Serum lipid response of adult male rats to levels of either casein or stewed bean protein

ABSTRACT

The effects of feeding casein and stewed bean protein for seven weeks on serum lipids, lipoproteins and on liver and heart lipids concentrations in adult male albino rats were investigated. Diets were planned to provide 10% or 20% protein from either casein or stewed bean, 6% fat with no cholesterol was added. Levels of protein used had no significant effects on serum lipids and lipoproteins for rats fed casein diets. Whereas 20% bean protein group had significantly higher concentrations of serum HDL-cholesterol [HDL-c], LDL-cholesterol [LDL-c], triacylgycerol and the ratio of HDL-cholesterol to total cholesterol. As compared to casein, 10% bean protein had significantly lower. LDL-c, LDL-c, HDL-c to total cholesterol ratio, triacylglycerol and total lipid, while total cholesterol was significantly increased. Whereas at 20% protein level bean diet reduced serum triacylglycerol and increased total lipids concentrations Rats fed bean diets had significantly lower liver cholesterol while liver triacylglycerol increased. Also heart cholesterol, tricylglycerol and phospholipids concentrations were significantly increased for rats fed 10% bean protein, whereas for group fed 20% bean protein only heart triacylglycerol was affected