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Cytokines and Depressive Symptoms Among Adolescents
Cherry Y Leung1, Sandra J Weiss1
1Department of Community Health Systems, School of Nursing, University of California San Francisco, San Francisco, CA, USA.
Biological Research for Nursing
|February 4, 2025
Summary
Certain inflammatory markers, including tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), IL-6, and IL-8, are linked to adolescent depression. These cytokines may serve as future biomarkers or therapeutic targets for depression.
Area of Science:
- Neuroscience
- Immunology
- Psychiatry
Background:
- Inflammation is increasingly recognized as a factor in depression.
- Research on specific inflammatory markers, such as cytokines, in adolescent depression is limited and shows conflicting results.
Purpose of the Study:
- To investigate the association between specific cytokines (TNF-α, IL-1β, IL-6, and IL-8) and depression in adolescents.
- To explore the potential role of these inflammatory markers in adolescent depressive symptoms and clinical depression.
Main Methods:
- Community-based sample of adolescents aged 13-19 years.
- Salivary samples collected for cytokine analysis (TNF-α, IL-1β, IL-6, IL-8).
- Patient Health Questionnaire-9 (PHQ-9) used to assess depressive symptoms and clinical depression; regression models adjusted for covariates.
Main Results:
- Higher levels of IL-6 and IL-8 correlated with increased depressive symptoms.
- Elevated TNF-α, IL-1β, and IL-8 were associated with a greater likelihood of meeting criteria for clinical depression.
Conclusions:
- Findings suggest specific cytokines are associated with adolescent depression.
- Further research is needed to understand the mechanisms and potential clinical applications, such as depression screening or therapeutic targets.
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