Infection with HIV is associated with elevated IL-6 levels and production
- PMID: 2295799
Infection with HIV is associated with elevated IL-6 levels and production
Abstract
Polyclonal B cell activation is commonly observed in AIDS and in infection with HIV. Because IL-6 (B cell stimulatory factor 2) plays an essential role in the differentiation of activated B cells to Ig-secreting cells, and because IL-6 production is induced by exposure of human PBMC to HIV, we measured the level of circulating plasma IL-6, spontaneously-produced IL-6, and IL-6 mRNA in HIV-infected donors and in healthy control donors. Elevated levels of plasma IL-6 and IL-6 mRNA were detected in HIV-infected donors. PBMC isolated from the peripheral circulation of HIV-infected donors, and cultured without added exogenous activators of IL-6 production, produced markedly elevated amounts of IL-6 when compared with cells isolated from healthy donors. Interestingly, levels of an acute-phase protein, which is known to be induced by IL-6, was also increased in HIV-infected donors. These results demonstrate that elevated levels of IL-6 are associated with HIV-infection, and suggest that IL-6 over-production may contribute to the polyclonal B cell activation seen in AIDS and HIV infection.
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