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COMT Val158Met x SLC6A4 5-HTTLPR interaction impacts on gray matter volume of regions supporting emotion processing

Radua, J., El-Hage, W., Monte, G. C., Gohier, B., Tropeano, M., Phillips, M. L. and Surguladze, S. A. 2014. COMT Val158Met x SLC6A4 5-HTTLPR interaction impacts on gray matter volume of regions supporting emotion processing. Social Cognitive and Affective Neuroscience 9 (8) , pp. 1232-8. 10.1093/scan/nst089

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There have been several reports on the association between the Val158Met genetic polymorphism of the catechol-O-methyltransferase gene (COMT), as well as the serotonin transporter linked polymorphic region (5-HTTLPR) of the serotonin transporter gene (SLC6A4), and fronto-limbic region volumes, which have been suggested to underlie individual differences in emotion processing or susceptibility to emotional disorders. However, findings have been somewhat inconsistent. This study used diffeomorphic anatomic registration through exponentiated Lie algebra (DARTEL) whole-brain voxel-based morphometry (VBM) to study the genetic effects of COMT Val158Met and SLC6A4 5-HTTLPR, as well as their interaction, on the regional gray matter volumes of a sample of 91 healthy volunteers. An interaction of COMT Val158Met x SLC6A4 5-HTTLPR genotypes with gray matter volume was found in bilateral parahippocampal gyrus, amygdala, hippocampus, vermis of cerebellum and right putamen / insula. In particular, the gray matter volume in these regions was smaller in individuals who were both COMT-Met and 5-HTTLPR-S carriers, or both COMT-Val and 5-HTTLPR-L homozygotes, as compared to individuals with intermediate combinations of alleles. The interaction of COMT Val158Met and SLC6A4 5-HTTLPR adds to the understanding of individual differences in emotion processing.

Item Type: Article
Date Type: Publication
Status: Published
Schools: MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Subjects: R Medicine > R Medicine (General)
Publisher: Oxford University Press
ISSN: 1749-5016
Last Modified: 21 Mar 2019 16:35

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