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Comparative histopathology of Biomphalaria glabrata, B. tenagophila and B. straminea with variable degrees of resistance to Schistosoma mansoni miracidia.
- Source :
-
Memorias do Instituto Oswaldo Cruz [Mem Inst Oswaldo Cruz] 1997 Jul-Aug; Vol. 92 (4), pp. 517-22. - Publication Year :
- 1997
-
Abstract
- A comparative histopathological study of three snails species--Biomphalaria glabrata, B. tenagophila and B. straminea--which had been infected with Schistosoma mansoni miracidia revealed similar qualitative features; consisting of areas of sporocyst proliferation and differentiation associated with reactive host reaction, at the time they were actively eliminating great number of cercariae. However, in specimens that were exposed to miracidia but failed to eliminate cercariae later on, different histopathological pictures were observed in different snail species. While B. glabrata exhibited frequent focal (granulomatous) proliferation of amebocytes in several organs, B. tenagophila and B. straminea only rarely showed such reactive changes, suggesting that the mechanism of resistance to miracidial infection probably follows different pathways in the snail species studied.
- Subjects :
- Animals
Biomphalaria physiology
Biomphalaria parasitology
Schistosoma mansoni
Subjects
Details
- Language :
- English
- ISSN :
- 0074-0276
- Volume :
- 92
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Memorias do Instituto Oswaldo Cruz
- Publication Type :
- Academic Journal
- Accession number :
- 9361747
- Full Text :
- https://doi.org/10.1590/s0074-02761997000400014