期刊
JOURNAL OF THE AMERICAN GERIATRICS SOCIETY
卷 58, 期 5, 页码 873-879出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1532-5415.2010.02807.x
关键词
depression; cognition; cognitive impairment; genetics; epidemiology
资金
- Dutch Government
- Dutch Research Foundation
- Maastricht University
OBJECTIVES To examine the temporal association between depressive symptoms and cognitive functioning and estimate the effect measure modification of the apolipoprotein E (APOE) epsilon 4 allele on this relationship. DESIGN Prospective cohort study. SETTING General community. PARTICIPANTS Population-based sample of 598 cognitively intact older adults aged 60 and older, with re-assessments after 3 (N=479) and 6 years (N=412). MEASUREMENTS Depressive symptoms (Symptom Checklist) and neurocognitive functioning (memory, Visual Verbal Learning Test; attention, Stroop Color-Word Test; processing speed, Letter Digit Substitution Test; general cognition, Mini-Mental State Examination). Longitudinal associations were assessed using linear mixed models. The risk for cognitive impairment, no dementia (CIND) was examined using logistic regression. RESULTS Adjusting for age, sex, education, and baseline cognition, the rate of change in memory z-scores was 0.00, -0.11, -0.20, and -0.37 for those in the lowest (reference group), second, third, and highest depressive symptom quartiles at baseline, respectively (P <.001 for highest vs lowest quartile). The odds ratios for developing CIND with amnestic features were 1.00, 0.87, 0.69, and 2.98 for the four severity groups (P=.05 for highest vs lowest quartile). Associations were strongest for those with persistent depressive symptoms, defined as high depressive symptoms at baseline and at least one follow-up visit. Results were similar for processing speed and global cognitive function but were not as strong for attention. No APOE interaction was observed. CONCLUSION Depression and APOE act independently to increase the risk for cognitive decline and may provide targets for prevention and early treatment.
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