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Objective: The cardiac pathogenesis of diabetes mellitus involves oxidative stress that elicits profound changes in myocardial glutathione, an endogenous regulator of cell function. This study examined the role of glutathione in regulating K + channel activity in isolated ventricular myocytes from diabetic rats and its relationship to insulin signaling. Methods and results: Colorimetric analysis...
Background: Haem oxygenase (HO-1), a heat shock or stress protein, is a rate-limiting enzyme in the conversion of pro-oxidant haem to biliverdin and carbon monoxide (CO). The products of haem catabolism serve regulatory and protective functions. Previous studies have shown that hypoxia induces HO-1 expression in cardiac myocytes. Accordingly, we investigated whether hypoxia-induced HO-1 expression...
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