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DNA methylation and childhood maltreatment: from animal models to human studies

P-E Lutz1, G Turecki1

  • 1McGill Group for Suicide Studies, Douglas Mental Health University Institute, Montréal, Québec, Canada.

Neuroscience
|August 13, 2013
PubMed

Insights

Childhood maltreatment (CM) can alter brain function throughout life via DNA methylation. This epigenetic mechanism links early-life adversity to long-term mental health risks and psychiatric disorders.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Epigenetics

Background:

  • Childhood maltreatment (CM) affects 10-15% of Western societies.
  • CM is linked to psychiatric disorders, early illness onset, and poor outcomes.
  • Understanding the long-term brain effects of CM is a significant challenge.

Purpose of the Study:

  • To review studies on how early-life experiences impact brain function over time.
  • To highlight the role of epigenetic mechanisms in mediating the effects of CM.
  • To explore the link between CM, DNA methylation, and psychopathological risk.

Main Methods:

  • Review of animal and human studies.
  • Focus on epigenetic mechanisms, specifically DNA methylation.
  • Analysis of neurobiological and psychopathological outcomes.

Main Results:

  • DNA methylation acts as a key mediator of early-life experiences.
  • Epigenetic changes maintain life-long neurobiological consequences of CM.
  • These changes significantly influence the risk of developing psychiatric disorders.

Conclusions:

  • Epigenetic mechanisms, particularly DNA methylation, are crucial for understanding the lasting impact of CM on brain function.
  • CM-induced epigenetic alterations contribute to long-term psychopathological risk.
  • Further research into these mechanisms can inform early interventions.

Keywords:
DNA methylationchildhood maltreatmentepigeneticglucocorticoid receptormaternal carestress

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