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Biocell ; 24(3): 217-222, Dec. 2000.
Artigo em Inglês | LILACS | ID: lil-335896

RESUMO

The localization and subcellular distribution of Trypanosoma cruzi nitric oxide synthase was investigated in epimastigote cells by immunocytochemistry at electron and light microscope level, using a polyclonal antibody to neuronal nitric oxide synthase, and also, at light microscope level, by the nicotinamide adenine dinucleotide phosphate-diaphorase histochemical reaction. The immunoreactivity was ultrastructurally localized by electron microscopy in the inner surface of cell membranes and in free cytosolic clusters in the body, flagellum and apical extreme. Light microscopy showed that immunoprecipitates, specific for the Trypanosoma cruzi nitric oxide synthase, co-localized with the formazan precipitates generated by the diaphorase reaction in the same areas identified by electron microscopy. These results, taken together with previous finding from our laboratory could help to explain the involvement of the nitric oxide transduction pathway in T. cruzi epimastigote motility.


Assuntos
Animais , Movimento Celular , Óxido Nítrico Sintase , Óxido Nítrico/metabolismo , Transdução de Sinais/fisiologia , Trypanosoma cruzi , Compartimento Celular , Membrana Celular , Flagelos
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