COMT Val 158 Met x SLC6A4 5-HTTLPR interaction impacts on gray matter volume of regions supporting emotion processing - Archive ouverte HAL Access content directly
Journal Articles Social Cognitive and Affective Neuroscience Year : 2014

COMT Val 158 Met x SLC6A4 5-HTTLPR interaction impacts on gray matter volume of regions supporting emotion processing

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Joaquim Radua
Wissam El-Hage
Gemma C Monté
  • Function : Author
Maria Tropeano
  • Function : Author

Abstract

There have been several reports on the association between the Val 158 Met genetic polymorphism of the catechol-O-methyltransferase (COMT) gene, as well as the serotonin transporter-linked polymorphic region (5-HTTLPR) of the serotonin transporter gene (SLC6A4), and frontolimbic 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 to study the genetic effects of COMT Val 158 Met 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 Val 158 Met  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 with individuals with intermediate combinations of alleles. The interaction of COMT Val 158 Met and SLC6A4 5-HTTLPR adds to the understanding of individual differences in emotion processing.
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hal-02524289 , version 1 (30-03-2020)

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Joaquim Radua, Wissam El-Hage, Gemma C Monté, Bénédicte Gohier, Maria Tropeano, et al.. COMT Val 158 Met x SLC6A4 5-HTTLPR interaction impacts on gray matter volume of regions supporting emotion processing. Social Cognitive and Affective Neuroscience, 2014, 9 (8), pp.1232-1238. ⟨10.1093/scan/nst089⟩. ⟨hal-02524289⟩
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