ArticleThe journal of cardiovascular aging2024
Microvascular angiotensin II type 2 receptor function is enhanced in young females and declines in a model of murine aging.
Article in The journal of cardiovascular aging, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Renin-Angiotensin-Aldosterone System in Preeclampsia: Pathophysiological Insights and Links to Vascular Dementia.Arteriosclerosis, thrombosis, and vascular biology · 2026Review
- The angiotensin II type 2 receptor attenuates aging-associated arterial stiffness in female mice.American journal of physiology. Heart and circulatory physiology · 2025Article
- Mineralocorticoid and estrogen receptors as sex-dependent modulators of vascular health in aging and obesity.The Journal of pharmacology and experimental therapeutics · 2025Review
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Authors and funding
7 authors.
Funding
Abstract
Introduction: Angiotensin II (AngII) affects cardiovascular health, mediating impacts through AngII type 1 (AT1R) and type 2 (AT2R) receptors. The present study investigated sex and aging-related differences in microvascular AngII receptor function in mice and humans. Methods: Mesenteric resistance arteries (MRA) were isolated from 3-, 12-, and 18-month-old female and male C57/Bl6 mice. Wire myography was used to measure vasoconstriction to AngII and vasodilation to an AT2R agonist (compound 21, C21). Seven healthy adults (3 premenopausal women and 4 age-matched men) were recruited to participate in a study measuring cutaneous microvascular vasoconstriction to AngII in the presence and absence of 10 μM PD123319, an AT2R antagonist. Results: In murine MRA, AngII-induced constriction increases by 18 months in females and by 12 months in males. AT2R-mediated vasodilation was reduced with age in females only, which corresponds with a female-specific decrease in mesenteric AT2R mRNA expression. AT2R inhibition enhances AngII-induced constriction in young female, but not male, mice. Clinical data support that premenopausal women have attenuated AngII constriction Conclusions: These data demonstrate enhanced microvascular AT2R function in young female mice and young women. There is a female-specific loss of AT2R function with age in mice, concomitant with declining AT2R expression. These findings implicate AT2R as a sex-specific target for microvascular dysfunction and aging-associated cardiovascular disease.
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