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Quantification of Intracellular Growth Inside Macrophages is a Fast and Reliable Method for Assessing the Virulence of Leishmania Parasites
Published on: March 16, 2018
El tercer componente del complemento (C3) es responsable de la supervivencia intracelular de la Leishmania mayor
Nature
|May 3, 1987
Resumen
La fijación del complemento ayuda a los parásitos Leishmania a evadir las respuestas inmunes. Los parásitos cubiertos de complemento sobreviven mejor dentro de los macrófagos al reducir la célula huésped.
Área de la Ciencia:
- Inmunología Inmunología.
- Parasitología Parasitología.
- Biología celular Biología celular.
Sus antecedentes:
- Los parásitos Leishmania son patógenos intracelulares obligados.
- La activación del complemento por las promastigotas de Leishmania puede conducir a la lisis del parásito.
- El complemento se considera crucial para la defensa del huésped contra la leishmaniasis.
Objetivo del estudio:
- Para investigar el papel de la fijación del complemento parásito en la supervivencia intracelular de Leishmania.
- Para determinar la correlación entre la fijación del complemento C3 y la supervivencia de los parásitos dentro de los macrófagos.
Principales métodos:
- Evaluación de la activación del complemento por Leishmania promastigotes.
- Cuantificación de la fijación C3 del parásito.
- La medición de la supervivencia intracelular de Leishmania en los macrófagos.
- Analizando la respuesta al estallido respiratorio del macrófago.
Principales resultados:
- La fijación del complemento parasitario mejora la fagocitosis y es esencial para la supervivencia intracelular.
- Existe una fuerte correlación entre la fijación del parásito C3 y las tasas de supervivencia intracelular.
- Los parásitos recubiertos de complemento provocan una reducción de la explosión respiratoria de los macrófagos en comparación con los parásitos no recubiertos.
Conclusiones:
- La fijación del complemento es un mecanismo clave para la supervivencia intracelular de Leishmania.
- La reducción de la explosión respiratoria de los macrófagos contribuye a la supervivencia de los parásitos.
- La fijación del complemento juega un doble papel en las interacciones Leishmania-macrófago.
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