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You W, Li Q, Chen L, He N, Li Y, Long F, Wang Y, Chen Y, McNamara RK, Sweeney JA, DelBello MP, Gong Q, Li F. Common and distinct cortical thickness alterations in youth with autism spectrum disorder and attention-deficit/hyperactivity disorder. BMC Med 2024; 22:92. [PMID: 38433204 PMCID: PMC10910790 DOI: 10.1186/s12916-024-03313-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 02/22/2024] [Indexed: 03/05/2024] Open
Abstract
BACKGROUND Autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) are neurodevelopmental disorders with overlapping behavioral features and genetic etiology. While brain cortical thickness (CTh) alterations have been reported in ASD and ADHD separately, the degree to which ASD and ADHD are associated with common and distinct patterns of CTh changes is unclear. METHODS We searched PubMed, Web of Science, Embase, and Science Direct from inception to 8 December 2023 and included studies of cortical thickness comparing youth (age less than 18) with ASD or ADHD with typically developing controls (TDC). We conducted a comparative meta-analysis of vertex-based studies to identify common and distinct CTh alterations in ASD and ADHD. RESULTS Twelve ASD datasets involving 458 individuals with ASD and 10 ADHD datasets involving 383 individuals with ADHD were included in the analysis. Compared to TDC, ASD showed increased CTh in bilateral superior frontal gyrus, left middle temporal gyrus, and right superior parietal lobule (SPL) and decreased CTh in right temporoparietal junction (TPJ). ADHD showed decreased CTh in bilateral precentral gyri, right postcentral gyrus, and right TPJ relative to TDC. Conjunction analysis showed both disorders shared reduced TPJ CTh located in default mode network (DMN). Comparative analyses indicated ASD had greater CTh in right SPL and TPJ located in dorsal attention network and thinner CTh in right TPJ located in ventral attention network than ADHD. CONCLUSIONS These results suggest shared thinner TPJ located in DMN is an overlapping neurobiological feature of ASD and ADHD. This alteration together with SPL alterations might be related to altered biological motion processing in ASD, while abnormalities in sensorimotor systems may contribute to behavioral control problems in ADHD. The disorder-specific thinner TPJ located in disparate attention networks provides novel insight into distinct symptoms of attentional deficits associated with the two neurodevelopmental disorders. TRIAL REGISTRATION PROSPERO CRD42022370620. Registered on November 9, 2022.
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Affiliation(s)
- Wanfang You
- Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Lmaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, Sichuan, People's Republic of China
- Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang, People's Republic of China
| | - Qian Li
- Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Lmaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, Sichuan, People's Republic of China
| | - Lizhou Chen
- Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Lmaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, Sichuan, People's Republic of China
| | - Ning He
- Department of Psychiatry, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Yuanyuan Li
- Department of Psychiatry, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Fenghua Long
- Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Lmaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, Sichuan, People's Republic of China
| | - Yaxuan Wang
- Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Lmaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, Sichuan, People's Republic of China
| | - Yufei Chen
- Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Lmaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, Sichuan, People's Republic of China
| | - Robert K McNamara
- Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, OH, 45219, USA
| | - John A Sweeney
- Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Lmaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, OH, 45219, USA
| | - Melissa P DelBello
- Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, OH, 45219, USA
| | - Qiyong Gong
- Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Lmaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, Sichuan, People's Republic of China
| | - Fei Li
- Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Lmaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China.
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, Sichuan, People's Republic of China.
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Rogge B, Heldmann M, Chatterjee K, Moran C, Göttlich M, Uter J, Wagner-Altendorf TA, Steinhardt J, Brabant G, Münte TF, Cirkel A. Changes in brain structure in subjects with resistance to thyroid hormone due to THRB mutations. Thyroid Res 2023; 16:34. [PMID: 37592301 PMCID: PMC10433577 DOI: 10.1186/s13044-023-00176-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 07/26/2023] [Indexed: 08/19/2023] Open
Abstract
BACKGROUND Being critical for brain development and neurocognitive function thyroid hormones may have an effect on behaviour and brain structure. Our exploratory study aimed to delineate the influence of mutations in the thyroid hormone receptor (TR) ß gene on brain structure. METHODS High-resolution 3D T1-weighted images were acquired in 21 patients with a resistance to thyroid hormone ß (RTHß) in comparison to 21 healthy matched-controls. Changes in grey and white matter, as well as cortical thickness were evaluated using voxel-based morphometry (VBM) and diffusion tensor imaging (DTI). RESULTS RTHß patients showed elevated circulating fT4 & fT3 with normal TSH concentrations, whereas controls showed normal thyroid hormone levels. RTHß patients revealed significantly higher scores in a self-rating questionnaire for attention deficit hyperactivity disorder (ADHD). Imaging revealed alterations of the corticospinal tract, increased cortical thickness in bilateral superior parietal cortex and decreased grey matter volume in bilateral inferior temporal cortex and thalamus. CONCLUSION RTHb patients exhibited structural changes in multiple brain areas. Whether these structural changes are causally linked to the abnormal behavioral profile of RTHß which is similar to ADHD, remains to be determined.
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Affiliation(s)
- Berenike Rogge
- Department of Neurology, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Marcus Heldmann
- Department of Neurology, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
- Department of Psychology II, University of Lübeck, Lübeck, Germany
| | - Krishna Chatterjee
- Wellcome-MRC Institute of Metabolic Science, University of Cambridge, Cambridge, UK
| | - Carla Moran
- Beacon Hospital, Dublin, Ireland
- St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Martin Göttlich
- Department of Psychology II, University of Lübeck, Lübeck, Germany
| | - Jan Uter
- Department of Neurology, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | | | - Julia Steinhardt
- Department of Neurology, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - Georg Brabant
- Department of Internal Medicine I, University of Lübeck, Lübeck, Germany
| | - Thomas F Münte
- Department of Neurology, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
- Department of Psychology II, University of Lübeck, Lübeck, Germany
| | - Anna Cirkel
- Department of Neurology, University of Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.
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Lee IO, Skuse DH, Constable PA, Marmolejo-Ramos F, Olsen LR, Thompson DA. The electroretinogram b-wave amplitude: a differential physiological measure for Attention Deficit Hyperactivity Disorder and Autism Spectrum Disorder. J Neurodev Disord 2022; 14:30. [PMID: 35524181 PMCID: PMC9077889 DOI: 10.1186/s11689-022-09440-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/12/2022] [Indexed: 12/02/2022] Open
Abstract
Background Attention Deficit Hyperactivity Disorder (ADHD) is the most prevalent childhood neurodevelopmental disorder. It shares some genetic risk with Autism Spectrum Disorder (ASD), and the conditions often occur together. Both are potentially associated with abnormal glutamate and GABA neurotransmission, which can be modelled by measuring the synaptic activity in the retina with an electroretinogram (ERG). Reduction of retinal responses in ASD has been reported, but little is known about retinal activity in ADHD. In this study, we compared the light-adapted ERGs of individuals with ADHD, ASD and controls to investigate whether retinal responses differ between these neurodevelopmental conditions. Methods Full field light-adapted ERGs were recorded from 15 ADHD, 57 ASD (without ADHD) and 59 control participants, aged from 5.4 to 27.3 years old. A Troland protocol was used with a random series of nine flash strengths from −0.367 to 1.204 log photopic cd.s.m−2. The time-to-peak and amplitude of the a- and b-waves and the parameters of the Photopic Negative Response (PhNR) were compared amongst the three groups of participants, using generalised estimating equations. Results Statistically significant elevations of the ERG b-wave amplitudes, PhNR responses and faster timings of the b-wave time-to-peak were found in those with ADHD compared with both the control and ASD groups. The greatest elevation in the b-wave amplitudes associated with ADHD were observed at 1.204 log phot cd.s.m−2 flash strength (p < .0001), at which the b-wave amplitude in ASD was significantly lower than that in the controls. Using this measure, ADHD could be distinguished from ASD with an area under the curve of 0.88. Conclusions The ERG b-wave amplitude appears to be a distinctive differential feature for both ADHD and ASD, which produced a reversed pattern of b-wave responses. These findings imply imbalances between glutamate and GABA neurotransmission which primarily regulate the b-wave formation. Abnormalities in the b-wave amplitude could provisionally serve as a biomarker for both neurodevelopmental conditions. Supplementary Information The online version contains supplementary material available at 10.1186/s11689-022-09440-2.
