期刊
FOOD CONTROL
卷 41, 期 -, 页码 91-95出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodcont.2014.01.005
关键词
Vibrio parahaemolyticus; Real-time LAMP; ESE Quant tube scanner; API 20E system; Real-time PCR
资金
- Major State Basic Research Development Program of China (973 Program) [2010CB35704, 2012CB723705]
- Xiamen Science and Technology Major Project [3502Z20110001]
- Guangzhou technological planning projects [11C12080718]
We evaluated the usefulness of the loop-mediated isothermal amplification (LAMP) using a portable ESE Quant tube scanner as a rapid and simple method for the detection of Vibrio parahaemolyticus, an important pathogen causing seafood-borne gastroenteritis. The real time LAMP (RT-LAMP) assay using a hemolysin gene (tlh/ldh)-specific primers was verified using V. parahaemolyticus strains (n = 91) from different countries and other non-target strains to check the utility of this method. Both the sensitivity and specificity of the RT-LAMP using 3 pairs of tlh/ldh-specific primers developed in this study were excellent (100%). The detection limit of the RT-LAMP was as low as 7 Colony forming unit per reaction and detection time was only 20 min. Comparative evaluation of the target bacterial strains with the RT-LAMP using ESE Quant tube scanner, API 20E system and conventional RT-PCR method revealed that the RI-LAMP assay developed in this study is simpler and more rapid than the latter two methods. Therefore, the RI-LAMP method using the easily portable ESE Quant tube scanner can be considered as an effective tool for the rapid screening of V parahaemolyticus strains in environmental and clinical samples, especially, in remote areas of developing countries during epidemic periods. (C) 2014 Elsevier Ltd. All rights reserved.
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