The distribution of Ia antigen in the lesions of rat acute experimental allergic encephalomyelitis - PubMed (original) (raw)

The distribution of Ia antigen in the lesions of rat acute experimental allergic encephalomyelitis

K Vass et al. Acta Neuropathol. 1986.

Abstract

Ia antigen, encoded within the major histocompatibility complex, plays an important role in the activation of T lymphocytes. Since experimental allergic encephalitis is an essentially T cell-mediated disease, Ia antigen in the central nervous system (CNS) may be pathogenetically relevant. The occurrence of Ia antigen in the CNS of normal rats and of rats with experimental allergic encephalitis was studied by light and electron microscope immunocytochemistry using the monoclonal anti-Ia antibodies Ox 4 and Ox 6. In normal, unsensitized animals a district population of stellate cells in the meninges and some perivascular mononuclear cells in the nervous tissue carried Ia antigen. In rats with experimental allergic encephalitis a dramatic increase of Ia-positive cells was found. In addition to the positive cells found in normal animals, monocytes, macrophages and many lymphocytes in the meningeal perivascular and parenchymal inflammatory infiltrates as well as "activated microglia" stained for Ia antigen. We did not find evidence for Ia expression on endothelial cells, astrocytes or other components of the CNS in either normal or diseased rats.

PubMed Disclaimer

Similar articles

Cited by

References

    1. Nature. 1984 Mar 22-28;308(5957):373-5 - PubMed
    1. J Immunol. 1985 Apr;134(4):2333-7 - PubMed
    1. Immunology. 1981 Dec;44(4):727-36 - PubMed
    1. Immunology. 1982 Jan;45(1):97-103 - PubMed
    1. J Immunol. 1951 Apr;66(4):421-44 - PubMed

MeSH terms

Substances