alexa Experimental allergic encephalomyelitis in the Lewis rat. A model of predictable relapse by cyclophosphamide.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Genetic Syndromes & Gene Therapy

Author(s): Minagawa H, Takenaka A, Itoyama Y, Mori R

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Abstract Relapse of experimental allergic encephalomyelitis (EAE) was achieved in Lewis rats by cyclophosphamide (CY). All rats, immunized with an emulsion of guinea pig spinal cord homogenate in complete Freund's adjuvant and treated with 100 mg/kg of CY 21 days postimmunization (pi), developed moderate to severe paralysis 9-14 days following CY injection. A second relapse was observed in 4 of 11 rats reinjected with CY 49 days pi. Histologically, focal mononuclear cell infiltration with or without demyelination of the white matter of the central nervous system was observed. Cyclophosphamide administration caused transient leukopenia and T-cell defect, the resolution of which coincided with relapse of clinical EAE. Lymphocyte proliferative responses to myelin basic protein (BP) and concanavalin A (Con A) and antibody titers to BP were preserved in CY-treated rats. Adoptive transfer of EAE to naive recipients with Con A-activated spleen cells from donors with CY-induced relapse was unsuccessful.
This article was published in J Neurol Sci and referenced in Journal of Genetic Syndromes & Gene Therapy

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