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Affiliation(s)
- Irene O Lee
- Behavioural and Brain Sciences Unit, Population Policy and Practice Programme, UCL Great Ormond Street Institute of Child Health, University College London, London, UK.
| | - David H Skuse
- Behavioural and Brain Sciences Unit, Population Policy and Practice Programme, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Paul A Constable
- Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Adelaide, South Australia, Australia
| | - Fernando Marmolejo-Ramos
- Centre for Change and Complexity in Learning, University of South Australia, Adelaide, Australia
| | - Ludvig R Olsen
- Department of Molecular Medicine (MOMA), Aarhus University, Aarhus, Denmark
| | - Dorothy A Thompson
- The Tony Kriss Visual Electrophysiology Unit, Clinical and Academic Department of Ophthalmology, Sight and Sound Centre, Great Ormond Street Hospital for Children NHS Trust, London, UK.,UCL Great Ormond Street Institute of Child Health, University College London, London, UK
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4
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Li X, Jiang Y, Wang W, Liu X, Li Z. Brain morphometric abnormalities in boys with attention-deficit/hyperactivity disorder revealed by sulcal pits-based analyses. CNS Neurosci Ther 2021; 27:299-307. [PMID: 32762149 PMCID: PMC7871795 DOI: 10.1111/cns.13445] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 07/19/2020] [Accepted: 07/20/2020] [Indexed: 01/05/2023] Open
Abstract
AIM Attention-deficit/hyperactivity disorder (ADHD) is a common neurodevelopmental disorder associated with widespread brain morphological abnormalities. Here, we utilized a sulcal pits-based method to provide new insight into the atypical cortical folding morphology in ADHD. METHODS Sulcal pits, the locally deepest points in each fold, were first extracted from magnetic resonance imaging data of 183 boys with ADHD (10.62 ± 1.96 years) and 167 age- and gender-matched typically developing controls (10.70 ± 1.73 years). Then, the geometrical properties of sulcal pits were statistically compared between ADHD and controls. RESULTS Our results demonstrated that the number of sulcal pits was reduced and confined to the superficial secondary sulci in the ADHD group relative to controls (P < .05). We also found that ADHD boys were associated with significantly increased pit depth in the left superior frontal junction, circular insular sulcus, right inferior frontal junction, and bilateral cingulate sulcus, as well as significantly decreased pit depth in the bilateral orbital sulcus (P < .05, corrected). CONCLUSION The experimental findings reveal atypical sulcal anatomy in boys with ADHD and support the feasibility of sulcal pits as anatomic landmarks for disease diagnosis.
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Affiliation(s)
- Xin‐Wei Li
- Chongqing Engineering Research Center of Medical Electronics and Information TechnologyChongqing University of Posts and TelecommunicationsChongqingChina
- Chongqing Engineering Laboratory of Digital Medical Equipment and SystemsChongqing University of Posts and TelecommunicationsChongqingChina
| | - Yu‐Hao Jiang
- Chongqing Engineering Research Center of Medical Electronics and Information TechnologyChongqing University of Posts and TelecommunicationsChongqingChina
- Chongqing Engineering Laboratory of Digital Medical Equipment and SystemsChongqing University of Posts and TelecommunicationsChongqingChina
| | - Wei Wang
- Chongqing Engineering Research Center of Medical Electronics and Information TechnologyChongqing University of Posts and TelecommunicationsChongqingChina
- Chongqing Engineering Laboratory of Digital Medical Equipment and SystemsChongqing University of Posts and TelecommunicationsChongqingChina
| | - Xiao‐Xue Liu
- Chongqing Engineering Research Center of Medical Electronics and Information TechnologyChongqing University of Posts and TelecommunicationsChongqingChina
- Chongqing Engineering Laboratory of Digital Medical Equipment and SystemsChongqing University of Posts and TelecommunicationsChongqingChina
| | - Zhang‐Yong Li
- Chongqing Engineering Research Center of Medical Electronics and Information TechnologyChongqing University of Posts and TelecommunicationsChongqingChina
- Chongqing Engineering Laboratory of Digital Medical Equipment and SystemsChongqing University of Posts and TelecommunicationsChongqingChina
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5
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Schäfer T, Mann C, Bletsch A, Zimmermann J, Seelemeyer H, Herøy N, Ecker C. Die Kortexdicke bei Autismus-Spektrum-Störung wird moduliert durch eine komorbide Aufmerksamkeitsdefizit-/Hyperaktivitätsstörung. KINDHEIT UND ENTWICKLUNG 2021. [DOI: 10.1026/0942-5403/a000329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Zusammenfassung. Theoretischer Hintergrund: Autismus-Spektrum-Störung (ASS) ist eine neuronale Entwicklungsstörung und tritt häufig gemeinsam mit der Aufmerksamkeitsdefizit-/Hyperaktivitätsstörung (ADHS) auf. Bisher wurde jedoch nur selten untersucht, wie sich Personen mit ASS von Personen mit ASS und komorbider ADHS, sowie von einer gesunden Kontrollgruppe (KG) auf neuroanatomischer Ebene unterscheiden. Fragestellung: In der vorliegenden Studie wurde an 101 Jugendlichen untersucht, ob die Kortexdicke bei ASS von komorbid auftretenden ADHS-Symptomen moduliert wird. Methode: Für jeden Proband_innen berechneten wir auf Basis struktureller T1-gewichteter Magnetresonanztomographie Scans die Kortexdicke an jedem Punkt der Gehirnoberfläche. Ergebnisse: Es zeigten sich signifikante Unterschiede zwischen autistischen Proband_innen mit und ohne ADHS im posterioren Cingulum, der Lingualwindung sowie dem Precuneus der linken Hemisphäre. Diskussion und Schlussfolgerung: Die Ergebnisse implizieren, dass die kortikale Dicke bei ASS durch das gleichzeitige Vorliegen einer ADHS moduliert wird. Diese Erkenntnisse könnten in zukünftigen Studien zur Untersuchung neuroanatomischer Ursachen von ASS und der Unterteilung von Proband_innen in homogenere Subgruppen von Nutzen sein und so der zukünftigen Entwicklung individualisierter Therapien dienen.
