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Occurrence of a Hybrid Between Taenia saginata and Taenia asiatica Tapeworms in Cambodia

Korean Journal of Parasitology 2021년 59권 2호 p.179 ~ 182
장태희, 정봉관, 홍수지, Shin Hye-Joo, Ryoo Seung-Wan, 이정규, Lee Keon-Hoon, 박한솔, 엄기선, Khieu Virak, Huy Rekol, 손운목, 채종일,
소속 상세정보
장태희 ( Chang Tae-Hee ) - Korea Association of Health Promotion Institute of Parasitic Diseases
정봉관 ( Jung Bong-Kwang ) - Korea Association of Health Promotion Institute of Parasitic Diseases
홍수지 ( Hong Soo-Ji ) - Korea Association of Health Promotion Institute of Parasitic Diseases
 ( Shin Hye-Joo ) - Korea Association of Health Promotion Institute of Parasitic Diseases
 ( Ryoo Seung-Wan ) - Korea Association of Health Promotion Institute of Parasitic Diseases
이정규 ( Lee Jeong-Gyu ) - Korea Association of Health Promotion Institute of Parasitic Diseases
 ( Lee Keon-Hoon ) - Korea Association of Health Promotion Institute of Parasitic Diseases
박한솔 ( Park Han-Sol ) - Chungbuk National University School of Medicine Department of Parasitology
엄기선 ( Eom Kee-Seon S. ) - Chungbuk National University School of Medicine Department of Parasitology
 ( Khieu Virak ) - Ministry of Health National Center for Parasitology, Entomology and Malaria Control
 ( Huy Rekol ) - Ministry of Health National Center for Parasitology, Entomology and Malaria Control
손운목 ( Sohn Woon-Mok ) - Gyeongsang National University College of Medicine Department of Parasitology and Tropical Medicine
채종일 ( Chai Jong-Yil ) - Korea Association of Health Promotion Institute of Parasitic Diseases

Abstract


Human infection with Taenia asiatica or a hybrid between Taenia saginata and T. asiatica has not been reported in Cambodia. We detected for the first time a hybrid form between T. saginata and T. asiatica in Preah Vihear Province, Cambodia. An adult tapeworm specimen, i.e., 75 cm long strobila without scolex, was expelled from a 27-year-old man after praziquantel medication and purging. It was morphologically indistinguishable between T. saginata and T. asiatica. Several proglottids were molecularly analyzed to confirm the tapeworm species. The mitochondrial gene encoding cytochrome c oxidase subunit 1 (cox1) and nuclear genes encoding elongation factor-1α (ef1) and ezrin-radixin-moesin (ERM)-like protein (elp) were sequenced, and a single-allele analysis was performed to confirm the haploid genotype. The results revealed that our sample showed a discrepancy between the mitochondrial and 2 nuclear genes. It possessed homozygous sequences typical of T. saginata at cox1 and ef1 loci. However, it was heterozygous at the elp locus, with 1 allele in T. asiatica (elpA) and 1 in T. saginata (elpC), which indicates that it is a hybrid between T. saginata and T. asiatica. The present results confirmed the presence of a hybrid between T. saginata and T. asiatica in Cambodia and strongly suggest the existence of also ‘pure’ T. asiatica in Cambodia.

키워드

Taenia saginata; Taenia asiatica; hybrid; allelic study; Cambodia

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