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相关概念视频

In-vitro Mutagenesis01:16

In-vitro Mutagenesis

To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.

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相关实验视频

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性纤维化转膜导电调节器化通道基因的向性失活,可以防止隔离的小鼠心脏中缺血预条件的发生.

Hong Chen1, Luis L Liu, Linda L Ye

  • 1Department of Pharmacology, Center of Biomedical Research Excellence, University of Nevada School of Medicine, Reno, NV 89557-0270, USA.

Circulation
|August 4, 2004
PubMed
概括
此摘要是机器生成的。

囊性纤维化跨膜导电调节器 (CFTR) 化通道对于小鼠心脏的缺血预条件 (IPC) 是至关重要的. 阻止或去除CFTR可以防止IPC对心脏损伤的保护作用.

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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
  • 缺血性心脏病是一种心脏病.

背景情况:

  • 缺血预先调节 (IPC) 能够保护心肌缺血-再输血损伤.
  • 化通道与IPC的机制有关.
  • 囊性纤维化转膜导电调节器 (CFTR) 是心脏表达的关键化物通道.

研究的目的:

  • 研究CFTR化通道在隔离小鼠心脏制剂中调解IPC的保护作用中的作用.
  • 为了确定基因删除或CFTR的药理抑制是否取消IPC诱导的心脏保护.

主要方法:

  • 从野生型 (WT) 和CFTR淘汰赛 (CFTR-/-) 小鼠中分离出来的心脏接受了与IPC或没有IPC的缺血-再输血协议.
  • 用血液动力学指数评估心脏功能.
  • 通过测量肌酸酸激酶 (CPK) 释放和心脏病发作大小来评估心肌损伤.
  • 使用CFTR通道阻断剂gemfibrozil来评估药理抑制.

主要成果:

  • 在WT小鼠心脏中,IPC显著保护了心脏功能,并减少了心肌损伤.
  • 用gemfibrozil对CFTR的药理学阻断取消了IPC的心脏保护作用.
  • 在CFTR-/-小鼠中针对CFTR基因的向性失活阻止了IPC诱导的对心脏功能障碍和损伤的保护.

结论:

  • CFTR 化物通道在中介IPC在小鼠心脏中的保护作用方面发挥了关键和新的作用.
  • 在缺血事件期间,CFTR代表了增强心脏保护的潜在治疗标.