The liver tissue was homogenized with 0.9%
sodium chloride solution to make a 10% hepatic
mixture, which was then centrifugated at 2 000 g
for 10–15 min, the upper pellucid liquid was taken
for parameter determination. The SOD activity was
determined by colorimetry according to the assay
kit provided by Nanjing Jiancheng Bioengineering
Institute. ApoA, apoB and MDA contents were
determined with a UV-2000 spectrophotometer
(UNICO Instruments Co., Ltd., Shanghai, China)
using analysis kits provided by Ningbo City Biochemical
Reagent Factory and Nanjing Jiancheng
Bioengineering Institute, China.