Sex, stress, and epigenetics: regulation of behavior in animal models of mood disorders

Biology of Sex Differences

Georgia E Hodes¹ 

[1] Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA

关键词: Sex differences.;    Histone modifications;    DNA methylation;    Animal models;    Anxiety;    Depression;    Stress;    Epigenetics;   

Others  :  793341
DOI  :  10.1186/2042-6410-4-1

 received in 2012-11-20, accepted in 2012-12-31,  发布年份 2013

【 摘 要 】

Women have a higher incidence of stress related disorders including depression and generalized anxiety disorder, and epigenetic mechanisms likely contribute to this sex difference. Evidence from preclinical research suggests that epigenetic mechanisms are responsible for both sexual dimorphism of brain regions and sensitivity of the stress response. Epigenetic modifications such as DNA methylation and histone modifications can occur transgenerationally, developmentally, or in response to environmental stimuli such as stress exposure. This review will provide an overview of the various forms of epigenetic modifications observed in the central nervous system and will explain how these mechanisms contribute to a sexually dimorphic brain. It will also discuss the ways in which epigenetic alterations coincide with, and functionally contribute to, the behavioral response to stress across the lifespan. Ultimately, this review will focus on novel research utilizing animal models to investigate sex differences in epigenetic mechanisms that influence susceptibility to stress. Exploration of this relationship reveals epigenetic mechanisms with the potential to explain sexual dimorphism in the occurrence of stress related disorders.

【 授权许可】

   
2013 Hodes; licensee BioMed Central Ltd.

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