標題: Selective and non-selective non-steroidal anti-inflammatory drugs differentially regulate pulmonary vein and atrial arrhythmogenesis
作者: Chang, Chien-Jung
Cheng, Chen-Chuan
Yang, Ten-Fang
Chen, Yao-Chang
Lin, Yung-Kuo
Chen, Shih-Ann
Chen, Yi-Jen
生物科技學系
Department of Biological Science and Technology
關鍵字: Celecoxib;Indomethacin;Atrial fibrillation;Pulmonary vein;Atrium;Ranolazine
公開日期: 1-四月-2015
摘要: Background: Non-steroidal anti-inflammatory drugs (NSAIDs) increase the risk of atrial fibrillation (AF). This study investigated whether selective and non-selective NSAIDs differentially regulate the arrhythmogenesis of pulmonary veins and atria. Methods: Conventional microelectrodes were used to record action potentials (APs) in isolated rabbit PVs, sinoatrial node (SAN), left atrium (LA), and right atrium (RA) preparations before and after celecoxib or indomethacin administration. A whole-cell patch clamp was used to record the sodium-calcium exchanger (NCX) current, L-type calcium current (ICa-L), and late sodium current (INa-late) before and after celecoxib administration in isolated PV cardiomyocytes. Results: Celecoxib (0.3, 1, and 3 mu M) reduced PV spontaneous beating rates, and induced delayed afterdepolarizations and burst firings in four of eight PV preparations (50%, p < 0.05). Celecoxib also reduced SAN beating rates and decreased AP durations (APDs) in RA and LA, but did not change the resting membrane potential. Indomethacin (0.3, 1, 3, and 10 mu M) changed neither the PV or SAN beating rates nor RA APDs, but it reduced LA APDs. Celecoxib (3 mu M) significantly increased the NCX current and decreased the ICa-L, but did not change the INa-late. Ranolazine (10 mu M) suppressed celecoxib (3 mu M)-induced PV burst firings in 6 (86%, p < 0.05) of 7 PVs. KB-R7943 (10 mu M) suppressed celecoxib (3 mu M)-induced PV burst firings in 5 (71%, p < 0.05) of 7 PVs. Conclusions: Selective and non-selective NSAIDs differentially modulate PV and atrial electrophysiological characteristics. Celecoxib increased PV triggered activity through enhancement of the NCX current, which contributed to its arrhythmogenesis. (C) 2015 Elsevier Ireland Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ijcard.2015.03.066
http://hdl.handle.net/11536/124687
ISSN: 0167-5273
DOI: 10.1016/j.ijcard.2015.03.066
期刊: INTERNATIONAL JOURNAL OF CARDIOLOGY
Volume: 184
起始頁: 559
結束頁: 567
顯示於類別:期刊論文