Development of the loop-mediated isothermal amplification method for rapid detection of cytomegalovirus DNA

Ryota Suzuki, Tetsushi Yoshikawa, Masaru Ihira, Yoshihiko Enomoto, Shoji Inagaki, Koichi Matsumoto, Koji Kato, Kazuko Kudo, Seiji Kojima, Yoshizo Asano

Research output: Contribution to journalArticle

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Abstract

Cytomegalovirus (CMV) loop-mediated isothermal amplification (LAMP) was performed on DNA extracted from CMV (AD-169)-, herpes simplex virus (HSV) 1 (KOS)-, HSV-2 (186)-, varicella-zoster virus (Oka-vaccine)-, human herpesvirus (HHV)-6 A (U1102)-, HHV-6 B (Z29)-, and HHV-7 (RK)-infected cells. Although amplified CMV demonstrated typical ladder patterns, no LAMP product was detected in reactions performed with other viral DNAs. The sensitivity of the CMV LAMP was 500 copies/tube, as determined by either agarose gel electrophoresis or turbidity assay. To determine whether CMV LAMP could be used for quantitative analysis of viral DNA, threshold times, defined as the time (in seconds) to reach the threshold level (0.1), were measured by amplification of serial dilutions of the plasmid DNA. The standard curve exhibited a correlation coefficient of 0.944, a slope of -208.1, and a y-intercept of 3261.4. Following these initial validation experiments, we analyzed 180 samples collected serially from 20 pediatric hematopoietic stem cell transplant recipients. Detection of CMV DNA in whole blood (WB) was tested by CMV LAMP and real-time polymerase chain reaction (PCR). When >500 copies/tube (>5000 copies/200 μl of WB) was defined as positive for CMV infection, the sensitivity, specificity, positive predictive value, and negative predictive values of the CMV LAMP were 80.0, 98.9, 66.7, and 99.4%, respectively.

Original languageEnglish
Pages (from-to)216-221
Number of pages6
JournalJournal of Virological Methods
Volume132
Issue number1-2
DOIs
Publication statusPublished - Mar 1 2006
Externally publishedYes

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Cytomegalovirus
DNA
Human Herpesvirus 6
Viral DNA
Human Herpesvirus 7
Cercopithecine Herpesvirus 1
Human Herpesvirus 3
Human Herpesvirus 2
Agar Gel Electrophoresis
Cytomegalovirus Infections
Human Herpesvirus 1
Hematopoietic Stem Cells
Real-Time Polymerase Chain Reaction
Plasmids
Vaccines
Pediatrics
Transplants
Sensitivity and Specificity

All Science Journal Classification (ASJC) codes

  • Virology

Cite this

Suzuki, R., Yoshikawa, T., Ihira, M., Enomoto, Y., Inagaki, S., Matsumoto, K., ... Asano, Y. (2006). Development of the loop-mediated isothermal amplification method for rapid detection of cytomegalovirus DNA. Journal of Virological Methods, 132(1-2), 216-221. https://doi.org/10.1016/j.jviromet.2005.09.008

Development of the loop-mediated isothermal amplification method for rapid detection of cytomegalovirus DNA. / Suzuki, Ryota; Yoshikawa, Tetsushi; Ihira, Masaru; Enomoto, Yoshihiko; Inagaki, Shoji; Matsumoto, Koichi; Kato, Koji; Kudo, Kazuko; Kojima, Seiji; Asano, Yoshizo.

In: Journal of Virological Methods, Vol. 132, No. 1-2, 01.03.2006, p. 216-221.

Research output: Contribution to journalArticle

Suzuki, R, Yoshikawa, T, Ihira, M, Enomoto, Y, Inagaki, S, Matsumoto, K, Kato, K, Kudo, K, Kojima, S & Asano, Y 2006, 'Development of the loop-mediated isothermal amplification method for rapid detection of cytomegalovirus DNA', Journal of Virological Methods, vol. 132, no. 1-2, pp. 216-221. https://doi.org/10.1016/j.jviromet.2005.09.008
Suzuki, Ryota ; Yoshikawa, Tetsushi ; Ihira, Masaru ; Enomoto, Yoshihiko ; Inagaki, Shoji ; Matsumoto, Koichi ; Kato, Koji ; Kudo, Kazuko ; Kojima, Seiji ; Asano, Yoshizo. / Development of the loop-mediated isothermal amplification method for rapid detection of cytomegalovirus DNA. In: Journal of Virological Methods. 2006 ; Vol. 132, No. 1-2. pp. 216-221.
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AU - Matsumoto, Koichi

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