title: The role of epigenetics in social psychiatry.
abstract: BACKGROUND
  Epigenetics refers to the study of heritable changes in gene expression not involving changes in DNA sequence and is presently an active area of research in biology and medicine. There is increasing evidence that epigenetics is involved in the pathogenesis of psychiatric disorders.
  
  
  OBJECTIVE
  Several studies conducted to date have suggested that psychosocial factors act by modifying epigenetic mechanisms of gene expression in the brain in the pathogenesis of psychiatric disorders. Such studies have been conducted both on brain tissues and also using peripheral tissues as substitutes for brain tissues. This article reviews such studies.
  
  
  CONCLUSIONS
  Epigenetic mechanisms of gene expression in the brain appear to link one individual with another in the context of social psychiatry. Epigenetics appears to be of major importance to the field of social psychiatry.
authors.affiliation: Department of Pharmacology and Clinical Pharmacology, Christian Medical College Vellore, Vellore, India.
authors.forename: Jacob
authors.initials: J
authors.lastname: Peedicayil
mesh_terms: D001921:Brain / Q000502:physiology; D003158:Community Psychiatry; D044127:Epigenesis, Genetic; D006801:Humans; D001523:Mental Disorders / Q000534:rehabilitation*
keywords: Epigenetics; pathogenesis; social psychiatry