Resposta imune na infecção por Leishmania infantum em modelo murino

Autores

  • Élia Cabrita Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa. Lisboa, Portugal.
  • Lenea Campino Unidade de Leishmanioses, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa. Lisboa, Portugal.
  • Carla Maia Centro de Malária e outras Doenças Tropicais, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa. Lisboa, Portugal.

DOI:

https://doi.org/10.25758/set.324

Palavras-chave:

Leishmania infantum, Resposta imune, Modelo animal, Óxido nítrico, Proliferação linfocitária, PCR em tempo real

Resumo

As leishmanioses são doenças causadas por protozoários do género Leishmania que são parasitas intracelulares obrigatórios das células fagocíticas. O objectivo deste estudo foi caracterizar a infecção por Leishmania infantum em murganhos BALB/c inoculados por via intradérmica, analisando a evolução do parasitismo e as respostas imunitárias desenvolvidas. A carga parasitária foi determinada por PCR em tempo real. Foram detectados parasitas desde o 7º dia pós‑infecção, verificando-se a disseminação visceral do parasita ao 56º dia pós-infecção. Os linfócitos dos animais do grupo infectado proliferaram em resposta à estimulação antigénica, enquanto que os macrófagos peritoneais produziram nitritos na presença do antigénio. Estes resultados demonstraram que os murganhos BALB/c inoculados por via intradérmica constituem um bom modelo experimental de leishmaniose visceral.

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Publicado

15-05-2011

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Resposta imune na infecção por Leishmania infantum em modelo murino. (2011). Saúde & Tecnologia, 05, 17-22. https://doi.org/10.25758/set.324