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  • Title: Chronic relapsing necrotizing encephalomyelitis produced by myelin basic protein in mice.
    Author: Moore GR, McCarron RM, McFarlin DE, Raine CS.
    Journal: Lab Invest; 1987 Aug; 57(2):157-67. PubMed ID: 2441138.
    Abstract:
    Chronic relapsing experimental autoimmune encephalomyelitis is commonly seen in a number of species after a single injection of whole white matter in adjuvant but not after inoculation with myelin basic protein, the major encephalitogen of central myelin. In the present report on large groups of SJL mice, we describe a form of chronic relapsing experimental autoimmune encephalomyelitis with destructive lesions after a single inoculation of myelin basic protein in complete Freund's adjuvant. This condition was studied for up to 19 months postinoculation and was characterized by a relapsing-remitting or a chronic progressive course, usually with a prolonged latent period. Higher doses of 400 and 800 micrograms of myelin basic protein were more effective in inducing this condition than were lower doses of 100 and 200 micrograms. Large lesions were apparent in the white matter. These comprised widespread destruction and Wallerian degeneration with some demyelination towards the margins. Demyelination was an initial, albeit transient, event which was subsequently masked by nerve fiber destruction. Polymorphonuclear leukocytes were early and prominent components of the inflammatory infiltrate and together with macrophages appeared to be involved in the lysis of myelin and axons. Thus, despite the clinical similarities, these features contrast the model with the more purely demyelinative lesions of chronic relapsing experimental autoimmune encephalomyelitis in other species and multiple sclerosis in man.
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