Why the study?
The role of oxidative stress in the regulation of MAP and RBF during salt-sensitive hypertension was investigated.
Does deletion of the p67phox subunit of NOX2 alter the renal blood flow and blood pressure response to a high-salt diet in salt-sensitive rats?
Does deletion of the p67phox subunit of NOX2 alter the renal blood flow and blood pressure response to a high-salt diet in salt-sensitive rats?
Deletion of the p67phox subunit of NOX2 in salt-sensitive rats permits compensatory increases in renal blood flow during high-salt intake, mitigating the hypertensive response and revealing salt-induced asynchronicity between MAP and RBF circadian rhythms.
Blunts salt-induced hypertension via preserved RBF in SS rats; hypothesis-generating for NOX2 targeting in human salt sensitivity.
Continuous measurements of MAP and RBF were made in conscious SS p67phox −/− rats to determine the role of oxidative stress in their regulation. Deletion of p67 phox restored the vasodilatory response to a high-salt diet in SS rats. RBF increased in response to a salt load in SS p67phox −/− but not SS rats. Circadian analysis demonstrated that MAP and RBF became asynchronous as the rats progressed through the high-salt challenge: RBF peaked over 4 h before MAP.
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Evans et al. (2025) studied this question.
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