Document 0592 DOCN M9440592 TI Presence of papova-like viral particles in cerebrospinal fluid of AIDS patients with progressive multifocal leukoencephalopathy. An additional test for in vivo diagnosis. DT 9404 AU Orefice G; Campanella G; Cicciarello S; Chirianni A; Borgia G; Rubino S; Mainolfi M; Coppola M; Piazza M; Second Department of Neurology, Medical School, Federico II; University, Naples, Italy. SO Acta Neurol (Napoli). 1993 Oct;15(5):328-32. Unique Identifier : AIDSLINE MED/94136187 AB An in vivo diagnosis of progressive multifocal leukoencephalopathy (PML), a neurological opportunistic viral infection in AIDS patients, can be made only by brain biopsy. In order to identify viral particles, we examined the cerebrospinal fluid (CSF) of 15 AIDS patients with focal neurological signs by electron microscopy using negative staining technique. In 2 out of 3 patients with clinical and neuroradiological presumptive diagnosis of PML, the CSF examination revealed papova-like viral particles. Our results support the hypothesis that the severe cell-mediated immunodeficiency reactivates papovavirus from a latent state in the brain, leading to PML. Therefore, the CSF study by negative staining might be a useful test for an in vivo diagnosis of PML. DE Acquired Immunodeficiency Syndrome/*CEREBROSPINAL FLUID/ COMPLICATIONS Brain/MICROBIOLOGY/RADIOGRAPHY Cerebrospinal Fluid/*MICROBIOLOGY Comorbidity Female Human Immunosuppression Leukoencephalopathy, Progressive Multifocal/COMPLICATIONS/ *DIAGNOSIS/MICROBIOLOGY Male Microscopy, Electron Papovaviridae/*ISOLATION & PURIF Tomography, X-Ray Computed JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).