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Aims/hypothesis Impaired nitric oxide (NO) bioactivity and increased superoxide (SO) production are characteristics of vascular endothelial dysfunction in diabetes. The underlying mechanisms remain unknown. In this regard, we investigated the role of tetrahydrobiopterin (BH4) bioavailability in regulating endothelial nitric oxide synthase (eNOS) activity, dimerisation and SO production in streptozotocin-induced...
Aims/hypothesis. Both diabetes mellitus and hyperhomocysteinaemia are risk factors for cardiovascular disease and are associated with impaired endothelial nitric oxide and with excess superoxide formation. To explore potential vasculopathic interactions between these risk factors, the effect of homocysteine on endothelium-dependent relaxation and cyclic GMP formation was investigated in aortae from...
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