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  • Title: Dysregulation of proinflammatory and regulatory cytokines in HIV infected persons with active tuberculosis.
    Author: Bal AM, Lakhashe SK, Thakar MR, Tripathy SP, Paranjape RS.
    Journal: Cytokine; 2005 Jun 07; 30(5):275-81. PubMed ID: 15927853.
    Abstract:
    Proinflammatory and regulatory cytokines have been implicated to play important role in immunopathology of HIV and tuberculosis (TB) infection. Capacity of unstimulated and mitogen-stimulated peripheral blood mononuclear cells (PBMCs) to secrete cytokines (interleukin (IL)-2, interferon-gamma (IFN-gamma), tumor necrosis factor-alpha (TNF-alpha), IL-4, IL-10 and IL-6) was estimated for 15 HIV-TB coinfected patients, 22 HIV seropositives without TB, 32 HIV negative TB patients, and 36 healthy subjects. Dually infected patients had suppression of both Th1 and Th2 cytokine secretion as evidenced by significantly lower production of IL-2, IFN-gamma and TNF-alpha as well as IL-4 and IL-10. Production of IL-2 and TNF-alpha was significantly decreased only in case of HIV infection. Significantly higher IL-6 secretion was found in unstimulated cultures in dually infected patients. The mitogen induced cytokine secretion was generally lower in HIV-TB coinfected patients indicating profound perturbation of both Th1 and Th2 responses.
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