title: Histopathological changes in the kidneys of vertebrate hosts infected naturally and experimentally with Paratanaisia bragai (Trematoda, Digenea).
abstract: Paratanaisia bragai is a trematode parasite that reaches sexual maturity in the kidney collecting ducts of domesticated and wild fowl and whose intermediate hosts are the snails Subulina octona and Leptinaria unilamellata. There are some discrepancies in descriptions of the pathology of this parasite in bird kidneys. Therefore, the purpose of this study was to analyze the kidneys of rock pigeons (Columba livia) naturally infected and of chickens (Gallus gallus) experimentally infected with Paratanaisia bragai, by means of macroscopic observation and by light and scanning electron microscopy. Both bird species showed significantly dilated collecting ducts. In addition, lymphocyte infiltration was observed in the kidneys of C. livia and metaplasia in the epithelial lining of the kidney collecting ducts of G. gallus.
authors.affiliation: Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil.
authors.forename: Vanessa Barreto
authors.initials: VB
authors.lastname: Xavier
authors.affiliation: Universidade Federal do Rio de Janeiro, RJ, Brasil.
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Oliveira-Menezes
authors.affiliation: Departamento de Biologia Animal, Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil.
authors.forename: Marcos Antônio José
authors.initials: MA
authors.lastname: dos Santos
authors.affiliation: Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.
authors.forename: Suzana Bencke
authors.initials: SB
authors.lastname: Amato
authors.affiliation: Departamento de Imunologia, Microbiologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.
authors.forename: Eduardo José Lopes
authors.initials: EJ
authors.lastname: Torres
authors.affiliation: Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil.
authors.forename: Jairo
authors.initials: J
authors.lastname: Pinheiro
authors.affiliation: Departamento de Biologia Animal, Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil.
authors.forename: Solange Viana Paschoal Blanco
authors.initials: SV
authors.lastname: Brandolini
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000469:parasitology* / Q000473:pathology*; D002645:Chickens / Q000469:parasitology*; D010856:Columbidae / Q000469:parasitology*; D007668:Kidney / Q000469:parasitology* / Q000473:pathology*; D014200:Trematoda / Q000302:isolation & purification*; D014201:Trematode Infections / Q000473:pathology* / Q000662:veterinary*