Influence of psychosocial stress on activation in human brain regions: moderation by the 5-HTTLPR genetic locus.
Physiol Behav
; 220: 112876, 2020 06 01.
Article
em En
| MEDLINE
| ID: mdl-32194071
ABSTRACT
Variants of the serotonin transporter linked polymorphic region (5-HTTLPR) of the serotonin transporter gene SLC6A4 have been related with the onset of depression, anxiety, and other mental disorders. Homozygotes for the short 5-HTTLPR variant, referred to as the SS genotype, have greater cortisol responses to experimentally induced psychosocial stress. In the current study, we used functional magnetic resonance imaging (fMRI) to compare regional brain activations across 5-HTTLPR genotypes in subjects performing the Montreal Imaging Stress Task (MIST). Subjects with an SS genotype had significant greater increases in cortisol concentrations after the task than subjects with at least one long 5-HTTLPR allele. Additionally, relative to L carriers, the SS group had greater activation in the dorsomedial prefrontal cortex(dmPFC), dorsal anterior cingulate cortex, anterior insula.
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Base de dados:
MEDLINE
Assunto principal:
Estresse Psicológico
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Encéfalo
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Proteínas da Membrana Plasmática de Transporte de Serotonina
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article