Maternal Childhood Trauma and Offspring Hypothalamic-Pituitary-Adrenal Axis Function from Infancy to 6 Years of Age

Area of Science:

• Psychology
• Endocrinology
• Developmental Science

Background:

• Childhood trauma can have intergenerational effects on offspring health and behavior.
• The hypothalamic-pituitary-adrenal (HPA) axis is a potential mechanism for these effects.
• Understanding these mechanisms is crucial for intervention strategies.

Purpose of the Study:

• To examine the association between maternal childhood trauma experiences and their children's HPA axis functioning.
• To investigate cortisol reactivity and total circadian cortisol output in children at 12 months and 6 years of age.
• To explore potential moderating factors in the intergenerational transmission of trauma effects.

Main Methods:

• Longitudinal study of 170 mother-child dyads.
• Assessed maternal childhood trauma (maltreatment, violence).
• Measured child cortisol reactivity and circadian output at 12 months and 6 years using multilevel regression analyses.

Main Results:

• No significant association found between maternal childhood trauma and child cortisol reactivity or total circadian cortisol output at either time point.
• Exploratory analyses indicated moderation by maternal prenatal psychopathology and prenatal cortisol slope.
• Maternal childhood trauma showed a positive association with child cortisol output in mothers with high prenatal psychopathology/cortisol slope, and a negative association in those with low levels.

Conclusions:

• Maternal childhood trauma did not directly impact young children's HPA axis functioning in this community sample.
• Maternal psychopathology and prenatal cortisol patterns may moderate the intergenerational effects of childhood trauma on children's HPA axis.
• Further research is needed in diverse populations and with older children to confirm these findings.