The pain, depression, and fatigue symptom cluster in advanced breast cancer: Covariation with the hypothalamic–pituitary–adrenal axis and the sympathetic nervous system.
- 1 January 2010
- journal article
- Published by American Psychological Association (APA) in Health Psychology
- Vol. 29 (3), 333-337
- https://doi.org/10.1037/a0018836
Abstract
Neuroendocrine-immune models have been proposed to account for the frequent co-occurrence of pain, depression, and fatigue (PDF) among cancer patients. In a cross-sectional observational study of advanced cancer patients (N = 104), we tested the hypothesis that the PDF cluster covaries with proposed biological mediators: hormones of the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. PDF symptoms were measured using the Brief Pain Inventory, Fatigue Symptom Inventory, and the Center for Epidemiological Studies Depression scales. HPA activation was indicated by plasma levels of cortisol and adrenocorticotropic hormone, and SNS activation was indicated by plasma epinephrine and norepinephrine. Preliminary analyses supported the use of covariance structure modeling to test whether shared variance among hormone levels predicted shared variance among PDF symptoms. Latent variable analysis indicated that neuroendocrine levels predicted PDF (standardized beta = .23, p = .039), while controlling for important disease and demographic variables. Previous studies have linked individual symptoms to individual biomarkers. The observed significant paring of the 4 hormones to the PDF cluster provides the first evidence suggestive of stress hormones as a common mechanism for the co-occurrence of pain, depression, and fatigue symptoms.Keywords
Funding Information
- American Cancer Society (PF-07-169-01-CPPB)
- Longaberger Company (RSGPB-03-248-01-PBP)
- Ohio State University (M01-RR0034)
- National Cancer Institute (K05 CA098133)
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