Cited by 57Renin-Angiotensin System StudiesNitric Oxide and Endothelin EffectsEicosanoids and Hypertension Pharmacology

Favorable Vascular Actions of Angiotensin-(1–7) in Human Obesity

Schinzari, Francesca, Tesauro, Manfredi, Veneziani, Augusto, Mores, Nadia, Di Daniele, Nicola, Cardillo, Carmine·2018·Hypertension

Abstract

Obese patients have vascular dysfunction related to impaired insulin-stimulated vasodilation and increased endothelin-1–mediated vasoconstriction. In contrast to the harmful vascular actions of angiotensin (Ang) II, the angiotensin-converting enzyme 2 product Ang-(1–7) has shown to exert cardiovascular and metabolic benefits in experimental models through stimulation of the Mas receptor. We, therefore, examined the effects of exogenous Ang-(1–7) on vasodilator tone and endothelin-1–dependent vasoconstriction in obese patients. Intra-arterial infusion of Ang-(1–7) (10 nmol/min) resulted in significant increase in unstimulated forearm flow ( P =0.03), an effect that was not affected by the Mas receptor antagonist A779 (10 nmol/min; P >0.05). In the absence of hyperinsulinemia, however, forearm flow responses to graded doses of acetylcholine and sodium nitroprusside were not different during Ang-(1–7) administration compared with saline (both P >0.05). During infusion of regular insulin (0.15 mU/kg per minute), by contrast, endothelium-dependent vasodilator response to acetylcholine was significantly enhanced by Ang-(1–7) ( P =0.04 versus saline), whereas endothelium-independent response to sodium nitroprusside was not modified ( P =0.91). Finally, Ang-(1–7) decreased the vasodilator response to endothelin A receptor blockade (BQ-123; 10 nmol/min) compared with saline (6±1% versus 93±17%; P <0.001); nitric oxide inhibition by l - N -monomethylarginine (4 µmol/min) during concurrent endothelin A antagonism resulted in similar vasoconstriction in the absence or presence of Ang-(1–7 Ang-(1–7) ( P =0.69). Our findings indicate that in obese patients Ang-(1–7) has favorable effects not only to improve insulin-stimulated endothelium-dependent vasodilation but also to blunt endothelin-1–dependent vasoconstrictor tone. These findings provide support for targeting Ang-(1–7) to counteract the hemodynamic abnormalities of human obesity.

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Crossref · 10.1161/hypertensionaha.117.10280

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  • In obese humans, angiotensin 1-7 administration decreased vascular dysfunction related to impaired insulin sensitivity.

    “In obese humans, Ang-(1-7) administration decreased vascular dysfunction related to impaired insulin sensitivity [140].”

    From The critical role of oxidative stress in sarcopenic obesity (2021) · cites this paper as [140]

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Authors
Schinzari, F., Tesauro, M., Veneziani, A., Mores, N., Di Daniele, N., & Cardillo, C.
Affiliations
  • University of Rome Tor Vergata (IT)
  • From the Policlinico A. Gemelli, Rome, Italy (F.S., A.V., N.M., C.C.); Department of Internal Medicine, University of Tor Vergata, Rome, Italy (M.T., N.D.D.); and Departments of Surgery (A.V.), Pharmacology (N.M.), and Internal Medicine (C.C.), Catholic University, Rome, Italy.
Venue
Hypertension
Published
2018-01
Volume
71
Issue
1
Pages
185-191
ISSN
  • 0194-911X (ISSN-L)
  • 1524-4563
OpenAlex
W2774046602
Cited by
57
References
51
Citations by year
2026: 1 · 2025: 6 · 2024: 7 · 2023: 6 · 2022: 5 · 2021: 11 · 2020: 10 · 2019: 7 · 2018: 3 · 2017: 1
FWCI
4.44
Type
journal article
Language
en
Open access
closed
Locations
  • Hypertension (publishedVersion)
  • PubMed (publishedVersion)
  • Cineca Institutional Research Information System (Tor Vergata University) (submittedVersion)
Funders
  • Ministero della Salute (RF 2010, RF-2010-2313809)
  • Università Cattolica del Sacro Cuore
  • Fondazione Roma (NCDS-2013-00000308)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Renin-Angiotensin System Studies
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Eicosanoids and Hypertension Pharmacology
Keywords
angiotensin-(1-7), obesity, vascular dysfunction, endothelin-1, ETA receptor, endothelium-dependent vasodilation, Mas receptor, forearm blood flow, nitric oxide, A779, BQ-123, L-NMMA, angiotensin II
MeSH terms
Adult, Angiotensin I, Female, Forearm, Humans, Insulin, Male, Middle Aged, Obesity, Peptide Fragments, Regional Blood Flow, Statistics as Topic, Vasoconstriction, Vasoconstrictor Agents, Vasodilation, Vasodilator Agents, Endothelin-1, Receptor, Endothelin A

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