JOURNAL ARTICLE

Proinflammatory cytokines secreted by monocytes of filarial patients

U Raman, D Eswaran, R B Narayanan, K Jayaraman, P Kaliraj
Microbiology and Immunology 1999, 43 (3): 279-83
10338198
The levels of interleukin 1, granulocyte macrophage colony stimulating factor (GM-CSF) and tumour necrosis factor (TNF)-alpha secreted by the monocytes of filarial patients, such as asymptomatic microfilaremics (MF), chronic pathology (CP), and normal individuals, residing in a Wuchereria bancrofti endemic area (EN) in response to whole Brugia malayi antigen (BmA) and Setaria digitata (Sd-cuticular) and a recombinant filarial antigen (pRJ51) were studied. Stimulation of peripheral blood adherent cells with whole parasite antigen showed marked increase in IL-1 levels in MF as compared to CP or EN. The recombinant antigen stimulation, however, resulted in similar levels of IL-1 in MF and CP. In contrast, stimulation of peripheral blood adherent cells with whole parasite antigen produced high levels of GM-CSF and TNF-alpha in CP as opposed to MF or EN. Recombinant antigen stimulation, however, produced high levels of GM-CSF in EN as compared to MF or CP, while no significant change in the release of TNF-alpha was observed in these patients. These results suggest that monocytes from filarial patients exhibit functional activity similar to that observed by the monocytes of endemic normals (control group).

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