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在布拉迪基宁B2受体淘汰赛小鼠中扩大和失败的心肌病
C Emanueli1, R Maestri, D Corradi
1National Laboratory of the National Institute of Biostructures and Biosystems, Osilo, Italy.
Circulation
|December 11, 1999
概括
缺乏布拉迪基宁B(2) 受体的小鼠患有高血压和显著的心脏变化,表明基因因对维持心脏结构和功能至关重要.
科学领域:
- 心血管生理学心血管生理学
- 分子心脏病学分子心脏病学
- 药理学 药理学是指药理学的学科.
背景情况:
- 布拉迪基宁B(2) 受体与肌肉心脏缺血和心力衰竭期间的心脏保护有关.
- 通过B(2) 受体激活,基宁可能在心脏健康方面发挥作用.
研究的目的:
- 研究布拉迪基宁B2受体缺失对心脏结构和功能的影响.
- 为了评估血压,心率和心脏形态的发育变化,在B2受体淘汰赛小鼠中.
主要方法:
- 研究了布拉迪基宁B2受体基因淘汰 (B2) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 和野生型 (B2) - - - - - - - - - - - - +/+)) 的小鼠.
- 随着时间的推移,监测血压,心率和心脏形态.
- 分析了左心室 (LV) 的重量,腔室体积和压力.
主要成果:
- B(2)(-/-) 小鼠在50天左右开始发展渐进性高血压.
- 40天后在B(2)(-/-) 和B(2)(+/-) 小鼠中观察到心率升高.
- 在B(2)(-/-) 小鼠中观察到加速的LV生长,腔室扩张,LV末端透气压的增加和纤维化.
结论:
- 勃拉迪基宁B2受体的干扰导致高血压和不良的左心室重塑.
- 这些发现凸显了基因因在维护心脏功能和结构方面的重要作用.
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