Tissue reactions induced by Schistosoma mansoni in Biomphalaria glabrata. 1980

K J Lie, and K H Jeong, and D Heyneman

In Biomphalaria glabrata with a strong natural resistance, Schistosoma mansoni sporocysts are rapidly encapsulated by granulocytes and killed, mainly by the strong phagocytic activity of the cells. Irradiated Echinostoma paraensei sporocysts seem able to suppress the function of the granulocytes. Tissue reactions in snails with self-cure demonstrate: involvement of two types of cells, granulocytes and hyalinocyte-like cells; formation of amoeba-fibrous capsules; limited tendency of granulocytes to become attracted to the parasites; a slow process of parasite destruction; and a possible involvement of humoral factors. It seems that there is partial suppression of the granulocyte function in smails with self-cure.

UI MeSH Term Description Entries
D004449 Echinostoma A genus of intestinal flukes of the family Echinostomatidae which consists of many species. They occur in man and other vertebrates. The intermediate hosts are frequently mollusks. Echinostoma ilocanum,Euparyphium ilocanum,Fascioletta ilocanum,Echinostoma ilocanums,Echinostomas,Euparyphium ilocanums,Fascioletta ilocanums,ilocanum, Echinostoma,ilocanum, Fascioletta,ilocanums, Euparyphium
D006098 Granulocytes Leukocytes with abundant granules in the cytoplasm. They are divided into three groups according to the staining properties of the granules: neutrophilic, eosinophilic, and basophilic. Mature granulocytes are the NEUTROPHILS; EOSINOPHILS; and BASOPHILS. Granulocyte
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001700 Biomphalaria A genus of planorbid freshwater snails, species of which are intermediate hosts of Schistosoma mansoni. Australorbis,Australorbis glabratus,Australorbi,Biomphalarias
D012550 Schistosoma mansoni A species of trematode blood flukes of the family Schistosomatidae. It is common in the Nile delta. The intermediate host is the planorbid snail. This parasite causes schistosomiasis mansoni and intestinal bilharziasis. Schistosoma mansonus,mansonus, Schistosoma

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