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In vivo effects by estrone sulfate on the central nervous system-senile dementia (Alzheimer's type).

Seven women with senile dementia-Alzheimer's type (SDAT) were treated with conjugated estrogen [main content: estrone sulfate (E1-S)], at a dose of 1.25 mg/day over a 6-week period. A New Screening Test for Dementia developed by Japanese National Institute of Mental Health (NS) and the scores of Hasegawa Scale for dementia (HS) were performed every 3 weeks. Six women showed improvements in NS (P less than 0.05) and 5 women showed improvements in HS. Untreated women with SDAT did not show any improvement. Serum E1-S was measured by a direct radioimmunoassay. Serum E1-S was 911 +/- 156 pg/ml in 7 women with SDAT and lower than that of 7 normal women (1020 +/- 216 pg/ml). Following the treatment, serum E1-S increased to a level of 21.1 +/- 8.1 ng/ml. Estrone and estradiol-17 beta also increased. The results suggest a possibility for the future clinical use of estrogen for senile dementia, after careful clinical research trials including the side effects.