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Increase in Interleukin-1ß in Late-Life Depression

OBJECTIVE: Depression has been associated with increases in circulating cytokines in younger adults, and there is evidence for prefrontal inflammation in late-life depression. The authors tested the hypothesis that levels of cytokine interleukin-1ß (IL-1ß) would be higher in subjects with late-life major depression. METHOD: Serum levels of IL-1ß were measured in three groups of subjects who were older than 60: 19 subjects with major depression, 20 subjects with subsyndromal depression, and 21 healthy comparison subjects. The Montgomery-Åsberg Depression Rating Scale and the Geriatric Depression Scale were used to assess severity of depression. RESULTS: Compared with healthy subjects, those with major depression had significantly higher levels of IL-1ß (170%); the higher levels of IL-1ß strongly correlated with current depression severity. There were no significant differences between subjects with subsyndromal depression and the other two groups. CONCLUSIONS: These findings support the existence of an inflammatory response, which may be state dependent, in late-life depression.

This article has been cited by other articles:

				M. B. Howren, D. M. Lamkin, and J. Suls Associations of Depression With C-Reactive Protein, IL-1, and IL-6: A Meta-Analysis Psychosom Med, February 1, 2009; 71(2): 171 - 186. [Abstract] [Full Text] [PDF]

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