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Effects of bretylium tosylate on electrophysiologic properties of normal and digitalized papillary muscles of guinea pigs.

   
@article{APS8829,
	author = {Yao-Chun Liu and Ping-Jun Zhu and Zhen-Yuan Li and De-Zhang Yu},
	title = {Effects of bretylium tosylate on electrophysiologic properties of normal and digitalized papillary muscles of guinea pigs.},
	journal = {Acta Pharmacologica Sinica},
	volume = {14},
	number = {6},
	year = {2016},
	keywords = {},
	abstract = {The effects of bretylium tosylate (BT) on the electrophysiologic properties of normal and digitalized papillary muscles isolated from guinea pigs were studied with regular glass microelectrode. BT prolonged effective refractory period (ERP) and action potential duration (APD) of normal papillary muscles. The ERP and APD of papillary muscles were shortened by perfusion with ouabain (Oua) 0.2 mumol.L-1. No recovery was seen in perfusion without drug for 30 min. In digitalized papillary muscles with Oua, ERP, APD90, and APD50 were prolonged by BT 120 mumol.L-1 form 175 +/- 20, 187 +/- 20, and 146 +/- 21 ms to 222 +/- 21, 220 +/- 19, and 190 +/- 19 ms, respectively. The results demonstrated that BT can prolong ERP and APD of papillary muscles digitalized with Oua.},
	issn = {1745-7254},	url = {http://www.chinaphar.com/article/view/8829}
}