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Affiliation(s)
- Tim Schäfer
- Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes- und Jugendalters, Universitätsklinikum,Goethe-Universität Frankfurt am Main
- Brain Imaging Center, Goethe-Universität Frankfurt am Main
| | - Caroline Mann
- Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes- und Jugendalters, Universitätsklinikum,Goethe-Universität Frankfurt am Main
- Brain Imaging Center, Goethe-Universität Frankfurt am Main
| | - Anke Bletsch
- Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes- und Jugendalters, Universitätsklinikum,Goethe-Universität Frankfurt am Main
- Brain Imaging Center, Goethe-Universität Frankfurt am Main
| | - Jennifer Zimmermann
- Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes- und Jugendalters, Universitätsklinikum,Goethe-Universität Frankfurt am Main
- Brain Imaging Center, Goethe-Universität Frankfurt am Main
| | - Hanna Seelemeyer
- Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes- und Jugendalters, Universitätsklinikum,Goethe-Universität Frankfurt am Main
- Brain Imaging Center, Goethe-Universität Frankfurt am Main
| | - Njål Herøy
- Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes- und Jugendalters, Universitätsklinikum,Goethe-Universität Frankfurt am Main
- Brain Imaging Center, Goethe-Universität Frankfurt am Main
| | - Christine Ecker
- Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes- und Jugendalters, Universitätsklinikum,Goethe-Universität Frankfurt am Main
- Brain Imaging Center, Goethe-Universität Frankfurt am Main
- Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience,King’s College, London
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Vetter NC, Backhausen LL, Buse J, Roessner V, Smolka MN. Altered brain morphology in boys with attention deficit hyperactivity disorder with and without comorbid conduct disorder/oppositional defiant disorder. Hum Brain Mapp 2020; 41:973-983. [PMID: 31691449 PMCID: PMC7267962 DOI: 10.1002/hbm.24853] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 10/15/2019] [Accepted: 10/21/2019] [Indexed: 01/01/2023] Open
Abstract
About 50% of attention deficit hyperactivity disorder (ADHD) patients suffer from comorbidity with oppositional defiant disorder/conduct disorder (ODD/CD). Most previous studies on structural morphology did not differentiate between pure (ADHD-only) and comorbid ADHD (ADHD+ODD/CD). Therefore, we aimed to investigate the structural profile of ADHD-only versus ADHD+ODD/CD spanning the indices subcortical and cortical volume, cortical thickness, and surface area. We predicted a reduced total gray matter, striatal, and cerebellar volume in both patient groups and a reduced amygdalar and hippocampal volume for ADHD+ODD/CD. We also explored alterations in prefrontal volume, thickness, and surface area. We acquired structural images from an adolescent sample ranging from 11 to 17 years, matched with regard to age, pubertal status, and IQ-including 36 boys with ADHD-only, 26 boys with ADHD+ODD/CD, and 30 typically developing (TD) boys. We analyzed structural data with FreeSurfer. We found reductions in total gray matter and total surface area for both patient groups. Boys with ADHD+ODD/CD had a thicker cortex than the other groups in a right rostral middle frontal cluster, which was related to stronger ODD/CD symptoms, even when controlling for ADHD symptoms. No group differences in local cortical volume or surface area emerged. We demonstrate the necessity to carefully differentiate between ADHD and ADHD+ODD/CD. The increased rostral middle frontal thickness might hint at a delayed adolescent cortical thinning in ADHD+ODD/CD. Patients with the double burden ADHD and ODD or CD seem to be even more affected than patients with pure ADHD.
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Affiliation(s)
- Nora C. Vetter
- Department of Psychiatry and Neuroimaging CenterTechnische Universität DresdenDresdenGermany
- Department of Child and Adolescent PsychiatryFaculty of Medicine of the Technische Universität DresdenDresdenGermany
| | - Lea L. Backhausen
- Department of Child and Adolescent PsychiatryFaculty of Medicine of the Technische Universität DresdenDresdenGermany
| | - Judith Buse
- Department of Child and Adolescent PsychiatryFaculty of Medicine of the Technische Universität DresdenDresdenGermany
| | - Veit Roessner
- Department of Child and Adolescent PsychiatryFaculty of Medicine of the Technische Universität DresdenDresdenGermany
| | - Michael N. Smolka
- Department of Psychiatry and Neuroimaging CenterTechnische Universität DresdenDresdenGermany
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7
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Boon HJ. What do ADHD Neuroimaging Studies Reveal for Teachers, Teacher Educators and Inclusive Education? CHILD & YOUTH CARE FORUM 2020. [DOI: 10.1007/s10566-019-09542-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Bae S, Kim JT, Han JM, Han DH. Pilot Study: An Ocular Biomarker for Diagnosis of Attention Deficit Hyperactivity Disorder. Psychiatry Investig 2019; 16:370-378. [PMID: 31132841 PMCID: PMC6539261 DOI: 10.30773/pi.2019.02.26.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 02/26/2019] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE Biomarkers of attention deficit hyperactivity disorder (ADHD) are crucial for early diagnosis and intervention, in which the identification of biomarkers in other areas of the body that represent the immature brain of children with ADHD is necessary. The present study aimed to find biomarkers of ADHD in the retina and assessed the relationship between macular thickness of the retina and cortical thickness of the brain in children with ADHD. METHODS Twelve children with ADHD and 13 control children were recruited for the study. To find ocular markers of ADHD, we investigated the correlation between clinical symptoms of ADHD assessed with the Korean ADHD Rating Scale (K-ARS), cortical thickness of the brain, and macular thickness measured with the mean thickness from the Early Treatment Diabetic Retinopathy Study (ETDRS). RESULTS Children with ADHD showed increased macular thicknesses quantified as an ETDRS ring in both eyes, compared to control subjects. Moreover, the right inner ETDRS ring had a positive correlation with K-ARS scores. The ADHD group had an increased ratio of thickness of the right frontal lobe to that of the parietal cortex, compared with the control group. There were positive correlations between the means of the inner ETDRS ring (right) and the left paracentral/right isthmus cingulate thicknesses in the control group. However, there were negative correlations between the means of the inner ETDRS ring (right) and the left frontal pole/right pars triangularis thicknesses in the ADHD group. The results of both groups were at the uncorrected level. CONCLUSION The different patterns of macular thickness might represent the immature cortical thickness of the brain in children with ADHD.
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Affiliation(s)
- Sujin Bae
- Office of Research, Chung-Ang University, Seoul, Republic of Korea
| | - Jee Taek Kim
- Department of Ophthalmology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Jung Min Han
- Industry Academic Cooperation Foundation, Chung-Ang University, Seoul, Republic of Korea
| | - Doug Hyun Han
- Department of Psychiatry, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
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9
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Updated European Consensus Statement on diagnosis and treatment of adult ADHD. Eur Psychiatry 2018; 56:14-34. [DOI: 10.1016/j.eurpsy.2018.11.001] [Citation(s) in RCA: 201] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 11/02/2018] [Accepted: 11/03/2018] [Indexed: 12/17/2022] Open
Abstract
AbstractBackground Attention-deficit/hyperactivity disorder (ADHD) is among the most common psychiatric disorders of childhood that often persists into adulthood and old age. Yet ADHD is currently underdiagnosed and undertreated in many European countries, leading to chronicity of symptoms and impairment, due to lack of, or ineffective treatment, and higher costs of illness.Methods The European Network Adult ADHD and the Section for Neurodevelopmental Disorders Across the Lifespan (NDAL) of the European Psychiatric Association (EPA), aim to increase awareness and knowledge of adult ADHD in and outside Europe. This Updated European Consensus Statement aims to support clinicians with research evidence and clinical experience from 63 experts of European and other countries in which ADHD in adults is recognized and treated.Results Besides reviewing the latest research on prevalence, persistence, genetics and neurobiology of ADHD, three major questions are addressed: (1) What is the clinical picture of ADHD in adults? (2) How should ADHD be properly diagnosed in adults? (3) How should adult ADHDbe effectively treated?Conclusions ADHD often presents as a lifelong impairing condition. The stigma surrounding ADHD, mainly due to lack of knowledge, increases the suffering of patients. Education on the lifespan perspective, diagnostic assessment, and treatment of ADHD must increase for students of general and mental health, and for psychiatry professionals. Instruments for screening and diagnosis of ADHD in adults are available, as are effective evidence-based treatments for ADHD and its negative outcomes. More research is needed on gender differences, and in older adults with ADHD.
