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Original Article

Oral Administration of Type I Interferon Modulates the Course of Experimental Allergic Neuritis

, , , &
Pages 157-165 | Received 19 Apr 1996, Accepted 10 Jul 1996, Published online: 07 Jul 2009
 

Abstract

We investigated the effect of oral administration of type I interferon (IFN) in experimental allergic neuritis (EAN) in Lewis rats immunized with bovine peripheral nerve myelin. Starting at 7 days preceding immunization, rats were fed daily until sacrifice either with 5000 U rat IFN-α/β or mock-IFN. The clinical severity of EAN was significantly reduced in IFN-α/β fed animals compared to mock-IFN fed controls. Demyelination, but not inflammation, was decreased in IFN-α/β fed compared to mock-IFN fed rats at day 20 after immunization. In situ IFN-γ production and inflammation were reduced when evaluated by immunocytochemistry at day 13 after immunization. Spleen cells from IFN-α/β fed compared to mock-IFN fed EAN rats showed significantly reduced proliferation to stimulation with Con A or peripheral nerve myelin. IFN-γ production in draining lymph node cells was significantly reduced after stimulation with bovine peripheral nerve myelin. Our data suggest that oral administration of IFN-α/β reduces the severity of EAN, possibly by a reduction in production.

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