Parasites, Hosts and Diseases

"Asia"

Mini Review

Inflammatory response to Trichomonas vaginalis in the pathogenesis of prostatitis and benign prostatic hyperplasia: Ik-Hwan Han, Jung-Hyun Kim, Jae-Sook Ryu; Parasites Hosts Dis 2023;61(1):2-14.
Published online February 22, 2023; DOI: https://doi.org/10.3347/PHD.22160

Abstract
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Trichomonas vaginalis is a flagellated protozoan that causes trichomoniasis, a common nonviral sexually transmitted infection. T. vaginalis infection is asymptomatic in most infected men but can lead to chronic infection. The inflammatory response to chronic T. vaginalis infection may contribute to prostatic diseases, such as prostatitis and benign prostatic hyperplasia (BPH); however, studies on the relationship between T. vaginalis infection and prostate diseases are scarce. In this review, we discuss evidence from our studies on the involvement of T. vaginalis in the pathogenesis of prostate diseases, such as prostatitis and BPH. Studies of prostatitis have demonstrated that the attachment of T. vaginalis trophozoite to prostate epithelial cells (PECs) induces inflammatory cytokine production and inflammatory cell migration, leading to prostatitis. T. vaginalis also causes pathological changes, such as inflammatory cell infiltration, acinar changes, interstitial fibrosis, and mast cell infiltration, in prostate tissues of infected rats. Thus, T. vaginalis is considered an infectious agent that triggers prostatitis. Meanwhile, studies of prostatic hyperplasia revealed that mast cells activated by T. vaginalis-infected prostate cells secreted inflammatory mediators, such as β-hexosaminidase and tryptase, which promoted proliferation of prostate stromal cell (PSC). Moreover, interleukin-6 produced by proliferating PSCs induced the multiplication of BPH-1 epithelial cells as a result of stromal–epithelial interaction, suggesting that the proliferation of T. vaginalis-infected prostate cells can be induced through crosstalk with mast cells. These collective findings suggest that T. vaginalis contributes to the progression of prostatitis and prostatic hyperplasia by creating an inflammatory microenvironment involving PECs and PSCs.

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Immunomodulatory roles of autophagic flux and IFIT in human ectocervical cells upon Trichomonas vaginalis infection
Ching-Chun Liu, Lichieh Julie Chu, Yuan-Ming Yeh, Hsin-Chung Lin, Lih-Chyang Chen, Ching-Yun Huang, Shu-Fang Chiu, Fang-Wen Cheng, Wei-Ning Lin, Kuo-Yang Huang
International Immunopharmacology.2025; 155: 114643. CrossRef
Detection of trichomonads in induced sputum from asthma patients in Korea
Myung-hee Yi, Myungjun Kim, Jun Ho Choi, Yoon Hee Cho, Hyun Kyung Oh, Jung-Won Park, Ju Yeong Kim
Parasites, Hosts and Diseases.2025; 63(3): 254. CrossRef
Interplay of obesity and parasitic infection: current evidence of immunogenesis, tumorigenesis and leptin receptor involvement
Enas El Saftawy, Mansour Alghamdi, Basma Emad Aboulhoda
Nutrition & Metabolism.2025;[Epub] CrossRef
The Past, Present, and Future in the Diagnosis of a Neglected Sexually Transmitted Infection: Trichomoniasis
Alexandra Ibáñez-Escribano, Juan José Nogal-Ruiz
Pathogens.2024; 13(2): 126. CrossRef
Evaluation of the clinical application value of cytokine expression profiles in the differential diagnosis of prostate cancer
Rongfa Chen, Linna Liu, Hui Chen, Chao Xing, Tingting Zhang, Yilin Pang, Xunjun Yang
Cancer Immunology, Immunotherapy.2024;[Epub] CrossRef
CysLT receptor-mediated NOX2 activation is required for IL-8 production in HMC-1 cells induced by Trichomonas vaginalis-derived secretory products
Young Ah Lee, Myeong Heon Shin
Parasites, Hosts and Diseases.2024; 62(3): 270. CrossRef
Dynamin 2-mediated endocytosis of BLT1 is required for IL-8 production in HMC-1 cells induced by Trichomonas vaginalis-derived secretory products
Young Ah Lee, Myeong Heon Shin
Parasites, Hosts and Diseases.2024; 62(3): 281. CrossRef

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Original Article

Signaling Role of Adipocyte Leptin in Prostate Cell Proliferation Induced by Trichomonas vaginalis: Jung-Hyun Kim, Ik-Hwan Han, Su-Jin Shin, Sung-Yul Park, Hyo-Yeoung Chung, Jae-Sook Ryu; Korean J Parasitol 2021;59(3):235-249.
Published online June 21, 2021; DOI: https://doi.org/10.3347/kjp.2021.59.3.235

Abstract
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Leptin is a type of adipokine mainly produced by adipocytes and reported to be overproduced in prostate cancer. However, it is not known whether it stimulates the proliferation of prostate cells. In this study, we investigated whether benign prostatic hyperplasia epithelial cells (BPH-1 cells) infected with Trichomonas vaginalis induced the proliferation of prostate cells via a leptin signaling pathway. To investigate the effect of crosstalk between adipocyte leptin and inflamed epithelial cell in proliferation of prostate cells, adipocytes 3T3-L1 cells were incubated in conditioned medium of BPH-1 cells infected with T. vaginalis (T. vaginalis-conditioned medium, TCM), and then the adipocyte-conditioned medium (ATCM) was identified to cause proliferation of prostate cells. BPH-1 cells incubated with live T. vaginalis released pro-inflammatory cytokines, and conditioned medium of these cells caused migration of adipocytes. When prostate stromal cells and BPH-1 cells were incubated with adipocyte conditioned medium containing leptin, their growth rates increased as did expression of the leptin receptor (known as OBR) and signaling molecules such as JAK2/STAT3, Notch and survivin. Moreover, blocking the OBR reduced this proliferation and the expression of leptin signaling molecules in response to ATCM. In conclusion, our findings show that inflamed BPH-1 cells infected with T. vaginalis induce the proliferation of prostate cells through leptin-OBR signaling. Therefore, it is likely that T. vaginalis contributes to prostate enlargement in BPH via adipocyte leptin released as a result of inflammation of the prostate.

Citations

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Interplay of obesity and parasitic infection: current evidence of immunogenesis, tumorigenesis and leptin receptor involvement
Enas El Saftawy, Mansour Alghamdi, Basma Emad Aboulhoda
Nutrition & Metabolism.2025;[Epub] CrossRef
Intrinsic and extrinsic factors causing hyperplasia of the prostate
Yuki Kyoda, Kosuke Shibamori, Tetsuya Shindo, Takeshi Maehana, Kohei Hashimoto, Ko Kobayashi, Toshiaki Tanaka, Fumimasa Fukuta, Naoya Masumori
International Journal of Urology.2024; 31(7): 705. CrossRef
Association between metabolic syndrome and benign prostatic hyperplasia: The underlying molecular connection
Xun Fu, Yutao Wang, Yi Lu, Jiang Liu, Hongjun Li
Life Sciences.2024; 358: 123192. CrossRef
Point-of-Care Diagnostic for Trichomonas vaginalis, the Most Prevalent, Non-Viral Sexually Transmitted Infection
John F. Alderete, Hermes Chan
Pathogens.2023; 12(1): 77. CrossRef
Trichomonas vaginalis excretory secretory proteins reduce semen quality and male fertility
Zhenchao Zhang, Fakun Li, Yangyang Deng, Yuhua Li, Wanxin Sheng, Xiaowei Tian, Zhenke Yang, Shuai Wang, Lihua Guo, Lixia Hao, Xuefang Mei
Acta Tropica.2023; 238: 106794. CrossRef
The correlation between Trichomonas vaginalis infection and reproductive system cancer: a systematic review and meta-analysis
Zhenchao Zhang, Dongxian Li, Yuhua Li, Rui Zhang, Xianghuan Xie, Yi Yao, Linfei Zhao, Xiaowei Tian, Zhenke Yang, Shuai Wang, Xuejing Yue, Xuefang Mei
Infectious Agents and Cancer.2023;[Epub] CrossRef
Inflammatory response to Trichomonas vaginalis in the pathogenesis of prostatitis and benign prostatic hyperplasia
Ik-Hwan Han, Jung-Hyun Kim, Jae-Sook Ryu
Parasites, Hosts and Diseases.2023; 61(1): 2. CrossRef
Proliferation of Mouse Prostate Cancer Cells Inflamed by Trichomonas vaginalis
Sang-Su Kim, Kyu-Shik Kim, Ik-Hwan Han, Yeseul Kim, Seong Sik Bang, Jung-Hyun Kim, Yong-Suk Kim, Soo-Yeon Choi, Jae-Sook Ryu
The Korean Journal of Parasitology.2021; 59(6): 547. CrossRef
Involvement of Macrophages in Proliferation of Prostate Cancer Cells Infected with Trichomonas vaginalis
Kyu-Shik Kim, Hong-Sang Moon, Sang-Su Kim, Jae-Sook Ryu
The Korean Journal of Parasitology.2021; 59(6): 557. CrossRef

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Brief Communication

Infection Status of Gnathostoma spinigerum Larvae in Asian Swamp Eels, Monopterus albus, Purchased from Local Markets in Cambodia: Jong-Yil Chai, Bong-Kwang Jung, Keon Hoon Lee, Sung-Jong Hong, Virak Khieu, Byoung-Kuk Na, Woon-Mok Sohn; Korean J Parasitol 2020;58(6):695-699.
Published online December 29, 2020; DOI: https://doi.org/10.3347/kjp.2020.58.6.695

Abstract
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Present study was performed to know the infection status of Gnathostoma sp. larvae in swamp eels from Cambodia. We purchased total 30 Asian swamp eels, Monopterus albus, from local markets in Pursat and Takeo Provinces and Phnom Penh on May and November 2017 and May 2018. All collected eels were transferred to our laboratory with ice and each of them was examined by artificial digestion method. A total of 15 larval gnathostomes (1-5 larvae) were detected from 55.6% (5/9) swamp eels in Pursat Province. No larval gnathostomes were found in 21 swamp eels in Takeo Province and Phnom Penh. The advanced third-stage larvae (AdL₃) detected were 2.575-3.825 (3.250) mm in length and 0.375-0.425 (0.386) mm in width. They had the characteristic head bulb (av. 0.104×0.218 mm) with 4 rows of hooklets, long muscular esophagus (1.048 mm), and 2 pairs of cervical sacs (0.615 mm). The number of hooklets in 4 rows on the head bulb was 41, 44, 47, and 50. In scanning electron microscopy, characteristic features were 4 rows of hooklets on the head bulb, cervical papillae, tegumental spines regularly arranged in transverse striations, and anus. The larval gnathostomes were identified as AdL₃ of Gnathostoma spinigerum based on the morphological characters. By the present study, it has been confirmed that G. spinigerum larvae are infected in Asian swamp eels, M. albus, in Pursat Province, Cambodia.

