techniques. Neurosci Bull 2014; 30:198-206. [PMID: 24574084 DOI: 10.1007/s12264-013-1407-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 12/21/2013] [Indexed: 10/25/2022] Open
Abstract
Amnestic mild cognitive impairment (aMCI) is a prodromal stage of Alzheimer's disease (AD), and 75%-80% of aMCI patients finally develop AD. So, early identification of patients with aMCI or AD is of great significance for prevention and intervention. According to cross-sectional studies, it is known that the hippocampus, posterior cingulate cortex, and corpus callosum are key areas in studies based on structural MRI (sMRI), functional MRI (fMRI), and diffusion tensor imaging (DTI) respectively. Recently, longitudinal studies using each MRI modality have demonstrated that the neuroimaging abnormalities generally involve the posterior brain regions at the very beginning and then gradually affect the anterior areas during the progression of aMCI to AD. However, it is not known whether follow-up studies based on multi-modal neuroimaging techniques (e.g., sMRI, fMRI, and DTI) can help build effective MRI models that can be directly applied to the screening and diagnosis of aMCI and AD. Thus, in the future, large-scale multi-center follow-up studies are urgently needed, not only to build an MRI diagnostic model that can be used on a single person, but also to evaluate the variability and stability of the model in the general population. In this review, we present longitudinal studies using each MRI modality separately, and then discuss the future directions in this field.
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Affiliation(s)
- Zhongjie Hu
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, Beijing, 100053, China
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150
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Tokola AM, Salli EK, Åberg LE, Autti TH. Hippocampal volumes in juvenile neuronal ceroid lipofuscinosis: a longitudinal magnetic resonance imaging study. Pediatr Neurol 2014; 50:158-63. [PMID: 24411222 DOI: 10.1016/j.pediatrneurol.2013.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 10/14/2013] [Accepted: 10/28/2013] [Indexed: 11/27/2022]
Abstract
BACKGROUND Juvenile neuronal ceroid lipofuscinosis is an inherited, autosomal recessive, progressive, neurodegenerative disorder of childhood. It belongs to the lysosomal storage diseases, which manifest with loss of vision, seizures, and loss of cognitive and motor functions, and lead to premature death. Imaging studies have shown cerebral and cerebellar atrophy, yet no previous studies evaluating particularly hippocampal atrophy have been published. This study evaluates the hippocampal volumes in adolescent juvenile neuronal ceroid lipofuscinosis patients in a controlled 5-year follow-up magnetic resonance imaging study. METHODS Hippocampal volumes of eight patients (three female, five male) and 10 healthy age- and sex-matched control subjects were measured from two repeated magnetic resonance imaging examinations. Three male patients did not have controls and were excluded from the statistics. In the patient group, the first examination was performed at the mean age of 12.2 years and the second examination at the mean age of 17.3 years. In the control group, the mean ages at the time of examinations were 12.5 years and 19.3 years. RESULTS Progressive hippocampal atrophy was found in the patient group. The mean total hippocampal volume decreased by 0.85 cm³ during the 5-year follow-up in the patient group, which corresponds to a 3.3% annual rate of volume loss. The whole brain volume decreased by 2.9% per year. The observed annual rate of hippocampal atrophy also exceeded the previously reported 2.4% annual loss of total gray matter volume in juvenile neuronal ceroid lipofuscinosis patients. CONCLUSIONS These data suggest that progressive hippocampal atrophy is one of the characteristic features of brain atrophy in juvenile neuronal ceroid lipofuscinosis in adolescence.
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Affiliation(s)
- Anna M Tokola
- Department of Radiology, HUS Medical Imaging Center, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland.
| | - Eero K Salli
- Department of Radiology, HUS Medical Imaging Center, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland
| | - Laura E Åberg
- Clinic for the Intellectually Disabled, Department of Social Services and Health Care, City of Helsinki, Helsinki, Finland
| | - Taina H Autti
- Department of Radiology, HUS Medical Imaging Center, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland
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