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10
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Sutcubasi Kaya B, Metin B, Tas ZC, Buyukaslan A, Soysal A, Hatiloglu D, Tarhan N. Gray Matter Increase in Motor Cortex in Pediatric ADHD: A Voxel-Based Morphometry Study. J Atten Disord 2018; 22:611-618. [PMID: 27469397 DOI: 10.1177/1087054716659139] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Several studies report that ADHD is associated with reduced gray matter (GM), whereas others report no differences in GM volume between ADHD patients and controls, and some even report more GM volume in individuals with ADHD. These conflicting findings suggest that reduced GM is not a universal finding in ADHD, and that more research is needed to delineate with greater accuracy the range of GM alterations. METHOD The present study aimed to identify GM alterations in ADHD using pediatric templates. 19 drug-naïve ADHD patients and 18 controls, all aged 7 to 14 years, were scanned using magnetic resonance imaging. RESULTS Relative to the controls, the ADHD patients had more GM, predominantly in the precentral and supplementary motor areas. Moreover, there were positive correlations between GM volume in these areas and ADHD scale scores. CONCLUSION The clinical and pathophysiological significance of increased GM in the motor areas remains to be elucidated by additional research.
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Affiliation(s)
| | | | | | - Ayse Buyukaslan
- 2 Marmara University, Istanbul, Turkey.,4 Istanbul Medeniyet University, Turkey
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Nickel K, Tebartz van Elst L, Manko J, Unterrainer J, Rauh R, Klein C, Endres D, Kaller CP, Mader I, Riedel A, Biscaldi M, Maier S. Inferior Frontal Gyrus Volume Loss Distinguishes Between Autism and (Comorbid) Attention-Deficit/Hyperactivity Disorder-A FreeSurfer Analysis in Children. Front Psychiatry 2018; 9:521. [PMID: 30405459 PMCID: PMC6206215 DOI: 10.3389/fpsyt.2018.00521] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 10/02/2018] [Indexed: 01/23/2023] Open
Abstract
Objective: Autism spectrum (ASD) and attention-deficit/hyperactivity disorder (ADHD) are neurodevelopmental disorders with a high rate of comorbidity. To date, diagnosis is based on clinical presentation and distinct reliable biomarkers have been identified neither for ASD nor ADHD. Most previous neuroimaging studies investigated ASD and ADHD separately. Method: To address the question of structural brain differences between ASD and ADHD, we performed FreeSurfer analysis in a sample of children with ADHD (n = 30), with high-functioning ASD (n = 14), with comorbid high-functioning ASD and ADHD (n = 15), and of typically developed controls (TD; n = 36). With FreeSurfer, an automated brain imaging processing and analyzing suite, we reconstructed the cerebral cortex and calculated gray matter volumes as well as cortical surface parameters in terms of cortical thickness and mean curvature. Results: A significant main effect of the factor ADHD was detected for the left inferior frontal gyrus (Pars orbitalis) volume, with the ADHD group exhibiting smaller Pars orbitalis volumes. Dimensional measures of autism (SRS total raw score) and ADHD (DISYPS-II FBB-ADHD score) had no significant influence on the left Pars orbitalis volume. Both, ASD and ADHD tended to have an effect on cortical thickness or mean curvature, which did not survive correction for multiple comparisons. Conclusion: Our results underline that ADHD rather than ASD is associated with volume loss in the left inferior frontal gyrus (Pars orbitalis). This area might play a relevant role in modulating symptoms of inattention and/or impulsivity in ADHD. The effect of comorbid ADHD in ASD samples and vice versa, on cortical thickness and mean curvature, requires further investigation in larger samples.
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Affiliation(s)
- Kathrin Nickel
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Ludger Tebartz van Elst
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Jacek Manko
- Department of Child and Adolescent Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Josef Unterrainer
- Medical Psychology and Medical Sociology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Reinhold Rauh
- Department of Child and Adolescent Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Christoph Klein
- Department of Child and Adolescent Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Dominique Endres
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Christoph P Kaller
- Department of Neurology, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Irina Mader
- Department of Neuroradiology, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Andreas Riedel
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Monica Biscaldi
- Department of Child and Adolescent Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Simon Maier
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
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12
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Afonso RF, Balardin JB, Lazar S, Sato JR, Igarashi N, Santaella DF, Lacerda SS, Amaro E, Kozasa EH. Greater Cortical Thickness in Elderly Female Yoga Practitioners-A Cross-Sectional Study. Front Aging Neurosci 2017; 9:201. [PMID: 28676757 PMCID: PMC5476728 DOI: 10.3389/fnagi.2017.00201] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 06/06/2017] [Indexed: 12/17/2022] Open
Abstract
Yoga, a mind-body activity that requires attentional engagement, has been associated with positive changes in brain structure and function, especially in areas related to awareness, attention, executive functions and memory. Normal aging, on the other hand, has also been associated with structural and functional brain changes, but these generally involve decreased cognitive functions. The aim of this cross-sectional study was to compare brain cortical thickness (CT) in elderly yoga practitioners and a group of age-matched healthy non-practitioners. We tested 21 older women who had practiced hatha yoga for at least 8 years and 21 women naive to yoga, meditation or any mind-body interventions who were matched to the first group in age, years of formal education and physical activity level. A T1-weighted MPRAGE sequence was acquired for each participant. Yoga practitioners showed significantly greater CT in a left prefrontal lobe cluster, which included portions of the lateral middle frontal gyrus, anterior superior frontal gyrus and dorsal superior frontal gyrus. We found greater CT in the left prefrontal cortex of healthy elderly women who trained yoga for a minimum of 8 years compared with women in the control group.
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Affiliation(s)
- Rui F Afonso
- Hospital Israelita Albert EinsteinSão Paulo, Brazil
| | | | - Sara Lazar
- Massachusetts General Hospital-Harvard Medical SchoolBoston, MA, United States
| | - João R Sato
- Universidade Federal do ABCSão Bernardo, Brazil
| | | | - Danilo F Santaella
- Hospital Israelita Albert EinsteinSão Paulo, Brazil.,Centro de Práticas Esportivas da Universidade de São Paulo (CEPEUSP)São Paulo, Brazil
| | | | - Edson Amaro
- Hospital Israelita Albert EinsteinSão Paulo, Brazil
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13
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Groenman AP, Schweren LJS, Dietrich A, Hoekstra PJ. An update on the safety of psychostimulants for the treatment of attention-deficit/hyperactivity disorder. Expert Opin Drug Saf 2017; 16:455-464. [PMID: 28277842 DOI: 10.1080/14740338.2017.1301928] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Methylphenidate is the first-line pharmacological treatment of attention-deficit/hyperactivity disorder (ADHD). Although methylphenidate has a well-established evidence base for treating ADHD, its long-term benefits are unclear. Areas covered: Physical adverse effects, psychiatric adverse events and brain development Expert opinion: Some physical adverse events have been described (e.g. sleep disturbances, growth reduction, loss of appetite), although most are of transient nature. Psychiatric adverse events seem more related to the diagnosis ADHD itself, and not stimulant treatment. Concluding, short-to-mid-term use (i.e., up to 2 years) stimulants are relatively safe, but much less is known about longer-term efficacy and safety of these drugs.
