Key result
In DOCA-salt hypertensive rats, increased tissue levels of endothelin-1 may decrease ET-A receptor-mediated vascular response, while ET-B receptor-mediated vasoconstriction is potentiated.
Why the study?
Does endothelin-1 play a role in elevated peripheral resistance in DOCA-salt hypertensive rats?
Population
Deoxycorticosterone-acetate (DOCA)-salt hypertensive rats and control normotensive (CN) rats
Comparison
Endothelin-1 administration vs Control normotensive (CN) rats
Design
Preclinical
Authors
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Does not support clinical ET receptor targeting; leaves open whether ET-B potentiation contributes to resistance in human hypertension.
Does endothelin-1 play a role in elevated peripheral resistance in DOCA-salt hypertensive rats?
In DOCA-salt hypertension, elevated tissue endothelin-1 may decrease ET-A mediated responses while potentiating ET-B mediated vasoconstriction.
Zhao et al. (2000) studied Deoxycorticosterone acetate (DOCA)-salt hypertension. Endothelin-1 vs. Control normotensive group was evaluated on Microvascular responses to endothelin-1. In DOCA-salt hypertensive rats, increased tissue levels of endothelin-1 may decrease ET-A receptor-mediated vascular response, while ET-B receptor-mediated vasoconstriction is potentiated.
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