Abstract:
:Bulk-isolated human and bovine oligodendroglia, practically free from myelin, have been used in attempts to elicit an autoimmune response which has been compared with acute experimental allergic encephalomyelitis (EAE). For these experiments, a total of 20 Hartley guinea pigs, 33 Lewis rats and 16 rabbits have been studied. Animals were inoculated with a range of doses of purified preparations of both human and bovine oligodendroglial cells in complete Freund's adjuvant (CFA) and compared with others challenged with whole white matter in CFA. The latter animals all developed clinical and histological signs of experimental allergic encephalomyelitis (EAE) 2-3 weeks post-inoculation. In general, oligodendroglial cells were encephalitogenically less potent than white matter. Guinea pigs were the most susceptible to inoculations of oligodendroglia. In several given human oligodendroglia 14 days earlier, a paraparesis indistinguishable from conventional EAE was seen. Animals receiving bovine cells showed no clinical signs. Histologically, the CNS of afflicted guinea pigs displayed severe inflammation but, in contrast to conventional EAE in the same species, demyelination was rare in the small group of animals tested. After sensitization with oligodendroglia, rats displayed no clinical disease. Histologically, some given human cells had positive evidence of disease while bovine cells in others gave a mild response. Rabbits showed no clinical and very little histological disease. Although more extensive studies are needed to confirm the findings, from the animals studied it appears that (1) variation in response to inocula containing oligodendroglia exists among the species tested, (2) that human oligodendroglia are more potent immunologically than bovine cells, (3) that CNS lesions produced by these cells in guinea pigs, lack a strong demyelinative component and (4) a specific antigen might exist in oligodendrocytes which is distinct from myelin basic protein. The possible reasons underlying our findings are discussed.
journal_name
Brain Resjournal_title
Brain researchauthors
Raine CS,Wiśniewski HM,Iqbal K,Grundkeiqbal I,Norton WTdoi
10.1016/0006-8993(77)90906-4subject
Has Abstractpub_date
1977-01-21 00:00:00pages
269-86issue
2eissn
0006-8993issn
1872-6240pii
0006-8993(77)90906-4journal_volume
120pub_type
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