Exercise intensity-dependent immunomodulatory effects on encephalomyelitis
Abstract
Exercise training (ET) has beneficial effects on multiple sclerosis and its animal model experimental autoimmune encephalomyelitis (EAE). However, the intensity-dependent effects of ET on the systemic immune system in EAE remain undefined. (1) To compare the systemic immune modulatory effects of moderate versus high-intensity ET protocols in protecting against development of EAE; (2) To investigate whether ET affects autoimmunity selectively, or causes general immunosuppression. Healthy mice performed moderate or high-intensity treadmill running programs. Proteolipid protein (PLP)-induced transfer EAE was utilized to examine ET effects specifically on the systemic immune system. Lymph node (LN)-T cells from trained versus sedentary donor mice were transferred to naïve recipients and EAE severity was assessed, by clinical assessment and histopathological analysis. LN-T cells derived from donor trained versus sedentary PLP-immunized mice were analyzed in vitro for proliferation assays by flow cytometry analysis and cytokine and chemokine receptor gene expression using real-time PCR. T cell-dependent immune responses of trained versus sedentary mice to the nonautoantigen ovalbumin and susceptibility to Escherichia coli-induced acu...Continue Reading
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