Anti-peroxidative and anti-hyperlipidemic nature of Ulva lactuca crude polysaccharide on D-Galactosamine induced hepatitis in rats

To find whether pretreatment of Ulva lactuca polysaccharide (ULP) extract could be effective against D-Galactosamine (500 mg/kg body weight, i.p.) induced anomaly in rat. Serum total cholesterol (TC), triglycerides (TG), free fatty acid (FFA), phospholipids (PL), high density lipoprotein (HDL), low density lipoprotein (LDL), very low density lipoprotein (VLDL), tissue lipoperoxides (LPO), hepatic protein thiols, non-enzymatic anti-oxidants glutathione (GSH) and vitamins (E and Q were examined using spectrophotometer. The ultra structural changes of liver during D-Galactosamine and protection offered by ULP were examined by electron microscopy. Seaweed histology and chemical composition of polysaccharides in seaweed were examined. Alcian blue staining showed the presence of sulphated polysaccharide with total sugar (65.4%), sulphate (17.4%), and uronic acid (17.2%) content. D-Galactosamine intoxicated rats showed significant (p < 0.01) liver damage with acute aberration in serum lipid profile, hepatic protein thiols and tissue non-enzymatic anti-oxidants. Assorted deposits of lipid droplets and abnormal appearance of mitochondria was observed in electron microscopy study. Rats pretreated with ULP (30 mg/kg body weight/day/for 21 days) showed a significant inhibition (p < 0.05) against abnormality induced by D-Galactosamine. U. lactuca exhibit anti-peroxidative and anti-hyperlipidemic property. (C) 2008 Elsevier Ltd. All rights reserved.