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Affiliation(s)
- Annabeth P Groenman
- a Department of Child and Adolescent Psychiatry , University of Groningen, University Medical Center Groningen , Groningen , Netherlands
| | | | - Andrea Dietrich
- a Department of Child and Adolescent Psychiatry , University of Groningen, University Medical Center Groningen , Groningen , Netherlands
| | - Pieter J Hoekstra
- a Department of Child and Adolescent Psychiatry , University of Groningen, University Medical Center Groningen , Groningen , Netherlands
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14
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Moreno-Alcázar A, Ramos-Quiroga JA, Radua J, Salavert J, Palomar G, Bosch R, Salvador R, Blanch J, Casas M, McKenna PJ, Pomarol-Clotet E. Brain abnormalities in adults with Attention Deficit Hyperactivity Disorder revealed by voxel-based morphometry. Psychiatry Res Neuroimaging 2016; 254:41-47. [PMID: 27318593 DOI: 10.1016/j.pscychresns.2016.06.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 04/25/2016] [Accepted: 06/01/2016] [Indexed: 02/03/2023]
Abstract
UNLABELLED Attention Deficit Hyperactivity Disorder (ADHD) commonly affects children, although the symptoms persist into adulthood in approximately 50% of cases. Structural imaging studies in children have documented both cortical and subcortical changes in the brain. However, there have been only a few studies in adults and the results are inconclusive. METHOD Voxel-based morphometry (VBM) was applied to 44 adults with ADHD, Combined subtype, aged 18-54 years and 44 healthy controls matched for age, sex and IQ. RESULTS ADHD patients showed reduced gray matter (GM) volume in the right supplementary motor area (SMA). Using more lenient thresholds we also observed reductions in the subgenual anterior cingulate (ACC) and right dorsolateral prefrontal (DLPFC) cortices and increases in the basal ganglia, specifically in the left caudate nucleus and putamen. There was a positive correlation between the cumulative stimulant dose and volume in the right SMA and DLPFC clusters. CONCLUSIONS The findings suggest that adults with ADHD show brain structural changes in regions belonging to the so-called cool executive function network. Long-term stimulant medication may act to normalize these GM alterations.
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Affiliation(s)
- Ana Moreno-Alcázar
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain; CIBERSAM, Madrid, Spain; Department of Psychiatry and Forensic Medicine, Autonomous University of Barcelona, Bellaterra, Spain.
| | - Josep A Ramos-Quiroga
- CIBERSAM, Madrid, Spain; Department of Psychiatry and Forensic Medicine, Autonomous University of Barcelona, Bellaterra, Spain; Vall d'Hebron University Hospital, Barcelona, Spain
| | - Joaquim Radua
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain; CIBERSAM, Madrid, Spain; Department of Psychiatry and Forensic Medicine, Autonomous University of Barcelona, Bellaterra, Spain; Department of Psychosis Studies, Institute of Psychiatry, King's College London, London, United Kingdom
| | - José Salavert
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain; Department of Psychiatry and Forensic Medicine, Autonomous University of Barcelona, Bellaterra, Spain; Department of Psychiatry, Sant Rafael Hospital, Hospital Univ. Vall d'Hebron, Barcelona, Spain.
| | | | - Rosa Bosch
- Vall d'Hebron University Hospital, Barcelona, Spain
| | - Raymond Salvador
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain; CIBERSAM, Madrid, Spain; Department of Psychiatry and Forensic Medicine, Autonomous University of Barcelona, Bellaterra, Spain
| | - Josep Blanch
- Department of Radiology Sant Joan de Déu Hospital, Barcelona, Spain
| | - Miquel Casas
- CIBERSAM, Madrid, Spain; Department of Psychiatry and Forensic Medicine, Autonomous University of Barcelona, Bellaterra, Spain; Vall d'Hebron University Hospital, Barcelona, Spain
| | - Peter J McKenna
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain; CIBERSAM, Madrid, Spain; Department of Psychiatry and Forensic Medicine, Autonomous University of Barcelona, Bellaterra, Spain
| | - Edith Pomarol-Clotet
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain; CIBERSAM, Madrid, Spain; Department of Psychiatry and Forensic Medicine, Autonomous University of Barcelona, Bellaterra, Spain
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15
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Pastura G, Kubo TTA, Gasparetto EL, Figueiredo O, Mattos P, Prüfer Araújo A. Pilot study of brain morphometry in a sample of Brazilian children with attention deficit hyperactivity disorder: influence of clinical presentation. Clin Neuroradiol 2016; 27:503-509. [PMID: 27137781 DOI: 10.1007/s00062-016-0512-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Accepted: 03/15/2016] [Indexed: 12/01/2022]
Abstract
PURPOSE Currently, the diagnosis of attention deficit hyperactivity disorder (ADHD) rests on clinical criteria. Nonetheless, neuroimaging studies have demonstrated that children with ADHD have different cortical thickness and volume measures to typically developing children (TDC). In general, studies do not evaluate the influence of clinical presentation in the brain morphometry of ADHD children. Our objective was to perform a pilot study in order to evaluate cortical thickness and brain volume in a sample of Brazilian ADHD children and compare these to those of TDC, taking into account the influence of clinical presentation. METHODS We performed an analytic study comparing 17 drug-naïve ADHD children of both genders, aged between 7 and 10, and 16 TDC. ADHD subjects were first considered as one group and further separated based on clinical presentation. RESULTS The brain volume did not differ between patients and TDC. Smaller cortical thicknesses were identified on the left superior, medium and inferior temporal cortex, as well as in the left inferior parietal cortex. When compared to TDC, combined and inattentive ADHD presentations depicted smaller cortical thickness with high significance and power. The same magnitude of results was not observed when comparing inattentive ADHD and TDC. CONCLUSIONS In this pilot study, ADHD is associated with abnormalities involving the cortical thickness of the posterior attentional system. The cortical thickness in the left superior, medium and inferior temporal cortex, as well as in the left inferior parietal cortex may differ according to ADHD presentations.
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Affiliation(s)
- Giuseppe Pastura
- Departamento de Pediatria, Instituto de Puericultura e Pediatria Martagão Gesteira, UFRJ, Rua Bruno Lobo, 50 - Cidade Universitária, Rio de Janeiro, Brazil.
| | | | | | - Otavio Figueiredo
- COPPEAD Institute, The Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paulo Mattos
- Department of Psychiatry, The Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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16
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Francx W, Llera A, Mennes M, Zwiers MP, Faraone SV, Oosterlaan J, Heslenfeld D, Hoekstra PJ, Hartman CA, Franke B, Buitelaar JK, Beckmann CF. Integrated analysis of gray and white matter alterations in attention-deficit/hyperactivity disorder. NEUROIMAGE-CLINICAL 2016; 11:357-367. [PMID: 27298764 PMCID: PMC4893015 DOI: 10.1016/j.nicl.2016.03.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 03/02/2016] [Accepted: 03/03/2016] [Indexed: 11/03/2022]
Abstract
BACKGROUND Magnetic resonance imaging (MRI) is able to provide detailed insights into the structural organization of the brain, e.g., by means of mapping brain anatomy and white matter microstructure. Understanding interrelations between MRI modalities, rather than mapping modalities in isolation, will contribute to unraveling the complex neural mechanisms associated with neuropsychiatric disorders as deficits detected across modalities suggest common underlying mechanisms. Here, we conduct a multimodal analysis of structural MRI modalities in the context of attention-deficit/hyperactivity disorder (ADHD). METHODS Gray matter volume, cortical thickness, surface areal expansion estimates, and white matter diffusion indices of 129 participants with ADHD and 204 participants without ADHD were entered into a linked independent component analysis. This data-driven analysis decomposes the data into multimodal independent components reflecting common inter-subject variation across imaging modalities. RESULTS ADHD severity was related to two multimodal components. The first component revealed smaller prefrontal volumes in participants with more symptoms, co-occurring with abnormal white matter indices in prefrontal cortex. The second component demonstrated decreased orbitofrontal volume as well as abnormalities in insula, occipital, and somato-sensory areas in participants with more ADHD symptoms. CONCLUSIONS Our results replicate and extend previous unimodal structural MRI findings by demonstrating that prefrontal, parietal, and occipital areas, as well as fronto-striatal and fronto-limbic systems are implicated in ADHD. By including multiple modalities, sensitivity for between-participant effects is increased, as shared variance across modalities is modeled. The convergence of modality-specific findings in our results suggests that different aspects of brain structure share underlying pathophysiology and brings us closer to a biological characterization of ADHD.
