Document 3007 DOCN M94A3007 TI EBV type A and B association with primary CNS lymphomas. DT 9412 AU Ciardi M; Del Re V; Toma L; Fedele CG; Cirelli A; Sorice F; Dept. Infectious Diseases, La Sapienza University, Rome, Italy. SO Int Conf AIDS. 1994 Aug 7-12;10(1):175 (abstract no. PB0125). Unique Identifier : AIDSLINE ICA10/94369568 AB OBJECTIVE: Epstein-Barr virus (EBV) is often associated with HIV infection and seems to play a pathogenic role on AIDS-related primary lymphomas of the central nervous system (CNS); in fact EBV virus has been detected in both brain tissue by in situ hybriditation and cerebrospinal fluid (CSF) by polymerase chain reaction (PCR) in HIV patients affected by primary CNS limphoma. It has been shown that there are two EBV strains, type A and B, but until now neither type seems to have a specific disease association. METHODS: We performed PCR to detect type A and B EBV-DNA using different sets of specific primers on CSFs of five AIDS patients with primary CNS lymphoma. We tested previously these CSFs for EBV-DNA by a nested PCR using other primers. RESULTS: All 5 patients affected by primary CNS lymphoma were positive for EBV-DNA; four out of 5 showed positivity for type A EBV-DNA and 1 for type B. DISCUSSION AND CONCLUSIONS: We noted a high prevalence of type A EBV-DNA in primary CNS limphomas; that could be due to geographical distribution but we think that there is a possibility that type A EBV could be more strictly associated with primary CNS limphomas than type B. Further studies will be required to establish if there is a difference of prevalence between type A and B EBV in other lymphoproliferative diseases in HIV patients. DE Brain/MICROBIOLOGY Brain Neoplasms/*MICROBIOLOGY DNA, Viral/*GENETICS Herpesvirus 4, Human/CLASSIFICATION/*GENETICS Human Lymphoma, AIDS-Related/*MICROBIOLOGY Polymerase Chain Reaction/METHODS Tumor Virus Infections/*MICROBIOLOGY MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).