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1.
Mem. Inst. Oswaldo Cruz ; 106(6): 735-741, Sept. 2011. ilus, tab
Article in English | LILACS | ID: lil-602058

ABSTRACT

Multinucleated giant cells (MGC) are cells present in characteristic granulomatous inflammation induced by intracellular infectious agents or foreign materials. The present study evaluated the modulatory effect of granulocyte macrophage colony-stimulating factor (GM-CSF) in association with other cytokines such as interferon-gamma (IFN-γ), tumour necrosis factor-alpha, interleukin (IL)-10 or transforming growth factor beta (TGF-β1) on the formation of MGC from human peripheral blood monocytes stimulated with Paracoccidioides brasiliensis antigen (PbAg). The generation of MGC was determined by fusion index (FI) and the fungicidal activity of these cells was evaluated after 4 h of MGC co-cultured with viable yeast cells of P. brasiliensis strain 18 (Pb18). The results showed that monocytes incubated with PbAg and GM-CSF plus IFN-γ had a significantly higher FI than in all the other cultures, while the addition of IL-10 or TGF-β1 had a suppressive effect on MGC generation. Monocytes incubated with both pro and anti-inflammatory cytokines had a higher induction of foreign body-type MGC rather than Langhans-type MGC. MGC stimulated with PbAg and GM-CSF in association with the other cytokines had increased fungicidal activity and the presence of GM-CSF also partially inhibited the suppressive effects of IL-10 and TGF-β1. Together, these results suggest that GM-CSF is a positive modulator of PbAg-stimulated MGC generation and on the fungicidal activity against Pb18.


Subject(s)
Adult , Humans , Middle Aged , Young Adult , Antigens, Fungal/pharmacology , Cytokines/immunology , Giant Cells/drug effects , Granulocyte-Macrophage Colony-Stimulating Factor/pharmacology , Monocytes/immunology , Paracoccidioides/drug effects , Cells, Cultured , Giant Cells/immunology , Paracoccidioides/immunology
2.
Managua; s.n; abr. 2005. 87 p. tab, graf.
Monography in Spanish | LILACS | ID: lil-426036

ABSTRACT

Conocer el comportamineto clínico y epidemológico de los pacientes diagnosticados con las principales micosis profundas que acudieron al Centro Nacional de DermatologíaDermatología “Dr. Francisco José Gómez Urcuyo” durante el período del 1 de enero del 2000 al 31 de diciembre del 2004. Es un estudio de tipo descriptivo, de corte transversal, utilizando técnicas cuantitativas que permiten el estudio de variables. El universos y muestra estuvo constituido por 23 pacientes que acudieron al Centro Nacional de Dermatología. Los principales resultados fueron: la población mayormente afectada por micosis profunda son los de más de 46 años,con predominio en el sexo masculino, de procedencia rural, los agricultores fue la ocupación más predominante. El diagnóstico principal encontrado en orden descendente fue Cromomicosis, seguido de Esporotricosis y el Eumicetoma, utilizando fueron antimicóticos, otros recibieron criocirugía y terapia combinada. Las principales recomendaciones fueron: desarrollar un sistema de control administrativo-estadístrico que permita la fácil obtención de los expedientes, enviar a todos los pacientes los exámenes complementarios para su estudio. Describir bien los tratamiento con un seguimiento oportuno, vigilando las reacciones adversas que puedan presentar...


Subject(s)
Antigens, Fungal/pharmacology , Antigens, Fungal/therapeutic use , Biopsy/methods , Cryosurgery , Cryosurgery/methods , Chromoblastomycosis/diagnosis , Chromoblastomycosis/epidemiology , Chromoblastomycosis/therapy , Sporotrichosis/epidemiology , Sporotrichosis/therapy
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