Cytokine-induced interleukin-8 production is depressed in chronic as opposed to acute human immunodeficiency virus 1 infection of promonocytic cells.
2000
: Spontaneous secretion of interleukin 8 (IL-8) was higher in latently infected U1 cells than in acutely infected or uninfected parental U937 cells. However, the induction of IL-8 by various cytokines (IL-1 alpha, TNF-alpha, IL-6, TNF-beta, GM-CSF, IFN-gamma) was significantly reduced in U1 cells. Cytokine modulation of IL-8 production in U937 cells acutely infected with a T cell-tropic strain (IIIB) or monocytotropic strain (ADA) of human immunodeficiency virus 1 (HIV-1) (HIV-1IIIB and HIV-1ADA) was variable and showed strain-specific differences. The obtained results showed that the in vitro induction of IL-8 is impaired in promonocytic cells latently infected with HIV-1 and is differently modulated under acute conditions of infection depending on the IL-8 inducing cytokine and on the infecting virus strain.
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