CLEUSA FUMICA HIRATA TAKAKURA
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Patologia, Faculdade de Medicina
4 resultados
Resultados de Busca
Agora exibindo 1 - 4 de 4
- Detection of Toxoplasma gondii in two southern Wooly spider monkeys (Brachyteles arachnoides - Geoffroy, 1806) from the Rio de Janeiro primate center, Brazil(2014) SANTOS, S. V.; STREFEZZI, R. F.; PISSINATTI, A.; KANAMURA, C. T.; TAKAKURA, C. F. H.; DUARTE, M. I. S.; CATAO-DIAS, J. L.BackgroundToxoplasmosis led to the death of two Brachyteles arachnoides, an endangered atelid. MethodsThe diagnosis was established by necropsy, histopathological, immunohistochemical and ultrastructural changes. ResultsThe analysis confirms the presence of Toxoplasma gondii. ConclusionsThis report contributes to the development of protocols for health surveillance on maintenance and conservation of southern muriquis.
- Renal Lesions in Cetaceans from Brazil(2015) GONZALES-VIERA, O.; RUOPPOLO, V.; MARIGO, J.; CARVALHO, V. L.; GROCH, K. R.; BERTOZZI, C. P.; TAKAKURA, C.; NAMIYAMA, G.; VANSTREELS, R. E. T.; CATAO-DIAS, J. L.This study reports the occurrence of renal lesions in cetaceans from the coast of Brazil subjected to necropsy examination between 1996 and 2011. The animals (n = 192) were by-caught in fishing nets, were found dead on beaches or died despite attempted rehabilitation. Kidney samples were evaluated grossly and microscopically and, depending on the histopathological findings, immunohistochemical and ultrastructural analyses were conducted. Due to autolysis, a diagnosis was reached in only 128 animals, of which 82 (64.1%) had kidney lesions. Cystic renal disease was the most common lesion observed in 34 cases (26.6%) and these were classified as simple cysts in eight cases (6.3%), polycystic kidney disease in one rough-toothed dolphin (Steno bredanensis), secondary glomerulocystic disease in 16 cases (12.5%) and primary glomerulocystic disease in nine cases (7%). Other lesions included membranous glomerulonephritis (28 cases; 21.9%), membranoproliferative glomerulonephritis (20 cases; 15.6%), lymphoplasmacytic interstitial nephritis (21 cases; 16.4%), lipidosis (19 cases; 14.8%), glomerulosclerosis (8 cases; 6.3%) and pyogranulomatous nephritis (five cases; 3.9%); two of the later were associated with the migration of nematode larvae. Additionally, tubular adenoma was identified in a Franciscana (Pontoporia blainvillei). The pathological implications of these lesions are discussed according the cause of death, age or sex of the animals. Furthermore, the lesions were compared with those of other marine and terrestrial mammals, including man.
- Toxoplasmosis in a Guiana dolphin (Sotalia guianensis) from Parana, Brazil(2013) GONZALES-VIERA, O.; MARIGO, J.; RUOPPOLO, V.; ROSAS, F. C. W.; KANAMURA, C. T.; TAKAKURA, C.; FERNANDEZ, A.; CATAO-DIAS, J. L.This study describes toxoplasmosis in a by caught Guiana dolphin (Sotalia guinensis) from Paranagua Bay, Parana, Brazil. Interstitial pneumonia, multisystemic arteritis, multifocal adrenalitis and hepatitis were the primary lesions observed. These tissues had moderate to severe necrosis and mononuclear cells infiltration usually surrounded by tachyzoites and tissue cysts. Moderate lymphoid depletion was evident in the spleen. Toxoplasma gondii was positive by immunohistochemical and ultrastructural evaluation. Furthermore, the animal was negative for Morbillivirus by immunohistochemistry and had low levels of persistent organochlorines. There is evidence of environmental changes in the Paranagua Bay that could justify the occurrence of toxoplasmosis in Guiana dolphin. The sewage run-off from main urban areas and the presence of domestic and wild felids in areas surrounding the bay could be a source of T. gondii oocysts from land to sea. Based on its habitat, the authors recommend this dolphin species as sentinels for the health of bays and estuaries where they occur. Crown
- Respiratory syncytial virus (RSV) pneumonia in a southern muriqui (Brachyteles arachnoides)(2012) SANTOS, S. V.; STREFEZZI, R. F.; PISSINATTI, A.; TAKAKURA, C. F. H.; KANAMURA, C.; DUARTE, M. I. S.; CATAO-DIAS, J. L.Background An adult male Brachyteles arachanoides, kept in captivity since 1990, was found dead without apparent clinical evidence. Methods Necropsy report, histopathology, immunohistochemistry, and ultrastructural examination were conducted. Results Pulmonary syncytial cells were positive for respiratory syncytial virus (RSV), and ultrastructural examination revealed viral particles inside macrophages compatible with the Paramyxoviridae family. Conclusions Muriquis are susceptible to RSV pneumonia followed by respiratory distress syndrome and death.