4.6 Article

Rapid and sensitive detection of human astrovirus in water samples by loop-mediated isothermal amplification with hydroxynaphthol blue dye

期刊

BMC MICROBIOLOGY
卷 14, 期 -, 页码 -

出版社

BIOMED CENTRAL LTD
DOI: 10.1186/1471-2180-14-38

关键词

Astrovirus; Loop-mediated isothermal amplification; Hydroxynaphthol blue

资金

  1. Natural Science Foundation of China [51108029]
  2. Industry Financial Program of MWR [201201032]
  3. Fundamental Research Funds for the Central University [TD2012-03]

向作者/读者索取更多资源

Background: The aim of this paper was to develop a reverse transcription loop-mediated isothermal amplification (RT-LAMP) method for rapid, sensitive and inexpensive detection of astrovirus. Results: The detection limit of LAMP using in vitro RNA transcripts was 3.6x10 copies mu L-1, which is as sensitive as the presently used PCR assays. However, the LAMP products could be identified as different colors with the naked eye following staining with hydroxynaphthol blue dye (HNB). No cross-reactivity with other gastroenteric viruses (rotavirus and norovirus) was observed, indicating the relatively high specificity of LAMP. The RT-LAMP method with HNB was used to effectively detect astrovirus in reclaimed water samples. Conclusions: The LAMP technique described in this study is a cheap, sensitive, specific and rapid method for the detection of astrovirus. The RT-LAMP method can be simply applied for the specific detection of astrovirus and has the potential to be utilized in the field as a screening test.

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