PMID- 25347540 OWN - NLM STAT- MEDLINE DCOM- 20160405 LR - 20211021 IS - 1939-1293 (Electronic) IS - 0893-3200 (Print) IS - 0893-3200 (Linking) VI - 28 IP - 6 DP - 2014 Dec TI - Genetic susceptibility to family environment: BDNF Val66met and 5-HTTLPR influence depressive symptoms. PG - 947-56 LID - 10.1037/fam0000032 [doi] AB - Functional genetic polymorphisms associated with Brain-Derived Neurotrophic Factor (BDNF) and serotonin (5-HTTLPR) have demonstrated associations with depression in interaction with environmental stressors. In light of evidence for biological connections between BDNF and serotonin, it is prudent to consider genetic epistasis between variants in these genes in the development of depressive symptoms. The current study examined the effects of val66met, 5-HTTLPR, and family environment quality on youth depressive symptoms in adolescence and young adulthood in a longitudinal sample oversampled for maternal depression history. A differential susceptibility model was tested, comparing the effects of family environment on depression scores across different levels of a cumulative plasticity genotype, defined as presence of both, either, or neither plasticity alleles (defined here as val66met Met and 5-HTTLPR 'S'). Cumulative plasticity genotype interacted with family environment quality to predict depression among males and females at age 15. After age 15, however, the interaction of cumulative plasticity genotype and early family environment quality was only predictive of depression among females. Results supported a differential susceptibility model at age 15, such that plasticity allele presence was associated with more or less depressive symptoms depending on valence of the family environment, and a diathesis-stress model of gene-environment interaction after age 15. These findings, although preliminary because of the small sample size, support prior results indicating interactive effects of 5-HTTLPR, val66met, and environmental stress, and suggest that family environment may have a stronger influence on genetically susceptible women than men. FAU - Dalton, Elizabeth D AU - Dalton ED AD - Department of Psychology, University of California, Los Angeles. FAU - Hammen, Constance L AU - Hammen CL AD - Department of Psychology, University of California, Los Angeles. FAU - Najman, Jake M AU - Najman JM AD - School of Population Health, University of Queensland. FAU - Brennan, Patricia A AU - Brennan PA AD - Department of Psychology, Emory University. LA - eng GR - R01 MH052239/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20141027 PL - United States TA - J Fam Psychol JT - Journal of family psychology : JFP : journal of the Division of Family Psychology of the American Psychological Association (Division 43) JID - 8802265 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (SLC6A4 protein, human) RN - 0 (Serotonin Plasma Membrane Transport Proteins) RN - 7171WSG8A2 (BDNF protein, human) SB - IM MH - Adolescent MH - Adult MH - *Alleles MH - Brain-Derived Neurotrophic Factor/*genetics MH - Cohort Studies MH - Depressive Disorder/*genetics/*psychology MH - Epistasis, Genetic/genetics MH - Family Conflict/*psychology MH - Female MH - *Gene-Environment Interaction MH - Genetic Predisposition to Disease/*genetics MH - Genotype MH - Humans MH - Male MH - Serotonin Plasma Membrane Transport Proteins/*genetics MH - Young Adult PMC - PMC5510745 MID - NIHMS879813 EDAT- 2014/10/28 06:00 MHDA- 2016/04/06 06:00 PMCR- 2017/07/14 CRDT- 2014/10/28 06:00 PHST- 2014/10/28 06:00 [entrez] PHST- 2014/10/28 06:00 [pubmed] PHST- 2016/04/06 06:00 [medline] PHST- 2017/07/14 00:00 [pmc-release] AID - 2014-44480-001 [pii] AID - 10.1037/fam0000032 [doi] PST - ppublish SO - J Fam Psychol. 2014 Dec;28(6):947-56. doi: 10.1037/fam0000032. Epub 2014 Oct 27.