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J Immunol. 1988 Apr 1;140(7):2210-4.

The 2H4 (CD45R) antigen is selectively decreased in multiple sclerosis lesions.

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Department of Pathology, Massachusetts General Hospital, Boston 02114.


To analyze expression of the 2H4 (CD45R) Ag on inflammatory cells in the central nervous system immune response, immunohistochemical staining with a panel of anti-T cell mAb was performed on central nervous system tissues from 12 patients with multiple sclerosis (MS) and 8 patients with viral encephalitis. Only rare cells were stained with anti-2H4 in MS plaques, plaque edges, and adjacent white matter, whereas 2H4+ cells were more numerous in viral encephalitis (p less than 0.001). By contrast, no quantitative differences were found between MS plaque edges and viral encephalitis with anti-4B4 (helper-inducer function associated), anti-CD4, anti-CD3, and anti-IL-2R mAb, although there were fewer CD8+ cells in MS (p less than 0.01). These data indicate that the 2H4 Ag is selectively decreased and, because it is associated with suppressor-inducer function of CD4+ cells, that there may be a defect in the down-regulation of the in situ immune response in MS.

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