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Curcumin attenuates adhesion molecules and matrix metalloproteinase expression in hypercholesterolemic rabbits
Min Young Um1, Kwang Hyun Hwang2, Won Hee Choi3
1Metabolism and Nutrition Research Group, Korea Food Research Institute, Seongnam, South Korea.
Nutrition Research (New York, N.Y.)
|October 6, 2014
Summary
Curcumin, found in turmeric, significantly reduces atherosclerosis development in rabbits by lowering harmful cholesterol and inflammatory markers. This natural compound also decreases aortic lesions and neointima thickening, offering a potential therapeutic benefit.
Area of Science:
- Biochemistry
- Pharmacology
- Cardiovascular Research
Background:
- Atherosclerosis is a chronic inflammatory disease characterized by plaque buildup in arteries.
- Curcumin, a bioactive compound in turmeric, exhibits antioxidant and anti-inflammatory properties.
- The potential of curcumin to mitigate atherosclerosis requires further investigation.
Purpose of the Study:
- To investigate the antiatherosclerotic effects of curcumin in a rabbit model.
- To elucidate the underlying mechanisms of curcumin's action on atherosclerosis development.
Main Methods:
- New Zealand white rabbits were fed a normal diet, a high-cholesterol diet (HCD), or an HCD supplemented with 0.2% curcumin for 8 weeks.
- Serum lipid profiles, inflammatory cytokines, and soluble adhesion molecules were analyzed.
- Gene and protein expression of adhesion molecules and matrix metalloproteinases (MMPs) in aortas were assessed using quantitative real-time polymerase chain reaction and Western blot.
Main Results:
- Curcumin supplementation significantly reduced aortic lesion areas and neointima thickening compared to the HCD group.
- Curcumin markedly decreased serum levels of total cholesterol, triglycerides, LDL cholesterol, and oxidized LDL cholesterol.
- Curcumin attenuated HCD-induced expression of CD36, inflammatory cytokines, soluble adhesion molecules, and MMPs (MMP-1, MMP-2, MMP-9).
Conclusions:
- Curcumin demonstrates significant antiatherosclerotic effects in a rabbit model.
- These effects are mediated by multiple mechanisms, including lipid-lowering, reduction of oxidized LDL, and modulation of inflammatory and adhesion pathways.
- Curcumin represents a promising natural compound for the prevention and treatment of atherosclerosis.
