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  • Title: Decreased CNS inflammation and absence of clinical exacerbation of disease after six months oral administration of bovine myelin in diseased SJL/J mice with chronic relapsing experimental autoimmune encephalomyelitis.
    Author: al-Sabbagh AM, Goad EP, Weiner HL, Nelson PA.
    Journal: J Neurosci Res; 1996 Aug 15; 45(4):424-9. PubMed ID: 8872902.
    Abstract:
    Murine chronic relapsing experimental autoimmune encephalomyelitis (CR-EAE) is a model of inflammatory demyelinating disease of the central nervous system (CNS) with similarity to multiple sclerosis (MS) in humans. Mice with confirmed neurologic deficits from CR-EAE were treated by oral administration of whole bovine myelin to investigate the effect of long-term oral delivery of myelin antigens on clinical disease and on the inflammatory response in the CNS. EAE-positive mice were fed doses of 1 mg, 10 mg, or 20 mg of bovine myelin every other day for 6 months. We found that prolonged oral delivery of neuroantigen suppressed inflammatory and demyelination foci in the CNS of myelin-treated mice with no exacerbation of clinical disease status compared with the control group. Analysis of histologic sections of brain and spinal cords with hematoxylin-eosin (H&E) and Luxol fast blue (LFB) staining showed a decrease in the inflammatory cell infiltration and active centers of demyelination, respectively. Furthermore, after 6 months of treatment, there was no increased sensitization to myelin antigens seen, as measured by antimyelin basic protein (MBP) or anti-proteolipid apoprotein (PLP) antibodies. These results demonstrate that prolonged oral administration of myelin antigens in diseased animals has an ameliorating effect on the pathologic process and supports its potential long-term use in humans with MS.
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