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From the Neurology and Research Services, VA West Los Angeles Medical Center, Wadsworth Division, and Department of Neurology, Reed Neurological Research Center, University of California at Los Angeles School of Medicine (Drs. Shapshak, Tourtellotte, Darvish, Hoffman, Walsh, and Schmid), Los Angeles, CA Division of Clinical Neurology, Institute of Brain Diseases, Tohoku University School of Medicine (Dr. Nakamura), Sendai, Japan; Department of Neurology, Reed Neurological Research Center, University of California at Los Angeles School of Medicine (Drs. Shapshak, Tourtellotte, Graves, Darvish, Walsh, and Schmid), Los Angeles, CA the Molecular Biology Institute, University of California at Los Angeles (Drs. Fareed, Heinzmann, and Sidhu), Los Angeles, CA; Ingene Inc. (Dr. Fareed) Santa Monica, CA; the Departments, of Anesthesiology and Epidemiology, University of Michigan Medical School (Dr. Bedows), Ann Arbor, MI; the National Institutes of Health, Bethesda, MD, and Department of Virology, Weizmann Institute (Dr. Rozenblatt), Rehovot, Israel; the Department of Pathology, Vancouver General Hospital (Dr. Berry), Vancouver, British Columbia, Canada; and the Department of Neurology, Queen's University (Dr. Hawkins), Belfast, UK.
Subacute sclerosing panencephalitis (SSPE) is characterized by a hyperimmune state toward the polypeptides of measles virus except the matrix (M) protein. Using cloned (3H)-labeled complementary DNA probes for in situ hybridization, we found the IM protein and nucleocapsid (NP) protein nucleotide sequences in glial cells and neurons of cryostat sections from two SSPE brains. In one SSPE brain, M protein was lacking, but the other measles polypeptides were present. IgG and IgM antibodies eluted from that brain lacked antibodies to M protein, but antibodies to other measles polypeptides were present. In SSPE brain, the viral M-protein defect is not a deletion of the M gene, but rather a block in gene expression.
Address correspondence and reprint requests to Dr. Shapshak, Neurology Service (W127A), VA Wadsworth Medical Center, Los Angeles, CA 90073.
Supported in part by grants from the Kroc Foundation and Veterans Administration (Merit Review). This project has been funded in part with federal funds from the Department of Health and Human Services under contract no. N01-NS-0-2332.
Accepted for publication February 20, 1985.
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