Longitudinal mapping of cortical thickness and clinical outcome in children and adolescents with attention-deficit/hyperactivity disorder

被引:505
作者
Shaw, P
Lerch, J
Greenstein, D
Sharp, W
Clasen, L
Evans, A
Giedd, J
Castellanos, FX
Rapoport, J
机构
[1] NIMH, Child Psychiat Branch, Bethesda, MD 20892 USA
[2] McGill Univ, Montreal Neurol Inst, Montreal, PQ, Canada
[3] NYU, Child Study Ctr, New York, NY USA
关键词
D O I
10.1001/archpsyc.63.5.540
中图分类号
R749 [精神病学];
学科分类号
100205 ;
摘要
Context: Data from a previous prospective study of lobar volumes in children with attention-deficit/hyperactivity disorder (ADHD) are reexamined using a measure of cortical thickness. Objective: To determine whether regional differences in cortical thickness or cortical changes across time characterize ADHD and predict or reflect its clinical outcome. Design, Setting, and Participants: Longitudinal study of 163 children with ADHD (mean age at entry, 8.9 years) and 166 controls recruited mainly from a local community in Maryland. Participants were assessed with magnetic resonance imaging. Ninety-seven patients with ADHD (60%) had 2 or more images and baseline and follow-up clinical evaluations (mean follow-up, 5.7 years). Main Outcome Measures: Cortical thickness across the cerebrum. Patients with ADHD were divided into better and worse outcome groups on the basis of a mean split in scores on the Children's Global Assessment Scale and persistence/remission of DSM-IV-defined ADHD. Results: Children with ADHD had global thinning of the cortex (mean reduction, -0.09 mm; P = .02), most prominently in the medial and superior prefrontal and precentral regions. Children with worse clinical outcome had a thinner left medial prefrontal cortex at baseline than the better outcome group (-0.38 mm; P = .003) and controls (-0.25 mm; P = .002). Cortical thickness developmental trajectories did not differ significantly between the ADHD and control groups throughout except in the right parietal cortex, where trajectories converged. This normalization of cortical thickness occurred only in the better outcome group. Conclusions: Children with ADHD show relative cortical thinning in regions important for attentional control. Children with a worse outcome have "fixed" thinning of the left medial prefrontal cortex, which may compromise the anterior attentional network and encumber clinical improvement. Right parietal cortex thickness normalization in patients with a better outcome may represent compensatory cortical change.
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收藏
页码:540 / 549
页数:10
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