The neuropsychology of normal aging and preclinical Alzheimer's disease.

The neuropsychology of normal aging and preclinical Alzheimer's disease.
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DOI:
10.1016/j.jalz.2013.01.004
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发表时间:
2014-01
期刊:
Alzheimer's & dementia : the journal of the Alzheimer's Association
影响因子:
--
通讯作者:
Reiman EM
Reiman EM
中科院分区:
其他
文献类型:
--
作者:
Caselli RJ;Locke DE;Dueck AC;Knopman DS;Woodruff BK;Hoffman-Snyder C;Rademakers R;Fleisher AS;Reiman EM

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An NIA-sponsored workgroup on preclinical Alzheimer’s disease (AD) articulated the need to characterize cognitive differences between normal aging and preclinical AD. 71 apolipoprotein E (APOE) e4 homozygotes (HMZ), 194 e3/4 heterozygotes (HTZ), and 356 e4 noncarriers (NC) aged 21–87 years who were cognitively healthy underwent neuropsychological testing every two years. Longitudinal trajectories of test scores were compared between APOE subgroups. There was a significant effect of age on all cognitive domains in both APOE e4 carriers and NC. A significant effect of APOE e4 gene dose was confined to the memory domain and the Dementia Rating Scale. Cross sectional comparisons did not discriminate the groups. While cognitive aging patterns are similar in APOE e4 carriers and NC, preclinical AD is characterized by a significant e4 gene dose effect that impacts memory and is detectable longitudinally. Preclinical neuropsychological testing strategies should emphasize memory sensitive measures and longitudinal design.
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