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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 95, No. 4, 2000, pp. 445-452
Bioline Code: oc00071
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 95, No. 4, 2000, pp. 445-452

 en Trypanosoma cruzi Infection in Leontopithecus rosalia at the Reserva Biolgica de Poo das Antas, Rio de Janeiro, Brazil
Cristiane V Lisboa; James Dietz; Andrew J Baker; Ndia N Russel & Ana M Jansen

Abstract

Wild golden lion tamarins (Leontopithecus rosalia) - endangered primates that are native to the Brazilian Atlantic coastal forest - were surveyed for the presence of Trypanosoma cruzi with the use of Giemsa-stained blood smears, hemocultures and an indirect immunofluorescence assay (IFAT). Positive IFAT with titers ranging from 1:20 to 1:1280 were observed in 52% of the 118 wild tamarins examined and the parasite was isolated from 38 tamarins. No patent parasitemia was observed among the tamarins from which T. cruzi was isolated. Serum conversion and positive hemoculture was observed for three animals that had yielded negative results some months earlier, which indicates that T. cruzi is actively transmitted among tamarins. In contrast to observations with other sylvatic isolates, those from the tamarins were significantly more virulent and most of them produced mortality in experimentally infected Swiss mice. Some variation in the kDNA restriction profiles among the isolates was observed. Electrophoresis with GPI, G6PDH, IDH, MDH and ME enzymes showed a Z2 profile.

Keywords
Trypanosoma cruzi, Leontopithecus rosalia, sylvatic cycle, electrophoresis profiles, Brazil Trypanosoma cruzi, a kinetoplastid

 
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