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来曲唑

来曲唑
CAS Number: 112809-51-5 

来曲唑

治疗类别
抗癌/抗肿瘤
API技术
合成
剂型
口服固体制剂
瑞迪博士研发状态
可得到
注册备案情况
USA
Canada
CEP
Japan
CEP
创新品牌(美国)
Femara

Mechanism of Action

The growth of some cancers of the breast is stimulated or maintained by estrogens. Treatment of breast cancer thought to be hormonally responsive (i.e., estrogen and/or progesterone receptor positive or receptor unknown) has included a variety of efforts to decrease estrogen levels (ovariectomy, adrenalectomy, hypophysectomy) or inhibit estrogen effects (antiestrogens and progestational agents). These interventions lead to decreased tumor mass or delayed progression of tumor growth in some women. In postmenopausal women, estrogens are mainly derived from the action of the aromatase enzyme, which converts adrenal androgens (primarily androstenedione and testosterone) to estrone and estradiol. The suppression of estrogen biosynthesis in peripheral tissues and in the cancer tissue itself can therefore be achieved by specifically inhibiting the aromatase enzyme. Letrozole is a nonsteroidal competitive inhibitor of the aromatase enzyme system; it inhibits the conversion of androgens to estrogens. In adult nontumor- and tumor-bearing female animals, letrozole is as effective as ovariectomy in reducing uterine weight, elevating serum LH, and causing the regression of estrogen-dependent tumors. In contrast to ovariectomy, treatment with letrozole does not lead to an increase in serum FSH. Letrozole selectively inhibits gonadal steroidogenesis but has no significant effect on adrenal mineralocorticoid or glucocorticoid synthesis. Letrozole inhibits the aromatase enzyme by competitively binding to the heme of the cytochrome P450 subunit of the enzyme, resulting in a reduction of estrogen biosynthesis in all tissues. Treatment of women with letrozole significantly lowers serum estrone, estradiol and estrone sulfate and has not been shown to significantly affect adrenal corticosteroid synthesis, aldosterone synthesis, or synthesis of thyroid hormones.

Dr. Reddy's的专长

Dr. Reddy's总部位于印度海得拉巴,是全球领先的活性药物成分(API)供应商之一。 Dr. Reddy's的API业务是美国、欧洲、巴西、拉丁美洲、日本、中国、韩国和新兴市场的制药公司的首选合作伙伴。

Dr. Reddy's博士的API业务在过去30多年来在开发和制造复杂API(如类固醇,多肽,复杂长链分子和高效API(HPAPI /肿瘤药物))方面所建立的深厚技术优势中茁壮成长。 我们在知识产权和法规事务方面的实力可以帮助我们始终如一地达到并超越监管标准,从而为这一专业知识提供补充。 Dr. Reddy's博士 来曲唑 API是研发,知识产权和监管方面广泛专业知识的结果。

帮助我们的客户率先进入市场的关键组成部分是响应式供应链。 我们通过确保所有设施都高效运行并达到最新的质量,安全和生产率标准来实现这一目标。 业务和工厂之间的强大互联可以快速响应动态的市场变化,从而避免短缺并满足需求的突然激增。

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