兔痒螨中肠和唾腺的超微结构观察

应用透射电镜对兔痒螨[Psorptes communis cuniculi (Delafond,1859)]中肠细胞和唾腺的超微结构进行了观察，结果显示兔痒螨中肠细胞肠腔面具有微绒毛，胞质内具有多量吞噬泡和各期溶酶体，近基膜胞质和基膜上有多量管状结构，是消化吸收和转运营养物质的主要场所，中肠细胞通过分裂增殖和凋亡进行细胞更新，唾腺细胞可分为3种不同生理．功能时期。

A study on ultrastructure of midgut and salivary glands of Psoroptes communis cuniculi (Delafond,1859)

To probe into red cell peroxidation injury induced by Fasciola hepatica infection,sixty rats were randomly divided into experiment group (n=30) and control group (n=30).Rats of experiment group were orally dosed 25 Fasciola hepatica metacercaniae.The blood sample were collected at pre infection and 1 9 weeks post infection in order to determine the glutathione superoxidase (GSH Px),superoxide dismutase(SOD),glutathione S transferase (GST) and malondialdehyde (MDA).The results showed that the change of GHS Px activity was not obvious,but the change in general was increased and there were no differences between experiment and control grou (P>0.05).The changes of SOD and GST activity were not significant (P>0.05).Some changes of MDA content were observed and there were significant differences (P<0.05) at 3 and 7 week between two groups.It showed that red cell peroxidation injury happened during post infection and free radicals participated in the pathogenetic coures of fascioliasis.