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Treatment with NAD(+) inhibited experimental autoimmune encephalomyelitis by activating AMPK/SIRT1 signaling pathway and modulating Th1/Th17 immune responses in mice.
International Immunopharmacology 2016 October
Nicotinamide adenine dinucleotide (NAD(+)) plays vital roles in mitochondrial functions, cellular energy metabolism and calcium homeostasis. In this study, we investigated the effect of NAD(+) administration for the treatment of experimental autoimmune encephalomyelitis (EAE) in C57BL/6 mice. EAE, a classical animal model of multiple sclerosis (MS), was induced by subcutaneous injection of myelin oligodendrocyteglycoprotein (MOG). The mice were treated with 250mg/kg (body weight) NAD(+) in PBS administered intraperitoneally once daily. We observed that NAD(+) treatment could lessen the severity of EAE. Additionally, NAD(+) treatment attenuated pathological injuries of EAE mice. We also found that the AMP-activated protein kinase (AMPK)/silent mating-type information regulation 2 homolog 1(SIRT1) pathway was activated in the NAD(+)-treated mice and NAD(+) treatment suppressed pro-inflammatory T cell responses. Our findings demonstrated that NAD(+) could be an effective and promising agent to treat multiple sclerosis and its effects on other autoimmune diseases should be explored.
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