title: Progressive multifocal leukoencephalopathy and retroviral encephalitis in acquired immunodeficiency syndrome.
abstract: Antigens of human polyomaviruses, the etiologic agents of progressive multifocal leukoencephalopathy (PML), and of human immunodeficiency virus were localized in paraffin sections from brains of six patients who died with the acquired immunodeficiency syndrome. Immunostaining revealed polyomaviral antigens in oligodendrocytes and in some astrocytes. Human immunodeficiency (retro) virus antigens were immunostained in mononuclear macrophages, glial cells, and vascular endothelial cells. Both viral types were found ultrastructurally. The lesions of PML were more destructive than is usually seen in cases without the acquired immunodeficiency syndrome. The retroviral encephalitis could have occurred before the onset of PML. However, a secondary retroviral encephalitis could have resulted if the monocytes responding to an initial polyomaviral lesion were already infected with human immunodeficiency virus before they differentiated into macrophages.
authors.affiliation: Department of Pathology, Los Angeles County-University of Southern California Medical Center 90033-1084.
authors.forename: R H
authors.initials: RH
authors.lastname: Rhodes
authors.forename: J M
authors.initials: JM
authors.lastname: Ward
authors.forename: D L
authors.initials: DL
authors.lastname: Walker
authors.forename: A A
authors.initials: AA
authors.lastname: Ross
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000150:complications*; D000328:Adult; D000956:Antigens, Viral / Q000032:analysis; D001253:Astrocytes / Q000382:microbiology / Q000648:ultrastructure; D001921:Brain / Q000382:microbiology / Q000648:ultrastructure; D004660:Encephalitis / Q000209:etiology* / Q000473:pathology; D015488:HIV Antigens / Q000032:analysis; D006716:Homosexuality; D006801:Humans; D007124:Immunoenzyme Techniques; D007150:Immunohistochemistry; D007968:Leukoencephalopathy, Progressive Multifocal / Q000150:complications* / Q000473:pathology; D008297:Male; D008854:Microscopy, Electron; D009836:Oligodendroglia / Q000382:microbiology / Q000648:ultrastructure; D011120:Polyomavirus / Q000276:immunology; D014412:Tumor Virus Infections / Q000150:complications* / Q000473:pathology
chemical_list: D000956:Antigens, Viral; D015488:HIV Antigens