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Effects of tetrandrine on contractility of isolated pig coronary artery strips

  
@article{APS4633,
	author = {Ju-fang JIA and Lan-lan GAO and Guo-jin XIA and Qi-fa LUO and Da-chao FANG and Ming-xing JIANG},
	title = {Effects of tetrandrine on contractility of isolated pig coronary artery strips},
	journal = {Acta Pharmacologica Sinica},
	volume = {5},
	number = {1},
	year = {2016},
	keywords = {},
	abstract = {Tetrandrine (Tet) 64μM and verapamil (Ver) 8.4 μM relaxed the contraction of coronary artery strips. It is rreversed by raising the extracellular Ca ++ from 2.7 to 14.4μM. within a certain range (Tet 0.1μM-0.1Mm. Ver 1 Nm-1Μm), the % of relaxation was in proportion to dose. However, Tet and Ver exerted no significant inhibition on the extracellular Ca++ contraction induced by NE. It is probable that Tet and Ver primarily inhibited the potential dependent channel (PDC) and prevented the influx of Ca++ through PDC. Tet  10μM and Ver 0.1μM  also inhibited the release of intracellular Ca++ by NE. This showed that Tet and Ver might affect the transport of intracellular Ca++. The relaxant effect of Iso on the coronary strips was not blocked by Tet and Ver. Tet is therefore considered to be different from the β-blocker propranolol, but similar to the calcium antagonist Ver.},
	issn = {1745-7254},	url = {http://www.chinaphar.com/article/view/4633}
}