Maternal trauma and fear history predict BDNF methylation and gene expression in newborns

PeerJ
Stefanie R PilkayAlicia K Smith

Abstract

Trauma and related fear exert significant influence on mental and physical health throughout the lifespan and are associated with intergenerational patterns of development, health, and behavior. DNA methylation and gene expression are involved in our developmental adaptations to our experiences and can be influenced by social interventions. Patterns of DNA methylation and expression of a gene involved in neurodevelopment and psychiatric risk (BDNF) have been linked with childhood trauma. Given the intergenerational patterns of health and behavior, and previous links between childhood trauma and BDNF methylation and expression, this study investigated the potential for maternal history of traumatic experiences to influence development in her newborn, via changes in her newborn's BDNF methylation and expression. We found that mothers' trauma history was associated with epigenetic regulation of BDNF in their newborns. Moreover, the association between maternal trauma and BDNF methylation and expression patterns were moderated by newborn sex. Male newborns showed increased BDNF expression with maternal exposure to child abuse (p = .001), and increased BDNF methylation with greater maternal fear (p = .001). Female newborns showed re...Continue Reading

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Citations

Aug 23, 2020·International Journal of Molecular Sciences·Aroa Mañas-OjedaEsther Castillo-Gómez
Dec 2, 2020·Progress in Neuro-psychopharmacology & Biological Psychiatry·Helene A FachimGavin P Reynolds

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Methods Mentioned

BETA
chip
chips

Software Mentioned

Psych
ComBat
R Core Team
R package MethLAB
R

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