Use of an internal positive control in a multiplex reverse transcription-PCR to detect west nile virus RNA in mosquito pools

被引:28
作者
Eisler, DL [1 ]
McNabb, A [1 ]
Jorgensen, DR [1 ]
Isaac-Renton, JL [1 ]
机构
[1] British Columbia Ctr Dis Control, Div Lab Serv, Mol Serv Lab, Vancouver, BC V5Z 4R4, Canada
关键词
D O I
10.1128/JCM.42.2.841-843.2004
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
We report on the use of West Nile virus Armored RNA as an internal positive control (IPC) for the extraction and reverse transcription-PCR (RT-PCR) of RNA extracted from field-collected mosquitoes and on a multiplex real-time Taqman RT-PCR to simultaneously detect the 3' noncoding region of West Nile virus and the West Nile virus NS5-2 region comprising the IPC. Mosquito pools from the province of British Columbia, Canada (n = 635), were tested in duplicate and found to be negative for West Nile virus and positive for the IPC. Known West Nile virus-positive supernatants from mosquito pools from the provinces of Alberta and Manitoba were tested in duplicate and found to be positive for both regions of the West Nile virus genome. The mean cycle threshold (Ct) value for the IPC in batch extraction controls +/- 2 standard deviations was found to be 36.43 +/- 1.78 cycles. IPCs of 98.4% (624) of West Nile virus-negative pools fell within this range, indicating the reproducibility of RNA extraction and RT-PCR for pools varying in mosquito genus and number. A comparison of mosquito pool genera revealed no significant genus effect on the Ct value of the IPC. The incorporation of West Nile virus Armored RNA as an IPC allows monitoring of RNA extraction and RT-PCR and detection of false-negative results due to failures in these processes or to PCR inhibition, respectively.
引用
收藏
页码:841 / 843
页数:3
相关论文
共 7 条
[1]   Identification of a Kunjin/West Nile-like flavivirus in brains of patients with New York encephalitis [J].
Briese, T ;
Jia, XY ;
Huang, C ;
Grady, LJ ;
Lipkin, WI .
LANCET, 1999, 354 (9186) :1261-1262
[2]   West Nile virus [J].
Campbell, GL ;
Marfin, AA ;
Lanciotti, RS ;
Gubler, DJ .
LANCET INFECTIOUS DISEASES, 2002, 2 (09) :519-529
[3]  
Hayes C. G., 1989, The arboviruses: epidemiology and ecology. Volume V., P59
[4]   Rapid detection of West Nile virus from human clinical specimens, field-collected mosquitoes, and avian samples by a TaqMan reverse transcriptase-PCR assay [J].
Lanciotti, RS ;
Kerst, AJ ;
Nasci, RS ;
Godsey, MS ;
Mitchell, CJ ;
Savage, HM ;
Komar, N ;
Panella, NA ;
Allen, BC ;
Volpe, KE ;
Davis, BS ;
Roehrig, JT .
JOURNAL OF CLINICAL MICROBIOLOGY, 2000, 38 (11) :4066-4071
[5]  
MOANTH TP, 1996, FIELDS VIROLOGY, P961
[6]   High-throughput detection of west Nile virus RNA [J].
Shi, PY ;
Kauffman, EB ;
Ren, P ;
Felton, A ;
Tai, JH ;
Dupuis, AP ;
Jones, SA ;
Ngo, KA ;
Nicholas, DC ;
Maffei, J ;
Ebel, GD ;
Bernard, KA ;
Kramer, LD .
JOURNAL OF CLINICAL MICROBIOLOGY, 2001, 39 (04) :1264-1271
[7]  
SMITHBURN K. C, 1940, AMER JOUR TROP MED, V20, P471