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- W1973636130 abstract "To evaluate the integrity of neurons and neuropil in metabolically affected association cortices of patients with Alzheimer's disease by measuring central benzodiazepine binding sites with the use of positron emission tomography.In patients with Alzheimer's disease, we determined the cerebral distribution of flumazenil tagged with carbon 11 ([11C]flumazenil), a ligand that binds to the gamma-aminobutyric acid A (GABAA) receptor complex, and the distribution of fludeoxyglucose tagged with fluorine 18 fludeoxyglucose F 18), a measure of local cerebral glucose metabolism. Tracer kinetic analysis was applied to quantify data in regions of interest. These data were compared with those of normal control subjects.Patients with probable Alzheimer's disease ([11C]flumazenil, n = 13; fludeoxyglucose F 18, n = 11) and normal elderly control subjects ([11C]flumazenil, n = 6; fludeoxyglucose F 18, n = 10).Significant decreases of the [11C]flumazenil transport rate were found in hypometabolic parietal and temporal association cortices, but [11C]flumazenil binding was not significantly decreased.When measured in living patients, association cortical benzodiazepine binding sites are relatively preserved, suggesting structurally intact cortical neuropil underlying the glucose hypometabolism identified in Alzheimer's disease." @default.
- W1973636130 created "2016-06-24" @default.
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- W1973636130 date "1995-03-01" @default.
- W1973636130 modified "2023-09-25" @default.
- W1973636130 title "Positron Emission Tomography Measures of Benzodiazepine Binding in Alzheimer's Disease" @default.
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- W1973636130 doi "https://doi.org/10.1001/archneur.1995.00540270110027" @default.
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