Depressive symptoms enhance stress-induced inflammatory responses

Christopher P. Fagundes, Ronald Glaser, Beom Seuk Hwang, William B. Malarkey, Janice K. Kiecolt-Glaser

Research output: Contribution to journalArticlepeer-review

121 Scopus citations

Abstract

Depression is a risk factor for morbidity and mortality, and immune dysregulation may be partially responsible for this link. Proinflammatory cytokines such as interleukin 6 (IL-6) are reliable predictors of quality of life, morbidity, and many causes of mortality. The current study evaluated relationships between depressive symptoms, as assessed by the CES-D, and stress-induced inflammation. The participants, 138 healthy adults, were evaluated at rest, and after a standardized laboratory speech and mental arithmetic stressor. Compared with individuals with fewer depressive symptoms, those with more depressive symptoms produced more IL-6 in response to the stressor, as well as significantly higher levels of IL-6 both 45. min and 2. h after the stressor. These findings add to our emerging understanding of the complex interactions among stress, depression, and immune dysregulation, and provide one potential pathway to explain relationships between depressive symptoms and disease.

Original languageEnglish (US)
Pages (from-to)172-176
Number of pages5
JournalBrain, behavior, and immunity
Volume31
DOIs
StatePublished - Jul 2013

Keywords

  • Depression
  • Proinflammatory cytokines
  • Psychoneuroimmunology
  • Stress
  • Trier social stress test

ASJC Scopus subject areas

  • Immunology
  • Endocrine and Autonomic Systems
  • Behavioral Neuroscience

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