在COVID-19中RAAS受体和miRNAs的调节:对疾病严重程度,免疫反应和潜在的治疗点的影响
Thais Freitas Barreto Fernandes1, Jose Henrique Pilotto1, Priscila Alves Cezar1
1Laboratório de AIDS e Imunologia Molecular, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brasil.
BMC infectious diseases
|March 25, 2025
概括
COVID-19的严重程度与氨酸- ангиотензин-阿尔多斯特系统 (RAAS) 的变化有关. 像ACE2和MAS1这样的RAAS受体的减少表达,以及特定的微RNA,与COVID-19患者的疾病严重程度和较差的结果相关.
科学领域:
- 心血管生物学 心血管生物学
- 传染病的发病因子 传染病的发病因子
- 分子医学是分子医学.
背景情况:
- SARS-CoV-2病毒与ACE2受体相互作用,ACE2受体是氨酸-氨酸-阿尔多斯特系统 (RAAS) 的一个组成部分.
- RAAS对于血管平衡,血压调节和炎症控制至关重要.
- RAAS的失调与各种疾病状态有关,包括严重的COVID-19.
研究的目的:
- 在住院COVID-19患者中研究RAAS受体和相关的微RNA (miRNA) 的基因表达特征.
- 评估RAAS组件,miRNA和COVID-19疾病严重程度,包括氧气需求和死亡率之间的相关性.
- 探索RAAS调制对炎症的影响以及潜在的治疗策略.
主要方法:
- 观察性研究分析RAAS受体和miRNAs的基因表达特征.
- 88名住院COVID-19患者 (急性和后急性阶段) 与20名健康对照人群之间的比较.
- 统计分析以确定基因表达,临床参数和疾病结果之间的关联.
主要成果:
- 减少MAS1表达与晚年和需要补充氧气有关.
- 降低ACE表达与较差的死亡结果相关.
- 在严重的COVID-19病例中观察到ACE2,TMPRSS2,miR-200c,miR-let-7和miR-122的显著下调,特别是那些需要氧气或患有糖尿病的人.
结论:
- 在COVID-19期间,ACE2/Ang-(1-7) /MAS1轴在调节炎症方面发挥着重要作用.
- RAAS受体和miRNAs的失调与COVID-19的严重程度和炎症反应有关.
- 针对RAAS途径和监测RAAS组件/miRNAs可能提供治疗潜力,并作为COVID-19的生物标志物.
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