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Affiliation(s)
- Winke Francx
- Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, Department of Cognitive Neuroscience, Nijmegen, The Netherlands; Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands.
| | - Alberto Llera
- Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands
| | - Maarten Mennes
- Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands
| | - Marcel P Zwiers
- Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, Department of Cognitive Neuroscience, Nijmegen, The Netherlands; Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands
| | - Stephen V Faraone
- Departments of Psychiatry and of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, USA; K.G. Jebsen Centre for Psychiatric Disorders, Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Jaap Oosterlaan
- VU University Amsterdam, Department of Clinical Neuropsychology, Amsterdam, The Netherlands
| | - Dirk Heslenfeld
- VU University Amsterdam, Department of Clinical Neuropsychology, Amsterdam, The Netherlands
| | - Pieter J Hoekstra
- University of Groningen, University Medical Center Groningen, Department of Psychiatry, Groningen, The Netherlands
| | - Catharina A Hartman
- University of Groningen, University Medical Center Groningen, Department of Psychiatry, Groningen, The Netherlands
| | - Barbara Franke
- Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, Department of Human Genetics, Nijmegen, The Netherlands; Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Department of Psychiatry, Nijmegen, The Netherlands
| | - Jan K Buitelaar
- Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, Department of Cognitive Neuroscience, Nijmegen, The Netherlands; Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands; Karakter Child and Adolescent Psychiatry University Centre, Nijmegen, The Netherlands
| | - Christian F Beckmann
- Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, Department of Cognitive Neuroscience, Nijmegen, The Netherlands; Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands; Centre for Functional MRI of the Brain, University of Oxford, Oxford, United Kingdom
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17
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Wang X, Cao Q, Wang J, Wu Z, Wang P, Sun L, Cai T, Wang Y. The effects of cognitive-behavioral therapy on intrinsic functional brain networks in adults with attention-deficit/hyperactivity disorder. Behav Res Ther 2015; 76:32-9. [PMID: 26629933 DOI: 10.1016/j.brat.2015.11.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 11/02/2015] [Accepted: 11/06/2015] [Indexed: 01/10/2023]
Abstract
Cognitive-behavioral therapy (CBT) is an efficacious psychological treatment for adults with attention-deficit/hyperactivity disorder (ADHD), but the neural processes underlying the benefits of CBT are not well understood. This study aims to unravel psychosocial mechanisms for treatment ADHD by exploring the effects of CBT on functional brain networks. Ten adults with ADHD were enrolled and resting-state functional magnetic resonance imaging scans were acquired before and after a 12-session CBT. Twelve age- and gender-matched healthy controls were also scanned. We constructed whole-brain functional connectivity networks using graph-theory approaches and further computed the changes of regional functional connectivity strength (rFCS) between pre- and post-CBT in ADHD for measuring the effects of CBT. The results showed that rFCS was increased in the fronto-parietal network and cerebellum, the brain regions that were most often affected by medication, in adults with ADHD following CBT. Furthermore, the enhanced functional coupling between bilateral superior parietal gyrus was positively correlated with the improvement of ADHD symptoms following CBT. Together, these findings provide evidence that CBT can selectively modulate the intrinsic network connectivity in the fronto-parietal network and cerebellum and suggest that the CBT may share common brain mechanism with the pharmacology in adults with ADHD.
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Affiliation(s)
- Xiaoli Wang
- Medical Psychological Institute of The Second Xiangya Hospital, Central South University, Changsha, Hunan Province 410011, China; Guangdong Provincial Corps Hospital of Chinese People's Armed Police Forces, Guangzhou Medical University, Guangzhou City, Guangdong Province 510505, China
| | - Qingjiu Cao
- Institute of Mental Health, Peking University, Beijing 100191, China; Peking University Sixth Hospital, Beijing 100191, China; Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing 100191, China.
| | - Jinhui Wang
- Center for Cognition and Brain Disorders, Hangzhou Normal University, Hangzhou, 311121, China; Zhejiang Key Laboratory for Research in Assessment of Cognitive Impairments, Hangzhou, 311121, China
| | - Zhaomin Wu
- Institute of Mental Health, Peking University, Beijing 100191, China; Peking University Sixth Hospital, Beijing 100191, China; Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing 100191, China
| | - Peng Wang
- Institute of Mental Health, Peking University, Beijing 100191, China; Peking University Sixth Hospital, Beijing 100191, China; Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing 100191, China
| | - Li Sun
- Institute of Mental Health, Peking University, Beijing 100191, China; Peking University Sixth Hospital, Beijing 100191, China; Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing 100191, China
| | - Taisheng Cai
- Medical Psychological Institute of The Second Xiangya Hospital, Central South University, Changsha, Hunan Province 410011, China.
| | - Yufeng Wang
- Institute of Mental Health, Peking University, Beijing 100191, China; Peking University Sixth Hospital, Beijing 100191, China; Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing 100191, China
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Dougherty CC, Evans DW, Myers SM, Moore GJ, Michael AM. A Comparison of Structural Brain Imaging Findings in Autism Spectrum Disorder and Attention-Deficit Hyperactivity Disorder. Neuropsychol Rev 2015; 26:25-43. [DOI: 10.1007/s11065-015-9300-2] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 09/22/2015] [Indexed: 01/30/2023]
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19
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Li S, Wang S, Li X, Li Q, Li X. Abnormal surface morphology of the central sulcus in children with attention-deficit/hyperactivity disorder. Front Neuroanat 2015; 9:114. [PMID: 26379511 PMCID: PMC4551868 DOI: 10.3389/fnana.2015.00114] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 08/08/2015] [Indexed: 11/13/2022] Open
Abstract
The central sulcus (CS) divides the primary motor and somatosensory areas, and its three-dimensional (3D) anatomy reveals the structural changes of the sensorimotor regions. Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that is associated with sensorimotor and executive function deficits. However, it is largely unknown whether the morphology of the CS alters due to inappropriate development in the ADHD brain. Here, we employed the sulcus-based morphometry approach to investigate the 3D morphology of the CS in 42 children whose ages spanned from 8.8 to 13.5 years (21 with ADHD and 21 controls). After automatic labeling of each CS, we computed seven regional shape metrics for each CS, including the global average length, average depth, maximum depth, average span, surface area, average cortical thickness, and local sulcal profile. We found that the average depth and maximum depth of the left CS as well as the average cortical thickness of bilateral CS in the ADHD group were significantly larger than those in the healthy children. Moreover, significant between-group differences in the sulcal profile had been found in middle sections of the CSs bilaterally, and these changes were positively correlated with the hyperactivity-impulsivity scores in the children with ADHD. Altogether, our results provide evidence for the abnormity of the CS anatomical morphology in children with ADHD due to the structural changes in the motor cortex, which significantly contribute to the clinical symptomatology of the disorder.
