Interleukin-6 and Depressive Mood Symptoms: Mediators of the Association Between Childhood Abuse and Cognitive Performance in Middle-Aged Adults

Mary Davis, Kathryn Lemery, Ellen Wan Heung Yeung, Linda Luecken, Alex J. Zautra, Michael R. Irwin

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Background: Childhood abuse is a risk factor for the development of cognitive deficits in adulthood, a relation that is likely mediated by stress-sensitive psychological and physiological indicators. Purpose: To evaluate whether the link between exposure to childhood abuse and cognitive function in middle adulthood is mediated by interleukin-6 (IL-6), metabolic risk, and depressive mood symptoms. Methods: Participants were 770 adults aged 40-65 recruited from the community, who completed the following: (i) a questionnaire assessing exposure to abuse prior to age 18, (ii) a phone interview assessing current depressive mood symptoms, and (iii) a home visit that included blood sampling for evaluation of IL-6 and assessment of metabolic risk indices. A follow-up telephone assessment evaluating cognitive function was completed by 555 of the participants. Structural equation modeling was used to test study hypotheses. Results: Childhood abuse predicted higher levels of IL-6, depressive mood symptoms, and metabolic risk scores (p < .05). The relation between childhood abuse and poorer cognitive performance was mediated by IL-6 (p = .046) and depressive mood symptoms (p = .023), but not metabolic risk. IL-6 and depressive mood symptoms significantly mediated the relation between childhood abuse and adult cognitive function. Conclusions: Exposure to early abuse conveys enduring physiological and psychological effects, which may contribute to cognitive deficits that are evident by middle adulthood. Increased vulnerability for cognitive decline among adults with a history of early trauma and the mediating roles of IL-6 and depressive mood symptoms point to the potential value of interventions that address inflammation or depression, singly or together, to prevent cognitive decline in this at-risk population.

Original languageEnglish (US)
Pages (from-to)29-38
Number of pages10
JournalAnnals of Behavioral Medicine
Volume53
Issue number1
DOIs
StatePublished - Jan 1 2019

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Keywords

  • Childhood abuse
  • Cognitive function
  • Depression
  • Inflammation
  • Interleukin-6
  • Metabolic risk

ASJC Scopus subject areas

  • Psychology(all)
  • Psychiatry and Mental health

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