Oligoclonal Bands Staining for IgG, IgA, IgM, Kappa Lambda Light Chains in Cerebrospinal Fluid of Patients with Multiple Sclerosis

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Abstract
We investigated the oligoclonal bands (OB) in CSF of patients with multiple sclerosis (MS), Guillain-Barre syndrome (GBS) and aseptic meningitis (AS) using polyacryamide or agarose isoelectric focusing following electroblotting and immunostaining for IgG, IgA, IgM and light chains. OB staining for IgG was detected in 80% of patients with MS, 25% with GBS and 13% with AS. OB staining for IgA and IgM was not detected in any disease. In MS, OB were stained only for the kappa or lambda light chains, which was compatible with OB staining for IgG. These results suggest that in MS, OB are monoclonal because they can be stained for gamma heavy chains and for only one light chains.

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