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Platelet-derived growth factor (PDGF) ligand is a potent glial cell mitogen. When its cognate receptor (PDGF-alphaR) is expressed on oligodendroglial lineage cells, such cells are considered capable of division, and the receptor thus serves as a phenotypic marker for oligodendrocyte precursor cells. Here we identify using immunohistochemistry a considerably(More)
Immunohistochemical methods were used to search for Fas receptor/Fas ligand system involvement in multiple sclerosis (MS) white matter brain lesions. We found large numbers of Fas ligand (Fas-L)-bearing cells present in two acute lesions and 12 of 16 chronic MS lesions, and very few positive cells in non-inflammatory controls. Four of six brains from non-MS(More)
The hallmark of the brain pathology in multiple sclerosis is the white matter plaque, characterized by myelin destruction and oligodendrocyte loss. To examine the role that cell death plays in the development of MS lesions, we used the in situ TUNEL technique, a method that sensitively detects DNA fragmentation associated with death at the single cell(More)
Herpes simplex virus (HSV) has veen associated with a variety of inflammatory neurologic disorders. Recently we studied a patient with Guillain-Barré syndrome (GBS) following acute herpes vaginalis infection. Since IgM virus-specific antibody is thought to be a reliable indicator of acute viral infection, we employed a 2-h serologic assay for serum IgM(More)
Counterimmunoelectrophoresis (CIEP) was used to determine precipitating antibodies to Mycoplasma pneumoniae retrospectively in sera from 100 patients with Guillain-Barré syndrome (GBS), 125 medical and neurological controls, and 40 normal individuals. Sera from 7 patients produced precipitin lines. These positive cases included 5 patients with GBS, 1 with(More)
An autopsy study was performed on spinal cords from 18 children who died with HIV-1 infection, using standard histopathologic techniques as well as in situ hybridization and immunocytochemistry for HIV-1. Of 16 spinal cords examined by histology, nine had inflammatory cell infiltrates and six had multinucleated cells; both types of lesion are associated(More)
Cytomegalovirus, measles, and adenovirus antibodies were measured in the sera of 92 Guillain-Barré patients and 120 controls. Thirty patients (33 percent) had markedly elevated levels of complement-fixing antibody to cytomegalovirus and in 21, a fourfold or more alteration in titer was demonstrated. Diagnostic falls in titer were seen in most instances and(More)
Using a new quantitative immunofluorometric procedure, we measured cerebrospinal fluid immunoglobulin G levels in 59 patients and compared the results with values obtained by the most precise currently available method--the immunoprecipitin method of Kabat--and a radial immunodiffusion technique. The absolute immunoglobulin G values determined by the(More)
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