Abstract
We investigated the role of insulin and glucose in the pathophysiology of hypertension associated with obesity. The comparative effects of an oral glucose load and of an L-arginine infusion on plasma glucose, plasma insulin and blood pressures (BP) were assessed in lean normotensive and in obese hypertensive males. Oral glucose (75 g in 1–2 min) induced a small but significant lowering of BP in lean normotensives, but failed to modify BP in obese hypertensives. L-arginine infusion (30 min, 500 mg/kg total dose) reduced BP; significantly greater reductions in sytolic and diastolic BP were observed in obese hypertensives than in the control group. Both oral glucose and L-arginine induced greater increases in plasma insulin in obese hypertensives than in lean normotensives. Endothelial dysfunction which accompanies the insulin resistant state of obesity, glucose intolerance and hypertension, may account for the different BP effects induced by glucose and L-arginine in obese hypertensives and lean normotensives.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 12 digital issues and online access to articles
$119.00 per year
only $9.92 per issue
Buy this article
- Purchase on SpringerLink
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout


Similar content being viewed by others
References
Welborn TA et al. Serum insulin in essential hypertension and in peripheral vascular disease Lancet 1966 1: 1336–1337
Ferrannini E et al. Insulin resistance in essential hypertension N Engl J Med 1987 317: 350–357
Laakso M, Sarlund H, Mykkanen L . Essential hypertension and insulin resistance in non-insulin-dependent diabetes Eur J Clin Invest 1989 19: 518–526
Reaven GM . Relationships between insulin resistance and hypertension Diabetes Care 1991 14: 33–38
Denker PS, Pollock VE . Fasting insulin levels in essential hypertension: a meta-analysis Arch Int Med 1992 152: 1649–1651
Morris AD, Connell JMC . Insulin resistance and essential hypertension: mechanisms and clinical implications Am J Med Sci 1994 307 (Suppl 1): S47–S52
Brands MW, Hall JE, Keen HL . Is insulin resistance linked to hypertension? Clin Exp Pharmacol Physiol 1998 25: 70–76
Scherrer U, Randin D, Vollenweider L, Nicod P . Nitric oxide release accounts for insulin's vascular effects in humans J Clin Invest 1994 94: 2511–2515
Baron AD et al. Insulin-mediated skeletal muscle vasodilation contributes to both insulin sensitivity and responsiveness in lean humans J Clin Invest 1995 96: 786–792
Vollenweider P et al. Impaired insulin-induced sympathetic neural activation and vasodilation in skeletal muscle of obese humans J Clin Invest 1994 93: 2365–2371
Gudbjornsdottir S, Elam M, Sellgren J, Anderson EA . Insulin increases forearm vacular resistance in obese, insulin-resistant hypertensives J Hypertens 1996 14: 91–97
Steinberg HO et al. Obesity/insulin resistance is associated with endothelial dysfunction J Clin Invest 1996 97: 2601–2610
Higashi Y et al. Relationship between insulin resistance and endothelium-dependent vascular relaxation inpatients with essential hypertension Hypertension 1997 29: 280–285
Pinkney JH, Stehouwer CDA, Coppack SW, Yudkin JS . Endothelial dysfunction: cause of the insulin resistance syndrome Diabetes 1997 46: S9–S13
Modan M et al. Hyperinsulinaemia: a link between hypertension, obesity and glucose intolerance J Clin Invest 1985 75: 809–817
DeFronzo RA . Insulin resistance, hyperinsulinemia, and coronary artery disease: a complex metabolic web J Cardiovasc Pharmacol 1992 20 (Suppl 11): S1–S16
Maheux P et al. Additive effects of obesity, hypertension and type-2 diabetes on insulin resistance Hypertension 1994 24: 695–698
Yki-Jarvinen H . Role of insulin resistance in the pathogenesis of NIDDM Diabetologia 1995 38: 1378–1388
Brands MW, Hildebrandt DA, Miizelle HL, Hall JE . Sustained hyperinsulinemia increases arterial pressure in conscious rats Am J Physiol 1991 260: R764–768
Hall JE, Coleman TG, Mizelle HL, Smith MJ . Chronic hyperinsulinemia and blood pressure regulation Am J Physiol 1990 258: F722–731
Singer P et al. Postprandial hyperglycemia inpatients with mild essential hypertension Hypertension 1985 7: 182–186
Reaven GM, Ho H . Sugar-induced hypertension in Sprague-Dawley rats Am J Hypertens 1991 4: 610–614
Brands MW, Fitzgerald SM . Chronic glucose infusion causes moderate hypertension in rats Am J Hypertens 2000 13: 99–102
Higashi Y et al. Renal response to L-arginine in salt sensitivepatients with essential hypertension Hypertension 1996 27: 643–648
Acknowledgements
The authors thank Heika Silveira for the glucose determinations.
Author information
Authors and Affiliations
Corresponding author
Additional information
The study was supported by Grants from CONICT S1-96001890, CDCH.F06.10.4214.98 and F06.30.4362.99 and IFF 01. 99
Rights and permissions
About this article
Cite this article
Castejon, A., Hoffmann, I., Jimenez, E. et al. Differential blood pressure effects of oral glucose and intravenous L-arginine in healthy lean normotensive and obese hypertensive subjects. J Hum Hypertens 16 (Suppl 1), S133–S136 (2002). https://doi.org/10.1038/sj.jhh.1001359
Published:
Issue date:
DOI: https://doi.org/10.1038/sj.jhh.1001359