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ANGIOSTRONGYLUS COSTARICENSIS AND EXPERIMENTAL INFECTION OF SARASINULA MARGINATA II: ELIMINATION ROUTES
Sarasinula marginata
Veronicellidae
Rotas migratórias
Eliminação larval
Granuloma de invertebrados
Sarasinula marginata
Veronicellidae
Migratory routes
Larval elimination
Amebocyte
Invertebrate granuloma
Author
Affilliation
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Belo Horizonte, MG, Brasil.
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Belo Horizonte, MG, Brasil.
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Belo Horizonte, MG, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Patologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Patologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Patologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Patologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Belo Horizonte, MG, Brasil.
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Belo Horizonte, MG, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Patologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Patologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Patologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Patologia. Rio de Janeiro, RJ, Brasil.
Abstract
Angiostrongylus costaricensis intermediate hosts are terrestrial mollusks mostly belonging to the Veronicellidae family. In the present investigation we focused on the mechanisms of larval expulsion from Sarasinula marginata infected with A. costaricensis. Twenty-five mollusks were individually infected with 5000 L1 and sacrificed at 30 min and 1, 2, 4, 6, and 8 h post-infection and at days 1, 2, 4, 5, 6, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 25, 26, 28, and 30 post-infection; the mollusks were then fixed and stained. Diverse organs involved throughout the course of the migratory routes of larvae from oral penetration on were specified and the mechanisms of larval access to the fibromuscular layer through the kidney, rectum, and vascular system were defined. The elimination of L3, derived from oral and/or cutaneous infections, appears to depend on granulomas located close to the excretory ducts of mucous cells.
Keywords in Portuguese
Angiostrongylus costaricensisSarasinula marginata
Veronicellidae
Rotas migratórias
Eliminação larval
Granuloma de invertebrados
Keywords
Angiostrongylus costaricensisSarasinula marginata
Veronicellidae
Migratory routes
Larval elimination
Amebocyte
Invertebrate granuloma
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