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  • Title: Chronic relapsing experimental allergic encephalomyelitis in the Lewis rat: studies on immune regulation.
    Author: Chow LH, Feurer C, Borel JF.
    Journal: J Neuroimmunol; 1988 Oct; 19(4):329-38. PubMed ID: 3049665.
    Abstract:
    To study immunoregulation of chronic relapsing experimental allergic encephalomyelitis (CR-EAE) in Lewis rats, we adoptively transferred concanavalin A-activated lymph node cells (LNC) or splenocytes, from hind footpad-inoculated donors at the onset (day 11), or recovery (day 16), of the first attack. Popliteal LNC, especially from day 16 donors, provided significant and dose-dependent, but incomplete, protection of recipients from encephalitogenic challenge; maximal mean delay in EAE onset was 10 days later than controls, with subsequent paralysis reduced more than 6-fold. In contrast, particularly from day 11 donors, superficial inguinal LNC recipients developed actively induced disease of normal severity up to 4 days earlier than CR-EAE controls. Furthermore day 11 EAE splenocytes, but not day 16 ones, adoptively transferred disease into 50-88% of naive recipients. In separate studies, we demonstrated unresponsiveness to active induction of disease in all rats re-challenged during stable late remission, as well as in a minority of animals pretreated with antigen in incomplete Freund's adjuvant. These results suggest an organ-dependent and time-dependent balance between effector and suppressor populations in the model.
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