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تعداد نتایج: 441177 فیلتر نتایج به سال:
G-protein coupled inwardly rectifying potassium channels (GIRKs) are ubiquitously expressed throughout the human body and are an integral part of inhibitory signal transduction pathways. Upon binding of Gβγ subunits released from G-protein coupled receptors (GPCRs), GIRK channels open and reduce the activity of excitable cells via hyperpolarization. As such, they play a role in cardiac output, ...
Postresuscitation myocardial dysfunction has been recognized as a leading cause of the high postresuscitation mortality rate. We investigated the effects of ischemic preconditioning and activation of ATP-sensitive K(+) (K(ATP)) channels on postresuscitation myocardial function. Ventricular fibrillation (VF) was induced in 25 Sprague-Dawley rats. Cardiopulmonary resuscitation (CPR), including me...
BACKGROUND Pharmacological evidence has implicated ATP-sensitive K(+) (K(ATP)) channels as the effectors of cardioprotection, but the relative roles of mitochondrial (mitoK(ATP)) and sarcolemmal (surfaceK(ATP)) channels remain controversial. METHODS AND RESULTS We examined the effects of the K(ATP) channel blocker HMR1098 and the K(ATP) channel opener P-1075 on surfaceK(ATP) and mitoK(ATP) ch...
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