The effects of betaine supplementation on non-alcoholic
steatohepatitis (NASH) model mice were examined by measuring the accumulation
of fat in the livers of NASH model mice compared to a control. Betaine from
sugar beets was provided to the model mice as a dietary supplement. After 3 wk
of dietary supplementation. there were no significant differences in body
weight or liver weight between the groups. However, the liver to body weight
ratio in the high-fat diet with betaine (HM) group was significantly higher
than that in the high-fat diet (HF) group. There were no differences in scrum
triglyceride (TG) concentrations. AST and ALT activities, or hepatic
glutathione concentrations between the groups. Hepatic TG level in the Ha group
was significantly lower than that in the HF group. Hepatic cells obtained from
the HF group showed increased occurrence of explosive puff and necrosis as
compared with those in the HFB group. Betaine supplementation had an inhibitory
effect on fat accumulation in the liver: the Oil red-positive area in the Ha
group (0.82 +/- 0.85%) was significantly smaller than that in the HF group
(9.06 +/- 2.24%). These results indicate the potential of betaine to serve as
an agent for amelioration of hepatic steatosis in NASH model mice.