Cited by 174Diabetes Treatment and ManagementNitric Oxide and Endothelin EffectsDiabetes, Cardiovascular Risks, and Lipoproteins

Exenatide Protects Against Glucose- and Lipid-Induced Endothelial Dysfunction: Evidence for Direct Vasodilation Effect of GLP-1 Receptor Agonists in Humans

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Koska, Juraj, Sands, Michelle, Burciu, Camelia, D’Souza, Karen M., Raravikar, Kalyani, Liu, James, Truran, Seth, Franco, Daniel A. +5 more·2015·Diabetes

Abstract

GLP-1 receptor (GLP-1R) agonists may improve endothelial function (EF) via metabolic improvement and direct vascular action. The current study determined the effect of GLP-1R agonist exenatide on postprandial EF in type 2 diabetes and the mechanisms underlying GLP-1R agonist–mediated vasodilation. Two crossover studies were conducted: 36 participants with type 2 diabetes received subcutaneous exenatide or placebo for 11 days and EF, and glucose and lipid responses to breakfast and lunch were determined; and 32 participants with impaired glucose tolerance (IGT) or diet-controlled type 2 diabetes had EF measured before and after intravenous exenatide, with or without the GLP-1R antagonist exendin-9. Mechanisms of GLP-1R agonist action were studied ex vivo on human subcutaneous adipose tissue arterioles and endothelial cells. Subcutaneous exenatide increased postprandial EF independent of reductions in plasma glucose and triglycerides. Intravenous exenatide increased fasting EF, and exendin-9 abolished this effect. Exenatide elicited eNOS activation and NO production in endothelial cells, and induced dose-dependent vasorelaxation and reduced high-glucose or lipid-induced endothelial dysfunction in arterioles ex vivo. These effects were reduced with AMPK inhibition. In conclusion, exenatide augmented postprandial EF in subjects with diabetes and prevented high-glucose and lipid-induced endothelial dysfunction in human arterioles. These effects were largely direct, via GLP-1R and AMPK activation.

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  • In vitro/ex vivo studies on endothelial cells showed that GLP-1RAs such as exenatide and liraglutide stimulate endothelial nitric oxide production and eNOS activation, eliciting vasodilatation through GLP-1 receptor-dependent AMPK/Akt/eNOS signaling.

    “In vitro/ex vivo studies conducted on endothelial cells showed that GLP-1RAs such as exenatide and liraglutide stimulate endothelial NO production and endothelial nitric oxide synthase (eNOS) activation, eliciting vasodilatation through activation of the GLP-1 receptor-dependent AMP-activated protein kinase (AMPK)/protein kinase B (Akt)/eNOS signaling pathway [48–50].”
  • Human studies provide conflicting information about the effect of GLP-1 or stable analogues on endothelial function.

    “Human studies provide conflicting information about the effect of GLP-1 or stable analogues on endothelial function.212-217”

    From The Vasculature in Prediabetes (2018) · cites this paper as [213]

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Authors
Koska, J., Sands, M., Burciu, C., D’Souza, K. M., Raravikar, K., Liu, J., Truran, S., Franco, D. A., Schwartz, E. A., Schwenke, D. C., D’Alessio, D., Migrino, R. Q., & Reaven, P. D.
Affiliations
  • Department of Medicine, Phoenix VA Health Care System, Phoenix, AZ
  • Phoenix VA Health Care System (US)
  • Duke University (US)
Venue
Diabetes
Published
2015-02-26
Volume
64
Issue
7
Pages
2624-2635
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2130583827
Cited by
174
References
52
Citations by year
2026: 17 · 2025: 27 · 2024: 20 · 2023: 11 · 2022: 20 · 2021: 14 · 2020: 6 · 2019: 13 · 2018: 14 · 2017: 16 · 2016: 12 · 2015: 4
FWCI
13.30
Type
journal article
Language
en
Open access
Locations
  • Diabetes (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Heart, Lung, and Blood Institute (R21HL-092344-01)
  • U.S. Department of Veterans Affairs (1I01CX000598, BLRD I01BX007080)
  • American Diabetes Association (1-10-CT-31)
  • Amyloidosis Foundation
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
Keywords
exenatide, GLP-1 receptor agonists, endothelial dysfunction, vasodilation, type 2 diabetes, impaired glucose tolerance, AMPK, endothelial nitric oxide synthase, nitric oxide, high glucose, hypertriglyceridemia, endothelial cells
MeSH terms
Glucagon-Like Peptide-1 Receptor, Exenatide, Blood Glucose, Cells, Cultured, Diabetes Mellitus, Type 2, Double-Blind Method, Female, Humans, Male, Peptides, Triglycerides, Vasodilation, Venoms, Receptors, Glucagon, Cross-Over Studies, Endothelial Cells, AMP-Activated Protein Kinases

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