| Full text | |
| Author(s): Show less - |
Costa-Silva, Samira
;
Sacristan, Carlos
;
Gonzales-Viera, Omar
;
Diaz-Delgado, Josue
;
Sanchez-Sarmiento, Angelica Maria
;
Marigo, Juliana
;
Groch, Katia Regina
;
Carvalho, Vitor Luz
;
Ewbank, Ana Carolina
;
Colosio, Adriana Castaldo
;
Calzavara Marcondes, Milton Cesar
;
Oliveira de Meirelles, Ana Carolina
;
Bertozzi, Carolina P.
;
Lailson-Brito, Jose
;
Azevedo, Alexandre de Freitas
;
Ruoppolo, Valeria
;
Oliveira, Larissa
;
Ott, Paulo Henrique
;
Catao-Dias, Jose Luiz
Total Authors: 19
|
| Document type: | Journal article |
| Source: | REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA; v. 28, n. 3, p. 8-pg., 2019-07-01. |
| Abstract | |
Toxoplasmosis is a parasitic disease caused by the protozoan Toxoplasma gondii. In cetaceans, T gondii infection is a significant cause of morbidity and mortality. Despite the worldwide range and broad cetacean host record of T gondii infection, there is limited information on toxoplasmosis in cetaceans from the Southern hemisphere. We investigated the occurrence of T gondii by histopathology and immunohistochemistry in tissue samples of 185 animals comprising 20 different cetacean species from Brazil. Three out of 185 (1.6%) animals presented T gondii-associated lesions: a captive killer whale Orcinus orca, a free-ranging common bottlenose dolphin Tursiops truncatus and a free-ranging Guiana dolphin Sotalia guianensis. The main lesions observed in these animals were necrotizing hepatitis, adrenalitis and lymphadenitis associated with protozoal cysts or extracellular tachyzoites presenting immunolabcling with anti- T gondii antibodies. This study widens the spectrum of species and the geographic range of this agent in Brazil, and provides the first reports of T gondii infection in a captive killer whale and in a free-ranging common bottlenose dolphin in South America. (AU) | |
| FAPESP's process: | 17/02223-8 - Comparative immunopathology of cetacean morbillivirus infection: histologic, immunohistochemical, and molecular studies |
| Grantee: | Josué Díaz Delgado |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |