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醛固酮受体拮抗剂及醛固酮合酶抑制剂的研究进展

2019-02-13王雨宁郭晔堃钟静芬

上海医药 2019年1期

王雨宁 郭晔堃 钟静芬

摘 要 已有甾体类醛固酮受体拮抗剂即螺内酯和依普利酮上市,但是两者均存在一定不足。非甾体的小分子化合物作为新一代的醛固酮受体拮抗剂,finerenone、esaxerenone等都已进入临床阶段,特别是finerenone,基础研究和临床研究显示出较优的安全性和有效性,在降低高钾血症和肾功能损伤方面具有独特的优势。此外,从醛固酮生物合成途径入手,靶标醛固酮生物合成过程中的关键酶即醛固酮合酶(CYP11B2),开发选择性的CYP11B2抑制剂也是当前研究的热点。

关键词 醛固酮 醛固酮受体 醛固酮合酶 抑制剂

中图分类号:R962 文献标志码:A 文章编号:1006-1533(2019)01-0056-06

Research progress in aldosterone receptor antagonists and aldosterone synthase inhibitors

WANG Yuning*, GUO Yekun**, ZHONG Jingfen

(China State Institute of Pharmaceutical Industry, Shanghai 201203, China)

ABSTRACT Although aldosterone receptor antagonists, such as spironolactone and eplerenone, are available, there still exist some disadvantages. Non-steroidal small molecules have been taken as a novel generation for aldosterone receptor antagonists. Finerenone and esaxerenone are all in clinical trial stage at present, especially for finerenone, its excellent safety and effectiveness have been verified by the basic and clinical studies, which has a unique advantage in lower hyperkalemia and renal injury. In addition, it was found that aldosterone synthase (CYP11B2) is the key one for aldosterone biosynthesis from the perspective of the aldosterone biosynthesis pathway. Nowadays, the development of selective CYP11B2 inhibitors is also a research hotspot.

KEy WORDS aldosterone; aldosterone receptor; aldosterone synthase; inhibitor

1 醛固酮的生理病理作用

人類肾上腺皮质球状带区域分泌有盐皮质激素,醛固酮是一种盐皮质激素,能促进肾远曲小管对钠离子、氯离子的重吸收和增加钾离子、氢离子的排出,具有明显的潴钠排钾的作用。醛固酮可以通过提升肾远曲小管对钠离子的重吸收来调控血压。在正常生理条件下,醛固酮的分泌受肾素-血管紧张素-醛固酮系统(RAAS)调节,另外心血管独立存在的醛固酮形成系统也可以使醛固酮以自分泌和旁分泌的形式在局部发挥作用。

醛固酮水平过高会造成心肌及血管间质纤维化,导致心室重构,血管壁增厚,大动脉顺应性降低,心脏功能恶化,使组织传导不均一,引发心律失常[1]。醛固酮还可以阻断心肌细胞对儿茶酚胺的摄取,使细胞外儿茶酚胺增加,加重心肌缺血[2]。有研究表明醛固酮含量过高时会诱发白细胞浸润并会造成冠状动脉损伤以及心肌缺血性坏死。……

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