《Nature,3月30日,Antihypertensive treatment with ACEI/ARB of patients with COVID-19 complicated by hypertension》

  • 来源专题:COVID-19科研动态监测
  • 编译者: zhangmin
  • 发布时间:2020-03-31
  • Antihypertensive treatment with ACEI/ARB of patients with COVID-19 complicated by hypertension

    Gang Li, Rui Hu & Xuejiao Zhang

    Hypertension Research (2020)

    Currently, the novel coronavirus (COVID-19) has spread to many countries around the world. Due to the increasing number of confirmed cases and public hazards, COVID-19 has become a public health emergency of international concern and has received much attention from health organizations worldwide.

  • 原文来源:https://www.nature.com/articles/s41440-020-0433-1
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  • 《3月30日_COVID-19并发高血压患者利用ACEI/ARB进行降压治疗的策略》

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    • 编译者:zhangmin
    • 发布时间:2020-04-01
    • 1.时间:2020年3月30日 2.机构或团队:河北省人民医院、河北医科大学第二医院 3.事件概要: 河北省人民医院和河北医科大学第二医院的科研人员在Hypertension Research上发表文章“Antihypertensive treatment with ACEI/ARB of patients with COVID-19 complicated by hypertension”,分析了ACEI/ARB对COVID-19并发高血压患者的降压治疗应采取的措施。 文章提到,目前COVID-19的发病机理尚未阐明,一项初步研究推测它可能通过II型肺泡细胞表面的血管紧张素转化酶2(ACE2)进入人体。对COVID-19患者的临床特征的分析表明,高血压患者占所有患者的20–30%,重症监护病房中高达58.3%的高血压患者,并且由COVID-19导致的死亡占60.9%。肾素-血管紧张素系统(RAS)在高血压的发生和发展中起重要作用,ACE抑制剂(ACEIs)和血管紧张素受体拮抗剂(ARBs)是当前指南推荐的主要降压药。 文章首先分析了ACE2与COVID-19之间的关系,提到ACE2可能是COVID-19的细胞受体,但是否是唯一的细胞受体仍有待进一步研究。作者介绍了ACE2和ACE的生物学特性,在RAS中,肾素将血管紧张素水解为血管紧张素I(Ang I),随后被ACE转化为Ang II,Ang II与血管平滑肌细胞膜上的血管紧张素受体1(AT1R)结合,从而产生多种作用包括血管收缩和血管重塑。ACE2可以将Ang I水解为非活性Ang1-9,并将Ang II水解为Ang1-7。Ang1–7可能对Mas受体起作用,在心血管保护中发挥作用,包括血管舒张,抗增殖和抗氧化应激。因此,这表明,在体内,ACE-Ang II-AT1R轴和ACE2-Ang1-7-MAS轴可作为维持体内稳态的平衡和平衡。ACE2在II型肺泡(AT2)细胞中的高表达可以解释COVID-19感染后观察到的严重肺泡损伤现象,并为将来制定新的冠状病毒性肺炎治疗策略提供参考。 随后文章分析了RAS抑制剂对ACE2的影响,目前,已知RAS抑制剂对ACE2的作用主要归因于心脏,肾脏和血浆中ACE2的表达,并且尚不完全了解RAS抑制剂是否可以影响气道上皮细胞中ACE2的表达。另外,高血压患者中ACE2的表达可能低于血压正常者。迄今为止,尚无证据表明使用RAS抑制剂可使患者更容易感染该病毒。但是,另一项研究表明,ACEI或ARB处理可能下调ACE2的表达,但对其活性没有明显影响。作者分析了ACE2基因表达与酶活性之间的相关性,认为血管紧张素可能参与了一个更复杂的信号传导机制,ACEI /血管紧张素II受体拮抗剂(ARB)可以通过它调节ACE2的基因表达和活性。在ACE2表达水平与病毒感染的严重程度的关系方面,最近的一项研究表明,不是从ACE2高表达的患者中分离出SARS-CoV,这表明病毒感染过程可能还需要其他受体或辅因子,此外需要进一步的研究来阐明高血压药物是否会改变人肺组织中ACE2的基因表达和活性,从而影响新型冠状病毒性肺炎的疾病预后。 最后文章得出结论,尽管尚无关于COVID-19与RAS抑制剂相关联的结论,但RAS抑制剂可影响组织中ACE2 mRNA的表达和ACE2的活性。从理论上讲,ACE2可能会促进COVID-19的增殖并增强其感染能力。因此,迫切需要进行大规模的临床研究,以探索高血压患者的COVID-19敏感性和用RAS抑制剂治疗的相应治疗策略。 4.附件: 原文链接: https://www.nature.com/articles/s41440-020-0433-1
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    • 编译者:zhangmin
    • 发布时间:2021-02-01
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