低氧诱导因子激活剂,roxadustat,增加了小鼠的肺血管抵抗
T Novák1, M Žaloudíková, P Smolková
1Department of Physiology, Second Faculty of Medicine, Charles University, Prague 5, Czech Republic. vaclav.hampl@lfmotol.cuni.cz.
Physiological research
|January 2, 2024
概括
作为低氧诱导因子 (HIF) 激活剂的罗克萨斯达特可能会增加肺血管抵抗力. 关于大鼠肺部的研究表明,在短期使用roxadustat时,肺高血压的风险较低,但建议对其进行监测.
科学领域:
- 心血管生理学心血管生理学
- 药理学 药理学是指药理学的学科.
- 贫血治疗方法 贫血治疗方法
背景情况:
- 低氧诱导因素 (HIF) 调节肺循环.
- 罗沙杜沙特激活HIFs,是潜在的贫血治疗药物.
- 罗沙沙斯塔特对肺血管耐药性的影响需要进行研究.
研究的目的:
- 为了研究罗克萨杜斯塔特对肺血管抵抗和血管缩剂反应性的作用.
- 评估通过roxadustat.stat.抑制血管酶转化酶2 (ACE2) 的潜在作用.
主要方法:
- 使用隔离的,无细胞溶液 perfused 的老鼠肺部.
- 进行了罗沙杜沙特治疗 (10 mg/kg每隔一天,持续2周).
- 评估了 perfusion 压力-流量曲线,血管新生素 II 和急性缺氧挑战.
主要成果:
- 罗克萨杜沙特治疗将 perfusion 压力流动曲线转移到更高的压力.
- 血管缩剂对血管素II和急性缺氧的反应性没有受到roxadustat的改变.
- 迪米纳乙酸盐 (DIZE),一种ACE2激活剂,诱发了无法解释的肺血管收缩.
结论:
- 短期使用罗沙杜沙特 (14天) 有较低的严重肺高血压风险.
- 在roxadustat治疗期间,建议对肺高血压进行监测.
- 需要进一步的研究来了解ACE2调节对肺部的影响.
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