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Biological Hazards and Indicators Found in Products of Animal Origin in Cambodia from 2000 to 2022: A Systematic Review
Shwe Phue San, Rortana Chea, Delia Grace, Kristina Roesel, Sothyra Tum, Stephen Young, Tumnoon Charaslertrangsi, Nazanin Zand, Shetty Seetharama Thombathu, Ra Thorng, Leab Kong, Kuok Fidero, Linda Nicolaides
International Journal of Environmental Research and Public Health.2024; 21(12): 1621. CrossRef
Intracameral Gnathostomiasis: A Case Report and Literature Review
Wijak Kongwattananon, Thanaporn Wiriyabanditkul, Waraluck Supwatjariyakul, Thanapong Somkijrungroj
Ocular Immunology and Inflammation.2023; 31(5): 1092. CrossRef
Detection of Gnathostoma spinigerum Advanced 3rd-Stage Larvae in the Chinese Edible Frog, Hoplobatrachus rugulosus, from Local Markets in Phnom Penh, Cambodia
Woon-Mok Sohn, Bong-Kwang Jung, Sooji Hong, Seungwan Ryoo, Keon Hoon Lee, Virak Khieu, Jong-Yil Chai
The Korean Journal of Parasitology.2021; 59(5): 519. CrossRef

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Original Articles

Asia and Europe: So Distant So Close? The Case of Lipoptena fortisetosa in Italy: Annalisa Andreani, Annunziata Giangaspero, Marianna Marangi, Alessandra Barlaam, Maria Paola Ponzetta, Lise Roy, Antonio Belcari, Patrizia Sacchetti; Korean J Parasitol 2020;58(6):661-668.
Published online December 29, 2020; DOI: https://doi.org/10.3347/kjp.2020.58.6.661

In Europe, 5 Lipoptena species have been recorded, including Lipoptena fortisetosa. This species, native to Asian countries, was described as a parasite of sika deer and its appearance in Europe dates back to more than 50 years ago. Lipoptena fortisetosa has been recently reported in Italy, sharing its hosts with Lipoptena cervi. A morpho-molecular approach was developed to determine the phylogenetic interrelationship of Italian and Asian CO1 haplotypes sequenced from Lipoptena fly individuals collected in Italy, and their DNA sequences were compared with conspecifics available in GenBank; morphological key-characters (terminalia) of L. fortisetosa were compared with the original description. Two haplotypes were recorded from Italy and assigned to L. cervi and L. fortisetosa, respectively. The latter was part of the monophyletic clade L. fortisetosa, along with 2 Central European and 2 Korean haplotypes (100% identical with one of the Korean haplotypes); moreover, Italian L. fortisetosa female terminalia were consistent with the original description of Asian individuals. Pending more in-depth investigations, this study provides a first answer to the hypothesis of the recent colonization of Italy by L. fortisetosa from Asia as we did not detect any obvious and stable morphological and molecular differences in specimens from the 2 geographical areas. The presence of the sika deer in Europe was retraced and the possible route traveled by the parasite from Asia and the eco-biological factors that may have enhanced its settlement are discussed.

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First report of the deer ked, Lipoptena cervi, and associated pathogens in southern Québec, Canada
Catherine Bouchard, Ariane Dumas, Elizabeth Dyer, Carol-Ann Desrochers-Plourde, Raphaëlle Audet-Legault, Marine Hubert, Cécile Aenishaenslin, Jean-Philippe Rocheleau, Patrick Leighton, Anaïs Gasse, Mahmood Iranpour, Joel Smid, Brooks Waitt, Jade Savage, H
Journal of Medical Entomology.2025;[Epub] CrossRef
Molecular identification of severe fever with thrombocytopenia syndrome virus in deer ked: Implications for disease transmission
Mark Anthony B. Casel, Jeong Ho Choi, Hyunwoo Jang, Seung-gyu Jang, Juryeon Gil, Rare Rollon, So-youn Cheun, Isaac Choi, Eun-ha Kim, Young-Il Kim, Young Ki Choi
One Health.2025; 21: 101107. CrossRef
The enigmatic case of Lipoptena sp. in the Bosco della Mesola Nature Reserve (Italy)
Federica Usai, Filippo Maria Dini, Ilaria Guarniero, Enrica Bellinello, Laura Stancampiano
Medical and Veterinary Entomology.2025;[Epub] CrossRef
The role of deer keds (Diptera: Hippoboscidae: Lipoptena and Neolipoptena) in occupational and public health
Markus Braun, Doris Klingelhöfer, Dörthe Brüggmann, Isabelle Marie Kramer
Journal of Occupational Medicine and Toxicology.2025;[Epub] CrossRef
Reports of Lipoptena fortisetosa on dogs and in the environment, and evidence of its widespread establishment in Hungary
Adrienn Gréta Tóth, Attila Bende, Sándor Hornok, Zsombor Wagenhoffer, Balázs Szulyovszky, Viktória Galla, Petra Vöröskői, Gergő Keve
International Journal for Parasitology: Parasites and Wildlife.2025; 28: 101161. CrossRef
Molecular and morphological analysis revealed a new Lipoptena species (Diptera: Hippoboscidae) in southern Spain harbouring Coxiella burnetii and bacterial endosymbionts
Mikel Alexander González, Ignacio Ruiz-Arrondo, Sergio Magallanes, Jozef Oboňa, María José Ruiz-López, Jordi Figuerola
Veterinary Parasitology.2024; 332: 110300. CrossRef
Two cases of introducing Lipoptena fortisetosa Maa (Diptera: Hippoboscidae) into Europe through different deer species
Aleksandra Yatsuk, Tatiana Triseleva, Aleksander Matyukhin, Andrey Safonkin, Emilia Nartshuk
Journal of Natural History.2024; 58(41-44): 1787. CrossRef
First report of Lipoptena axis Maa, 1965, from captive cervids in Thailand, based on morphological and molecular data
Tiwat Thanwiset, Opal Pitaksakulrat, Nuttanan Hongsrichan, Thidarut Boonmars, Nophawan Bunchu, Ketsarin Thipphet, Chavin Chaisongkram, Kanda Ponsrila, Siriwan Kimkamkaew, Thanakorn Rompo, Mackenzie L. Kwak, Ryo Nakao, David Blair, Chatanun Eamudomkarn
Scientific Reports.2024;[Epub] CrossRef
Possible role of Lipoptena fortisetosa (Diptera: Hippoboscidae) as a potential vector for Theileria spp. in captive Eld's deer in Khao Kheow open zoo, Thailand
Sonthaya Tiawsirisup, Nichapat Yurayart, Kritsada Thongmeesee, Chalida Sri-in, Chatlada Akarapas, Ganyawee Rittisornthanoo, Natcha Bunphungbaramee, Natthanicha Sipraya, Umaporn Maikaew, Piyaporn Kongmakee, Arpussara Saedan
Acta Tropica.2023; 237: 106737. CrossRef
A brief review on deer keds of the genus Lipoptena (Diptera: Hippoboscidae)
Nouhoum Dibo, Yanjun Yang, Xiang Wu, Fanming Meng
Veterinary Parasitology.2023; 313: 109850. CrossRef
Analysis of the bacterial communities associated with pupae and winged or wingless adults of Lipoptena fortisetosa collected from cervids in Italy
Annalisa Andreani, Chiara Beltramo, Maria Paola Ponzetta, Antonio Belcari, Patrizia Sacchetti, Pier Luigi Acutis, Simone Peletto
Medical and Veterinary Entomology.2023; 37(3): 472. CrossRef
Molecular Characterization of Lipoptena fortisetosa from Environmental Samples Collected in North-Eastern Poland
Remigiusz Gałęcki, Xuenan Xuan, Tadeusz Bakuła, Jerzy Jaroszewski
Animals.2021; 11(4): 1093. CrossRef
Distribution of Deer Keds (Diptera: Hippoboscidae) in Free-Living Cervids of the Tuscan-Emilian Apennines, Central Italy, and Establishment of the Allochthonous Ectoparasite Lipoptena fortisetosa
Annalisa Andreani, Laura Stancampiano, Antonio Belcari, Patrizia Sacchetti, Riccardo Bozzi, Maria Paola Ponzetta
Animals.2021; 11(10): 2794. CrossRef

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Archaeoparasitological Analysis of Samples from the Cultural Layer of Nadym Gorodok dated Back to the 14th-Late 18th Centuries: Sergey Mikhailovich Slepchenko, Oleg Viktorovich Kardash, Vyacheslav Sergeyevich Slavinsky, Sergey Nikolaevich Ivanov, Rakultseva Daria Sergeyevna, Alexander Alekseevich Tsybankov, Dong Hoon Shin; Korean J Parasitol 2019;57(6):567-573.
Published online December 31, 2019; DOI: https://doi.org/10.3347/kjp.2019.57.6.567

Abstract
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An archaeoparasitological analysis of the soil samples from Nadym Gorodok site of Western Siberia has been carried out in this study. The archaeological site was dated as the 13 to 18th century, being characterized as permafrost region ensuring good preservation of ancient parasite eggs. Parasite eggs as Opisthorchis felineus, Alaria alata, and Diphyllobothrium sp. were found in the archaeological soil samples, which made clear about the detailed aspects of Nadym Gorodok people’s life. We found the Diphyllobothrium sp. eggs throughout the 14 to 18th century specimens, allowing us to presume that raw or undercooked fish might have been commonly used for the foods of Nadym Gorodok inhabitants and their dogs for at least the past 400 years. Our study on Nadym Gorodok specimens also demonstrate that there might have been migratory interactions and strong economic ties between the people and society in Western Siberia, based on archaeoparasitological results of Opisthorchis felineus in Western Siberia.

