{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,3]],"date-time":"2026-05-03T23:32:41Z","timestamp":1777851161771,"version":"3.51.4"},"reference-count":30,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2004,3,1]],"date-time":"2004-03-01T00:00:00Z","timestamp":1078099200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Geriatr Psychiatry Neurol"],"published-print":{"date-parts":[[2004,3]]},"abstract":"<jats:p>Disturbed sleep is a major clinical problem in Alzheimer\u2019s disease (AD). Apolipoprotein \u20224 (APOE \u20224) carrier status may increase risk of AD, yet there are no data on relations between APOE status and progression of sleep disturbance in AD. The objective of this study was to determine if sleep parameters in AD patients change over time as a function of APOE carrier status. Forty-four community-dwelling AD patients with diagnosis of probable AD were followed from early stages of disease. Their sleep\/wake parameters were compared according to APOE status. For APOE \u20224 carriers, only wake after sleep onset (WASO) increased in association with lower cognitive function as indicated by the Mini-Mental State Examination (MMSE); for non-\u20224 subjects, increases in WASO and declines in total sleep time, sleep efficiency, and the amplitude of the rest\/activity circadian rhythm over time were associated with lower performance on the MMSE. In these data, APOE status was associated with the progression of sleep\/wake disturbances in AD. Overall, there was greater deterioration on sleep parameters in patients negative for the \u20224 allele.<\/jats:p>","DOI":"10.1177\/0891988703261994","type":"journal-article","created":{"date-parts":[[2004,4,21]],"date-time":"2004-04-21T19:52:37Z","timestamp":1082577157000},"page":"20-24","source":"Crossref","is-referenced-by-count":55,"title":["Sleep\/Wake Disruption in Alzheimer\u2019s Disease: APOE Status and Longitudinal Course"],"prefix":"10.1177","volume":"17","author":[{"given":"Jerome A.","family":"Yesavage","sequence":"first","affiliation":[{"name":"National Institute of Aging Alzheimer\u2019s Disease Core Center, Palo Alto VA Health Care System (151Y), 3801 Miranda Avenue, Palo Alto, CA 94304."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leah","family":"Friedman","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Helena","family":"Kraemer","sequence":"additional","affiliation":[{"name":"Department of 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