二苯乙烯低聚体对小鼠实验性肝损伤的影响

目的　研究二苯乙烯低聚体(Gn-3)对各种不同类型实验性肝损伤的影响。方法　用小鼠CCl4、醋氨酚和免疫性肝损伤模型，以血清ALT水平，肝脏MDA和GSH含量，肝脏指数和光镜下组织病理变化为观测指标，观察Gn-3预防给药对肝损伤的影响。结果　Gn-3预防给药3d可降低上述3种类型肝损伤小鼠血清ALT水平、肝脏MDA含量，改善组织病理变化，但对肝脏GSH含量无显著影响。结论　Gn-3对3种不同类型的肝损伤均有不同程度的保护作用。

EFFECT OF STILBENE POLYMER (Gn-3) ON EXPERIMENTAL LIVER INJURIES IN MICE

AIM: To study the protective effect of Gn-3 (a stilbene polymer isolated from Gnetum parvifolium) against liver injury induced by CCl4, N-acetyl-p-aminophenol (APAP) and Bacillus Calmette-Guerin (BCG) plus bacterial lipopolysaccharide (LPS) in mice. METHODS: The experimental model of liver injury were induced by 0.1% CCl4 i.p. (10 mL.kg-1.d-1 for 3d), APAP i.p. (150 mg.kg-1) or BCG (5 mg) plus LPS (7.5 micrograms) in mice. The levels of ALT in serum, MDA and GSH in liver tissues were detected. The histopathologic changes were observed by light microscope. RESULTS: Gn-3 was shown to markedly reduce the elevated serum ALT levels, liver tissue MDA and improve the histopathological changes in all the three experimental liver injury models. No effect of Gn-3 was observed on the liver GSH level in liver injury mice. CONCLUSION: Gn-3 was found to inhibit the development of liver injury caused by CCl4, APAP, or BCG plus LPS. This means that Gn-3 has liver protective effects.