Experiments demonstrated that infestation with the oligochaete worm, Chaetogaster limnaei, afforded a degree of protection to the snail Australorbis glabratus when the snail was exposed to Schistosoma mansoni miracidia. To a lesser extent, the oligochaetes protected snails exposed to echinostome cercariae. The presence of C. limnaei within the kidney of the snail Physa heterostropha is reported...

One of the most deadly neglected tropical diseases known to man is schistosomiasis. Understanding how disease spreads and evaluating relevant control strategies are key steps in predicting its spread. We propose a mathematical model evaluate potential impact four strategies: chemotherapy, awareness programs, mechanical removal snails molluscicides, change temperature on different molluscicide p...

schistosomiasis is the second most common parasitic cause of death, after malaria. biomphalaria glabrata is a fresh water snail with medical importance since it is the intermediate host of schistosoma mansoni, an agent of schistosomiasis. the internal defense system of b. glabrata snails is mostly represented by circulating elements of the hemolymph, hemocytes, which are important factors in fi...

Two cathepsin L proteinases, cathepsin L1 and cathepsin L2, secreted by liver flukes may be involved in tissue penetration, nutrition, and protection from immune attack. To ascertain the immunoprophylactic potential of these proteinases, and of another molecule, liver fluke hemoglobin (Hb), we performed vaccine trials in cattle. In the first vaccine trial various doses of cathepsin L1 were test...

The effect of sublethal concentrations of the antihelminthic plant derivative, dihydroartemisinin methyl ether (Artemether) on the infectivity of the larval stages of Schistosoma haematobium to Bulinus truncatus and to hamster (Mesocricetus auratus) and certain physiological parameters of B. truncatus snails was studied. The results obtained showed infectivity of B. truncatus to infection with ...