کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4313850 1290013 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphological correlates of MAO A VNTR polymorphism: New evidence from cortical thickness measurement
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
Morphological correlates of MAO A VNTR polymorphism: New evidence from cortical thickness measurement
چکیده انگلیسی

A functional variant in the mono-amine oxidase A (MAO A) gene has been shown to impact neural function related to cognitive and affective processing and increase risk for conduct disorders. However, whether MAO A could be a candidate gene for structural variation in the human brain remains to be clarified. This study is the first to investigate the effect of this genotype on brain morphology by measuring cortical thickness. We genotyped 59 healthy male subjects (36 carrying the MAO A High-activity allele and 23 the MAO A Low-activity allele) who underwent structural MRI at 3 T. Models of the grey-white and pial surfaces were generated for each individual's cortices, and the distance between these two surfaces was used to compute cortical thickness within a priori regions of interest of the orbitofrontal and cingulate cortices. Surface-based analysis of the cortical mantle showed that the MAO A genotype was associated with structural differences in the orbitofrontal cortex bilaterally, where the MAO A High-activity group showed the highest cortical thickness value and the MAO A Low-activity group the lowest. Otherwise, no significant difference was detected within the cingulate cortex. Thus, we confirm the hypothesis that the MAO A genotype has a specific impact on human brain morphology. In particular, thickness measurement of the orbitofrontal cortex provides new evidence about the biological impact of the MAO A genotype on neural systems relevant to the pathophysiology of behavioural disorders.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Behavioural Brain Research - Volume 211, Issue 1, 29 July 2010, Pages 118–124
نویسندگان
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