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Netea, M.G. et al.

Netea, Stuyt, Kim, Van der Meer, Kullberg, Dinarello,

The role of endogenous interleukin (IL)-18, IL-12, IL-1beta, and tumor necrosis factor-alpha in the production of interferon-gamma induced by Candida albicans in human whole-blood cultures.

Despite the importance of interferon (IFN)-gamma, tumor necrosis factor (TNF), and interleukin (IL)-18 for host defense against candidiasis, the pathways leading to their stimulation by Candida albicans are unclear. In a whole-blood model, IL-18 neutralization by IL-18 binding protein decreased C. albicans- induced IFN-gamma synthesis by 72%. Similarly, neutralization of IL-12 or IL-1beta by either neutralizing antibodies or IL-1 receptor antagonist also reduced (by 65%) IFN-gamma production. Neutralization of TNF by TNF binding proteins resulted in only a 36% reduction of IFN-gamma synthesis. In contrast, production of TNF and IL-8 was largely unaffected by these cytokine inhibitors. Thus, C. albicans stimulates IFN-gamma production in an IL-18-, IL-12-, and IL-1beta-dependent manner, whereas production of TNF and IL-8 is independent of these cytokines. Blocking the biologic activities of IL-18, IL-12, and IL-1beta in patients (e.g., for treatment of autoimmune diseases) may result in increased susceptibility to C. albicans infection.[1]

References

The role of endogenous interleukin (IL)-18, IL-12, IL-1beta, and tumor necrosis factor-alpha in the production of interferon-gamma induced by Candida albicans in human whole-blood cultures. Netea, M.G., Stuyt, R.J., Kim, S.H., Van der Meer, J.W., Kullberg, B.J., Dinarello, C.A. J. Infect. Dis. (2002) [Pubmed]

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