Interactive effects of BDNF Val66Met genotype and trauma on limbic brain anatomy in childhood
European Child and Adolescent Psychiatry, ISSN: 1435-165X, Vol: 25, Issue: 5, Page: 509-518
2016
- 17Citations
- 94Captures
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Metrics Details
- Citations17
- Citation Indexes17
- 17
- CrossRef8
- Captures94
- Readers94
- 94
Article Description
Childhood trauma is a major precipitating factor in psychiatric disease. Emerging data suggest that stress susceptibility is genetically determined, and that risk is mediated by changes in limbic brain circuitry. There is a need to identify markers of disease vulnerability, and it is critical that these markers be investigated in childhood and adolescence, a time when neural networks are particularly malleable and when psychiatric disorders frequently emerge. In this preliminary study, we evaluated whether a common variant in the brain-derived neurotrophic factor (BDNF) gene (Val66Met; rs6265) interacts with childhood trauma to predict limbic gray matter volume in a sample of 55 youth high in sociodemographic risk. We found trauma-by-BDNF interactions in the right subcallosal area and right hippocampus, wherein BDNF-related gray matter changes were evident in youth without histories of trauma. In youth without trauma exposure, lower hippocampal volume was related to higher symptoms of anxiety. These data provide preliminary evidence for a contribution of a common BDNF gene variant to the neural correlates of childhood trauma among high-risk urban youth. Altered limbic structure in early life may lay the foundation for longer term patterns of neural dysfunction, and hold implications for understanding the psychiatric and psychobiological consequences of traumatic stress on the developing brain.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84939500632&origin=inward; http://dx.doi.org/10.1007/s00787-015-0759-4; http://www.ncbi.nlm.nih.gov/pubmed/26286685; http://link.springer.com/10.1007/s00787-015-0759-4; https://dx.doi.org/10.1007/s00787-015-0759-4; https://link.springer.com/article/10.1007/s00787-015-0759-4; http://link.springer.com/content/pdf/10.1007/s00787-015-0759-4; https://link.springer.com/content/pdf/10.1007/s00787-015-0759-4.pdf; http://link.springer.com/article/10.1007%2Fs00787-015-0759-4; https://link.springer.com/content/pdf/10.1007%2Fs00787-015-0759-4.pdf; http://link.springer.com/content/pdf/10.1007/s00787-015-0759-4.pdf; http://link.springer.com/article/10.1007/s00787-015-0759-4/fulltext.html
Springer Science and Business Media LLC
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