Abstract Title:

Curcumin ameliorates high glucose-induced acute vascular endothelial dysfunction in rat thoracic aorta.

Abstract Source:

Clin Exp Pharmacol Physiol. 2009 Dec;36(12):1177-82. Epub 2009 May 19. PMID: 19473193

Abstract Author(s):

Xiao-Dong Fang, Fan Yang, Li Zhu, Yue-Liang Shen, Lin-Lin Wang, Ying-Ying Chen

Article Affiliation:

National Education Base for Basic Medical Sciences, Zhejiang University School of Medicine, Hangzhou, China.


1. The aims of the present study were to explore the protective effect of curcumin against the acute vascular endothelial dysfunction induced by high glucose and to investigate the possible role of heme oxygenase (HO)-1 in this protective action. 2. Thoracic aortic rings, with or without endothelium, obtained from male Sprague-Dawley rats were mounted in an organ bath. Isometric contraction of the rings was recorded. After completion of the organ bath studies, rings were homogenized and centrifuged (30,000 g, 4 degrees C, 15 min) and HO activity was determined in the supernatant. 3. After 2 h incubation of aortic rings in the presence of high glucose (44 mmol/L), the relaxation evoked by acetylcholine (3 x 10(-8) to 3 x 10(-5) mol/L) was significantly decreased only in rings with an intact endothelium. When rings were coincubated in the presence of curcumin (10(-13) to 10(-11) mol/L) and high glucose, curcumin reversed the vasodilator dysfunction induced by high glucose dose dependently. 4. Curcumin (10(-11) mol/L) increased HO activity in the aortic rings compared with activity in control rings (63.1 +/- 3.6 vs control 43.2 +/- 2.9 pmol/mg per h, respectively; P<0.01). Protoporphyrin IX zinc (10(-6) mol/L), an inhibitor of HO-1, offset the protective effects of curcumin. In addition, the non-selective guanylate cyclase (GC) inhibitor methylene blue (10(-6) mol/L) completely abolished the protective effects of curcumin. 5. In conclusion, the results of the present study show that curcumin alleviates the acute endothelium-dependent vasodilator dysfunction induced by high glucose in rat aortic rings. Increased HO-1 activity and stimulation of GC may be involved in the protective effects of curcumin.

Print Options

Sayer Ji
Founder of GreenMedInfo.com

Subscribe to our informative Newsletter & get Nature's Evidence-Based Pharmacy

Our newsletter serves 500,000 with essential news, research & healthy tips, daily.

Download Now

500+ pages of Natural Medicine Alternatives and Information.

This website is for information purposes only. By providing the information contained herein we are not diagnosing, treating, curing, mitigating, or preventing any type of disease or medical condition. Before beginning any type of natural, integrative or conventional treatment regimen, it is advisable to seek the advice of a licensed healthcare professional.

© Copyright 2008-2022 GreenMedInfo.com, Journal Articles copyright of original owners, MeSH copyright NLM.