We examined the effects of oyster (Ostrea en gingas Thunb.) water extr
acts on hyperlipemia and liver injury produced in rats by feeding on p
eroxidized oil. The extracts of oyster were found to reduce the levels
of serum free fatty acid, triglyceride, lipid peroxide and liver chol
esterol in the peroxidized oil-treated rats. In addition, we found tha
t the water extracts of oyster inhibited adrenaline-induced lipolysis,
and that these extracts stimulated lipogensis from glucose in isolate
d fat cells of rats. The active substance was isolated and identified
as adenosine by direct comparison with an authentic sample. (C) 1998 E
lsevier Science Ireland Ltd.