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选择性雌激素受体调节剂 总被引:2,自引:0,他引:2
对选择性雌激素受体调节剂(SERM)的定义、作用机制及其临床研究应用进行了概述,介绍了SERM在不同的靶组织可以表现为雌激素激动剂和(或)拮抗剂的作用,雌激素的作用模型及其与SERM的不同作用靶位,各类SERM的临床应用情况和发展前景。 相似文献
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选择性雌激素受体调节剂 总被引:4,自引:0,他引:4
本文概述了选择性雌激素受体调节剂作用的分子生物学基础;主要介绍了三苯乙烯类化合物他莫昔芬,托瑞米芬、等治疗绝经后妇女乳乳腺、防治骨质疏松及对子宫、心血管系统方面的作用,并且指出寻找新的SERM的正确方向和方法。 相似文献
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雌激素受体和选择性雌激素受体调节剂的研究进展 总被引:5,自引:0,他引:5
雌激素受体属于核受体超家族成员,是一类重要的核转录因子,它在生殖系统、骨组织、心血管和中枢神经系统中发挥着重要的生理作用,是治疗骨质疏松和乳腺癌的重要药物作用靶标.已知的雌激素受体有α和β两种亚型,它们由两个不同的基因编码组成.选择性雌激素受体调节剂是一类在不同的组织细胞中对雌激素受体发挥不同调节作用的化合物,用于治疗绝经后妇女的骨质疏松和乳腺癌等.对近年来有关这两方面的研究情况进行综述. 相似文献
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选择性雌激素受体调节剂有关药物的研究进展 总被引:3,自引:0,他引:3
绝经期约占妇女生命周期的1/3。绝经后妇女体内雌激素分泌量减少,血浆中的173-雌二醇量不到绝经前的10%,因而出现一系列更年期综合征证症状,以及引起骨密度下降并导致骨质疏松,绝经后的妇女还有患慢性心血管疾病的危险[1]. 雌激素替代疗法(EstrogenReplacement Therapy.ERT)在过去的二十多年中.一直用来补充绝经后妇女雌激素的分泌不足,改善更年期综合征症状,预防骨质疏松发生或防止病情加重.能将因雌激素缺乏引发的慢性心血管疾病的发病率至少降低40%,但中断治疗后作用效果会… 相似文献
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郑阳钒;周海兵﹡ 《中国药物化学杂志》2012,22(3):236-245
近年来金属有机化学的研究发展迅速,很多金属有机类化合物常常可以产生常规有机化合物所不具有的一些意外的药效作用,因此,在很多药物分子结构中都引入了金属基团。为了提高乳腺癌的治愈率,世界各地的研究小组把一些活性金属基团引入到一些具有潜在抗乳腺癌活性的分子中,形成了一类独特的金属有机类选择性雌激素受体调节剂(selective estrogen receptor modulators, SERMs),在研究过程中发现多个系列的金属有机类SERMs在脂溶性、与受体的结合力以及抑制乳腺癌细胞增殖等方面都表现出一定的优势。该文对近年来金属有机类SERMs的研究成果进行综述。 相似文献
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雌激素受体和选择性雌激素受体调节剂相互作用的分子模拟 总被引:2,自引:1,他引:2
目的:研究一类高活性消旋化的雌激素受体调节剂与其受体间的相互作用机制.方法:分子力学优化的方法获得这类刚性的raloxifene类似物的活性构象,受体与配基间的相互作用能用分子对接程序计算.结果:化合物的R和S构型均可进入雌激素受体的结合腔.其羟基直接与受体氨基酸形成氢键,其酚环相当于雌激素的A环.活性最好的配基带有两个羟基,并已模拟雌激素A环为含16位羟基的酚环的S构型化合物.结论:消旋化对该类化合物的活性影响不大.羟基对于化合物在活性11袋中的取向及与受体的结合有着重要意义. 相似文献
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《Expert opinion on pharmacotherapy》2013,14(8):1377-1385
Bazedoxifene acetate (WAY-140424; TSE-424) is an oral, nonsteroidal, indole-based selective estrogen receptor modulator (SERM) being developed for the prevention and treatment of osteoporosis. Preclinical studies on bazedoxifene have demonstrated estrogen agonist effects on the skeleton and lipid metabolism but not on breast and uterine endometrium. In combination with estrogen, bazedoxifene antagonizes the stimulatory action of estrogens on proliferation of breast cancer cells and endometrium. Phase III clinical studies have shown favorable effects on the skeleton without stimulation of endometrium and breast. Bazedoxifene prevents bone loss in postmenopausal women without osteoporosis and reduces vertebral fractures in women with postmenopausal osteoporosis. In women at high risk of fracture with multiple risk factors, bazedoxifene reduces nonvertebral fracture risk in post-hoc analysis. Bazedoxifene in combination with conjugated estrogens represents a new form of therapeutic agents for the treatment of postmenopausal symptoms and prevention of postmenopausal osteoporosis. Clinical trials with bazedoxifene/conjugated estrogens have shown beneficial effects on bone mineral density and bone turnover markers with improvement in vasomotor symptoms and little or no stimulation of breast and endometrium. 相似文献
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Pharmacokinetics of selective estrogen receptor modulators 总被引:4,自引:0,他引:4
Selective estrogen receptor modulators (SERMs) are a class of compounds used to treat and prevent breast cancer and osteoporosis. SERMs currently approved for use in patients include tamoxifen, toremifene and raloxifene. These compounds are well tolerated in patients, and the most common adverse effects experienced in patients undergoing SERM therapy include vasomotor symptoms such as hot flashes and vaginal discharge. New SERMs currently under development for use in the treatment and prevention of osteoporosis and breast cancer include ospemifene, a derivative of toremifene, and arzoxifene, a compound very similar in structure to raloxifene. SERMs are administered orally at doses ranging from 20 to 60 mg/day. Tamoxifen and toremifene have a bioavailability of approximately 100%, whereas that of raloxifene is only 2%. SERMs are very highly bound to plasma proteins (>95%). Tamoxifen and toremifene are metabolised by the cytochrome p450 enzyme system, and raloxifene is metabolised by glucuronide conjugation. The terminal elimination half-lives of these drugs range from 27.7 hours to 7 days. The pharmacokinetics of these compounds are affected in hepatically impaired patients, but not in renally impaired patients. SERMs have several potential drug interactions with other agents, such as warfarin, rifampicin (rifampin), cholestyramine and aromatase inhibitors. 相似文献