Social support and unsupportive interactions in relation to depressive symptoms: Implication of gender and the BDNF polymorphism.

Social Neuroscience
Robbie WoodsRobyn J McQuaid

Abstract

Reduced levels of brain derived neurotrophic factor (BDNF), through its role in neurogenesis and neuroplasticity, may be involved in the evolution and maintenance of depression. Depression has also been tied to fewer social relationships, which can vary by gender. Thus, we assessed whether the functional single nucleotide polymorphism (SNP) on the BDNF gene, Val66Met, moderated the relationship between depressive symptoms and perceived social support and unsupportive relationships, and whether these associations differed by gender. Among 945 students, (n = 667 females; n= 278 males), depressive scores were inversely related to social support, and positively related with unsupportive relations. Females reported greater social support and depressive scores compared to males. A3-way interaction was found between unsupportive relations, the Val66Met SNP, and gender, such that irrespective of genotype, females displayed astrong relationship between unsupport and depressive scores. Male Met carriers displayed this relationship, but this was less apparent among males with the Val/Val genotype. The Val66Met SNP did not moderate the link between support and depressive scores. This BDNF SNP may serve to moderate the links between psychos...Continue Reading

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Citations

Dec 22, 2020·Psychiatry Research·Robyn J McQuaidNatalia Jaworska
Jan 8, 2021·Frontiers in Behavioral Neuroscience·Kimberly MathesonHymie Anisman
Apr 13, 2020·The American Journal of Geriatric Psychiatry : Official Journal of the American Association for Geriatric Psychiatry·Najada StringaMartijn Huisman

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Methods Mentioned

BETA
genotyping

Software Mentioned

SPSS Statistics
SPSS

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