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Child maltreatment and the developing HPA axis

Amanda R Tarullo1, Megan R Gunnar

  • 1Institute of Child Development, 51 East River Road, University of Minnesota, Minneapolis, Minnesota, USA.

Hormones and Behavior
|August 1, 2006
PubMed

Insights

Child maltreatment significantly impacts the developing hypothalamic-pituitary-adrenal (HPA) axis, affecting cortisol levels and stress responses long-term. Research must consider multiple factors to fully understand these complex HPA axis alterations.

Area of Science:

  • Neuroendocrinology
  • Developmental Psychology
  • Child Psychiatry

Background:

  • The hypothalamic-pituitary-adrenal (HPA) axis is crucial for stress response and is sensitive to early life experiences.
  • Child maltreatment can disrupt HPA axis development, leading to long-term alterations in stress regulation.
  • Factors such as psychiatric status, life adversity, age, and genetics influence HPA axis responses to stress.

Purpose of the Study:

  • To review the complex, long-term influences of child maltreatment on basal cortisol levels and HPA axis responsivity.
  • To identify key factors and research directions needed to disentangle the intricate interactions within the HPA axis following maltreatment.

Main Methods:

  • Review of existing literature on HPA axis function in maltreated children and adults.
  • Analysis of findings related to basal cortisol levels and responses to pharmacological and psychological stressors.
  • Consideration of moderating variables including psychiatric status, life adversity, age, and genetic factors.

Main Results:

  • Maltreated children with internalizing problems often show elevated early morning basal cortisol.
  • Adults with a history of child maltreatment frequently exhibit low basal cortisol levels and heightened ACTH responses to stress.
  • HPA axis alterations are complex and depend on multiple interacting factors.

Conclusions:

  • Future research should investigate the transition to puberty, the role of candidate genes, and utilize animal models and ethical pharmacological challenges.
  • Post-institutionalized children may serve as a valuable model for differentiating early adversity from current environmental factors.
  • A comprehensive approach is necessary to fully understand and address HPA axis dysregulation resulting from child maltreatment.

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