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Affiliation(s)
- Shuyu Li
- School of Biological Science and Medical Engineering, Beihang University Beijing, China
| | - Shaoyi Wang
- School of Biological Science and Medical Engineering, Beihang University Beijing, China
| | - Xinwei Li
- School of Biological Science and Medical Engineering, Beihang University Beijing, China
| | - Qiongling Li
- School of Biological Science and Medical Engineering, Beihang University Beijing, China
| | - Xiaobo Li
- Department of Biomedical Engineering, New Jersey Institute of Technology Newark, NJ, USA ; The Gruss Magnetic Resonance Research Center, Department of Radiology, Albert Einstein College of Medicine New York, NY, USA
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20
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Schweren LJS, Hartman CA, Heslenfeld DJ, van der Meer D, Franke B, Oosterlaan J, Buitelaar JK, Faraone SV, Hoekstra PJ. Thinner Medial Temporal Cortex in Adolescents With Attention-Deficit/Hyperactivity Disorder and the Effects of Stimulants. J Am Acad Child Adolesc Psychiatry 2015. [PMID: 26210335 DOI: 10.1016/j.jaac.2015.05.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
OBJECTIVE Attention-deficit/hyperactivity disorder (ADHD) has been associated with widespread changes in cortical thickness (CT). Findings have been inconsistent, however, possibly due to age differences between samples. Cortical changes have also been suggested to be reduced or to disappear with stimulant treatment. We investigated differences in CT between adolescents/young adults with and without ADHD in the largest ADHD sample to date, the NeuroIMAGE sample. Second, we investigated how such differences were related to age and stimulant treatment. METHOD Participants (participants with ADHD = 306; healthy controls = 184, 61% male, 8-28 years of age, mean age = 17 years) underwent structural magnetic resonance imaging. Participants and pharmacies provided detailed information regarding lifetime stimulant treatment, including cumulative intake and age of treatment initiation and cessation. Vertexwise statistics were performed in Freesurfer, modeling the main effect of diagnosis on CT and its interaction with age. Effects of stimulant treatment parameters on CT were modeled within the sample with ADHD. RESULTS After correction for multiple comparisons, participants with ADHD showed decreased medial temporal CT in both left (pCLUSTER = .008) and right (pCLUSTER = .038) hemispheres. These differences were present across different ages and were associated with symptoms of hyperactivity and prosocial behavior. There were no age-by-diagnosis interaction effects. None of the treatment parameters predicted CT within ADHD. CONCLUSION Individuals with ADHD showed thinner bilateral medial temporal cortex throughout adolescence and young adulthood compared to healthy controls. We found no association between CT and stimulant treatment. The cross-sectional design of the current study warrants cautious interpretation of the findings.
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Affiliation(s)
- Lizanne J S Schweren
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
| | - Catharina A Hartman
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Dennis van der Meer
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Barbara Franke
- Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | | | - Jan K Buitelaar
- Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands; Karakter Child and Adolescent Psychiatry University Centre Nijmegen
| | - Stephen V Faraone
- State University of New York Upstate Medical University, Syracuse, New York
| | - Pieter J Hoekstra
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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21
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Karam RG, Breda V, Picon FA, Rovaris DL, Victor MM, Salgado CAI, Vitola ES, Silva KL, Guimarães-da-Silva PO, Mota NR, Caye A, Belmonte-de-Abreu P, Rohde LA, Grevet EH, Bau CHD. Persistence and remission of ADHD during adulthood: a 7-year clinical follow-up study. Psychol Med 2015; 45:2045-2056. [PMID: 25612927 DOI: 10.1017/s0033291714003183] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Course and predictors of persistence of attention deficit hyperactivity disorder (ADHD) in adults are still largely unknown. Neurobiological and clinical differences between child and adult ADHD raise the need for follow-up studies of patients diagnosed during adulthood. This study investigates predictors of ADHD persistence and the possibility of full remission 7 years after baseline assessment. METHOD A 7-year follow-up study of adults with ADHD (n = 344, mean age 34.1 years, 49.9% males) was conducted. Variables from different domains (social demographics, co-morbidities, temperament, medication status, ADHD measures) were explored with the aim of finding potential predictors of ADHD persistence. RESULTS Retention rate was 66% (n = 227). Approximately a third of the sample (n = 70, 30.2%) did not maintain ADHD criteria and 28 (12.4%) presented full remission (<4 symptoms), independently of changes in co-morbidity or cognitive demand profiles. Baseline predictors of diagnostic persistence were higher number of inattention symptoms [odds ratio (OR) 8.05, 95% confidence interval (CI) 2.54-25.45, p < 0.001], number of hyperactivity/impulsivity symptoms (OR 1.18, 95% CI 1.04-1.34, p = 0.01), oppositional defiant disorder (OR 3.12, 95% CI 1.20-8.11, p = 0.02), and social phobia (OR 3.59, 95% CI 1.12-11.47, p = 0.03). CONCLUSIONS Despite the stage of brain maturation in adults suggests stability, approximately one third of the sample did not keep full DSM-IV diagnosis at follow-up, regardless if at early, middle or older adulthood. Although full remission is less common than in childhood, it should be considered as a possible outcome among adults.
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Affiliation(s)
- R G Karam
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - V Breda
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - F A Picon
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - D L Rovaris
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - M M Victor
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - C A I Salgado
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - E S Vitola
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - K L Silva
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | | | - N R Mota
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - A Caye
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - P Belmonte-de-Abreu
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - L A Rohde
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - E H Grevet
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
| | - C H D Bau
- ADHD Outpatient Clinic,Hospital de Clínicas de Porto Alegre,Porto Alegre,Brazil
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Kim S, Banaschewski T, Tannock R. Color vision in attention-deficit/hyperactivity disorder: a pilot visual evoked potential study. JOURNAL OF OPTOMETRY 2015; 8:116-30. [PMID: 25435188 PMCID: PMC4401829 DOI: 10.1016/j.optom.2014.10.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Revised: 10/27/2014] [Indexed: 05/20/2023]
Abstract
BACKGROUND Individuals with attention-deficit/hyperactivity disorder (ADHD) are reported to manifest visual problems (including ophthalmological and color perception, particularly for blue-yellow stimuli), but findings are inconsistent. Accordingly, this study investigated visual function and color perception in adolescents with ADHD using color Visual Evoked Potentials (cVEP), which provides an objective measure of color perception. METHOD Thirty-one adolescents (aged 13-18), 16 with a confirmed diagnosis of ADHD, and 15 healthy peers, matched for age, gender, and IQ participated in the study. All underwent an ophthalmological exam, as well as electrophysiological testing color Visual Evoked Potentials (cVEP), which measured the latency and amplitude of the neural P1 response to chromatic (blue-yellow, red-green) and achromatic stimuli. RESULT No intergroup differences were found in the ophthalmological exam. However, significantly larger P1 amplitude was found for blue and yellow stimuli, but not red/green or achromatic stimuli, in the ADHD group (particularly in the medicated group) compared to controls. CONCLUSION Larger amplitude in the P1 component for blue-yellow in the ADHD group compared to controls may account for the lack of difference in color perception tasks. We speculate that the larger amplitude for blue-yellow stimuli in early sensory processing (P1) might reflect a compensatory strategy for underlying problems including compromised retinal input of s-cones due to hypo-dopaminergic tone.
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Affiliation(s)
- Soyeon Kim
- Department of Applied Psychology & Human Development OISE, University of Toronto, Toronto, Canada
| | - Tobias Banaschewski
- Department of Child and Adolescent Psychiatry and Psychotherapy Central Institute of Mental Health, Mannheim, Germany; Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Rosemary Tannock
- Department of Applied Psychology & Human Development OISE, University of Toronto, Toronto, Canada; Neuroscience & Mental Health Research Program, The Hospital for Sick Children, Toronto, Canada.
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Cortical surface anatomy in pediatric patients with generalized anxiety disorder. J Anxiety Disord 2014; 28:717-23. [PMID: 25155256 DOI: 10.1016/j.janxdis.2014.07.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 07/05/2014] [Accepted: 07/21/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND It is established that pediatric patients with generalized anxiety disorder (GAD) exhibit functional abnormalities and altered gray matter volumes in neural structures that subserve emotional processing, yet there are no data regarding the surface anatomy of the cerebral cortex in youth with GAD. METHODS Using an automated surface-based approach (FreeSurfer), cortical thickness was assessed node-by-node over the entire cerebral cortex in adolescents with GAD and no co-occurring major depressive disorder (n=13) and healthy subjects (n=19). RESULTS Compared with healthy adolescents, youth with GAD exhibited increased cortical thickness in the right inferolateral and ventromedial prefrontal cortex (i.e., inferior frontal gyrus), the left inferior and middle temporal cortex as well as the right lateral occipital cortex. No relationships were observed between cortical thickness and the severity of anxiety symptoms in the significant regions that were identified in the vertex-wise analysis. CONCLUSIONS These findings suggest that, in adolescents with GAD, abnormalities in cortical thickness are present in an ensemble of regions responsible for fear learning, fear extinction, reflective functioning (e.g., mentalization), and regulation of the amygdala.
