title: [Detection and subgrouping of respiratory syncytial virus RNA by real-time RT-PCR].
abstract: The TaqMan-based quantitative real-time RT-PCR assay we developed uses specific probes to identify respiratory syncytial virus (RSV) and to distinguish RSV subgroups A (RSV-A) and B (RSV-B). We selected conserved regions of the F gene as assay targets and designed new primers and TaqMan MGB probes to detect RSV-A and B. RSV-A and B control plasmids confirmed real-time reverse transcription polymerase chain reaction (RT-PCR) reactivity whose efficiency was 2.5 x 10(1) to 2.5 x 10(7) copies/tube. The assay detection limit was 10 to 10(2) times higher than that of the conventional RT-PCR assay and was equal to the nested PCR assay. No cross-reactions occurred against other respiratory viruses, including influenza virus, metapneumovirus, measles virus, coxsackievirus, enterovirus, echovirus, mumps virus, parainfluenza virus, and rhinovirus. Of 154 clinical specimens derived from subjects with acute respiratory infection and tested by using both real-time RT-PCR and nested PCR, 40 were RSV-positive in both assays. Of these, 25 were identified as RSV-A and 15 as RSV-B by both assays. There was 100% concordance in RSV subgroup identification between real-time RT-PCR and nested PCR assays. These results indicate that our real-time RT-PCR assay can be used for rapid detection, quantitative analysis and subgrouping of RSV-A and RSV-B.
authors.affiliation: Chiba City Institute of Health and Environment.
authors.forename: Hajime
authors.initials: H
authors.lastname: Yokoi
authors.forename: Toshimitsu
authors.initials: T
authors.lastname: Tanaka
authors.forename: Ayano
authors.initials: A
authors.lastname: Mizumura
authors.forename: Tomoko
authors.initials: T
authors.lastname: Kitahashi
mesh_terms: D006801:Humans; D016133:Polymerase Chain Reaction; D012367:RNA, Viral / Q000145:classification / Q000302:isolation & purification*; D060888:Real-Time Polymerase Chain Reaction; D018357:Respiratory Syncytial Virus Infections / Q000821:virology; D018113:Respiratory Syncytial Virus, Human / Q000235:genetics*; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000379:methods*
chemical_list: D012367:RNA, Viral