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Korean J Parasitol > Volume 57(4):2019 > Article
The Korean Journal of Parasitology 2019;57(4):417-422. doi: https://doi.org/10.3347/kjp.2019.57.4.417
Ten Cases of Taenia saginata Infection Confirmed by Analysis of the Internal Transcribed Spacer 1 rDNA Region in the Republic of Korea
Su-Min Song1,6, Hae Soo Yun1, Dorene VanBik1, Hyun-Ha Chang2, Sang-Ah Lee2, Shin-Woo Kim2, Namhee Ryoo3, Dong Yeub Eun4, Nan Young Lee5, Youn-Kyoung Goo1, Yeonchul Hong1, Meesun Ock6, Hee-Jae Cha6, Dong-Il Chung1
1Department of Parasitology and Tropical Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea
2Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea
3Department of Laboratory Medicine Keimyung University School of Medicine, Dongsan Medical Center, Daegu 41931, Korea
4Dr. Eun’s Internal Medicine Clinic, Daegu 42688, Korea
5Sangju Red Cross Hospital, Department of laboratory Medicine, Daegu 37199, Korea
6Department of Parasitology and Genetics, Kosin University College of Medicine, Busan 49267, Korea
* Corresponding Author: Youn-Kyoung Goo, Email: kuku1819@knu.ac.kr / Hee-Jae Cha, Email: hcha@kosin.ac.kr
Received: March 14, 2019;  Revised: May 7, 2019;  Accepted: June 15, 2019.
From October 2015 to August 2018, tapeworm proglottids were obtained from 10 patients who were residents of Daegu and Gyeongbuk provinces and had a history of raw beef consumption. Most of them had no overseas travel experience. The gravid proglottids obtained from the 10 cases had 15-20 lateral uterine branches. A part of internal transcribed spacer 1 (ITS1) DNA of the 10 cases, amplified by polymerase chain reaction (PCR) and digested with AleI restriction enzyme, produced the same band pattern of Taenia saginata, which differentiated from T. asiatica and T. solium. Sequences of ITS1 and cytochrome c oxidase subunit 1 (cox1) showed higher homology to T. saginata than to T. asiatica and T. solium. Collectively, these 10 cases were identified as T. saginata human infections. As taeniasis is one of the important parasitic diseases in humans, it is necessary to maintain hygienic conditions during livestock farming to avoid public health concerns.
Key words: Taenia saginata, taeniasis, ITS1, PCR-RFLP, PstI, AleI
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