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J Clin Virol. 2002 Jul;25 Suppl 1:S5-11.

Use of PCR for the diagnosis of herpesvirus infections of the central nervous system.

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  • 1Department of Pediatrics, University of Colorado Health Sciences Center, 4200 East Ninth Avenue, 80262, Denver, CO 80262, USA. roberta.debiasi@uchsc.edu

Abstract

Polymerase chain reaction (PCR) analysis of cerebrospinal fluid (CSF) has revolutionized the diagnosis of nervous system viral infections, particularly those caused by human herpesviruses (HHV). The PCR technique allows the detection of minute quantities of DNA or RNA in body fluids and tissues. Both fresh-frozen and formalin-fixed tissues may be utilized for PCR assays, with the latter making archival studies possible. CSF PCR has now replaced brain biopsy as the gold standard for the diagnosis of herpes simplex virus (HSV) encephalitis. PCR analysis of both CSF and nervous system tissues has also broadened our understanding of the spectrum of disease caused by HSV-1 and -2, cytomegalovirus (CMV), Epstein-Barr virus (EBV), varicella zoster virus (VZV) and HHV-6. PCR results obtained from tissue specimens must be interpreted cautiously, since this highly sensitive technique may detect portions of viral genomic material that may be present even in the absence of active viral infection. Tissue PCR results in particular must be corroborated with clinical and neuropathologic evidence of central nervous system (CNS) infection. In several neurological diseases, negative PCR results have provided evidence against a role for herpesviruses as the causative agents. This review summarizes the role of CSF PCR in the diagnosis and therapeutic management of herpesvirus infections of the nervous system, particularly those caused by HSV and VZV.

PMID:
12091076
[PubMed - indexed for MEDLINE]

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