Cited by 916Nitric Oxide and Endothelin EffectsCardiovascular Health and Disease PreventionDiabetes, Cardiovascular Risks, and Lipoproteins

Impaired endothelium-dependent and independent vasodilation in patients with type 2 (non-insulin-dependent) diabetes mellitus

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McVeigh, G. E., Brennan, G. M., Johnston, G. D., McDermott, B. J., McGrath, L. T., Henry, W. R., Andrews, J. W., Hayes, J. R.·1992·Diabetologia

Abstract

The endothelium plays a pivotal role in modulating the reactivity of vascular smooth muscle through the formation of several vasoactive substances. We examined the effects of endothelium-dependent and independent vasodilators on forearm blood flow in 29 patients with Type 2 (non-insulin-dependent) diabetes mellitus and in 21 control subjects, using venous occlusion plethysmography. Via a brachial artery cannula, increasing amounts of acetylcholine and glyceryl trinitrate were infused in doses of 60, 120, 180 and 240 mmol per min and 3, 6 and 9 nmol per min respectively. NG monomethyl-L-arginine, a stereospecific inhibitor of endothelium derived relaxing factor, was infused to inhibit basal and stimulated release of this dilator substance. Reactive hyperaemic forearm blood flow did not differ between groups. Forearm blood flow responses to each dose of acetylcholine were significantly greater in control than diabetic subjects (p less than 0.01 for all doses). NG monomethyl-L-arginine attenuated forearm blood flow from maximal stimulated values when responses were compared with the natural decline to acetylcholine in forearm flow in both control and diabetic subjects (p less than 0.05 for both groups), but had no effect on basal blood flow responses. Forearm blood flow responses to each dose of glyceryl trinitrate were significantly greater in control than diabetic subjects (p less than 0.05 for all). These data provide evidence for endothelial and smooth muscle dysfunction in diabetes which may have important therapeutic implications.

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  • Abnormalities in endothelium-dependent vascular responses have been found among patients with type 2 diabetes mellitus.

    “Abnormalities in endothelium-dependent vascular responses, perhaps the earliest demonstrable alteration in vascular health, have been found among patients with type 2 DM (2,3).”

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Authors
McVeigh, G. E., Brennan, G. M., Johnston, G. D., McDermott, B. J., McGrath, L. T., Henry, W. R., Andrews, J. W., & Hayes, J. R.
Affiliations
  • Queen's University Belfast (GB)
  • Belfast City Hospital (GB)
Venue
Diabetologia
Published
1992-08
Volume
35
Issue
8
Pages
771-776
ISSN
  • 0012-186X (ISSN-L)
  • 1432-0428
OpenAlex
W1484535674
Cited by
916
References
28
Citations by year
2026: 3 · 2025: 4 · 2024: 7 · 2023: 13 · 2022: 9 · 2021: 12 · 2020: 21 · 2019: 18 · 2018: 16 · 2017: 20 · 2016: 11 · 2015: 21 · 2014: 19 · 2013: 16 · 2012: 27
FWCI
9.09
Type
journal article
Language
en
Open access
Locations
  • Diabetologia (publishedVersion)
  • PubMed (publishedVersion)
  • Research Portal (Queen's University Belfast) (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
Keywords
type 2 diabetes, endothelial dysfunction, vasodilation, acetylcholine, nitroglycerin, L-NMMA, endothelium-derived relaxing factor, forearm blood flow, reactive hyperemia, vascular smooth muscle dysfunction, nitric oxide
MeSH terms
Acetylcholine, Analysis of Variance, Arginine, Diabetes Mellitus, Type 2, Endothelium, Vascular, Female, Forearm, Nitroglycerin, Humans, Ischemia, Male, Middle Aged, Muscles, Reference Values, Regional Blood Flow, Vasodilation, omega-N-Methylarginine

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