Cited by 360Nitric Oxide and Endothelin EffectsAdvanced Glycation End Products researchBlood properties and coagulation

Vascular Effects of Acute Hyperglycemia in Humans Are Reversed by l-Arginine: Evidence for Reduced Availability of Nitric Oxide During Hyperglycemia

Giugliano, Dario, Marfella, Raffaele, Coppola, Ludovico, Verrazzo, Giovanni, Acampora, Rita, Giunta, Riccardo, Nappo, Francesco, Lucarelli, Carmela +1 more·1997·Circulation

Abstract

BACKGROUND: Acute hyperglycemia may increase vascular tone in normal humans via a glutathione-sensitive, presumably free radical-mediated pathway. The objective of this study was to investigate whether or not the vascular effects of hyperglycemia are related to reduced availability of nitric oxide. METHODS AND RESULTS: Acute hyperglycemia (15 mmol/L, 270 mg/dL) was induced in 12 healthy subjects with an artificial pancreas. Systolic and diastolic blood pressures, heart rate, and plasma catecholamines showed significant increases (P < .05) starting after 30 minutes of hyperglycemia; leg blood flow decreased significantly (15%; P < .05) at 60 and 90 minutes. Platelet aggregation to ADP and blood viscosity also showed significant increments (P < .05). The infusion of L-arginine (n = 7, 1 g/min) but not D-arginine (n = 5, 1 g/min) or L-lysine (n = 5, 1 g/min) in the last 30 minutes of the hyperglycemic clamp completely reversed all hemodynamic and rheological changes brought about by hyperglycemia. Infusion of NG-monomethyl-L-arginine (L-NMMA; 2 mg/min) to inhibit endogenous nitric oxide synthesis in 8 normal subjects produced vascular effects qualitatively similar to those of hyperglycemia but quantitatively higher (P < .05); however, heart rate and plasma catecholamine levels decreased during L-NMMA infusion, presumably as a consequence of baroreflex activation. Infusion of L-NMMA during hyperglycemia produced changes not different from those obtained during infusion of L-NMMA alone. CONCLUSIONS: The results show that acute hyperglycemia in normal subjects causes significant hemodynamic and rheological changes that are reversed by L-arginine. Moreover, the effects of hyperglycemia are mimicked to a large extent, but not entirely, by infusion of L-NMMA. This suggests that hyperglycemia may reduce nitric oxide availability in humans.

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Crossref · 10.1161/01.cir.95.7.1783

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  • The postprandial inflammatory response appears to play a more crucial role in insulin resistance, metabolic syndrome, and atherosclerosis than previously thought.

    “The pathophysiological significance of a postprandial inflammatory response in causing insulin resistance, the metabolic syndrome and atherosclerosis is currently under investigation, and this response appears to play a much more crucial role than previously thought (162) .”

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Authors
Giugliano, D., Marfella, R., Coppola, L., Verrazzo, G., Acampora, R., Giunta, R., Nappo, F., Lucarelli, C., & D’Onofrio, F.
Affiliations
  • University of Campania "Luigi Vanvitelli" (IT)
  • From the Department of Geriatrics and Metabolic Diseases (D.G., R.M., L.C., G.V., R.A., R.G., F.N., F.D.) and Institute of Pharmacology and Toxicology (C.L.), Second University of Naples, Italy.
Venue
Circulation
Published
1997-04
Volume
95
Issue
7
Pages
1783-1790
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W1986579939
Cited by
360
References
37
Citations by year
2026: 3 · 2025: 4 · 2024: 4 · 2023: 5 · 2022: 3 · 2021: 4 · 2020: 11 · 2019: 5 · 2018: 4 · 2017: 5 · 2016: 8 · 2015: 8 · 2014: 14 · 2013: 17 · 2012: 19
FWCI
4.68
Type
journal article
Language
en
Open access
closed
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
  • Archivio Istituzionale della Ricerca - Università degli Studi della Campania "Luigi Vanvitelli" (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Advanced Glycation End Products research
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Blood properties and coagulation
Keywords
acute hyperglycemia, L-arginine, nitric oxide bioavailability, vascular tone, blood pressure, leg blood flow, platelet aggregation, blood viscosity, L-NMMA, catecholamines, baroreflex, hemodynamics, rheology, glutathione, free radicals
MeSH terms
Acute Disease, Adult, Arginine, Blood Viscosity, Catecholamines, Female, Free Radicals, Glucose, Glutathione, Hemodynamics, Humans, Hyperglycemia, Insulin, Lysine, Male, Nitric Oxide, Platelet Aggregation, Vasoconstriction, omega-N-Methylarginine

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