Thelper1 and T helper2 cytokine production patterns in stressed beta2-adrenergic receptor-deficient mice during chlamydia genital infection.
Murine CD4+ T cells have two distinct cytokine secretion patterns to play different functions. We have demonstrated that cold-induced stress (CIS) suppresses the immune system leading to increased intensity of Chlamydia muridaum in mice. We have reported that beta2-adrenergic receptor (b2-AR) knockout (KO) mice resist chlamydia genital infection. However, the cytokine profile of CD4+ T cells is not well explored. This study aimed to determine the cytokine production of Th1 and Th2 types in stressed and non-stressed b2-AR KO mice. We investigated the cytokine production levels of stressed and non-stressed mice during C. muridarum genital infection. Significantly increased production of cytokines was observed in plates pre-coated with anti-CD3/CD28 or in the presence of Con A or LPS. A decrease in the production of IFN-g and IL-2, whereas an increase in the secretion of IL-10, IL-13, and IL-23 in CD4+ T cells of stressed wild-type mice was obtained; however, the secretion of IFN-g and IL-2 was restored in T cells of b2-AR KO mice. Moreover, in vitro proliferation of CD4 T cells in the presence of b2-AR antagonists, ICI 118, 551 stimulated the production of Th1 cytokines, whereas b2-AR agonist, Fenoterol, decreased the production of Th1-type cytokines. Overall, Th1 cytokine responses are reduced in stressed mice suggesting that the cytokine status was polarized toward a Th2 immune response that can be restored by removing b2-AR from immune cells.
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