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Curcumin attenuates diet-induced hypercholesterolemia in rats
1Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Nasr City, Cairo, Egypt. hmmarafa@yahoo.com
Summary
Curcumin, derived from turmeric, effectively lowers cholesterol in rats fed a high-cholesterol diet. This spice may offer a natural approach to managing lipid levels, particularly in high-fat diets.
Area of Science:
- Nutritional Biochemistry
- Pharmacology
Background:
- Curcumin, a turmeric component, is traditionally used as a spice and food coloring.
- Experimental studies suggest curcumin possesses anti-diabetic, anti-inflammatory, cytotoxic, and antioxidant properties.
Purpose of the Study:
- To investigate the potential hypolipidemic (lipid-lowering) effects of curcumin.
- To assess curcumin's impact on lipid profiles and liver enzymes in a rat model of hypercholesterolemia.
Main Methods:
- Rats were fed a high-cholesterol diet (HCD) for seven days to induce hypercholesterolemia.
- Curcumin was administered orally (0.5% w/w) mixed with the HCD.
- Serum lipid profiles (Total Cholesterol, LDL-C, HDL-C), AST, and ALT activities were measured.
- Liver antioxidant parameters (GSH, SOD) were assessed.
Main Results:
- HCD induced hypercholesterolemia, increasing total cholesterol and LDL-C while decreasing HDL-C.
- Curcumin supplementation significantly reduced total cholesterol (21%) and LDL-C (42.5%) and increased HDL-C (50%).
- Curcumin also normalized elevated AST and ALT enzyme activities seen in HCD-fed rats.
Conclusions:
- Curcumin demonstrates a significant hypocholesterolemic effect, likely by influencing cholesterol absorption, degradation, or elimination.
- The lipid-lowering effect of curcumin in this study was not attributed to an antioxidant mechanism.
- Dietary curcumin may offer a beneficial lipid-lowering strategy, especially in diets high in fat.