The effects of dietary octopine, which is one of the major extractive component of marine molluscs, on the level of serum and liver cholesterol of rats fed with cholesterol-enriched or cholesterol-free diets were investigated. Dietary supplementation with 1.5% octopine in a cholesterol-enriched diet significantly decreased the serum total- and VLDL+LDL-cholesterol levels and by contrary increased the serum HDL-cholesterol level in rats. The same tendency was observed in the rats fed with 1.5% octopine in a cholesterol-free diet.
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