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2020 ; 129
(ä): 104446
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Evaluation of rapid diagnosis of novel coronavirus disease (COVID-19) using
loop-mediated isothermal amplification
#MMPMID32512376
Kitagawa Y
; Orihara Y
; Kawamura R
; Imai K
; Sakai J
; Tarumoto N
; Matsuoka M
; Takeuchi S
; Maesaki S
; Maeda T
J Clin Virol
2020[Aug]; 129
(ä): 104446
PMID32512376
show ga
With the rapid spread of severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2), there is an urgent need for more rapid and simple detection
technologies at the forefront of medical care worldwide. In this study, we
evaluated the effectiveness of the Loopamp® 2019-SARSCoV-2 Detection Reagent Kit,
which uses loop-mediated isothermal amplification (LAMP) technology. In this
protocol, cDNA is synthesized from SARS-CoV-2 RNA using reverse transcriptase,
followed by DNA amplification under isothermal conditions in one step. The
RT-LAMP test kit amplified the targeted RNA of a SARS-CoV-2 isolate with a
detection limit of 1.0 × 101 copies/?L, which was comparable to the detection
sensitivity of quantitative reverse transcription PCR (RT-qPCR). Comparison with
the results of RT-qPCR for 76 nasopharyngeal swab samples from patients with
suspected COVID-19 showed a sensitivity of 100 % and a specificity of 97.6 %. In
the 24 RNA specimens derived from febrile Japanese patients with or without
influenza A, no amplification was observed using RT-LAMP. RT-LAMP could be a
simple and easy-to-use diagnostic tool for the detection of SARS-CoV-2.