首页> 外文会议> >Effects of potassium channel openers nicorandil and pinacidil on electrical activity of cardiac cells and cardiac tissues: a simulation study
【24h】

Effects of potassium channel openers nicorandil and pinacidil on electrical activity of cardiac cells and cardiac tissues: a simulation study

机译:钾通道开放剂尼可地尔和吡那地尔对心脏细胞和心脏组织电活动的影响:模拟研究

获取原文

摘要

Potassium channel openers (KCOs) have been reported to activate ATP-sensitive potassium channels (K/sub (ATP)/) in cardiac muscle. The activation of this current accelerates the process of repolarisation of the cell and shortens the action potential duration (APD). In this study the authors analyse whether this effect is proarrhythmic or not. Indeed, there is a big controversy; in this sense supported by several studies. Based on experimental data, the authors formulated a mathematical description of the effects of two KCOs (pinicidil and nicorandil) on the ATP-sensitive potassium current. These models were introduced in a ventricular myocyte action potential description to carry out unicellular and multicellular simulations. Our results suggest that pinacidil shortens APD further than nicorandil, as reported in several experimental works. In a cellular tissue, both drugs increase the probability of unidirectional block and thus reentry.
机译:据报道,钾通道开放剂(KCO)可以激活心肌中ATP敏感的钾通道(K / sub(ATP)/)。该电流的激活加速了细胞的复极化过程,并缩短了动作电位持续时间(APD)。在这项研究中,作者分析了这种作用是否是心律失常的。确实,存在着很大的争议。从这个意义上说,有几项研究支持。基于实验数据,作者对两种KCO(吡尼地尔和尼可地尔)对ATP敏感的钾电流的作用进行了数学描述。将这些模型引入心室肌细胞动作电位描述中,以进行单细胞和多细胞模拟。我们的研究结果表明,如在一些实验研究中所报道的那样,吡那地尔比尼可地尔更能缩短APD。在细胞组织中,两种药物都会增加单向阻塞的可能性,从而增加折返的可能性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号