Effects of low‐dose l‐arginine on insulin‐mediated vasodilatation and insulin sensitivity
Abstract
The present study was carried out to evaluate the effect of a low-dose intravenous supplementation of L-arginine on insulin-mediated vasodilatation and insulin sensitivity. The study was performed in healthy subjects (n = 7) and patients with obesity (n = 9) and non-insulin-dependent diabetes mellitus (NIDDM) (n = 9). Insulin-mediated vasodilatation was measured by venous occlusion plethysmography during the insulin suppression test, evaluating insulin sensitivity. Experiments were performed twice in each subject in the presence or absence of a concomitant infusion of L-arginine (0.52 mg kg-1 min-1). L-Arginine restored the imparied insulin-mediated vasodilatation observed in obesity (22.4 +/- 4.1%, P < 0.01 vs. without L-arginine) and NIDDM (20.3 +/- 3.2%, P < 0.01 vs. without L-arginine). In healthy subjects, no effect on insulin mediated-vasodilatation was observed (24.8 +/- 3.1% vs. 21.4 +/- 3.1%). Insulin sensitivity was improved significantly (P < 0.001) in all three groups by infusion of L-arginine. No effect of L-arginine was observed on insulin, insulin-like growth factor I (IGF-I), free fatty acids (FFAs) or C-peptide levels during the insulin suppression test. Our data indicate that defective insulin-mediated vasodilatation in obesity and NIDDM can be normalized by intravenous L-arginine. Furthermore, L-arginine improves insulin sensitivity in obese patients and NIDDM patients as well as in healthy subjects, indicating a possible mechanism that is different from the restoration of insulin-mediated vasodilatation.
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Human studies have repeatedly shown that L-arginine supplementation has favorable effects on body composition and insulin sensitivity.
“However, human studies have repeatedly shown that L-arginine supplementation has favorable effects on body composition and insulin sensitivity [271-277].”
From Regulation of obesity and insulin resistance by nitric oxide (2014) · cites this paper as [271]
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- Authors
- WASCHER, T. C., GRAIER, W. F., DITTRICH, P., HUSSAIN, M. A., BAHADORI, B., WALLNER, S., & TOPLAK, H.
- Affiliations
- University of Graz (AT)
- University Hospital Zurich (CH)
- Corresponding author
- WASCHER, T. C.
- Venue
- European Journal of Clinical Investigation
- Publisher
- Wiley
- Published
- 1997-08
- Volume
- 27
- Issue
- 8
- Pages
- 690-695
- ISSN
- 0014-2972 (ISSN-L)
- 1365-2362
- OpenAlex
- W1978337405
- Cited by
- 87
- References
- 0
- Citations by year
- 2026: 2 · 2025: 2 · 2023: 4 · 2022: 5 · 2021: 1 · 2020: 3 · 2019: 1 · 2018: 3 · 2017: 4 · 2016: 3 · 2014: 7 · 2013: 5 · 2012: 6
- FWCI
- 2.24
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- European Journal of Clinical Investigation (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Oesterreichische Nationalbank
- Topics
- Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
- Keywords
- L-arginine, insulin sensitivity, obesity, type 2 diabetes, insulin resistance, intravenous supplementation, insulin suppression test, insulin-like growth factor I, free fatty acids, C-peptide
- MeSH terms
- Adult, Arginine, C-Peptide, Diabetes Mellitus, Type 2, Fatty Acids, Female, Humans, Insulin, Insulin Resistance, Insulin-Like Growth Factor I, Male, Middle Aged, Obesity, Vasodilation
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Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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