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Early history of parasitic diseases in northern dogs revealed by dog paleofeces from the 9000-year-old frozen Zhokhov site in the New Siberian Islands of East Siberian Arctic
S.M. Slepchenko, A.V. Khrustalev, S.N. Ivanov, I.V. Titova, A.K. Kasparov, V.G. Chasnyk, E.Y. Pavlova, V.V. Pitulko
Journal of Archaeological Science.2025; 182: 106337. CrossRef
Clonorchiasis and opisthorchiasis: epidemiology, transmission, clinical features, morbidity, diagnosis, treatment, and control
Men-Bao Qian, Jennifer Keiser, Jürg Utzinger, Xiao-Nong Zhou, Graeme N. Forrest
Clinical Microbiology Reviews.2024;[Epub] CrossRef
Archaeoparasitology and pathoecology of Buchta Nakhodka, a medieval settlement in the far north of Western Siberia, dating from the 13th century
S.M. Slepchenko, T.V. Lobanova, O.V. Kardash, G.V. Alyamkin, S.N. Ivanov, A.V. Chrustalev
Journal of Archaeological Science: Reports.2024; 59: 104754. CrossRef
Paleoparasitology research on ancient helminth eggs and larvae in the Republic of Korea
Jong-Yil Chai, Min Seo, Dong Hoon Shin
Parasites, Hosts and Diseases.2023; 61(4): 345. CrossRef
New contribution of archaeoparasitology in the Far North of Eastern Siberia: First data about the parasitological spectrum of Stadukhinsky Fort in the 17th-18th centuries
Sergey Mikhailovich Slepchenko, Tatiana Vladimirovna Lobanova, Georgy Petrovich Vizgalov, Georgy Viktorovich Alyamkin, Sergey Nikolaevich Ivanov
Journal of Archaeological Science: Reports.2022; 41: 103304. CrossRef
Archaeoparasitological data and pathoecology of the town of Mangazeya in Western Siberia in the 17th century
Sergey Mikhailovich Slepchenko, Tatiana Vladimirovna Lobanova, Georgy Petrovich Vizgalov, Sergey Nikolaevich Ivanov, Daria Sergeyevna Rakultseva
Journal of Archaeological Science: Reports.2021; 35: 102770. CrossRef
Archaeoparasitology — a new source of reconstruction of migrations of ancient populations: opportunities, results, and prospects
S.M. Slepchenko
VESTNIK ARHEOLOGII, ANTROPOLOGII I ETNOGRAFII.2021; (3(54)): 147. CrossRef
First results of the archaeoparasitological study of the Volna 1 burial ground (Temryuk District, Krasnodar Krai)
S.М. Slepchenko, N.I. Sudarev, I.V. Tsokur, A.N. Abramova
VESTNIK ARHEOLOGII, ANTROPOLOGII I ETNOGRAFII.2021; (4(55)): 125. CrossRef
Opisthorchis felineus as the basis for the reconstruction of migrations using archaeoparasitological materials
Sergey Slepchenko
Journal of Archaeological Science: Reports.2020; 33: 102548. CrossRef

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Mini Review

Acanthamoeba in Southeast Asia ? Overview and Challenges: Chooseel Bunsuwansakul, Tooba Mahboob, Kruawan Hounkong, Sawanya Laohaprapanon, Sukhuma Chitapornpan, Siriuma Jawjit, Atipat Yasiri, Sahapat Barusrux, Kingkan Bunluepuech, Nongyao Sawangjaroen, Cristina C. Salibay, Chalermpon Kaewjai, Maria de Lourdes Pereira, Veeranoot Nissapatorn; Korean J Parasitol 2019;57(4):341-357.
Published online August 31, 2019; DOI: https://doi.org/10.3347/kjp.2019.57.4.341

Abstract
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Acanthamoeba, one of free-living amoebae (FLA), remains a high risk of direct contact with this protozoan parasite which is ubiquitous in nature and man-made environment. This pathogenic FLA can cause sight-threatening amoebic keratitis (AK) and fatal granulomatous amoebic encephalitis (GAE) though these cases may not commonly be reported in our clinical settings. Acanthamoeba has been detected from different environmental sources namely; soil, water, hot-spring, swimming pool, air-conditioner, or contact lens storage cases. The identification of Acanthamoeba is based on morphological appearance and molecular techniques using PCR and DNA sequencing for clinico-epidemiological purposes. Recent treatments have long been ineffective against Acanthamoeba cyst, novel anti-Acanthamoeba agents have therefore been extensively investigated. There are efforts to utilize synthetic chemicals, lead compounds from medicinal plant extracts, and animal products to combat Acanthamoeba infection. Applied nanotechnology, an advanced technology, has shown to enhance the anti-Acanthamoeba activity in the encapsulated nanoparticles leading to new therapeutic options. This review attempts to provide an overview of the available data and studies on the occurrence of pathogenic Acanthamoeba among the Association of Southeast Asian Nations (ASEAN) members with the aim of identifying some potential contributing factors such as distribution, demographic profile of the patients, possible source of the parasite, mode of transmission and treatment. Further, this review attempts to provide future direction for prevention and control of the Acanthamoeba infection.

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Brief Communication

Comparison of Seropositivity to Trichomonas vaginalis between Men with Prostatic Tumor and Normal Men: Jung-Hyun Kim, Hong-Sang Moon, Kyu-Shik Kim, Hwan-Sik Hwang, Jae-Sook Ryu, Sung-Yul Park; Korean J Parasitol 2019;57(1):21-25.
Published online February 26, 2019; DOI: https://doi.org/10.3347/kjp.2019.57.1.21

Abstract
PDF

Trichomoniasis is the most common curable sexually-transmitted infection. Most Trichomonas vaginalis-infected men are asymptomatic and can remain undiagnosed and untreated, and this has been thought to result in chronic persistent prostatic infection. Chronic inflammation is regarded as the major factor in the pathogenesis and progression of benign prostatic hyperplasia (BPH) and prostatic cancer (PCa). The aim of this study is to identify seropositivity to T. vaginalis in men with prostate tumors (BPH or PCa) visited to Hanyang University Hospital. A total of 183 men were enrolled between October 2013 and November 2014. They consisted of 139 with BPH (mean age: 64.0 ± 0.07) and 44 with prostate cancer (mean age: 73.3±0.18). We carried out ELISA to identify the seropositivity to T. vaginalis. Mixed lysate antigen extracted from 8 strains of T. vaginalis was used in the ELISA. Also 58 male outpatients visited to Health Promotion Center in Hanyang University Hospital were evaluated for comparing group. As a results, seropositivity to T. vaginalis in patients with prostatic diseases was 19.7% (BPH: 18.7%, PCa: 22.7%) and it was significantly higher than the 1.7% of the comparing healthy group (P = 0.001). Therefore, prostatic tumor showed higher seropositivity against T. vaginalis than normal men. As far as we know, this is the first report about seroprevalence in prostatic tumor in Korea.

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Original Article

Inflammatory Responses in a Benign Prostatic Hyperplasia Epithelial Cell Line (BPH-1) Infected with Trichomonas vaginalis: Sang-Su Kim, Jung-Hyun Kim, Ik-Hwan Han, Myoung-Hee Ahn, Jae-Sook Ryu; Korean J Parasitol 2016;54(2):123-132.
Published online April 30, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.2.123

Abstract
PDF

Trichomonas vaginalis causes the most prevalent sexually transmitted infection worldwide. Trichomonads have been detected in prostatic tissues from prostatitis, benign prostatic hyperplasia (BPH), and prostate cancer. Chronic prostatic inflammation is known as a risk factor for prostate enlargement, benign prostatic hyperplasia symptoms, and acute urinary retention. Our aim was to investigate whether T. vaginalis could induce inflammatory responses in cells of a benign prostatic hyperplasia epithelial cell line (BPH-1). When BPH-1 cells were infected with T. vaginalis, the protein and mRNA of inflammatory cytokines, such as CXCL8, CCL2, IL-1β, and IL-6, were increased. The activities of TLR4, ROS, MAPK, JAK2/STAT3, and NF-κB were also increased, whereas inhibitors of ROS, MAPK, PI3K, NF-κB, and anti-TLR4 antibody decreased the production of the 4 cytokines although the extent of inhibition differed. However, a JAK2 inhibitor inhibited only IL-6 production. Culture supernatants of the BPH-1 cells that had been incubated with live T. vaginalis (trichomonad-conditioned medium, TCM) contained the 4 cytokines and induced the migration of human monocytes (THP-1 cells) and mast cells (HMC-1 cells). TCM conditioned by BPH-1 cells pretreated with NF-κB inhibitor showed decreased levels of cytokines and induced less migration. Therefore, it is suggested that these cytokines are involved in migration of inflammatory cells. These results suggest that T. vaginalis infection of BPH patients may cause inflammation, which may induce lower urinary tract symptoms (LUTS).

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Case Report

Infection of Taenia asiatica in a Bai Person in Dali, China: Li Wang, Xuenong Luo, Junling Hou, Aijiang Guo, Shaohua Zhang, Hailong Li, Xuepeng Cai; Korean J Parasitol 2016;54(1):67-70.
Published online February 26, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.1.67

Abstract
PDF

We report here a human case of Taenia asiatica infection which was confirmed by genetic analyses in Dali, China. A patient was found to have symptoms of taeniasis with discharge of tapeworm proglottids. By sequencing of the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene, we observed nucleotide sequence identity of 99% with T. asiatica and 96% with T. saginata. Using the cytochrome b (cytb) gene, 99% identity with T. asiatica and 96% identity with T. saginata were found. Our findings suggest that taeniasis of people in Dali, China may be mainly caused by T. asiatica.

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Case Report: Molecular Diagnosis Revealing an Intestinal Infection of a Hybridized Tapeworm (Taenia saginata and Taenia asiatica) to Human in Yunnan, China
Kan-Kan Chu, Ye Qiu, Ce-Heng Liao, Zhi You, Zuo-Shun He, Wen Fang, Hong-Ying Li, Peter Daszak, Jun-Jie Hu, Yun-Zhi Zhang, Xing-Yi Ge
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Parasites & Vectors.2018;[Epub] CrossRef

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Original Article

Larval Gnathostoma spinigerum Detected in Asian Swamp Eels, Monopterus albus, Purchased from a Local Market in Yangon, Myanmar: Jong-Yil Chai, Woon-Mok Sohn, Byoung-Kuk Na, Jong-Bok Park, Hoo-Gn Jeoung, Eui-Hyug Hoang, Thi Thi Htoon, Htay Htay Tin; Korean J Parasitol 2015;53(5):619-625.
Published online October 29, 2015; DOI: https://doi.org/10.3347/kjp.2015.53.5.619

Abstract
PDF

The present study was performed to determine the infection status of swamp eels with Gnathostoma sp. larvae in Myanmar. We purchased total 37 Asian swamp eels, Monopterus albus, from a local market in Yangon in June and December 2013 and 2014. All collected eels were transferred with ice to our laboratory and each of them was examined by the artificial digestion technique. A total of 401 larval gnathostomes (1-96 larvae/eel) were detected in 33 (89.2%) swamp eels. Most of the larvae (n=383; 95.5%) were found in the muscle. The remaining 18 larvae were detected in the viscera. The advanced third-stage larvae (AdL₃) were 2.3-4.4 mm long and 0.25-0.425 mm wide. The characteristic head bulb (0.093 × 0.221 mm in average size) with 4 rows of hooklets, muscular long esophagus (1.025 mm), and 2 pairs of cervical sacs (0.574 mm) were observed by light microscopy. The average number of hooklets in the 1st, 2nd, 3rd, and 4th rows was 41, 45, 48, and 51, respectively. As scanning electron microscopic findings, the characteristic 4-5 rows of hooklets on the head bulb, a cervical papilla, tegumental spines regularly arranged in the transverse striations, and an anus were well observed. Based on these morphological characters, they were identified as the AdL₃ of Gnathostoma spinigerum. By the present study, it has been confirmed for the first time that Asian swamp eels, M. albus, from Yangon, Myanmar are heavily infected with G. spinigerum larvae.

