Caracterização morfologica e funcional de exsudato peritoneal induzido pela jacalina em camundongos

AUTOR(ES)
DATA DE PUBLICAÇÃO

1991

RESUMO

In this work we studied the peritoneal exsudate induced by the lectin jacalin. We observed that jacalin induced large numbers of Polymorphonuclear cells (Neutrophils) within a 48 h period. After this time, the number of neutrophils decreased and the number of mononuclear cells increased. Following injection with jacalin, the number of mononuclear cells reached a maximum level within 72-96 h. Approximately 78% of the mononuclear cells were macrophages which tested positive for the non-specific esterase assay. The functional analysis of these macrophages shows that a large number of these cells express Fc gamma (85%) and C3b (91%) receptors, phagocytize particles coated with the relevant opsonins (90% to Fc and 91% to C3b), express Ia molecules (59%), present antigens to KLH-sensitized T cells and secrete IL-1 after stimulation with LPS and H2O2 after stimulation with PMA. Iterestingly, these cells did not secrete TNF after stimulation with LPS. We also demonstrated that jacalin stimulates the secretion of H2O2 in elicited peritoneal macrophages, but not IL-1 or TNF. These results indicate that jacalin is an excellent agent for the induction of peritoneal exsudate cells rich in macrophages with important effector fctions and that ?in vitro? it can trigger selective metabolic phathways in macrophages. ...Note: The complete abstract is available with the full electronic digital thesis or dissertations

ASSUNTO(S)

pesquisa imunologica imunologia

ACESSO AO ARTIGO

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