期刊
AMERICAN JOURNAL OF GERIATRIC PSYCHIATRY
卷 15, 期 6, 页码 522-529出版社
ELSEVIER SCIENCE INC
DOI: 10.1097/JGP.0b013e318033ed80
关键词
depressive symptoms; cortisol; hypothalamo-pituitary-adrenal axis; frailty; older persons
资金
- Intramural NIH HHS [Z99 AG999999] Funding Source: Medline
- NHLBI NIH HHS [1 R01 HL972972] Funding Source: Medline
- NIMHD NIH HHS [R01 MD009164] Funding Source: Medline
Objective: Although depression has been associated with hyperactivity of the hypothalamo-pituitary-adrenal (HPA) axis, recent studies among depressed elderly have found decreased cortisol levels, which may be due to underlying physical frailty associated with HPA-axis hypoactivity. The authors examined the relationship between urinary cortisol level and late-life depressive symptoms. The authors also explored whether hypo- and hypercortisolemic depressive symptoms are qualitatively different. Methods: Data are from 881 community-dwelling participants, average age 74.2 years, of the Aging in the Chianti Area Study. Depressive symptoms were assessed using the Center for Epidemiologic Studies Depression Scale (CES-D) scale and cortisol levels were determined in 24-hour urine samples. Results: Mean urinary cortisol level was 98.9 mu g/24 hours ( SD = 47.8), and 31% of the sample had significant depressive symptoms (CES-D >= 16). There was no linear association between urinary cortisol level and depressive symptoms; however, there was a nonlinear association between urinary cortisol level and depressive symptoms. Older persons in the lowest and highest urinary cortisol deciles were 2.2 and 1.9 times more likely to have significant depressive symptoms than older persons in all other deciles. Depressed persons with low cortisol presented more physical frailty than depressed persons with high cortisol. Conclusion: Late-life depressive symptoms are associated with both hyperactivity and hypoactivity of the HPA axis, which suggests distinct mechanisms for these associations.
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