Cerebrospinal fluid and plasma insulin levels in Alzheimer's disease Relationship to severity of dementia and apolipoprotein E genotype
摘要：
Patients with Alzheimer's disease (AD) have elevations of fasting plasma insulin that are hypothesized to be associated with disrupted brain insulin metabolism. We examined paired fasted plasma and CSF insulin levels in 25 patients with AD and 14 healthy age-matched adults and determined whether insulin levels were related to severity of dementia and apolipoprotein E-epsilon4 homozygosity, a known genetic risk factor for AD. The AD patients had lower CSF insulin, higher plasma insulin, and a reduced CSF-to-plasma insulin ratio when compared with healthy adults. The differences were greater for patients with more advanced AD. Patients who were not apolipoprotein E-epsilon4 homozygotes had higher plasma insulin levels and reduced CSF-to-plasma ratios, whereas epsilon4 homozygotes with AD had normal values. Both plasma and CSF insulin levels are abnormal in AD, and there are metabolic differences among apolipoprotein E genotypes.
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关键词：
Humans Alzheimer Disease Insulin Apolipoproteins E Homozygote Aged Middle Aged Apolipoprotein E4
DOI：
10.1212/WNL.50.1.164
被引量：
年份：
1998
Semantic Scholar
万方医学
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