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Phytother Res. 2001 Jun;15(4):277-89.

Rice bran oil and gamma-oryzanol in the treatment of hyperlipoproteinaemias and other conditions.

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Atherosclerosis and Dysmetabolic Disease Study Center 'G. Descovich', Clinical Medicine and Applied Biotechnology Dept. 'D. Campanacci', University of Bologna, Italy.


Diet is the first (and sometimes the only) therapeutic approach to hyperlipoproteinaemias. Rice bran oil and its main components (unsaturated fatty acids, triterpene alcohols, phytosterols, tocotrienols, alpha-tocopherol) have demonstrated an ability to improve the plasma lipid pattern of rodents, rabbits, non-human primates and humans, reducing total plasma cholesterol and triglyceride concentration and increasing the high density lipoprotein cholesterol level. Other potential properties of rice bran oil and gamma-oryzanol, studied both in vitro and in animal models, include modulation of pituitary secretion, inhibition of gastric acid secretion, antioxidant action and inhibition of platelet aggregation. This paper reviews the available data on the pharmacology and toxicology of rice bran oil and its main components with particular attention to those studies relating to plasma lipid altering effects.

[Indexed for MEDLINE]

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