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Aims/hypothesis. The concentration of asymmetrical dimethyl-L-arginine (ADMA), an endogenous inhibitor of the nitric oxide synthase, is increased in patients at risk or with cardiovascular disease. We have investigated ADMA concentrations in women with a history of gestational diabetes (GDM), who could develop endothelial dysfunction and Type II (non-insulin-dependent) diabetes mellitus after delivery,...
Aims/hypothesis. Recent studies have suggested that proinsulin C-peptide improves vascular functions, possibly through nitric oxide (NO) production. To clarify the molecular mechanisms of vascular NO production induced by C-peptide, we examined the effects of C-peptide on NO production and NO synthase expression in rat aortic endothelial cells in connection with mitogen-activated protein kinase (MAPK)...
Aims/hypothesis. Type 2 diabetic patients have been shown to have reduced basal platelet nitric oxide synthase activity, which is a possible contributor to the vascular complications seen in the disease. We investigated platelet nitric oxide generation stimulated by -adrenoceptors and adenylyl cyclase in Type 2 diabetic patients and control subjects. Methods. Platelets isolated from blood taken from...
Aims/hypothesis. Hyperhomocysteinaemia increases cardiovascular risk in Type II (non-insulin-dependent) diabetes mellitus by augmenting oxidative stress and reducing nitric oxide availability. In vitro, nitric oxide decreases homocysteine by its conversion to the vasodilative and antioxidant compound S-nitrosohomocysteine. We investigated whether or not changes in nitric oxide availability decrease...
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