| Autor: |
Gomez-Flores, R, Tucker, S D, Kansal, R, Tamez-Guerra, R, Mehta, R T |
| Zdroj: |
Journal of Antimicrobial Chemotherapy (JAC); 1997, Vol. 39 Issue 2, p189-197, 9p |
| Abstrakt: |
The effects of interferon-gamma (IFN-gamma) and tumour necrosis factor-alpha (TNF-alpha) alone or in combination with free or liposomal clofazimine against Mycobacterium avium-Mycobacterium intracellulare complex (MAC) were investigated. Treatment of murine resident peritoneal macrophages with 50 U/mL IFN-gamma (pre-infection) or 30 U/mL TNF-alpha (post-infection), caused significant reduction in intracellular MAC growth; this response was suppressed by anti-TNF-alpha antibodies or pentoxifylline. Activation of macrophages with IFN-gamma or TNF-alpha enhanced the intracellular activities of free and liposomal clofazimine against MAC; the individual antimycobacterial activities of free and liposomal clofazimine, however, were comparable. In the beige mouse model, IFN-gamma was ineffective, while liposomal clofazimine significantly decreased the infection in liver and spleen; the use of N(G)-monomethyl-L-arginine, a nitric oxide inhibitor, enhanced the effect of IFN-gamma against MAC infection. In addition, treatment of infected mice with either IFN-gamma or liposomal clofazimine significantly reduced the infection in peritoneal macrophages. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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