alexa IgG marker of optic-spinal multiple sclerosis binds to the aquaporin-4 water channel.
Neurology

Neurology

Journal of Multiple Sclerosis

Author(s): Lennon VA, Kryzer TJ, Pittock SJ, Verkman AS, Hinson SR

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Abstract Neuromyelitis optica (NMO) is an inflammatory demyelinating disease that selectively affects optic nerves and spinal cord. It is considered a severe variant of multiple sclerosis (MS), and frequently is misdiagnosed as MS, but prognosis and optimal treatments differ. A serum immunoglobulin G autoantibody (NMO-IgG) serves as a specific marker for NMO. Here we show that NMO-IgG binds selectively to the aquaporin-4 water channel, a component of the dystroglycan protein complex located in astrocytic foot processes at the blood-brain barrier. NMO may represent the first example of a novel class of autoimmune channelopathy.
This article was published in J Exp Med and referenced in Journal of Multiple Sclerosis

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