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Lihai Xia, Panpan Han, Xiaoli Cheng, Youshen Li, Chuwen Zheng, Hanwen Yuan, Wenbing Zhang, Qiaoqing Xu
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Gnathostomatidae nematode parasite of Colomesus psittacus (Osteichthyes, Tetraodontiformes) in the Ilha de Marajó, Brazilian Amazon
Raul Henrique da Silva Pinheiro, Ricardo Luís Sousa Santana, Francisco Tiago Vasconcelos Melo, Jeannie Nascimento dos Santos, Elane Guerreiro Giese
Revista Brasileira de Parasitologia Veterinária.2017; 26(3): 340. CrossRef

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Mini Review

Plasmodium knowlesi as a Threat to Global Public Health: Roland Wesolowski, Alina Wozniak, Celestyna Mila-Kierzenkowska, Karolina Szewczyk-Golec; Korean J Parasitol 2015;53(5):575-581.
Published online October 29, 2015; DOI: https://doi.org/10.3347/kjp.2015.53.5.575

Abstract
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Malaria is a tropical disease caused by protozoans of the Plasmodium genus. Delayed diagnosis and misdiagnosis are strongly associated with higher mortality. In recent years, a greater importance is attributed to Plasmodium knowlesi, a species found mainly in Southeast Asia. Routine parasitological diagnostics are associated with certain limitations and difficulties in unambiguous determination of the parasite species based only on microscopic image. Recently, molecular techniques have been increasingly used for predictive diagnosis. The aim of the study is to draw attention to the risk of travelling to knowlesi malaria endemic areas and to raise awareness among personnel involved in the therapeutic process.

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J. Divyaparvathy, Harishma Ramesh
Indian Journal of Community Medicine.2025; 50(6): 1086. CrossRef
Mass spectrometry-based metabolomics uncovers distinct metabolic signatures and potential therapeutic targets in Plasmodium knowlesi
Naphatsamon Uthailak, Sadudee Chotirat, Ammarind Anatjitsupha, Waraporn Thongyod, Phornpimon Tipthara, Jetsumon Sattabongkot, Joel Tarning, Wang Nguitragool, Onrapak Reamtong, Érika Martins Braga
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Allison Bailey, Paula R. Prist
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International modified Delphi study on malaria preventive behaviour: new themes, contexts and framework for future research on Plasmodium knowlesi malaria
Nurul Athirah Naserrudin, Rozita Hod, Mohammad Saffree Jeffree, Kamruddin Ahmed, Mohd Rohaizat Hassan
BMJ Open.2023; 13(3): e067451. CrossRef
Developing a Predictive Model for Plasmodium knowlesi–Susceptible Areas in Malaysia Using Geospatial Data and Artificial Neural Networks
Rozita Hod, Siti Aisah Mokhtar, Farrah Melissa Muharam, Ummi Kalthom Shamsudin, Jamal Hisham Hashim
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Brief Communications

Morphological Characteristics of Normal and Gynandromorphic Hyalomma asiaticum Schulze and Schlottke, 1930: Ze Chen, You-quan Li, Qiao-Yun Ren, Jin Luo, Yonghong Hu, Kai Li, Guang-Yuan Liu, Jian-xun Luo, Jingze Liu, Hong Yin; Korean J Parasitol 2015;53(3):361-364.
Published online June 30, 2015; DOI: https://doi.org/10.3347/kjp.2015.53.3.361

Abstract
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Gynandromorphic ticks are extremely rare, and often attract parasitologists’ attention. During our examination of tick specimens, an engorged gynandromorph of Hyalomma asiaticum was noticed. This is the first record of gynandromorphic ticks from China. In this study, several important morphological structures of normal and gynandromorphic H. asiaticum were analyzed. Comparing to the normal H. asiaticum, the gynandromorphic specimen was a typical bipartite protogynander. Its right side showed normal female characteristics, whereas the left side had normal male traits. Different from other gynandromorphic ticks containing 1 anus, this tick reported here had 2 complete anuses, and the anus of the male part had a single adanal plate.

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A case of gynandromorphism in Hyalomma anatolicum (Ixodida: Ixodidae)
Yan Liu, Xiaoyun Mi, Bingjie Wang, Jun Wu, Wenwen He, Tingxiang Luo, Depeng Yang, Zhengxiang Hu, Lu Gan, Mingdalai Nuo, Huizhen Zheng, Ercha Hu, Qingyong Guo
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Mohammed Okely, Deon K. Bakkes, Lidia Chitimia-Dobler
Experimental and Applied Acarology.2022; 88(2): 225. CrossRef
Sequencing of complete mitochondrial genomes confirms synonymization of Hyalomma asiaticum asiaticum and kozlovi, and advances phylogenetic hypotheses for the Ixodidae
Zhi-Qiang Liu, Yan-Feng Liu, Nuer Kuermanali, Deng-Feng Wang, Shi-Jun Chen, Hui-Ling Guo, Li Zhao, Jun-Wei Wang, Tao Han, Yuan-Zhi Wang, Jie Wang, Chen-Feng Shen, Zhuang-Zhi Zhang, Chuang-Fu Chen, Ulrike Gertrud Munderloh
PLOS ONE.2018; 13(5): e0197524. CrossRef
Abnormal Development of Haemaphysalis qinghaiensis (Acari: Ixodidae)
Qiaoyun Ren, Ze Chen, Jin Luo, Guangyuan Liu, Guiquan Guan, Hong Yin, Jianxun Luo
Journal of Insect Science.2016;[Epub] CrossRef

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STAT6 Expression and IL-13 Production in Association with Goblet Cell Hyperplasia and Worm Expulsion of Gymnophalloides seoi from C57BL/6 Mice: Jin-Joo Lee, Donghee Kim, Kyoung-Ho Pyo, Min-Ki Kim, Hyo-Jin Kim, Jong-Yil Chai, Eun-Hee Shin; Korean J Parasitol 2013;51(5):589-594.
Published online October 31, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.5.589

Abstract
PDF

In intestinal helminth infections, Th2 immune respones are generally associated with mucin secretion for worm expulsion from the host intestine. In particular, IL-4 and IL-13 are the important cytokines related with intestinal mucus production via STAT6 signalling in nematode infections. However, this perspective has never been studied in Gymnophalloides seoi infection. The present study aimed to observe the STAT6 signalling and cytokine responses in C57BL/6 mice, a mouse strain resistant to infection with this trematode. The results showed that worm expulsion occurred actively during days 1-2 post-infection (PI), when goblet cells began to proliferate in the small intestine. The STAT6 gene expression in the mouse spleen became remarkable from day 2 PI. Moreover, G. seoi infection induced a significant increase of IL-13 from day 4 PI in the spleen of infected mice. Our results suggested that goblet cell hyperplasia and worm expulsion in G. seoi-infected mice should be induced by STAT6 signalling, in which IL-13 may be involved as a dominant triggering cytokine.

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Jenny K. Gustafsson, Gunnar C. Hansson
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Hongbo Yi, Denghu Jiang, Lin Zhang, Haitao Xiong, Feifei Han, Yizhen Wang
International Immunopharmacology.2016; 36: 199. CrossRef
Increased Intestinal Epithelial Cell Turnover and Intestinal Motility in Gymnophalloides seoi-Infected C57BL/6 Mice
Sang Hyub Lee, Bong-Kwang Jung, Jae-Hwan Park, Eun-Hee Shin, Jong-Yil Chai
The Korean Journal of Parasitology.2014; 52(3): 273. CrossRef

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Articles from Symposium on Asian Taenia (October 2011, Osong, Korea)s

Human Taeniasis in the Republic of Korea: Hidden or Gone?: Jong-Yil Chai; Korean J Parasitol 2013;51(1):9-17.
Published online February 18, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.1.9

Abstract
PDF

History and current status of human taeniasis in the Republic of Korea, due to Taenia solium, Taenia asiatica, and Taenia saginata, are briefly reviewed. Until the 1980s, human taeniasis had been quite common in various localities of Korea. A study from 1924 reported 12.0% egg prevalence in fecal examinations. Thereafter, the prevalence of Taenia spp. ranged from 3% to 14% depending on the time and locality. Jeju-do, where pigs were reared in a conventional way, was the highest endemic area of taeniasis. An analysis of internal transcribed spacer 2 and mitochondrial cytochrome c oxidase 1 genes of 68 taeniasis cases reported from 1935 to 2005 in Korea by a research group revealed the relative occurrence of the 3 Taenia spp. as follows: T. solium (4.4%), T. asiatica (75.0%), and T. saginata (20.6%). However, national surveys on intestinal helminths conducted every 5 years on randomly selected people revealed that the Taenia egg prevalence dropped from 1.9% in 1971 to 0.02% in 1997 and finally to 0.0% in 2004. With the exception of 3 egg-positive cases reported in 2008 and 2 worm-proven cases in 2011, no more cases have been officially recorded. Based on these surveys and also on other literature, it can be concluded that taeniasis has virtually disappeared from Korea, although a few sporadic cases may remain hidden. Human cysticercosis is also expected to disappear within a couple of decades in Korea.

