Key result
Reduced microvascular function in young, non-Hispanic black women may be partially controlled by endothelin-1 type A receptors, but not type B receptors or l-arginine bioavailability.
Why the study?
Cardiovascular disease remains a burden in the US non-Hispanic black population, although its manifestation through blunted vasodilation differs between men and women.
What are the contributions of endothelin-1 and l-arginine to blunted cutaneous microvascular function in young, black women?
Observational
What are the contributions of endothelin-1 and l-arginine to blunted cutaneous microvascular function in young, black women?
Endothelin-1 type A receptors, but not type B receptors or l-arginine bioavailability, partially mediate blunted microvascular function in young, non-Hispanic black women.
Answers are grounded in this paper and cite their sources.
ET_A receptors merit targeted investigation in microvascular disparities; hypothesis-generating and should not yet change practice.
Cardiovascular disease remains a burden in the United States non-Hispanic black (BL) population, although its manifestation through blunted vasodilation in this population is different between men and women. Accordingly, this study determined that reduced microvascular function in young, BL women may be partially controlled by endothelin-1 (ET-1) type A receptors, although neither type B receptors nor insufficient l-arginine bioavailability seems to contribute to this response. Accordingly, further research is needed to better characterize these ET-1 related mechanisms and illuminate other pathways that may contribute to this disparate vascular function in young, BL women.
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Akins et al. (2021) conducted an observational in Blunted cutaneous microvascular function. Endothelin-1 (ET-1) type A receptors and l-arginine was evaluated on Microvascular function. Reduced microvascular function in young, non-Hispanic black women may be partially controlled by endothelin-1 type A receptors, but not type B receptors or l-arginine bioavailability.
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