Isolation of Trypanosoma cruzi from blood by histopaque and continuous percoll gradient centrifugations

Separation of the blood forms of trypanosomes from the blood of infected animals is difficult, especially in the case of Trypanosoma cruzi Y strain. Two procedures to isolate the Y strain blood forms of T. cruzi using polyvinyl pyrrolidone-coated silica (percoll) and histopaque are reported in this...

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Published inApplied biochemistry and biotechnology Vol. 33; no. 3; p. 183
Main Authors Gomes, Y M, Carvalho, A B, Santos, M L, Cavalcanti, V M, Monjour, L
Format Journal Article
LanguageEnglish
Published United States 01.06.1992
Subjects
Animals
Antigens, Protozoan - analysis
Blood - parasitology
Centrifugation - methods
Mice
Trypanosoma cruzi - immunology
Trypanosoma cruzi - isolation & purification
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Summary:Separation of the blood forms of trypanosomes from the blood of infected animals is difficult, especially in the case of Trypanosoma cruzi Y strain. Two procedures to isolate the Y strain blood forms of T. cruzi using polyvinyl pyrrolidone-coated silica (percoll) and histopaque are reported in this study. The recovery rates of parasites were 16 +/- 5 and 68 +/- 16%, respectively. The parasites isolated by these methods presented normal motility and morphology and were infective to albino mice with prepatent periods, parasitemia curves, and polymorphism patterns during the infection that were similar to those of control parasites. In addition, the preservation of surface antigens was confirmed by immunocytochemical studies.
ISSN:0273-2289
DOI:10.1007/BF02921834