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Sun Min Park, Changsun Choi, Min Suk Rhee
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Taehee Chang, Bong-Kwang Jung, Sooji Hong, Hyejoo Shin, Seungwan Ryoo, Jeonggyu Lee, Keon Hoon Lee, Hansol Park, Keeseon S. Eom, Virak Khieu, Rekol Huy, Woon-Mok Sohn, Jong-Yil Chai
The Korean Journal of Parasitology.2021; 59(2): 179. CrossRef
Disseminated Septic Lesions Caused by Staphylococcus epidermidis Mimicking Cysticercosis Detected on Ultrasonography in a Pediatric Patient with Acute Myeloid Leukemia
Jae Min Lee, Joon-Sik Choi, Keon Hee Yoo, Yae-Jean Kim, Sun-Ja Kim
Pediatric Infection & Vaccine.2020; 27(2): 134. CrossRef
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Ju Hyeon Shin, Eun Jeong Won, Jee Seung Jung, Kyung-Hwa Park, Kwang Il Nam, Soo Hyun Kim, Jong Hee Shin
BMC Infectious Diseases.2019;[Epub] CrossRef
Taeniasis and cysticercosis in Asia: A review with emphasis on molecular approaches and local lifestyles
Akira Ito, Tiaoying Li, Toni Wandra, Paron Dekumyoy, Tetsuya Yanagida, Munehiro Okamoto, Christine M Budke
Acta Tropica.2019; 198: 105075. CrossRef
Four Taeniasis saginata Cases Diagnosed at a University Hospital in Korea
Eun Jeong Won, Ju Hyeon Shin, Yu Jeong Lee, Moon-Ju Kim, Seung Ji Kang, Sook In Jung, Soo Hyun Kim, Jong Hee Shin, Jong-Yil Chai, Sung-Shik Shin
The Korean Journal of Parasitology.2019; 57(3): 313. CrossRef
Neurocysticercosis: Clinical Characteristics and Changes from 26 Years of Experience in an University Hospital in Korea
Hyo-Ju Son, Min Jae Kim, Kyung Hwa Jung, Sungim Choi, Jiwon Jung, Yong Pil Chong, Sung-Han Kim, Sang-Oh Lee, Sang-Ho Choi, Yang Soo Kim, Jun Hee Woo, Bong-Kwang Jung, Hyemi Song, Jong-Yil Chai
The Korean Journal of Parasitology.2019; 57(3): 265. CrossRef
Ten Cases of Taenia saginata Infection Confirmed by Analysis of the Internal Transcribed Spacer 1 rDNA Region in the Republic of Korea
Su-Min Song, Hae Soo Yun, Dorene VanBik, Hyun-Ha Chang, Sang-Ah Lee, Shin-Woo Kim, Namhee Ryoo, Dong Yeub Eun, Nan Young Lee, Youn-Kyoung Goo, Yeonchul Hong, Meesun Ock, Hee-Jae Cha, Dong-Il Chung
The Korean Journal of Parasitology.2019; 57(4): 417. CrossRef
A Case of Imported Taenia asiatica Infection in Japan
Hiroki Namikawa, Yasuhiko Takemoto, Ikuji Shimazaki, Ayako Makuuchi, Masanori Kobayashi, Shigeki Kinuhata, Koichi Yamada, Hiroki Fujimoto, Hiromitsu Toyoda, Noriko Kamata, Yoshihiro Tochino, Isao Teramoto, Niichiro Abe, Mina Morimura, Hiroshi Kakeya, Taic
Japanese Journal of Infectious Diseases.2018; 71(2): 170. CrossRef
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Eun Jeong Won, Bong-Kwang Jung, Hyemi Song, Mi-Seon Kim, Hyun-Seung Kim, Keon Hoon Lee, Min-Jae Kim, Myung Geun Shin, Jong Hee Shin, Soon-Pal Suh, Sung-Jong Hong, Woon-Mok Sohn, Thi Thi Htoon, Htay Htay Tin, Jong-Yil Chai
Emerging Infectious Diseases.2018; 24(6): 1156. CrossRef
Porcine cysticercosis (Taenia solium and Taenia asiatica): mapping occurrence and areas potentially at risk in East and Southeast Asia
Uffe Christian Braae, Nguyen Manh Hung, Fadjar Satrija, Virak Khieu, Xiao-Nong Zhou, Arve Lee Willingham
Parasites & Vectors.2018;[Epub] CrossRef
Cysticercosis/taeniasis endemicity in Southeast Asia: Current status and control measures
Hai-Wei Wu, Akira Ito, Lin Ai, Xiao-Nong Zhou, Luz P. Acosta, Arve Lee Willingham III
Acta Tropica.2017; 165: 121. CrossRef
Four Cases of Taenia saginata Infection with an Analysis of COX1 Gene
Jaeeun Cho, Bong-Kwang Jung, Hyemi Lim, Min-Jae Kim, Thanapon Yooyen, Dongmin Lee, Keeseon S. Eom, Eun-Hee Shin, Jong-Yil Chai
The Korean Journal of Parasitology.2014; 52(1): 79. CrossRef
Epidemiology and genetic diversity of Taenia asiatica: a systematic review
Anita Ale, Bjorn Victor, Nicolas Praet, Sarah Gabriël, Niko Speybroeck, Pierre Dorny, Brecht Devleesschauwer
Parasites & Vectors.2014;[Epub] CrossRef
Clinical Update on Parasitic Diseases
Min Seo
Korean Journal of Medicine.2013; 85(5): 469. CrossRef

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Genetic Diversity of Taenia asiatica from Thailand and Other Geographical Locations as Revealed by Cytochrome c Oxidase Subunit 1 Sequences: Malinee Thairungroj Anantaphruti, Urusa Thaenkham, Dorn Watthanakulpanich, Orawan Phuphisut, Wanna Maipanich, Tippayarat Yoonuan, Supaporn Nuamtanong, Somjit Pubampen, Surapol Sanguankiat; Korean J Parasitol 2013;51(1):55-59.
Published online February 18, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.1.55

Abstract
PDF

Twelve 924 bp cytochrome c oxidase subunit 1 (cox1) mitochondrial DNA sequences from Taenia asiatica isolates from Thailand were aligned and compared with multiple sequence isolates from Thailand and 6 other countries from the GenBank database. The genetic divergence of T. asiatica was also compared with Taenia saginata database sequences from 6 different countries in Asia, including Thailand, and 3 countries from other continents. The results showed that there were minor genetic variations within T. asiatica species, while high intraspecies variation was found in T. saginata. There were only 2 haplotypes and 1 polymorphic site found in T. asiatica, but 8 haplotypes and 9 polymorphic sites in T. saginata. Haplotype diversity was very low, 0.067, in T. asiatica and high, 0.700, in T. saginata. The very low genetic diversity suggested that T. asiatica may be at a risk due to the loss of potential adaptive alleles, resulting in reduced viability and decreased responses to environmental changes, which may endanger the species.

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Taenia asiatica: Mitochondrial signatures based analysis of an emerging public health threat in India
Aman D. Moudgil, Anil K. Nehra, Pallavi Moudgil
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Identification of species and genetic variation in Taenia isolates from human and swine of North India
Satyendra K. Singh, Kashi N. Prasad, Aloukick K. Singh, Kamlesh K. Gupta, Ranjeet S. Chauhan, Amrita Singh, Avinash Singh, Ravi P. Rai, Binod K. Pati
Parasitology Research.2016; 115(10): 3689. CrossRef
Epidemiology and genetic diversity of Taenia asiatica: a systematic review
Anita Ale, Bjorn Victor, Nicolas Praet, Sarah Gabriël, Niko Speybroeck, Pierre Dorny, Brecht Devleesschauwer
Parasites & Vectors.2014;[Epub] CrossRef
Current Status of Taeniasis in Thailand
Malinee Thairungroj Anantaphruti
The Korean Journal of Parasitology.2013; 51(1): 37. CrossRef

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Taenia asiatica: the Most Neglected Human Taenia and the Possibility of Cysticercosis: M. Teresa Gal?n-Puchades, Mario V. Fuentes; Korean J Parasitol 2013;51(1):51-54.
Published online February 18, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.1.51

Abstract
PDF

Not only Taenia solium and Taenia saginata, but also Taenia asiatica infects humans. The last species is not included in the evaluation of the specificity of the immunodiagnostic techniques for taeniasis/cysticercosis. There is currently no specific immunodiagnostic method for T. asiatica available. Therefore, due to the fact that molecular techniques (the only tool to distinguish the 3 Taenia species) are normally not employed in routine diagnostic methods, the 2 questions concerning T. asiatica (its definite geographic distribution and its ability to cause human cysticercosis), remain open, turning T. asiatica into the most neglected agent of human taeniasis-cysticercosis.

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State of the Art of Taenia solium as Compared to Taenia asiatica: Ana Flisser; Korean J Parasitol 2013;51(1):43-49.
Published online February 18, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.1.43

Abstract
PDF

Three species of tapeworms infect humans in their adult stage (Taenia solium, Taenia saginata and Taenia asiatica). The 3 are flat, opaque white or yellowish, and exceptional long segmented parasites, measuring 1 to 12 m in their adult stage. In this review, the development of the knowledge regarding the first species, mainly focused on understanding how the larval stage or cysticercus is transmitted to humans, is described. The second species is a cosmopolitan parasite that only causes taeniosis and not cysticercosis; therefore, it will not be included. Information on the third species, which is presently being produced, since this species was recognized as such only at the end of the 20th century, will be discussed at the end of this review.

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Current Status of Taeniasis in Thailand: Malinee Thairungroj Anantaphruti; Korean J Parasitol 2013;51(1):37-42.
Published online February 18, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.1.37

Abstract
PDF

Taeniasis is prevalent in all regions of Thailand, except the South. Infections were more frequently found in males than females of any age from 7-83 years. Taenia saginata is the most common species throughout the country. Taenia asiatica was reported only in the province of Kanchanaburi in the Central region. Co-infections, with Taenia solium and T. asiatica or T. solium and T. saginata, were found. Hybridization between T. asiatica and T. saginata is evidence that co-infection is never found between these 2 species. Finding more than 1 worm in a single patient was not entirely rare. Genetic variation was found without correlation to its geographic distribution in T. saginata, whereas no variation was found in T. asiatica.

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The Korean Journal of Parasitology.2013; 51(1): 37. CrossRef
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The Korean Journal of Parasitology.2013; 51(1): 55. CrossRef

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Historical Overview of Taenia asiatica in Taiwan: Hong Kean Ooi, Chau-Mei Ho, Wen-Cheng Chung; Korean J Parasitol 2013;51(1):31-36.
Published online February 18, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.1.31

Abstract
PDF

An overview of the epidemiological, biological, and clinical studies of Taenia and taeniasis in Taiwan for the past century is presented. The phenomenal observations that led to the discovery of Taenia asiatica as a new species, which differ from Taenia solium and Taenia saginata, are described. Parasitological surveys of the aborigines in Taiwan revealed a high prevalence of taeniasis, which might be due to the culture of eating raw liver of hunted wild boars. Chemotherapeutic deworming trials involving many patients with taeniasis were discussed. Praziquantel was found to be very effective, but sometimes complete worms could not be recovered from the feces after treatment, probably due to the dissolution of the proglottids. Atabrine, despite some side effects, can still be used, in properly controlled dosages, as the drug of choice for human T. asiatica infection if we need to recover the expelled worms for morphological examinations. Research results on the infection of T. asiatica eggs from Taiwan aborigines in experimental animals were also noted. Since the pig serve as the natural intermediate host of T. asiatica and the predilection site is the liver, a differential comparison of other parasitic pathogens that might cause apparently similar lesions is also presented.

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Current Status and Perspectives of Cysticercosis and Taeniasis in Japan: Hiroshi Yamasaki; Korean J Parasitol 2013;51(1):19-29.
Published online February 18, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.1.19

Abstract
PDF

This mini-review describes recent epidemiological trends in cysticercosis and taeniasis in Japan. Some of the topics discussed herein were presented at the first symposium on "Current perspectives of Taenia asiatica researches", that was held in Osong in Chungbuk Province, South Korea, in October 2011 and organized by Prof. K. S. Eom, Chungbuk National University School of Medicine. To better understand the trends in the occurrence of cysticercosis and taeniasis in Japan, clinical cases reported in 2005 have been updated. In addition, the current status of Taenia asiatica infections successively occurring in Japan since 2010 is also discussed.

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Taenia asiatica: Mitochondrial signatures based analysis of an emerging public health threat in India
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Phylogenetic characterization of the pork tapeworm Taenia solium in Japan: implications for the enigmatic evolutionary history
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Molecular Approaches to Taenia asiatica: Hyeong-Kyu Jeon, Keeseon S. Eom; Korean J Parasitol 2013;51(1):1-8.
Published online February 18, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.1.1

Abstract
PDF

Taenia solium, T. saginata, and T. asiatica are taeniid tapeworms that cause taeniasis in humans and cysticercosis in intermediate host animals. Taeniases remain an important public health concerns in the world. Molecular diagnostic methods using PCR assays have been developed for rapid and accurate detection of human infecting taeniid tapeworms, including the use of sequence-specific DNA probes, PCR-RFLP, and multiplex PCR. More recently, DNA diagnosis using PCR based on histopathological specimens such as 10% formalin-fixed paraffin-embedded and stained sections mounted on slides has been applied to cestode infections. The mitochondrial gene sequence is believed to be a very useful molecular marker for not only studying evolutionary relationships among distantly related taxa, but also for investigating the phylo-biogeography of closely related species. The complete sequence of the human Taenia tapeworms mitochondrial genomes were determined, and its organization and structure were compared to other human-tropic Taenia tapeworms for which complete mitochondrial sequence data were available. The multiplex PCR assay with the Ta4978F, Ts5058F, Tso7421F, and Rev7915 primers will be useful for differential diagnosis, molecular characterization, and epidemiological surveys of human Taenia tapeworms.

