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Associations between serotonin transporter gene (SLC6A4) methylation and clinical characteristics and cortical thickness in children with ADHD

Title
Associations between serotonin transporter gene (SLC6A4) methylation and clinical characteristics and cortical thickness in children with ADHD
Author
이종민
Keywords
Attention deficit hyperactivity disorder; brain imaging; gene–environment interaction; neuropsychology
Issue Date
2015-10
Publisher
CAMBRIDGE UNIV PRESS
Citation
PSYCHOLOGICAL MEDICINE, v. 45, NO 14, Page. 3009-3017
Abstract
Background. Attention deficit hyperactivity disorder (ADHD) is a common, highly heritable psychiatric disorder. Additionally, environmental factors such as perinatal stress and early adversities contribute to the occurrence and severity of ADHD. Recently, DNA methylation has emerged as a mechanism that potentially mediates gene-environmental interaction effects in the aetiology and phenomenology of psychiatric disorders. Here, we investigated whether serotonin transporter gene (SLC6A4) methylation patterns were associated with clinical characteristics and regional cortical thickness in children with ADHD. Method. In 102 children with ADHD (age 6-15 years), the methylation status of the SLC6A4 promoter was measured. Brain magnetic resonance imaging was obtained and ADHD symptoms were evaluated. Results. A higher methylation status of the SLC6A4 promoter was significantly associated with worse clinical presentations (more hyperactive-impulsive symptoms and more commission errors). Additionally, a negative correlation was observed between SLC6A4 methylation levels and cortical thickness values in the right occipito-temproral regions. Conclusions. Our results suggest that the SLC6A4 methylation status may be associated with certain symptoms of ADHD, such as behavioural disinhibition, and related brain changes. Future studies that use a larger sample size and a control group are required to corroborate these results.
URI
https://www.cambridge.org/core/journals/psychological-medicine/article/associations-between-serotonin-transporter-gene-slc6a4-methylation-and-clinical-characteristics-and-cortical-thickness-in-children-with-adhd/16FA0CDDCBAA04D19479025AC6001B3Chttp://hdl.handle.net/20.500.11754/28392
ISSN
0033-2917; 1469-8978
DOI
10.1017/S003329171500094X
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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