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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Dimethyl sulphoxide reduces anti-receptor antibody titres in experimental myasthenia gravis.

The basic abnormality in myasthenia gravis (MG) is a reduction of acetylcholine receptors (AChRs) at neuromuscular junctions, due to an autoimmune attack directed against the receptors. Several lines of evidence support the idea that humoral immune mechanisms play an important part in this process: anti-AChR antibodies are present in the sera of more than 80% of myasthenic patients; the pathogenicity of the antibodies has been demonstrated by passive transfer of IgG from myasthenic patients to mice which reproduces the typical features of MG in the recipient animals; finally, procedures that reduce levels of anti-AChR antibody, such as plasmapheresis, produce improvement in the clinical symptoms of MG. Present treatments of MG depend largely on the prolonged use of immunosuppressive drugs, which have significant drawbacks, for they usually produce only a slow fall in antibody titres, and have toxic side effects. An agent that could produce a rapid and sustained fall of autoantibody titre might have wide application in the treatment of MG and other autoimmune diseases. In the course of testing immunosuppressive drugs for their effect in treating experimental autoimmune MG (EAMG), we discovered that the vehicle used to dissolve some of these agents, dimethyl sulphoxide (DMSO), itself produced a rapid and sustained fall of anti-AChR antibody titre. We now report similar results for a controlled trial of DMSO treatment in rats with EAMG.[1]


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