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Brief Communication

Discovery of Maritrema jebuensis n. sp. (Digenea: Microphallidae) from the Asian Shore Crab, Hemigrapsus sanguineus, in Korea: Ok-Sik Chung, Hye-Jung Lee, Woon-Mok Sohn, Seung-Ha Lee, Il-Yong Park, Sang-Ah Oh, Jong-Yil Chai, Min Seo; Korean J Parasitol 2010;48(4):335-338.
Published online December 16, 2010; DOI: https://doi.org/10.3347/kjp.2010.48.4.335

Abstract
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Maritrema spp. (Digenea: Microphallidae) are parasites of birds, but have not been found in the Republic of Korea. In this study, metacercariae of Maritrema sp. were discovered in the Asian shore crab, Hemigrapsus sanguineus, caught in the mud-flats of Jebu-do, Hwasung-gun, Gyeonggi-do, and the adult flukes were confirmed by experimental infection into mice. Based on the symmetric ribbon-like vitellarium, adult flukes of Maritrema sp. were identified, but did not belong to previously described species in terms of the following morphologic characteristics: ceca reaching to the lateral wall at the anterior border of the ovary; ventral sucker larger than oral sucker; a prominent metraterm; and vitellarium forming a complete ring. Hence, we named this microphallid M. jebuensis n. sp. after the island where the second intermediate hosts were collected. From this study, it has been shown that Maritrema sp. is distributed in Korea and transmitted by the Asian shore crab, H. sanguineus.

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Maritrema patagonican. sp. (Digenea: Microphallidae) cultured from Metacercariae from Freshwater Anomuran,Aeglaspp. (Decapoda: Aeglidae), in Patagonia
Carlos A. Rauque, Verónica R. Flores, Norma L. Brugni
Comparative Parasitology.2013; 80(2): 196. CrossRef
Discovery ofMaritrema obstipum(Digenea: Microphallidae) from Migratory Birds in Korea
Ok-Sik Chung, Woon-Mok Sohn, Jong-Yil Chai, Min Seo, Hye-Jung Lee
The Korean Journal of Parasitology.2011; 49(4): 457. CrossRef
Parasites of shore crabs in the genusHemigrapsus(Decapoda: Brachyura: Varunidae) and their status in crabs geographically displaced: a review
John J. McDermott
Journal of Natural History.2011; 45(39-40): 2419. CrossRef

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Original Article

Endosymbionts of Acanthamoeba Isolated from Domestic Tap Water in Korea: Seon Hee Choi, Min Kyoung Cho, Soon Cheol Ahn, Ji Eun Lee, Jong Soo Lee, Dong-Hee Kim, Ying-Hua Xuan, Yeon Chul Hong, Hyun Hee Kong, Dong Il Chung, Hak Sun Yu; Korean J Parasitol 2009;47(4):337-344.
Published online December 1, 2009; DOI: https://doi.org/10.3347/kjp.2009.47.4.337

Abstract
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In a previous study, we reported our discovery of Acanthamoeba contamination in domestic tap water; in that study, we determined that some Acanthamoeba strains harbor endosymbiotic bacteria, via our molecular characterization by mitochondrial DNA restriction fragment length polymorphism (Mt DNA RFLP). Five (29.4%) among 17 Acanthamoeba isolates contained endosymbionts in their cytoplasm, as demonstrated via orcein staining. In order to estimate their pathogenicity, we conducted a genetic characterization of the endosymbionts in Acanthamoeba isolated from domestic tap water via 16S rDNA sequencing. The endosymbionts of Acanthamoeba sp. KA/WP3 and KA/WP4 evidenced the highest level of similarity, at 97% of the recently published 16S rDNA sequence of the bacterium, Candidatus Amoebophilus asiaticus. The endosymbionts of Acanthamoeba sp. KA/WP8 and KA/WP12 shared a 97% sequence similarity with each other, and were also highly similar to Candidatus Odyssella thessalonicensis, a member of the α-proteobacteria. The endosymbiont of Acanthamoeba sp. KA/WP9 exhibits a high degree of similarity (85-95%) with genus Methylophilus, which is not yet known to harbor any endosymbionts. This is the first report, to the best of our knowledge, to show that Methylophilus spp. can live in the cytoplasm of Acanthamoeba.

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Mini Reviews

Geographical Distribution of Taenia asiatica and Related Species: Keeseon S. Eom, Hyeong-Kyu Jeon, Han-Jong Rim; Korean J Parasitol 2009;47(Suppl):S115.
Published online October 27, 2009; DOI: https://doi.org/10.3347/kjp.2009.47.S.S115

Abstract
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Geographical information of Taenia asiatica is reviewed together with that of T. solium and T. saginata. Current distribution of T. asiatica was found to be mostly from Asian countries: the Republic of Korea, China, Taiwan, Indonesia, and Thailand. Molecular genotypic techniques have found out more countries with T. asiatica from Japan, the Philippines, and Vietnam. Specimens used in this paper were collected from around the world and mostly during international collaboration projects of Korean foundations for parasite control activities (1995-2009) in developing countries.

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Foodborne Intestinal Flukes in Southeast Asia: Jong-Yil Chai, Eun-Hee Shin, Soon-Hyung Lee, Han-Jong Rim; Korean J Parasitol 2009;47(Suppl):S69.
Published online October 23, 2009; DOI: https://doi.org/10.3347/kjp.2009.47.S.S69

Abstract
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In Southeast Asia, a total of 59 species of foodborne intestinal flukes have been known to occur in humans. The largest group is the family Heterophyidae, which constitutes 22 species belonging to 9 genera (Centrocestus, Haplorchis, Heterophyes, Heterophyopsis, Metagonimus, Procerovum, Pygidiopsis, Stellantchasmus, and Stictodora). The next is the family Echinostomatidae, which includes 20 species in 8 genera (Artyfechinostomum, Acanthoparyphium, Echinochasmus, Echinoparyphium, Echinostoma, Episthmium, Euparyphium, and Hypoderaeum). The family Plagiorchiidae follows the next containing 5 species in 1 genus (Plagiorchis). The family Lecithodendriidae includes 3 species in 2 genera (Phaneropsolus and Prosthodendrium). In 9 other families, 1 species in 1 genus each is involved; Cathaemaciidae (Cathaemacia), Fasciolidae (Fasciolopsis), Gastrodiscidae (Gastrodiscoides), Gymnophallidae (Gymnophalloides), Microphallidae (Spelotrema), Neodiplostomidae (Neodiplostomum), Paramphistomatidae (Fischoederius), Psilostomidae (Psilorchis), and Strigeidae (Cotylurus). Various types of foods are sources of human infections. They include freshwater fish, brackish water fish, fresh water snails, brackish water snails (including the oyster), amphibians, terrestrial snakes, aquatic insects, and aquatic plants. The reservoir hosts include various species of mammals or birds.The host-parasite relationships have been studied in Metagonimus yokogawai, Echinostoma hortense, Fasciolopsis buski, Neodiplostomum seoulense, and Gymnophalloides seoi; however, the pathogenicity of each parasite species and host mucosal defense mechanisms are yet poorly understood. Clinical aspects of each parasite infection need more clarification. Differential diagnosis by fecal examination is difficult because of morphological similarity of eggs. Praziquantel is effective for most intestinal fluke infections. Continued efforts to understand epidemiological significance of intestinal fluke infections, with detection of further human cases, are required.

