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Heterogeneity of the SR-dependent Inward Na+-Ca2+ Exchange Current in the Heavily Ca2+-buffered Rat Ventricular Myocytes
Kyung-BongYoon, Sung-WanAhn, ChangMannKo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.2 6 101-110 (10 pages)
of ICaL and ryanodine receptor, constituting 14.8⁑1.6%. This latter was blocked by either 10 mM caffeine-induced SR Ca2-depletion or 1 mM tetracaine. IV-relationships illustrated that the latter was activated until the peak in 30∼35 mV lower voltages than the former. Overall, it was concluded that the SR Ca2 release process in the rat ventricular myocytes is mediated by the voltage-sensitive release mechanism in addition to the Ca2-induced-Ca2 release.
