Abstract
Experimental autoimmune neuritis (EAN) is a T cell-mediated autoimmune inflammatory demyelinating disease of the peripheral nervous system and an animal model of human inflammatory demyelinating polyradiculoneuropathy. AUY954, which targets selectively the sphingosine-1-phosphate receptor 1 (S1P 1), is known to sequester lymphocytes into secondary lymphoid tissues. In EAN rats, AUY954 greatly prevented paraparesis if administrated from the day of immunization. T cell, B cell, and macrophage infiltration, inflammatory demyelination, and local expression of interleukine-17 and matrix metalloproteinase-9 in sciatic nerves of EAN rats were significantly decreased by AUY954 treatment. Therefore, S1P 1 modulation might be a potential treatment option for inflammatory neuropathies.
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