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Li F, He N, Li Y, Chen L, Huang X, Lui S, Guo L, Kemp GJ, Gong Q. Intrinsic brain abnormalities in attention deficit hyperactivity disorder: a resting-state functional MR imaging study. Radiology 2014; 272:514-523. [PMID: 24785156 DOI: 10.1148/radiol.14131622] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
PURPOSE To explore alterations of regional and network-level neural function using resting-state functional magnetic resonance (MR) imaging in children and adolescents with attention deficit hyperactivity disorder (ADHD) and to assess the association between these alterations of intrinsic neural activity and executive dysfunction in ADHD. MATERIALS AND METHODS This prospective study was approved by the local ethical committee, and written informed consent was obtained from guardians of all participants. Thirty-three boys with ADHD who were not receiving medication and who were without comorbidity (aged 6-16 years) and 32 healthy control subjects (aged 8-16 years) underwent imaging by using resting-state functional MR imaging. Amplitude of low-frequency fluctuation (ALFF) and seed-based functional connectivity (FC) were calculated to examine regional neural function and functional integration, respectively, and were compared between patients and control subjects by using the voxel-based two-sample t test, while Pearson correlation analyses were performed to identify neural correlates of executive function measured with the Wisconsin Card Sorting Test and the Stroop Color-Word Test. RESULTS Relative to healthy control subjects, patients with ADHD showed impaired executive function (P < .05), along with the following: lower ALFF in the left orbitofrontal cortex (P = .004) and the left ventral superior frontal gyrus (P = .003); higher ALFF in the left globus pallidus (P = .004), the right globus pallidus (P = .002), and the right dorsal superior frontal gyrus (P = .025); lower long-range FC in the frontoparietal and frontocerebellar networks; and higher FC in the frontostriatal circuit that correlated across subjects with ADHD with the degree of executive dysfunction (P < .05). CONCLUSION These findings of focal spontaneous hyper- and hypofunction, together with altered brain connectivity in the large-scale resting-state networks, which correlates with executive dysfunction, point to a connectivity-based pathophysiologic process in ADHD.
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Affiliation(s)
- Fei Li
- From the Huaxi MR Research Center, Department of Radiology (F.L., L.C., X.H., S.L., Q.G.), and Department of Psychiatry, the State Key Laboratory of Biotherapy (N.H., Y.L., L.G.), West China Hospital of Sichuan University, 37 Guo Xue Xiang, Chengdu, Sichuan 610041, China; and Magnetic Resonance and Image Analysis Research Centre and Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, England (G.J.K.)
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25
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Saute R, Dabbs K, Jones JE, Jackson DC, Seidenberg M, Hermann BP. Brain morphology in children with epilepsy and ADHD. PLoS One 2014; 9:e95269. [PMID: 24760032 PMCID: PMC3997349 DOI: 10.1371/journal.pone.0095269] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 03/26/2014] [Indexed: 11/18/2022] Open
Abstract
Background Attention deficit hyperactivity disorder (ADHD) is a common comorbidity of childhood epilepsy, but the neuroanatomical correlates of ADHD in epilepsy have yet to be comprehensively characterized. Methods Children with new and recent-onset epilepsy with (n = 18) and without (n = 36) ADHD, and healthy controls (n = 46) underwent high resolution MRI. Measures of cortical morphology (thickness, area, volume, curvature) and subcortical and cerebellar volumes were compared between the groups using the program FreeSurfer 5.1. Results Compared to the control group, children with epilepsy and ADHD exhibited diffuse bilateral thinning in the frontal, parietal and temporal lobes, with volume reductions in the brainstem and subcortical structures (bilateral caudate, left thalamus, right hippocampus). There were very few group differences across measures of cortical volume, area or curvature. Conclusions Children with epilepsy and comorbid ADHD exhibited a pattern of bilateral and widespread decreased cortical thickness as well as decreased volume of subcortical structures and brainstem. These anatomic abnormalities were evident early in the course of epilepsy suggesting the presence of antecedent neurodevelopmental changes, the course of which remains to be determined.
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Affiliation(s)
- Ricardo Saute
- Faculty of Medicine, Pontificia Universidade Catolica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Kevin Dabbs
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Jana E. Jones
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Daren C. Jackson
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Michael Seidenberg
- Department of Psychology, Rosalind Franklin University of Science and Medicine, North Chicago, Illinois, United States of America
| | - Bruce P. Hermann
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
- * E-mail:
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Rubia K, Alegria A, Brinson H. Imaging the ADHD brain: disorder-specificity, medication effects and clinical translation. Expert Rev Neurother 2014; 14:519-38. [PMID: 24738703 DOI: 10.1586/14737175.2014.907526] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A plethora of magnetic resonance imaging studies have shown that ADHD is characterized by multiple functional and structural neural network abnormalities beyond the classical fronto-striatal model, including fronto-parieto-temporal, fronto-cerebellar and even fronto-limbic networks. There is evidence for a maturational delay in brain structure development which likely extends to brain function and structural and functional connectivity, but this needs corroboration by longitudinal imaging studies. Dysfunction of the ventrolateral prefrontal cortex seems to be more pronounced relative to other pediatric disorders and is also the most consistent target of acute psychostimulant medication. Future studies are likely to focus on using neuroimaging for clinical translation such as for individual diagnostic and prognostic classification and as a neurotherapy to reverse brain function abnormalities.
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Affiliation(s)
- Katya Rubia
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry, King's College London, London, UK
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Hoekzema E, Carmona S, Ramos-Quiroga JA, Richarte Fernández V, Bosch R, Soliva JC, Rovira M, Bulbena A, Tobeña A, Casas M, Vilarroya O. An independent components and functional connectivity analysis of resting state fMRI data points to neural network dysregulation in adult ADHD. Hum Brain Mapp 2013; 35:1261-72. [PMID: 23417778 DOI: 10.1002/hbm.22250] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 10/01/2012] [Accepted: 12/03/2012] [Indexed: 11/10/2022] Open
Abstract
Spontaneous fluctuations can be measured in the brain that reflect dissociable functional networks oscillating at synchronized frequencies, such as the default mode network (DMN). In contrast to its diametrically opposed task-positive counterpart, the DMN predominantly signals during a state of rest, and inappropriate regulation of this network has been associated with inattention, a core characteristic of attention-deficit/hyperactivity disorder (ADHD). To examine whether abnormalities can be identified in the DMN component of patients with ADHD, we applied an independent components analysis to resting state functional magnetic resonance imaging data acquired from 22 male medication-naïve adults with ADHD and 23 neurotypical individuals. We observed a stronger coherence of the left dorsolateral prefrontal cortex (dlPFC) with the DMN component in patients with ADHD which correlated with measures of selective attention. The increased left dlPFC-DMN coherence also surfaced in a whole-brain replication analysis involving an independent sample of 9 medication-naïve adult patients and 9 controls. In addition, a post hoc seed-to-voxel functional connectivity analysis using the dlPFC as a seed region to further examine this region's suggested connectivity differences uncovered a higher temporal coherence with various other neural networks and confirmed a reduced anticorrelation with the DMN. These results point to a more diffuse connectivity between functional networks in patients with ADHD. Moreover, our findings suggest that state-inappropriate neural activity in ADHD is not confined to DMN intrusion during attention-demanding contexts, but also surfaces as an insufficient suppression of dlPFC signaling in relation to DMN activity during rest. Together with previous findings, these results point to a general dysfunction in the orthogonality of functional networks.
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Affiliation(s)
- Elseline Hoekzema
- Unitat de Recerca en Neurociència Cognitiva, Departament de Psiquiatria i Medicina Legal, Universitat Autònoma de Barcelona, Barcelona, Spain; Grup de Recerca en Neuroimatge, Fundació IMIM, Barcelona, Spain
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