Nat Med:老牌降压药的“新用途”:治疗1型糖尿病

2018-07-16 佚名 生物探索

“老药新用”是药物研发中“喜闻乐见”的一种情况。近期,《Nature Medicine》期刊上新发表的一篇文章揭示了一款常规降压药的新用途——1981年获批的维拉帕米(verapamil)被证实适用于1型糖尿病,并已在小规模临床试验中展现出喜人的结果。

1型糖尿病是一种免疫系统疾病,源自免疫系统攻击胰腺中的胰岛β细胞。后者是分泌胰岛素、调控血糖平衡的关键细胞。一旦β细胞遭受破坏,患者容易缺乏足够的激素来控制血糖水平。

现在,来自于美国阿拉巴马大学的科学家们最新证实,维拉帕米(verapamil)可以促进1型糖尿病患者体内的β细胞发挥功能、分泌胰岛素。研究团队进行了随机、双盲、安慰剂对照的临床试验,结果显示,维拉帕米是一种安全、有效、有希望的糖尿病治疗方法,可以减少患者对于胰岛素治疗的依赖。这预示着,这一款治疗高血压的老药有望发挥新用途。

团队负责人、UAB综合糖尿病中心主任Anath Shalev表示,“虽然这并不是治疗1型糖尿病的万灵药,但是这些发现让我们更接近纠正疾病的疗法,从而让患者能够自己维持体内的胰岛素分泌。”

降压药的新用途

早在2014年,Anath Shalev团队就已在动物试验中发现了维拉帕米“完全逆转1型糖尿病”的能力,并试图进行临床试验。

在最新的研究中,他们招募了24名年龄范围在18-45岁的患者参加为期1年的临床试验。其中,有11名患者会接受维拉帕米治疗,13名患者接受安慰剂。这些1型糖尿病患者均在确诊后的3个月内启动了临床试验,并且在试验期间继续使用胰岛素注射治疗。

研究人员会记录两组成员每日的总胰岛素注射剂量、产生的胰岛素量、胰岛素产量的百分比变化以及血红蛋白水平。此外,他们会通过持续血糖监测系统分析每个患者血糖维持在健康水平的时间比例。

结果显示,当患者服用维拉帕米后,β细胞功能得以保留,从而可以分泌更多的胰岛素。这一药物减轻了受试者对于胰岛素的需求。

下一步

“我们会继续开展临床试验,在此基础上进一步弄清楚维拉帕米在何时、对何种类型的患者影响最大。” Anath Shalev规划道。

“虽然这是一个较小的样本量,但是结果依然带来了希望。”共同首席研究员Fernando Ovalle主任表示道。维拉帕米除了帮助患者减少胰岛素依赖之外,还会积极影响他们的生活质量,减少其他并发症的风险,包括心脏病、失明、肾病等。

同时,他强调,未来还需要更大规模的临床研究,以确定维拉帕米对儿童患者以及确诊时间超过3个月的患者的有效性。此外,他们还将评估维拉帕米对2型糖尿病的积极影响。

原始出处:

Fernando Ovalle, Tiffany Grimes, Guanlan Xu, et al. Verapamil and beta cell function in adults with recent-onset type 1 diabetes. Nature Medicine (2018) .

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    2018-11-14 liye789132251
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    2018-07-16 misszhang

    谢谢MedSci提供最新的资讯

    0

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    2018-07-16 kafei

    学习了谢谢

    0

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