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Activation and IL-1B secretion of human peripheral phagocytes infected with Actinomadura madurae,Nocardia asteroides and Candida albicans

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Asian Pacific Journal of Tropical Medicine 2016年第10期9卷 939-944页

作者： Alejandro Palma-Ramos gilberto casillas-petriz Laura Estela Castrillon-Rivera Jorge Ismael Castaneda-Sanchez Roberto Arenas-Guzman Maria Elisa Drago-Serrano Teresita Sainz-Espunes Department of Biological Systems Autonomous Metropolitan University Campus XochimilcoCalzada del Hueso No.1100Ciudad de Mexico 04960Mexico Service of Dermatology and Mycology General Hospital ‘Manuel Gea Gonzalez’Calzada de Tlalpan 4800TlalpanSeceion XVI14080 Ciudad de MexicoMexico

Objective: To evaluate the ability of Actinomadura madurae(A. madurae) and Nocardia asteroids(N. asteroides), using Candida albicans(C. albicans) as prototypic control, to elicit the activation and IL-1β secretion of blood phagocytic cells from healthy donors. Methods: Microcopic evaluation of phagocytosis/activation, cell viability and spectrophotometric quantitation of endocytosis/activation, were assessed by using formazan blue test in human blood phagocytes infected with C. albicans, A. madurae or N. asteroides treated with either normal human serum(NHS) or with decomplemented NHS. Interlukin-1β from culture supernatants of infected polymorphonuclear was tested by ELISA kit assay. Results: Microscopic assay showed that phagocytosis and activation of adherent mononuclear phagocytes were greater with C. albicans followed by A. madurae and then by N. asteroides. Spectrophotometric assay in polymornuclear phagocytes infected with NHS-treated pathogens indicated that activation was similarly higher by C. albicans and A. madurae and lower by N. asteroides. Kinetic assays in infected polymorphonuclear cells showed that viability was decreased by C. albicans and N. asteroides or unaffected with A. madurae. Levels of IL-1β at 8 h of incubation were higher with C. albicans followed by A. madurae whereas lower levels were found with N. asteroides. Conclusions: The extent of cell-viability and activation as well IL-1β secretion may be related with the virulence of C. albicans and N. asteroides and other parameters remain to be explored for assesing the virulence of A. madurae.

关键词： Interleukin-1B Phagocytosis Actinomycetoma Formazan blue assay

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