Copyright © 2007, European Society of Cardiology
Protecting ischemic hearts by modulation of SR calcium handling
Sapporo Medical University, Departments of Pharmacology and Internal Medicine, S1 W16, Chuo-ku Sapporo, 060-8556, Japan
* Corresponding author. Tel.: +81 11 611 2111 ex2721; fax: +81 11 644 7958. tannom@sapmed.ac.jp
Received 27 May 2007; accepted 14 June 2007
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See article by Zhou et al. [4] (pages 487–497) in this issue.
The sarcoplasmic reticulum (SR) plays a crucial role in excitation-contraction coupling by regulating the concentration and distribution of intracellular Ca2+. The functions of the SR are known to be compromised by ischemia/reperfusion, but whether SR dysfunction contributes to Ca2+ overload and injury in cardiomyocytes during ischemia/reperfusion has been controversial for a decade. Studies using isolated cardiomyocytes subjected to simulated ischemia/reperfusion generally support the role of the SR in Ca2+ overload at the time of "reperfusion" [1].