[A diabetic model for liver oxidant damage in mice].
OBJECTIVE
To observe the liver oxidant damage for diabetic model in mice.


METHODS
Male kunming mice were feed with high fat dietary for a week and then were randomly divided into two groups by weight, with 10 mice in each group. One group was induced by small dose streptozotocin (STZ) and obtained STZ-induced diabetic mice, and the other group was regarded as the control. Both of the two groups were feed with high fat dietary. After 6 weeks, the activities of enzymes, such as superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-PX) and nitric oxide synthase (NOS) were measured. Glutathione (GSH), maleic dialdehyde (MDA), nitric oxide (NO) levels in the liver and the liver viscera quotient were also measured. Liver histological manifestations were observed.


RESULTS
In diabetes group, there was a significant decrease in body weight, and the activities of GSH, CAT, and NOS decreased significantly (t value were 5.370, 10.639, 5.235, 3.089, respectively, P < 0.01). While, the liver viscera quotient, the levels of MDA, GSH-PX and NO increased remarkably (t value were -6.246, -2.728, -2.660, -4.924, respectively, P < 0.01 or P < 0.05). The significant difference was not observed in SOD between the two groups (t value was -0.405, P > 0.05). The liver histological damages were observed in diabetes group, light microscope observation showed hepatocytes swelling, ballooned changing and fatty droplets clustering.


CONCLUSIONS
The oxidant damage might exist in the liver diabetic model in mice.
Jiao
Shi-Rong
SR
School of Public Health, Sichuan University, Chengdu 610041, China.
Wang
Bo
B
Huang
Cheng-Yu
CY
Yu
Shuang
S
Yin
Wen-Ya
WY
D000818:Animals; D003921:Diabetes Mellitus, Experimental / Q000378:metabolism* / Q000473:pathology; D008099:Liver / Q000378:metabolism* / Q000473:pathology; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D009569:Nitric Oxide / Q000378:metabolism; D018384:Oxidative Stress; D013482:Superoxide Dismutase / Q000378:metabolism
D009569:Nitric Oxide; D013482:Superoxide Dismutase