In this work, we report that NADH can increase the autoxidation rate of hemoglobin (HbA) in a pH-dependent fashion. During this process, this cofactor is itself oxidized. The presence of superoxide dismutase (SOD) and/or catalase (CAT) can inhibit this result. At lower pH rates, the effect of NADH on the hemoglobin autoxidation rate is more enhanced; in addition, the rate of NADH oxidation is increased. Our data indicates that the reduced pyridine nucleotide may influence the redox state of human hemoglobin by a mechanism, which probably involves free radical species.
Effect of NADH on the redox state of human hemoglobin
FALCIONI, Giancarlo;
2002-01-01
Abstract
In this work, we report that NADH can increase the autoxidation rate of hemoglobin (HbA) in a pH-dependent fashion. During this process, this cofactor is itself oxidized. The presence of superoxide dismutase (SOD) and/or catalase (CAT) can inhibit this result. At lower pH rates, the effect of NADH on the hemoglobin autoxidation rate is more enhanced; in addition, the rate of NADH oxidation is increased. Our data indicates that the reduced pyridine nucleotide may influence the redox state of human hemoglobin by a mechanism, which probably involves free radical species.File in questo prodotto:
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