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Heliyon.2024; 10(9): e30059. CrossRef
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Foods.2024; 13(12): 1846. CrossRef
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Food and Waterborne Parasitology.2024; 36: e00236. CrossRef
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Parasitology Research.2024;[Epub] CrossRef
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Parasitology.2023; 150(4): 391. CrossRef
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Parasitology Research.2023; 122(10): 2325. CrossRef
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Frontiers in Microbiology.2023;[Epub] CrossRef
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Acta Parasitologica.2022; 67(1): 539. CrossRef
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Parasitology.2022; 149(10): 1319. CrossRef
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Veterinary Quarterly.2022; 42(1): 95. CrossRef
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Performance of Mini Parasep® SF stool concentrator kit, Kato-Katz, and formalin-ethyl acetate concentration methods for diagnosis of opisthorchiasis in Northeast Thailand
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Infectious Diseases of Poverty.2022;[Epub] CrossRef
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Zoonotic Diseases.2022; 2(4): 258. CrossRef
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Cercarial trematodes in freshwater snails from Bangkok, Thailand: prevalence, morphological and molecular studies and human parasite perspective
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The prevalence of cercarial infection and development of a duplex PCR for detection of the cercarial stage of Haplorchis taichui and H. pumilio in first intermediate hosts from Chai Nat province, Thailand
Chadaporn Dunghungzin, Thapana Chontananarth
Acta Tropica.2021; 214: 105795. CrossRef
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József Lehel, Rebecca Yaucat-Guendi, Lívia Darnay, Péter Palotás, Péter Laczay
Critical Reviews in Food Science and Nutrition.2021; 61(5): 867. CrossRef
Edible Insects and Toxoplasma gondii: Is It Something We Need To Be Concerned About?
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Journal of Food Protection.2021; 84(3): 437. CrossRef
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Journal of Microbiological Methods.2021; 187: 106258. CrossRef
Possibilities of the Development of Edible Insect-Based Foods in Europe
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Foods.2021; 10(4): 766. CrossRef
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Chemistry & Biodiversity.2021;[Epub] CrossRef
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Acta Parasitologica.2021; 66(4): 1251. CrossRef
Morpho-molecular identification of Heterophyes heterophyes encysted metacercariae and its immunological and histopathological effects on farmed Mugil cephalus in Egypt
Marwa M. Attia, Mamdouh Y. Elgendy, Mohamed Abdelsalam, Azza Hassan, Abdelbary Prince, Nagla M. K. Salaeh, Nehal A. Younis
Aquaculture International.2021; 29(3): 1393. CrossRef
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Anca-Daniela Cotuna-Coste, Maria Bodnari, Rebeca-Miruna Gherman, Corina-Mihaela Maniu, Carmen Panaitescu
Alergologia.2021; 1(5): 41. CrossRef
Morphology and Mitochondrial Genome of Fischoederius sp. 1 in Thailand
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The Korean Journal of Parasitology.2021; 59(4): 355. CrossRef
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Lilian Regina Barros Mariutti, Kemilla Sarmento Rebelo, Antonio Bisconsin-Junior, Janne Santos de Morais, Marciane Magnani, Iriani Rodrigues Maldonade, Nuno Rodrigo Madeira, Andrea Tiengo, Mário Roberto Maróstica, Cinthia Baú Betim Cazarin
Food Research International.2021; 149: 110709. CrossRef
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Journal of Future Foods.2021; 1(1): 38. CrossRef
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Acta Tropica.2020; 201: 105210. CrossRef
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NFS Journal.2020; 18: 1. CrossRef
Ancient Echinostome Eggs Discovered in Archaeological Strata Specimens from a Baekje Capital Ruins of South Korea
Min Seo, Sang-Yuck Shim, Hwa Young Lee, Yongjun Kim, Jong Ha Hong, Ji Eun Kim, Jong-Yil Chai, Dong Hoon Shin
Journal of Parasitology.2020; 106(1): 184. CrossRef
Mitochondrial Genome Sequence of Echinostoma revolutum from Red-Crowned Crane (Grus japonensis)
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The Korean Journal of Parasitology.2020; 58(1): 73. CrossRef
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Trends in Food Science & Technology.2020; 100: 35. CrossRef
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Veterinary Parasitology.2020; 282: 109135. CrossRef
Taxonomy of Echinostoma revolutum and 37-Collar-Spined Echinostoma spp.: A Historical Review
Jong-Yil Chai, Jaeeun Cho, Taehee Chang, Bong-Kwang Jung, Woon-Mok Sohn
The Korean Journal of Parasitology.2020; 58(4): 343. CrossRef
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The American Journal of Tropical Medicine and Hygiene.2020; 103(6): 2323. CrossRef
Survey of Stenomelania Fisher, 1885 (Cerithioidea, Thiaridae): The potential of trematode infections in a newly-recorded snail genus at the coast of Andaman Sea, South Thailand
Kitja Apiraksena, Suluck Namchote, Jirayus Komsuwan, Wivichuta Dechraksa, Kampanat Tharapoom, Nuanpan Veeravechsukij, Matthias Glaubrecht, Duangduen Krailas
Zoosystematics and Evolution.2020; 96(2): 807. CrossRef
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S. B. Chuyelov, A. L. Rossina
CHILDREN INFECTIONS.2020; 19(4): 38. CrossRef
Metagonimus yokogawai Ancient DNA Recovered from 16th- to 17th-Century Korean Mummy Feces of the Joseon Dynasty
Jong Ha Hong, Min Seo, Chang Seok Oh, Jong-Yil Chai, Dong Hoon Shin
Journal of Parasitology.2020;[Epub] CrossRef
A Critical Appraisal of the Evidence Supporting Consumer Motivations for Alternative Proteins
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Pura Yashung, Jaya Narah, Karsing Megu, Jharna Chakravorty
Dera Natung Government College Research Journal.2020; 5(1): 35. CrossRef
Postharvest processes of edible insects in Africa: A review of processing methods, and the implications for nutrition, safety and new products development
C. Mutungi, F. G. Irungu, J. Nduko, F. Mutua, H. Affognon, D. Nakimbugwe, S. Ekesi, K. K. M. Fiaboe
Critical Reviews in Food Science and Nutrition.2019; 59(2): 276. CrossRef
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James E. Bogan, Michael M. Garner, April Childress, James F.X. Wellehan
Journal of Exotic Pet Medicine.2019; 30: 72. CrossRef
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T.R. Murefu, L. Macheka, R. Musundire, F.A. Manditsera
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Ranjit Sah, Lucrecia Acosta, Rafael Toledo
Parasitology International.2019; 71: 56. CrossRef
An Autochthonous Human Case of Fasciolopsiasis in Nepal
Ranjit Sah, Michele Calatri, Rafael Toledo
The Korean Journal of Parasitology.2019; 57(3): 295. CrossRef
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Renewable Energy.2018; 115: 362. CrossRef
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Kittichai Chantima, Krittawit Suk-ueng, Mintra Kampan
The Korean Journal of Parasitology.2018; 56(3): 247. CrossRef
Food Safety Issues Related to Uses of Insects for Feeds and Foods
H. J. van der Fels‐Klerx, L. Camenzuli, S. Belluco, N. Meijer, A. Ricci
Comprehensive Reviews in Food Science and Food Safety.2018; 17(5): 1172. CrossRef
De novo genome and transcriptome analyses provide insights into the biology of the trematode human parasite Fasciolopsis buski
Devendra Kumar Biswal, Tanmoy Roychowdhury, Priyatama Pandey, Veena Tandon, Paulo Lee Ho
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Food safety aspect of insects: A review
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Acta Alimentaria.2018; 47(4): 513. CrossRef
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Novericko Ginger Budiono, Fadjar Satrija, Yusuf Ridwan, Defriska Nur, . Hasmawati
Jurnal Ilmu Pertanian Indonesia.2018; 23(2): 112. CrossRef
Human Intestinal Trematodiases in India: An Overview
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Parasitology International.2017; 66(1): 982. CrossRef
The ribosomal transcription units of Haplorchis pumilio and H. taichui and the use of 28S rDNA sequences for phylogenetic identification of common heterophyids in Vietnam
Thanh Hoa Le, Khue Thi Nguyen, Nga Thi Bich Nguyen, Huong Thi Thanh Doan, Do Trung Dung, David Blair
Parasites & Vectors.2017;[Epub] CrossRef
Metacercaria Infection Status of Fishborne Zoonotic Trematodes, Except for Clonorchis sinensis in Fish from the Heilongjiang Province, China
Jian-Hua Qiu, Ying Zhang, Xiao-Xuan Zhang, Yuan Gao, Qi Li, Qiao-Cheng Chang, Chun-Ren Wang
Foodborne Pathogens and Disease.2017; 14(8): 440. CrossRef
Discovery of Parasite Eggs in Archeological Residence during the 15th Century in Seoul, Korea
Pyo Yeon Cho, Jung-Min Park, Myeong-Ki Hwang, Seo Hye Park, Yun-Kyu Park, Bo-Young Jeon, Tong-Soo Kim, Hyeong-Woo Lee
The Korean Journal of Parasitology.2017; 55(3): 357. CrossRef
Artyfechinostomum malayanum: Metacercariae Encysted in Pila sp. Snails Purchased from Phnom Penh, Cambodia
Woon-Mok Sohn, Tai-Soon Yong, Keeseon S. Eom, Muth Sinuon, Hoo-Gn Jeoung, Jong-Yil Chai
The Korean Journal of Parasitology.2017; 55(3): 341. CrossRef
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Jong-Yil Chai, Bong-Kwang Jung
Food and Waterborne Parasitology.2017; 8-9: 33. CrossRef
Pygidiopsis cambodiensis n. sp. (Digenea: Heterophyidae) from experimental hamsters infected with metacercariae in mullets from Cambodia
Woon-Mok Sohn, Deok-Gyu Kim, Bong-Kwang Jung, Jaeeun Cho, Jong-Yil Chai
Parasitology Research.2016; 115(1): 123. CrossRef
A molecular phylogeny of Asian species of the genus Metagonimus (Digenea)—small intestinal flukes—based on representative Japanese populations
Siritavee Pornruseetairatn, Hideto Kino, Takeshi Shimazu, Yukifumi Nawa, Tomáš Scholz, Jiraporn Ruangsittichai, Naowarat Tanomsing Saralamba, Urusa Thaenkham
Parasitology Research.2016; 115(3): 1123. CrossRef
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Eun-Hee Shin, Tai-Kyun Im, Yun-Kyu Park, Jaeeun Cho, Jae-Lip Kim, Jong-Yil Chai
Parasitology Research.2016; 115(5): 2051. CrossRef
Animal Models for Echinostoma malayanum Infection: Worm Recovery and Some Pathology
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The Korean Journal of Parasitology.2016; 54(1): 47. CrossRef
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Alba Cortés, Javier Sotillo, Carla Muñoz-Antolí, María Trelis, J. Guillermo Esteban, Rafael Toledo
Parasites & Vectors.2016;[Epub] CrossRef
Malformations of the gill filaments of the ruffe Gymnocephalus cernuus (L.) (Pisces) caused by echinostomatid metacercariae
K Molnár, D I Gibson, G Majoros, C Székely, D Sándor, G Cech
Journal of Fish Diseases.2016; 39(11): 1357. CrossRef
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Simonetta Masala, Maria Cristina Piras, Daria Sanna, Jong-Yil Chai, Bong-Kwang Jung, Woon-Mok Sohn, Giovanni Garippa, Paolo Merella
Parasitology Research.2016; 115(9): 3409. CrossRef
Complete Mitochondrial Genome of Echinostoma hortense (Digenea: Echinostomatidae)
Ze-Xuan Liu, Yan Zhang, Yu-Ting Liu, Qiao-Cheng Chang, Xin Su, Xue Fu, Dong-Mei Yue, Yuan Gao, Chun-Ren Wang
The Korean Journal of Parasitology.2016; 54(2): 173. CrossRef
A complete mitochondrial genome from Echinochasmus japonicus supports the elevation of Echinochasminae Odhner, 1910 to family rank (Trematoda: Platyhelminthes)
Thanh Hoa Le, Nga Thi Bich Nguyen, Khue Thi Nguyen, Huong Thi Thanh Doan, Do Trung Dung, David Blair
Infection, Genetics and Evolution.2016; 45: 369. CrossRef
Transforming insect biomass into consumer wellness foods: A review
Dongxiao Sun-Waterhouse, Geoffrey I.N. Waterhouse, Lijun You, Jianan Zhang, Yang Liu, Lukai Ma, Jie Gao, Yi Dong
Food Research International.2016; 89: 129. CrossRef
Susceptibility, metacercarial burden, and mortality of juvenile silver barb, common carp, mrigal, and tilapia following exposure to Haplorchis taichui
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Parasitology Research.2015; 114(4): 1433. CrossRef
Potentially Zoonotic Helminthiases of Murid Rodents from the Indo-Chinese Peninsula: Impact of Habitat and the Risk of Human Infection
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Vector-Borne and Zoonotic Diseases.2015; 15(1): 73. CrossRef
High prevalence of large trematode eggs in schoolchildren in Cambodia
Philipp J. Bless, Fabian Schär, Virak Khieu, Stefanie Kramme, Sinuon Muth, Hanspeter Marti, Peter Odermatt
Acta Tropica.2015; 141: 295. CrossRef
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Brief Communication

Immunoblot Patterns of Taenia asiatica Taeniasis: Hyeong-Kyu Jeon, Keeseon S. Eom; Korean J Parasitol 2009;47(1):73-77.
Published online March 12, 2009; DOI: https://doi.org/10.3347/kjp.2009.47.1.73

Abstract
PDF

Differential diagnosis of Taenia asiatica infection from other human taeniases by serology has been tested. An enzyme-linked immunoelectrotransfer blot (EITB) was applied to subjected human sera and tapeworm materials. Thirty-eight proteins reactive to serum IgG were observed between 121 and 10 kDa in adult worms, and more than 22 serum-reactive components between 97 kDa and 21.5 kDa were observed in eggs of T. asiatica. Antigens of adult T. asiatica revealed immunoblot bands between 120 and 21.5 kDa against T. asiatica infected sera. Antigens of adult Taenia saginata revealed 110-100, 66, 58-56, and 46 kDa immunoblot bands against T. asiatica infected sera. Antigens of adult Taenia solium also revealed 99-97, 68-66, and 46 kDa bands against T. asiatica infected sera. The immunoblot band of 21.5 kDa exhibited specificity to T. asiatica.

