@article{APS6321,
author = {Qi-long Feng and Dong-mei Wu and Xiang-li Cui and Hua-chen Zhao and Guo-quan Fan and Lu-ying Zhao and Bo-wei Wu},
title = {Stimulation of Na+-Ca2+ exchange by purified antibody against alpha-2 repeat of Na+-Ca2+ exchanger in rat cardiomyocytes},
journal = {Acta Pharmacologica Sinica},
volume = {29},
number = {10},
year = {2016},
keywords = {},
abstract = {Aim: The aim of the present study was to investigate the effect of the antibody against alpha-2 repeat on Na+-Ca2+ exchanger (NCX) current (INa/Ca). To evaluate the functional specificity of this antibody, its effects on L-type Ca2+ current (ICa,L), voltage-gated Na+ current (INa) and delayed rectifier K+ current (IK) were also observed.
Methods: The whole-cell patch-clamp technique was used in this study.
Results: The antibody against alpha-2 repeat augmented both the outward and inward Na+-Ca2+ exchanger current concentration-dependently, with EC50 values of 27.9 nmol/L and 24.7 nmol/L, respectively. Meanwhile, the antibody could also increase ICa,L in a concentration-dependent manner with the EC50 of 33.6 nmol/L. Effects of the antibody on INa and IK were not observed in the present study.
Conclusion: The present results suggest that antibody against alpha-2 repeat is a stimulating antibody to NCX and could also increase ICa,L in a concentration-dependent manner, but did not have an obvious effect on INa and IK.},
issn = {1745-7254}, url = {http://www.chinaphar.com/article/view/6321}
}