Cited by 46Electroconvulsive Therapy StudiesTryptophan and brain disordersTreatment of Major Depression

Inflammation and Depression Treatment Response to Electroconvulsive Therapy: Sex-Specific Role of Interleukin-8

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Kruse, Jennifer L., Olmstead, Richard, Hellemann, Gerhard, Wade, Benjamin, Jiang, Janina, Vasavada, Megha M., Brooks III, John O., Congdon, Eliza +3 more·2020·Brain, Behavior, and Immunity

Abstract

Females suffer from depression at twice the rate of males and have differential neural and emotional responses to inflammation. However, sex-specific evaluation of relationships between inflammation and response to depression treatments are lacking. Some data suggest that interleukin(IL)-8 predicts treatment response to antidepressants and has a relationship with depressive symptom severity. This study examines whether IL-8 predicts treatment response to electroconvulsive therapy (ECT), and whether there are sex specific effects. In 40 depressed patients (22 female), plasma levels of IL-8, as well as other markers of inflammation including IL-6, IL-10, tumor necrosis factor (TNF)-α, and C-reactive protein (CRP) were obtained prior to administration of ECT and after completion of the index treatment series. Depression treatment response was defined as ≥ 50% reduction in Hamilton Depression Rating Scale (HAM-D) Score. Baseline levels of IL-8 differed by responder status, depending on sex (group × sex interaction: β = -0.571, p = 0.04), with female responders having lower levels of IL-8 at baseline as compared to female non-responders [t(20) = 2.37, p = 0.03]. Further, IL-8 levels from baseline to end of treatment differed by responder status, depending on sex (group × sex × time interaction: [F(1,36) = 9.48, p = 0.004]), and change in IL-8 from baseline to end of treatment was negatively correlated with percentage change in HAM-D score in females (β = -0.458, p = 0.03), but not in males (β = 0.315, p = 0.20). Other inflammatory markers did not differ in relation to responder status and sex. Further evaluation of sex differences in the relationship between IL-8, depression, and treatment response, across disparate treatment modalities, may inform mechanisms of response and aid in development of personalized medicine strategies.

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Authors
Kruse, J. L., Olmstead, R., Hellemann, G., Wade, B., Jiang, J., Vasavada, M. M., Brooks III, J. O., Congdon, E., Espinoza, R., Narr, K. L., & Irwin, M. R.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Kruse, Jennifer L.
Venue
Brain, Behavior, and Immunity
Publisher
Elsevier BV
Published
2020-10
Volume
89
Pages
59-66
ISSN
0889-1591 (ISSN-L)
OpenAlex
W3029845229
Cited by
46
References
69
Citations by year
2026: 5 · 2025: 8 · 2024: 12 · 2023: 8 · 2022: 8 · 2021: 5
FWCI
3.83
Type
journal article
Language
en
Open access
Locations
  • Brain Behavior and Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institutes of Health
  • National Center for Advancing Translational Sciences
  • National Institute of Mental Health
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Electroconvulsive Therapy Studies
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
electroconvulsive therapy, depression, interleukin-8, sex differences, treatment response prediction, inflammation, inflammatory markers, C-reactive protein, TNF-α, interleukin-6, IL-10, personalized medicine
MeSH terms
Depression, Depressive Disorder, Major, Major Depressive Disorder, Electroconvulsive Therapy, Female, Humans, Inflammation, Male, Psychiatric Status Rating Scales, Interleukin-8, Treatment Outcome

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