Parasites, Hosts and Diseases

  • 제51권2호
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  • Pages.237-241
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  • 2013
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  • 2982-5164(pISSN)
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  • 1738-0006(eISSN)
대한기생충학·열대의학회 (The Korea Society for Parasitology and Tropical Medicine)
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Sensitive and Rapid Detection of Giardia lamblia Infection in Pet Dogs using Loop-Mediated Isothermal Amplification

  • Li, Jie (College of Veterinary Medicine, South China Agricultural University) ;
  • Wang, Peiyuan (College of Veterinary Medicine, South China Agricultural University) ;
  • Zhang, Aiguo (College of Veterinary Medicine, South China Agricultural University) ;
  • Zhang, Ping (College of Veterinary Medicine, South China Agricultural University) ;
  • Alsarakibi, Muhamd (College of Veterinary Medicine, South China Agricultural University) ;
  • Li, Guoqing (College of Veterinary Medicine, South China Agricultural University)
  • 투고 : 2012.09.27
  • 심사 : 2013.01.10
  • 발행 : 2013.04.30
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초록

Giardia lamblia is recognized as one of the most prevalent parasites in dogs. The present study aimed to establish a loop-mediated isothermal amplification (LAMP) assay for rapid and specific detection of G. lamblia from dogs. The fecal samples were collected and prepared for microscopic analysis, and then the genomic DNA was extracted directly from purified cysts. The concentration of DNA samples of G. lamblia were diluted by 10-fold serially ranging from $10^{-1}$ to $10^{-5}ng/{\mu}l$ for LAMP and PCR assays. The LAMP assay allows the amplification to be finished within 60 min under isothermal conditions of $63^{\circ}C$ by employing 6 oligonucleotide primers designed based on G. lamblia elongation factor 1 alpha ($EF1{\alpha}$) gene sequence. Our tests showed that the specific amplification products were obtained only with G. lamblia, while no amplification products were detected with DNA of other related protozoans. Sensitivity evaluation indicated that the LAMP assay was sensitive 10 times more than PCR. It is concluded that LAMP is a rapid, highly sensitive and specific DNA amplification technique for detection of G. lamblia, which has implications for effective control and prevention of giardiasis.

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참고문헌

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