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Parasitology Research.2017; 116(4): 1129. CrossRef
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M. A. Gómez-Morales, T. Gárate, J. Blocher, B. Devleesschauwer, G. S. A. Smit, V. Schmidt, M. J. Perteguer, A. Ludovisi, E. Pozio, P. Dorny, S. Gabriël, A. S. Winkler
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Comparison of a new multiplex real-time PCR with the Kato Katz thick smear and copro-antigen ELISA for the detection and differentiation of Taenia spp. in human stools
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M. Teresa Galán-Puchades, Mario V. Fuentes
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Dongmin Lee, Seongjun Choe, Hansol Park, Hyeong-Kyu Jeon, Jong-Yil Chai, Woon-Mok Sohn, Tai-Soon Yong, Duk-Young Min, Han-Jong Rim, Keeseon S. Eom
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Original Article

Sympatric Distribution of Three Human Taenia Tapeworms Collected between 1935 and 2005 in Korea: Hyeong-Kyu Jeon, Kyu-Heon Kim, Jong-Yil Chai, Hyun-Jong Yang, Han-Jong Rim, Keeseon S Eom; Korean J Parasitol 2008;46(4):235-241.
Published online December 20, 2008; DOI: https://doi.org/10.3347/kjp.2008.46.4.235

Abstract
PDF

Taeniasis has been known as one of the prevalent parasitic infections in Korea. Until recently, Taenia saginata had long been considered a dominant, and widely distributed species but epidemiological profiles of human Taenia species in Korea still remain unclear. In order to better understand distribution patterns of human Taenia tapeworms in Korea, partial nucleotide sequences of mitochondrial cox1 and ITS2 (internal transcribed spacer 2) were determined, along with morphological examinations, on 68 Taenia specimens obtained from university museum collections deposited since 1935. Genomic DNA was extracted from formalin-preserved specimens. Phylogenetic relationships among the genotypes (cox1 haplotype) detected in this study were inferred using the neighbor-joining method as a tree building method. Morphological and genetic analyses identified 3 specimens as T. solium, 51 specimens as T. asiatica, and 14 specimens as T. saginata. Our results indicate that all 3 Taenia tapeworms are sympatrically distributed in Korea with T. asiatica dominating over T. saginata and T. solium.

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Four Taeniasis saginata Cases Diagnosed at a University Hospital in Korea
Eun Jeong Won, Ju Hyeon Shin, Yu Jeong Lee, Moon-Ju Kim, Seung Ji Kang, Sook In Jung, Soo Hyun Kim, Jong Hee Shin, Jong-Yil Chai, Sung-Shik Shin
The Korean Journal of Parasitology.2019; 57(3): 313. CrossRef
Ten Cases of Taenia saginata Infection Confirmed by Analysis of the Internal Transcribed Spacer 1 rDNA Region in the Republic of Korea
Su-Min Song, Hae Soo Yun, Dorene VanBik, Hyun-Ha Chang, Sang-Ah Lee, Shin-Woo Kim, Namhee Ryoo, Dong Yeub Eun, Nan Young Lee, Youn-Kyoung Goo, Yeonchul Hong, Meesun Ock, Hee-Jae Cha, Dong-Il Chung
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Dong Hoon Shin, Jong-Yil Chai, Jong Ha Hong, Min Seo
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H. H. Garcia, S. Rodriguez, J. S. Friedland
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Four Cases of Taenia saginata Infection with an Analysis of COX1 Gene
Jaeeun Cho, Bong-Kwang Jung, Hyemi Lim, Min-Jae Kim, Thanapon Yooyen, Dongmin Lee, Keeseon S. Eom, Eun-Hee Shin, Jong-Yil Chai
The Korean Journal of Parasitology.2014; 52(1): 79. CrossRef
Evolution, molecular epidemiology and perspectives on the research of taeniid parasites with special emphasis on Taenia solium
Raúl J. Bobes, Gladis Fragoso, Agnès Fleury, Martín García-Varela, Edda Sciutto, Carlos Larralde, Juan P. Laclette
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María Teresa Galán-Puchades, Màrius V. Fuentes
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Anita Ale, Bjorn Victor, Nicolas Praet, Sarah Gabriël, Niko Speybroeck, Pierre Dorny, Brecht Devleesschauwer
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State of the Art of Taenia solium as Compared to Taenia asiatica
Ana Flisser
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M. Teresa Galán-Puchades, Mario V. Fuentes
The Korean Journal of Parasitology.2013; 51(1): 51. CrossRef
Molecular Approaches to Taenia asiatica
Hyeong-Kyu Jeon, Keeseon S. Eom
The Korean Journal of Parasitology.2013; 51(1): 1. CrossRef
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Mini Reviews

A review of Gymnophalloides seoi (Digenea: Gymnophallidae) and human infections in the Republic of Korea: Soon-Hyung Lee, Jong-Yil Chai; Korean J Parasitol 2001;39(2):85-118.
Published online June 30, 2002; DOI: https://doi.org/10.3347/kjp.2001.39.2.85

Abstract
PDF

Studies on Gymnophalloides seoi (Digenea: Gymnophallidae) and human infections are briefly reviewed. This minute intestinal fluke was first discovered from a Korean woman suffering from acute pancreatitis and gastrointestinal troubles. It was described as a new species by Lee, Chai and Hong in 1993. The southwestern coastal village where the patient resided was found to be a highly endemic area, and additional endemic areas have been identified. The parasite is very small, 0.33-0.50 mm long and 0.23-0.33 mm wide, and characterized by the presence of a ventral pit. The first intermediate host remains unknown, but the second intermediate host has been found to be the oyster Crassostrea gigas. Man and the Palearctic oystercatcher Haematopus ostralegus have been shown to be natural definitive hosts, and wading birds including the Kentish plover Charadrius alexandrinus are highly susceptible to experimental infection. Gerbils, hamsters, cats, and several strains of mice were also susceptible laboratory hosts. In experimentally infected mice, the parasites inhabit the small intestine, pinching and sucking the root of villi with their large oral suckers, but they did not invade beyond the mucosa in immunocompetent mice. However, they were found to invade the submucosa in immunosuppressed mice. Human G. seoi infections have been found in at least 25 localities; 23 islands on the Yellow Sea or the South Sea, and 2 western coastal villages. The highest prevalence was found in a village on Aphaedo, Shinan-gun (49% egg positive rate); other areas showed 0.8-25.3% prevalence. Infected people complained of variable degrees of gastrointestinal troubles and indigestion. The infection can be diagnosed by recovery of eggs in the feces; however, an expert is needed to identify the eggs. Praziquantel, 10 mg/kg in single dose, is effective for treatment of human infections. Eating raw oysters in endemic areas should be avoided.

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Epidemiological understanding of Taenia tapeworm infections with special reference to Taenia asiatica in Korea: Keeseon S. Eom, Han-Jong Rim; Korean J Parasitol 2001;39(4):267-283.
Published online December 31, 2001; DOI: https://doi.org/10.3347/kjp.2001.39.4.267

Abstract
PDF

In endemic areas of Taenia tapeworms in Korea, most of the reports showed that T. saginata was dominant over T. solium, but eating pigs is the dominant habit over eating cattle. Why do they have more T. saginata despite lower consumption of beef? This problem actually has long been recognized but until recently there has been no intensive trial to give a scientific explanation on this epidemiological enigma. By summing up the data published between the years 1963 and 1999, the ratio of armed versus unarmed tapeworms in humans was estimated at approximately 1:5. The ratio of pig-eaters versus cattle-eaters, however, was approximately 5:1. This inconsistency could be explained with the recently described T. asiatica, which infects humans through the eating of pig's viscera. We re-evaluate the importance of the consumption of visceral organ of pigs, leading us to an improved epidemiological understanding of the T. asiatica infection together with co-existing T. saginata and T. solium in Korea.

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Original Article

Intestinal histopathology and in situ postures of Gymnophalloides seoi in experimentally infected mice: Jong-Yil Chai, Hong-Soon Lee, Sung-Jong Hong, Jae Hyung Yoo, Sang-Mee Guk, Min Seo, Min-Ho Choi, Soon-Hyung Lee; Korean J Parasitol 2001;39(1):31-41.
Published online March 31, 2001; DOI: https://doi.org/10.3347/kjp.2001.39.1.31

Abstract
PDF

The intestinal histopathology and in situ postures of Gymnophalloides seoi (Digenea: Gymnophallidae) were studied using C3H/HeN and C57BL/6 mice as experimental hosts; the effects of immunosuppression were also observed. The metacercariae isolated from naturally infected oysters, 300 or 1,000 in number, were infected orally to each mouse, and the mice were killed at days 3-21 post-infection (PI). In immunocompetent (IC) mice, only a small number of flukes were found in the mucosa of the duodenum and jejunum during days 3-7 PI, with their large oral suckers pinching and sucking the root of villi. The intestinal mucosa showed mild villous atrophy, crypt hyperplasia, and inflammations in the villous stroma and crypt, with remarkable goblet cell hyperplasia. These mucosal changes were almost restored after days 14-21 PI. In immunosuppressed (IS) mice, displacement as well as complete loss of villi adjacent to the flukes was frequently encountered, otherwise the histopathology was generally mild, with minimal goblet cell hyperplasia. In these mice, numerous flukes were found, and it seemed that they were actively moving and rotating in situ. Several flukes were found to have invaded into the submucosa, almost facing the serosa. These results indicate that in IC mice the intestinal histopathology caused by G. seoi is generally mild, and the flukes do not penetrate beyond the mucosa, however, in IS mice, the flukes can cause severe destruction of neighboring villi, and some of them invade into the submucosa.

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Mini Review

The Asian Taenia and the possibility of cysticercosis: Maria Teresa Gal?n-Puchades, M?rius V. Fuentes; Korean J Parasitol 2000;38(1):1-7.
Published online March 31, 2000; DOI: https://doi.org/10.3347/kjp.2000.38.1.1

Abstract
PDF

In certain Asian countries, a third form of human Taenia, also known as the Asian Taenia, has been discovered. This Asian Taenia seems to be an intermediate between Taenia solium and T. saginata since in morphological terms it is similar to T. saginata, yet biologically, as it uses the same intermediate host (pigs), it is more akin to T. solium. Taenia solium causes human cysticercosis, while T. saginata does not. It is not known whether the Asian taeniid is able to develop to the larval stage in humans or not. The arguments proposed by those authors who consider it unlikely that the Asian Taenia causes human cysticercosis are: (a) its molecular similarities with T. saginata; (b) the absence of cases of human cysticercosis in populations where the Asian adult is highly prevalent; and (c) the unsupporting results derived from an experimental infestation study. These three arguments are debated, although bearing in mind that at present there is still no clear scientific data to support that human cysticercosis can be caused by the Asian Taenia.

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