Massoud Ahmad, Metwally Doreya M, Khalifa Khalifa E, Habib Faiza S M
Department of Tropical Medicine, Faculty of Medicine, Al Azhar University, Nasr City, Cairo, Egypt.
J Egypt Soc Parasitol. 2004 Dec;34(3):995-1008.
The effect of exposing B. alexandrina to sub-lethal dose (LC10 & LC20) of Myrrh, on its susceptibility to infection with S. mansoni miracidia were determined. Starting three weeks post miracidial exposure, cercarial shedding was monitored. No shedding of cercariae were observed from snails treated with LC20. In snails treated with LC10, longer prepatent cercarial and shorter cercarial production periods than those of control group were recorded. The number of infected snails and of shedding cercariae were decreased. The study revealed that sublethal values of myrrh decreased the compatibility of B. alexandrina to S. mansoni infection thus playing an important role in the control of schistosomiasis.
测定了将亚历山大藻暴露于没药的亚致死剂量（LC10和LC20）对其感染曼氏血吸虫毛蚴易感性的影响。从毛蚴暴露后三周开始，监测尾蚴逸出情况。用LC20处理的蜗牛未观察到尾蚴逸出。在用LC10处理的蜗牛中，与对照组相比，记录到尾蚴前期更长且尾蚴产生期更短。感染蜗牛和逸出尾蚴的数量减少。该研究表明，没药的亚致死值降低了亚历山大藻对曼氏血吸虫感染的易感性，从而在血吸虫病控制中发挥重要作用。
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