Ukurasa 1 kutoka 21 matokeo
Reduction of nitrite to nitric oxide during ischemia protects the heart against injury from ischemia/reperfusion. However the optimal dose of nitrite and the mechanisms underlying nitrite-induced cardioprotection are not known. We determined the ability of nitrite and nitrate to confer protection
OBJECTIVE
Adrenomedullin (ADM) has been shown to protect the heart against ischaemic injury, but little is known of the underlying mechanism. Mitochondrial Ca(2+)-activated K(+) (mitoK(Ca)) channels play a key role in cardioprotection. This study examined whether mitoK(Ca) channel is involved in the
6-[4-(1-Cyclohexyl-1H-tetrazol-5-yl)butoxy]-3,4-dihydro-2-(1H)quinolinone (cilostazol), a phosphodiesterase type 3 (PDE III) inhibitor, activates cAMP-dependent protein kinase A (PKA). The cAMP/PKA pathway potentiates the opening of mitochondrial Ca(2+)-activated K(+) (mitoK(Ca)) channels and
Diabetes increases mortality and accelerates left ventricular (LV) dysfunction following myocardial infarction (MI). This study sought to determine the impact of impaired myocardial insulin signaling, in the absence of diabetes, on the development of LV dysfunction following MI. Mice with
BACKGROUND
Cardioprotective pathways may involve a mitochondrial ATP-sensitive potassium (mitoK(ATP)) channel but its composition is not fully understood.
OBJECTIVE
We hypothesized that the mitoK(ATP) channel contains a sulfonylurea receptor (SUR)2 regulatory subunit and aimed to identify the
Early reperfusion is the best therapy for myocardial infarction (MI). Effectiveness, however, varies significantly between patients and has implications for long-term prognosis and treatment. A technique to assess the extent of myocardial salvage after reperfusion therapy would allow for high-risk
1. Activation of mitochondrial KATP (mitoKATP) channels and protein kinase C (PKC) has been implicated in cardioprotective mechanisms of ischaemic preconditioning (IPC). However, the exact role of these events in early IPC remains unclear. 2. Isolated and perfused rat hearts underwent IPC with three
Fluorometry is used to detect intrinsic flavoprotein (FP) and nicotinamide adenine dinucleotide (NADH) signals in an open-chest rabbit model of myocardial ischemia-reperfusion injury. Myocyte apoptosis has been shown clinically to contribute to infarct size following reperfusion of ischemic
Apoptosis plays a critical role in many neurologic diseases, including stroke. Cytochrome c release and activation of various caspases are known to occur after focal and global ischemia. However, recent reports indicate that caspase-independent pathways may also be involved in ischemic damage.
BACKGROUND
MCC-134 (1-[4-(H-imidazol-1-yl)benzoyl]-N-methylcyclobutane-carbothioamide), a newly developed analog of aprikalim, opens surface smooth muscle-type ATP-sensitive potassium (K(ATP)) channels but inhibits pancreatic K(ATP) channels. However, the effects of MCC-134 on cardiac surface K(ATP)
BACKGROUND
Preconditioning with isoflurane has been shown to confer cardioprotection via activation of mitochondrial adenosine triphosphate-sensitive K+ (mito K(ATP)) channels. However, the relative contribution of mito K(ATP) channel and non-mito K(ATP) channel mechanisms to isoflurane-mediated
Focal cerebral ischemia activates the nuclear protein poly(ADP-ribose) polymerase (PARP). Apoptosis-inducing factor (AIF) is a flavoprotein that is normally confined to the mitochondria, but translocates to the nucleus, as shown by in vitro models of neuronal injury. Using INO-1001, a novel potent
BACKGROUND
Diabetes alters mitochondrial bioenergetics and consequently disrupts cardioprotective signaling. The authors investigated whether mitochondrial DNA (mtDNA) modulates anesthetic preconditioning (APC) and cardiac susceptibility to ischemia-reperfusion injury by using two strains of rats,
In this study we examined the effect of inhibition of MMP-2 expression, using siRNA, on the cardiomyocyte proteome. Isolated cardiomyocytes were transfected with MMP-2 siRNA and incubated for 24h. Control cardiomyocytes from the same heart were transfected with scrambled siRNA following the same
BACKGROUND
Whereas in the past, androgens were mainly believed to exert adverse effects on the cardiovascular system, recent experimental data postulate a benefit of testosterone for recovery of myocardial function after ischemia/reperfusion injury. Thus, we examined whether testosterone might