Influences of rapid pacing-induced electrical remodeling on pharmacological manipulation of the atrial refractoriness in rabbits.

Influences of rapid pacing-induced electrical remodeling on pharmacological manipulation of the atrial refractoriness in rabbits.
复制标题

快速起搏引起的电重塑对家兔心房不应期药理学操作的影响。

DOI:
10.1016/j.jphs.2016.02.007
复制
发表时间:
2016
影响因子:
3.5
通讯作者:
Takahara A.
Takahara A.
中科院分区:
医学3区
文献类型:
--
作者:
Chiba T;Kondo N;Takahara A.

文献摘要

参考文献

相似文献

电重塑在维持心房颤动期间的折返方面发挥着关键作用。在这项研究中,我们评估了电重构对家兔心房不应期药理学操作的影响。我们使用兔子的心房电重塑模型,对其进行快速心房起搏(RAP;600 次/分钟)2-4 周,从而缩短心房有效不应期 (AERP)。静脉注射 dl-索他洛尔 (6 mg/kg)、贝普地尔 (1 mg/kg)、胺碘酮 (10 mg/kg) 或维那卡兰 (3 mg/kg) 显着延长对照兔和 RAP 兔的 AERP。 RAP 兔子的程度与对照动物相似。另一方面,静脉注射雷诺嗪 (10 mg/kg) 或特硫平 Q (0.03 mg/kg) 对 RAP 兔子 AE​​RP 的延长作用比对照动物更有效。这些结果表明,与临床可用的抗心律失常药物dl-索他洛尔、贝普地尔胺碘酮和维那卡兰相比,快速起搏引起的电重构有效地改变了雷诺嗪和特硫平-Q对AERP的延长作用。
Electrical remodeling plays a pivotal role in maintaining the reentry during atrial fibrillation. In this study, we assessed influence of electrical remodeling on pharmacological manipulation of the atrial refractoriness in rabbits. We used an atrial electrical remodeling model of the rabbit, subjected to rapid atrial pacing (RAP; 600 beats/min) for 2–4 weeks, leading to shortening of atrial effective refractory period (AERP). Intravenous administration ofdl-sotalol (6 mg/kg), bepridil (1 mg/kg), amiodarone (10 mg/kg) or vernakalant (3 mg/kg) significantly prolonged the AERP both in the control and RAP rabbits. The extents in the RAP rabbits were similar to those in the control animals. On the other hand, prolonging effects of intravenously administered ranolazine (10 mg/kg) or tertiapin-Q (0.03 mg/kg) on the AERP in the RAP rabbits were more potent than those in the control animals. These results suggest that rapid pacing-induced electrical remodeling effectively modified the prolonging effects of ranolazine and tertiapin-Q on the AERP in contrast to those of clinically available antiarrhythmic drugs,dl-sotalol, bepridil amiodarone and vernakalant.
贝普地尔、地尔硫卓、硝苯地平和维拉帕米对麻醉犬血流动力学参数和心肌耗氧量的比较影响。
DOI: --
发表时间: 1986
影响因子: --
作者:
M. Beaughard;M. Michelin;J. Tisne;J. Lamar
通讯作者: J. Lamar
心肌细胞中乙酰胆碱激活的钾电流 IK,ACh 的组成活性。
DOI: 10.1016/b978-0-12-417197-8.00013-4
发表时间: 2014
影响因子: --
作者:
N. Voigt;I. Abu;J. Heijman;D. Dobrev
通讯作者: D. Dobrev
DOI: 10.1111/j.1540-8167.2005.50028.x
发表时间: 2005-11-01
影响因子: 2.7
作者:
Fedida, D;Orth, PMR;Beatch, GN
通讯作者: Beatch, GN
DOI: 10.1067/mhj.2001.109952
发表时间: 2001
影响因子: 4.8
作者:
S. Lévy
通讯作者: S. Lévy
DOI: 10.1097/hjh.0b013e3282f5ed44
发表时间: 2008
影响因子: 4.9
作者:
Guata Yoro Sy;D. Urošević;L. Fellmann;H. Greney;P. Bousquet;J. Feldman
通讯作者: J. Feldman