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- W323459593 abstract "16..cap alpha..-(/sup 77/Br)bromoestradiol-17..beta.. (compound 1) has been synthesized by radiobromination of estrone enoldiacetate. Tissue uptake studies performed 1 hr after administration of compound 1 to immature or mature female rats showed uterus-to-blood ratios of 13, with nontarget tissue-to-blood ratios ranging from 0.6 to 2. Co-administration of unlabeled estradiol caused a selective depression in the uterine uptake with no effect on nontarget tissue uptake. In adult animals bearing adenocarcinomas induced by DMBA (7,12-dimethylbenz(a)anthracene), tumor-to-blood ratios of 6.3 were obtained, this uptake also being depressed in animals treated with unlabeled estradiol. The studies demonstrate that compound 1 has suitable binding properties and sufficiently high specific activity so that its uptake in estrogen target tissues in vivo is mediated primarily by the estrogen receptor. Furthermore, they suggest that this compound may be suitable for imaging human breast tumors that contain estrogen receptors." @default.
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- W323459593 date "1981-01-01" @default.
- W323459593 modified "2023-09-22" @default.
- W323459593 title "16. cap alpha. -(/sup 77/Br)bromoestradiol-17. beta. : a high specific-activity, gamma-emitting tracer with uptake in rat uterus and induced mammary tumors" @default.
- W323459593 hasPublicationYear "1981" @default.
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