Isfahan University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
Effect of L-Arginine and L-Name on Coronary Angiogenesis in Male Diabetic Rats



Khazaei M1 ; Moshayedi MA2 ; Teimouri Jervekani M2 ; Aghili S2 ; Montazeri S2 ; Mehdipour Dastjerdi R2 ; Hashemzehi F2 ; Hashemi Jazi H2
Authors
Show Affiliations
Authors Affiliations
  1. 1. Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Isfahan University of Medical Sciences, Isfahan, Iran

Source: Journal of Research in Medical Sciences Published:2012

Abstract

BACKGROUND: Diabetes is associated with several vascular abnormalities due to abnormal angiogenesis. Vascular endothelial growth factor (VEGF) and nitric oxide are among the most important angiogenic factors. The aim of this study was to evaluate the effect of L-arginine (L-Arg) and L-NG-Nitroarginine Methyl Ester (L-NAME) on coronary angiogenesis in male diabetic rats. METHODS: 24 male rats were randomly divided into four groups: (1) control, (2) diabetic, (3) diabetic + L-Arg (50mg/kg/day, ip) and (4) diabetic + L-NAME (10mg/kg/day, ip). After three weeks, blood samples were taken and the apex of the hearts was stained for immunohistochemistry. RESULTS: Coronary angiogenesis expressed as capillary density/mm2 was lower in diabetic group compared to the control group (p < 0.05). L-Arg significantly improved capillary density in myocardial tissue in diabetic animals (p < 0.05); however, L-NAME did not alter it (p > 0.05). CONCLUSIONS: It seems that L-Arg improves coronary angiogenesis in type I diabetic animals through changes of serum angiogenic factors. More studies are needed to clarify the effect of nitric oxide agonists in different experimental models of angiogenesis.
Other Related Docs
17. Imbalance of Angiogenesis in Diabetic Complications: The Mechanisms, International Journal of Preventive Medicine (2012)
31. Oestrogen Promotes Coronary Angiogenesis Even Under Normoxic Conditions, Basic and Clinical Pharmacology and Toxicology (2008)
36. The Effect of Captopril on Impaired Wound Healing in Experimental Diabetes, International Journal of Endocrinology (2012)
38. Coronary Angiogenesis During Experimental Hypertension: Is It Reversible?, Journal of Research in Medical Sciences (2011)
44. The Effects of Blocking Angiotensin Receptors on Early Stages of Diabetic Nephropathy, International Journal of Preventive Medicine (2012)
46. A Review on Angiogenesis and Its Assays, Iranian Journal of Basic Medical Sciences (2012)