Comparative Histopathology of Biomphalaria glabrata, B. tenagophila and B. straminea with Variable Degrees of Resistance to Schistosoma mansoni Miracidia

Memórias do Instituto Oswaldo Cruz

Cecilia Pereira De Souza¹  Claudia Cunha Borges¹  Andréa Guimarães Santana¹  Zilton A Andrade¹ 

关键词: Biomphalaria histopathology;    Schistosoma mansoni;    differential susceptibility;   

DOI  :  10.1590/S0074-02761997000400014

来源: SciELO

【 摘 要 】

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

【 授权许可】

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