丙烯硫脲对日本血吸虫感染小鼠肝脏病变的影响

目的　观察丙烯硫脲对日本血吸虫感染小鼠肝脏病变的影响。方法　小鼠感染日本血吸虫尾蚴 2 2d后 ,隔日一次按 30 0mg/kg腹腔注射酚酶抑制剂丙烯硫脲 ,至感染后 4 2d剖杀动物 ,观察日本血吸虫感染小鼠肝脏的病理变化。结果　与感染对照组相比 ,实验组小鼠肝脏表现为散在分布的炎性细胞浸润灶 ,中心未见虫卵 ,仅见一些颗粒状物质。其平均直径和面积均较感染对照组的典型虫卵肉芽肿显著减小 (P <0 .0 1)。结论　感染小鼠腹腔注射丙烯硫脲后肝脏内未见虫卵肉芽肿的形成。

Effect of Acryl Thiourea on Liver Pathologic Changes in Mice Infected with Schistosoma japonicum

Objective To observe the effect of acryl thiourea, an inhibitor of phenol oxidase, on pathological changes in the liver of mice infected with Schistosoma japonicum . Methods From day 22 to day 42 postinfection with cercariae, the mice of the acryl thiourea group were each injected i.p. with acryl thiourea at a dose of 300 mg/kg every other day. The mice were killed on the 42nd day postinfection to observe the pathological changes in the liver. Results Compared to the infected control group, the liver tissue of the acryl thiourea group showed scattered foci of inflammatory cell infiltration, the mean diameter and area of the foci were significantly reduced ( P <0.01), and there were no eggs in the center of the foci except for some granules. Conclusion After i.p. injections of acryl thiourea, no typical egg granuloma was found in the liver of infected mice. This was possibly due to the inhibition of schistosome phenol oxidase activity and so the female adult schistosomes could not produce normal eggs.