Effect of didrovaltrate on l-calcium current in rabbit ventricular myocytes
Effect of didrovaltrate on l-calcium current in rabbit ventricular myocytes
复制标题
去氧戊酸对兔心室肌细胞L-钙电流的影响
DOI:
10.1016/s0254-6272(13)60052-7
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发表时间:
2012-09
影响因子:
2.6
通讯作者:
Zhang, Ziguan
中科院分区:
文献类型:
--
作者:
Xie, Qiang;Li, Weihua;Huang, ZhengRong;Zhang, Ziguan
OBJECTIVETo investigate the effect of didrovaltrate on L-type calcium current (Ica-L) in rabbit ventricular myocytes.METHODSWe used the whole cell patch clamp recording technique.RESULTSDidrovaltrate at concentrations of 30 μg/L and 100 μg/L significantly decreased peak ICa-L (ICa-Lmax) from (6.01 ± 0.48) pA/pF to (3.45±0.27) pA/pF and (2.16 ± 0.19) pA/pF (42.6% and 64.1%, n=8, P<0.01), respectively. Didrovaltrate shifted upwards the current-voltage curves of ICa-L without changing their active, peak and reverse potentials. Didrovaltrate affected the steady-state inactivation of ICa-L. The half activation potential (V1/2) was significantly shifted from (−26 ± 2) to (−36 ± 3) mV (n=6, P<0.05), with a significant change in the slope factor (k) (from 8.8 ± 0.8 to 11.1 ± 0.9, n=6, P<0.05). Didrovaltrate did not affect the activation curve.CONCLUSIONDidrovaltrate blocks ICa-L in a concentration-dependent manner and probably inhibits ICa-L in its inactive state, which may contribute to its cardiovascular effect.
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影响因子:
1.5
作者:
B. Barrett;D. Kiefer;D. Rabago
通讯作者:
B. Barrett;D. Kiefer;D. Rabago
DOI:
10.1007/s10298-008-0329-8
发表时间:
2008-08
期刊:
Phytothérapie
影响因子:
--
作者:
K. Ghédira;P. Goetz;R. Jeune
通讯作者:
K. Ghédira;P. Goetz;R. Jeune
影响因子:
4.4
作者:
Ortiz, JG;Nieves-Natal, J;Chavez, P
通讯作者:
Chavez, P
影响因子:
10.8
作者:
TYTGAT, J
通讯作者:
TYTGAT, J
影响因子:
2.6
作者:
R. Upton
通讯作者:
R. Upton