结合 angiotensin II 和内甲素受体阻塞与心力衰竭的作用:对左心室功能的影响
R B New1, A C Sampson, M K King
1Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston 29425, USA.
Circulation
|September 20, 2000
概括
结合阻断血管新素II类型1 (AT(1) 和内甲素-1 (ET) 受体,改善左心室 (LV) 功能. 在充血性心力衰竭 (CHF) 模型中. 这种方法为CHF患者提供了潜在的治疗策略.
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.
- 心脏衰竭研究研究
背景情况:
- 充血性心力衰竭 (CHF) 涉及到心脏功能和神经激素系统的复杂变化.
- 血管新素II型1 (AT(1)) 和内甲素-1 (ET) 受体在心血管调节和CHF的病理生理学中发挥着关键作用.
研究的目的:
- 为了比较单独抑制AT{1}受体,单独阻断ET受体,以及在CHF模型中对左心室 (LV) 功能的联合阻断的影响.
- 评估这些干预措施对心肌收缩性和神经激素活动的影响.
主要方法:
- 使用了由快速心房节奏诱导的猪模型的CHF.
- 动物被随机分为五组:快速节奏,AT(1) 阻塞+节奏,ET阻塞+节奏,组合阻塞+节奏和假控制.
- 测量了左心室功能,中风量,峰值壁应力,北上腺素水平和肌细胞缩短速度.
主要成果:
- 结合AT(1) 和ET受体阻塞与单独单独治疗或节拍相比,显著改善了LV中风体积.
- ET受体阻塞,单独或组合,减少了LV峰壁应力.
- 联合阻塞使高血北上腺素水平正常化,并恢复了LV肌细胞缩短速度到控制水平.
结论:
- 结合AT(1) 和ET受体阻塞在这个CHF模型中有效地改善了LV功能.
- 益处归因于对LV负载条件,神经激素活性和心肌收缩率的有利影响.
- 结合性受体阻塞是治疗充血性心力衰竭的一个有希望的治疗策略.
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