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- W2041085582 abstract "HCV-infected “speedball” users (n = 30) were selected from an original cohort of 400 intravenous drug users for cytokine analysis. Cytokine concentrations (TNF-α, IL-1β, IL-6, IFN-γ, IL-2, IL-4, IL-10 and IL-12) were determined in plasma and peripheral blood mononuclear cells (PBMC) cultures derived ex vivo from these patients. In addition, lymphocyte proliferation was measured in 49 HCV-positive “speedball” users. TNF-α, IL-6, IFN-γ, IL-2, IL-4, IL-10, IL-12 cytokines and not IL-1β were significantly increased in plasma from HCV-positive “speedball” users compared with healthy controls. Except for IL-10, all other cytokines measured were augmented in phytohemagglutinin-stimulated PBMC cultures from HCV-positive “speedball” users. Likewise, overproduction of cytokines TNF-α, IL-1β, IL-6 and IFN-γ, was consistently detected when PBMC cultures from HCV-positive “speedball” users were stimulated with a biological response modifier. However, HCV-infected “speedball” users showed significant reduction in lymphoproliferative activity. Compared with healthy subjects, there was a consistent overproduction of both TH1 and TH2 type cytokines in the plasma and PBMC's of HCV-infected “speedball” users. Furthermore, there was a persistent reduction of lymphoproliferative activity in this group. These immunologic abnormalities, coupled with the range of response between the two TH-types in HCV-infected “speedball” users, suggest impairment in the regulatory mechanism of the TH1–TH2 system." @default.
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- W2041085582 date "2006-12-01" @default.
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- W2041085582 title "Impaired cytokine production and suppressed lymphocyte proliferation activity in HCV-infected cocaine and heroin (“speedball”) users" @default.
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- W2041085582 doi "https://doi.org/10.1016/j.drugalcdep.2006.05.013" @default.
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