Fundamental studies on physiological and pharmacological actions of L-ascorbate 2-sulfate. I. On the hypolipidemic effects

Fundamental studies on physiological and pharmacological actions of L-ascorbate 2-sulfate. V. On the hypolipidemic and antiatherosclerotic effects of L-ascorbate 2-sulfate in rabbits

Effects of L-ascorbate 2-sulfate (AAS) on lipid metabolism and on pathological changes of aorta and visceral organs were investigated in cholesterol fed rabbits, with ascorbic acid (AA) and clofibrate (CPIB) as reference compounds. Administration of AAS (300 and 150 mg/kg) inhibited an increase in the levels of serum total cholesterol, free cholesterol, triglycerides and phospholipids caused by cholesterol feeding. A high dose of AAS prevented an increase of liver weight. An increase in the level of liver cholesterol was inhibited by a high dose of AAS. Both doses of AAS effectively prevented an accumulation of cholesterol in the aorta. The area rate of atheromatous plaque in aorta was less in specimens from both groups of AAS than in those from control I. Pathological changes in intima and media of aorta were milder in specimens from both groups of AAS. Developed of patholoigcal changes in arteries of various organs were prevented with both doses of AAS.

Fundamental studies on physiological and pharmacological actions of L-ascorbate 2-sulfate. VI. Effects of L-ascorbate 2-sulfate on lipid metabolism in guinea pigs

Effects of L-ascorbate 2-sulfate (AAS) on lipid metabolism were studied in guinea pigs maintained on diet I with sufficient L-ascorbic acid (AA) supplement or on diet II without AA supplement. AAS(300 mg/kg) inhibited an increase in serum and liver levels of lipids to a greater degree than AA (175 mg/kg), a reference compond, in hyperlipidemic guinea pigs induced by cholesterol feeding with diets I or II. AAS also induced a decrease in serum and liver levels of lipids in guinea pigs which had been previously maintained for 6 weeks on diet II containing 1.0% cholesterol. AA administration significantly increased AA level in various organs of animals maintained on both the diets containing cholesterol. It also rectified the AA level lowered by previous maintenance on diet II containing cholesterol. AAS showed a slight AA replacing effect on the AA level. Both AA and AAS exerted preventive and curative effects on several symptoms due to chronic AA deficiency.