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Endothelial Nox4 exerts potentially beneficial effects on vasodilator function and blood pressure that are attributable to H(2)O(2) production. These effects contrast markedly with those reported for Nox1 and Nox2, which involve superoxide-mediated inactivation of nitric oxide. Our results suggest that therapeutic strategies to modulate ROS production in vascular disease may need to separately target individual Nox isoforms.
Ray et al. (Fri,) studied this question.