: selective estrogen receptor modulatorDramatic research findings have recently focused new attention on so-called designer estrogens, the medicines known more technically as selective estrogen receptor modulators (SERMs). These agents behave like estrogen in some tissues but block its action in others.— V. Craig Jordan, Scientific American, October 1998The structural features of each SERM differ so that unique ligand-induced conformational changes take place in the ER [estrogen receptor], which are thought to be the likely basis for tissue-selective pharmacology. For example, raloxifene operates as an estrogen agonist in bone but as an antagonist in the breast and uterus.— Gideon A. Rodan et al., Science, 1 Sept. 2000
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