Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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Cryptosporidium hominis Infection Diagnosed by Real-Time PCR-RFLP

  • Cheun, Hyeng-Il (Department of Malaria and Parasitic Diseases, National Institute of Health) ;
  • Kim, Kyungjin (Department of Environmental and Tropical Medicine, Konkuk University, School of Medicine) ;
  • Yoon, Sejoung (Department of Environmental and Tropical Medicine, Konkuk University, School of Medicine) ;
  • Lee, Won-Ja (Department of Malaria and Parasitic Diseases, National Institute of Health) ;
  • Park, Woo-Yoon (Department of Radiation Oncology, College of Medicine, Chungbuk National University) ;
  • Sim, Seobo (Department of Environmental and Tropical Medicine, Konkuk University, School of Medicine) ;
  • Yu, Jae-Ran (Department of Environmental and Tropical Medicine, Konkuk University, School of Medicine)
  • Received : 2013.02.19
  • Accepted : 2013.04.23
  • Published : 2013.06.30
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Abstract

There are approximately 20 known species of the genus Cryptosporidium, and among these, 8 infect immunocompetent or immunocompromised humans. C. hominis and C. parvum most commonly infect humans. Differentiating between them is important for evaluating potential sources of infection. We report here the development of a simple and accurate real-time PCR-based restriction fragment length polymorphism (RFLP) method to distinguish between C. parvum and C. hominis. Using the CP2 gene as the target, we found that both Cryptosporidium species yielded 224 bp products. In the subsequent RFLP method using TaqI, 2 bands (99 and 125 bp) specific to C. hominis were detected. Using this method, we detected C. hominis infection in 1 of 21 patients with diarrhea, suggesting that this method could facilitate the detection of C. hominis infections.

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References

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