PMID- 7559960 OWN - NLM STAT- MEDLINE DCOM- 19951122 LR - 20210526 IS - 0095-1137 (Print) IS - 1098-660X (Electronic) IS - 0095-1137 (Linking) VI - 33 IP - 8 DP - 1995 Aug TI - Quantitative PCR for human herpesviruses 6 and 7. PG - 2124-30 AB - A quantitative PCR assay for the detection of human herpesvirus 6 (HHV-6) (variants A and B) and HHV-7 DNAs in clinical samples was developed. The assay uses a nonhomologous internal standard (IS) for each virus that is coamplified with the wild-type target sequence in the same vial and with the same pair of primers. This method allows for a correction of the variability of efficiency of the PCR technique. A standard curve is constructed for each experiment by coamplification of known quantities of the cloned HHV-6 or HHV-7 target templates with the respective IS. Absolute quantitation of the test samples is then achieved by determining the viral target/IS ratio of the hybridization signals of the amplification products and plotting this value against the standard curve. Using this assay, we quantitated the amount of HHV-6 or HHV-7 DNA in infected cell cultures and demonstrated an inhibitory effect of phosphonoformic acid on the replication of HHV-6 and HHV-7 in vitro. As the first clinical application of this procedure, we performed preliminary measurements of the loads of HHV-6 and HHV-7 in lymph nodes from patients with Hodgkin's disease and AIDS. Application of this quantitative PCR method should be helpful for elucidating the pathogenic roles of HHV-6 and HHV-7. FAU - Secchiero, P AU - Secchiero P AD - Laboratory of Tumor Cell Biology, National Cancer Institute, Bethesda, Maryland 20892-4255, USA. FAU - Zella, D AU - Zella D FAU - Crowley, R W AU - Crowley RW FAU - Gallo, R C AU - Gallo RC FAU - Lusso, P AU - Lusso P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Microbiol JT - Journal of clinical microbiology JID - 7505564 RN - 0 (DNA Primers) RN - 0 (DNA, Viral) SB - IM MH - Acquired Immunodeficiency Syndrome/complications/virology MH - Base Sequence MH - CD4-Positive T-Lymphocytes/virology MH - DNA Primers/genetics MH - DNA, Viral/genetics MH - Evaluation Studies as Topic MH - Herpesviridae Infections/complications/diagnosis MH - Herpesvirus 6, Human/*genetics/isolation & purification/pathogenicity MH - Herpesvirus 7, Human/*genetics/isolation & purification/pathogenicity MH - Hodgkin Disease/complications/virology MH - Humans MH - Molecular Sequence Data MH - Polymerase Chain Reaction/*methods/standards MH - Reference Standards PMC - PMC228347 EDAT- 1995/08/01 00:00 MHDA- 1995/08/01 00:01 PMCR- 1995/08/01 CRDT- 1995/08/01 00:00 PHST- 1995/08/01 00:00 [pubmed] PHST- 1995/08/01 00:01 [medline] PHST- 1995/08/01 00:00 [entrez] PHST- 1995/08/01 00:00 [pmc-release] AID - 10.1128/jcm.33.8.2124-2130.1995 [doi] PST - ppublish SO - J Clin Microbiol. 1995 Aug;33(8):2124-30. doi: 10.1128/jcm.33.8.2124-2130.1995.