Journal
CHEMICO-BIOLOGICAL INTERACTIONS
Volume 188, Issue 3, Pages 643-650Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.cbi.2010.07.026
Keywords
Chlorogenic acid; Lipids; Nicotinamide; Streptozotocin; Tetrahydrocurcumin
Funding
- University Grants Commission, New Delhi [32-605/2006]
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Diabetes mellitus is associated with dyslipidemia, which is a significant risk factor for cardiovascular complications. The present study was carried out to evaluate the effects of tetrahydrocurcumin (THC) and chlorogenic acid (CGA) alone and in combination on alterations in lipids. lipoproteins and enzymes involved in lipid metabolism in streptozotocin (STZ)-nicotinamide (NA)-induced type 2 diabetic rats. A significant (p < 0.05) increase in the concentrations of plasma and tissue (liver and kidney) lipids (cholesterol, triglycerides (TGs), free fatty acids (FFAs) and phospholipids (PLs)) and low density and very low-density lipoproteins (LDL and VLDL), and a decrease in the concentration of high-density lipoproteins (HDL) were noticed in STZ administered diabetic rats. In addition, the activity of 3-hydroxy 3-methylglutaryl coenzyme A (HMG-CoA) reductase increased significantly (p < 0.05) in the liver and kidney whereas the activities of lipoprotein lipase (LPL) and lecithin cholesterol acyl transferase (LCAT) were decreased significantly (p < 0.05) in the plasma of diabetic rats. Combined administration of CGA (5 mg/kg b.w.) and THC (80 mg/kg b.w.) for 45 days remarkably reduced the STZ-induced changes in lipids, lipoproteins and lipid metabolising enzymes when compared to the effects of CGA or THC alone in diabetic rats. These results indicate that combination of THC and CGA can potentially ameliorate lipid abnormalities in experimental type 2 diabetes. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
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