Depressive symptoms and incident cognitive impairment in cognitively well-functioning older men and women.

Autor: Ng TP; Gerontological Research Programme, Department of Psychological Medicine, National University Hospital, National University of Singapore, 5 Lower Kent Ridge Road, 119074 Singapore. pcmngtp@nus.edu.sg, Niti M, Zaw MH, Kua EH
Jazyk: angličtina
Zdroj: Journal of the American Geriatrics Society [J Am Geriatr Soc] 2009 Jun; Vol. 57 (6), pp. 1058-63. Date of Electronic Publication: 2009 Apr 17.
DOI: 10.1111/j.1532-5415.2009.02262.x
Abstrakt: Objectives: To investigate whether the effect of depressive symptoms on the risk of cognitive decline and incident cognitive impairment (CI) in cognitively well-functioning older persons differed between men and women and whether sex differences in cerebrovascular factors might explain this.
Design: Prospective cohort study.
Setting: General community.
Participants: One thousand four hundred eighty-seven well-functioning Chinese older adults (Mini-Mental State Examination (MMSE) score > or =24) assessed at baseline for the presence of depressive symptoms (Geriatric Depression Scale score > or =5), and covariates (age, apolipoprotein E epsilon4, education, smoking, alcohol drinking, and vascular risk factors and diseases).
Main Outcome Measures: Incident CI and change in MMSE were assessed at 2-year follow-up.
Results: In the whole sample, participants with depression showed significantly more incident CI than those without (5.7% vs 2.6%, P=.04; adjusted odds ratio (OR)=2.29, 95% confidence interval (CI)=1.05-5.00. Significantly higher OR was observed only in men (OR=4.75, 95% CI=1.22-18.5) and not for women (OR=1.29). There was a correspondingly greater rate of cognitive decline in participants with depressive symptoms that was observed to be marked only in men and not in women. The association was accentuated in subgroups with hypertension or vascular factors, but the sex differences in association were consistently observed.
Conclusion: The association between depressive symptoms and risk of cognitive decline was observed only in men and was not explained by sex differences in vascular factors. The comorbid presence of underlying cerebral vascular pathology or multi-infarct disease was possibly not a mediating factor but might amplify the process of cognitive decline.
Databáze: MEDLINE
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