Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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A Case of Diphyllobothrium nihonkaiense Infection as Confirmed by Mitochondrial COX1 Gene Sequence Analysis

  • Park, Sang Hyun (Department of Internal Medicine, Chuncheon Sacred Heart Hospital, Department of Parasitology, School of Medicine, Chungbuk National University) ;
  • Eom, Keesseon S. (Department of Internal Medicine, Chuncheon Sacred Heart Hospital, Department of Parasitology, School of Medicine, Chungbuk National University) ;
  • Park, Min Sun (Department of Internal Medicine, Chuncheon Sacred Heart Hospital, Department of Parasitology, School of Medicine, Chungbuk National University) ;
  • Kwon, Oh Kyoung (Department of Internal Medicine, Chuncheon Sacred Heart Hospital, Department of Parasitology, School of Medicine, Chungbuk National University) ;
  • Kim, Hyo Sun (Department of Internal Medicine, Chuncheon Sacred Heart Hospital, Department of Parasitology, School of Medicine, Chungbuk National University) ;
  • Yoon, Jai Hoon (Department of Internal Medicine, Chuncheon Sacred Heart Hospital, Department of Parasitology, School of Medicine, Chungbuk National University)
  • Received : 2013.05.08
  • Accepted : 2013.07.06
  • Published : 2013.08.31
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Abstract

Diphyllobothrium nihonkaiense has been reported in Korea as Diphyllobothrium latum because of their close morphologic resemblance. We have identified a human case of D. nihonkaiense infection using the mitochondrial cytochrome c oxidase subunit I (cox1) gene sequence analysis. On 18 February 2012, a patient who had consumed raw fish a month earlier visited our outpatient clinic with a long tapeworm parasite excreted in the feces. The body of the segmented worm was 2 m long and divided into the scolex (head) and proglottids. It was morphologically close to D. nihonkaiense and D. latum. The cox1 gene analysis showed 99.4% (340/342 bp) homology with D. nihonkaiense but only 91.8% (314/342 bp) homology with D. latum. The present study suggested that the Diphyllobothrium spp. infection in Korea should be analyzed with specific DNA sequence for an accurate species identification.

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References

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