Parasites, Hosts and Diseases

"development"

Original Articles

Development of Toxoplasma gondii Chinese I genotype Wh6 Strain in Cat Intestinal Epithelial Cells: Guihua Zhao, Lixin Zhang, Lisha Dai, Haozhi Xu, Chao Xu, Ting Xiao, Jun Li, Hui Sun, Beibei Zhou, Kun Yin; Korean J Parasitol 2022;60(4):241-246.
Published online August 24, 2022; DOI: https://doi.org/10.3347/kjp.2022.60.4.241

Felids are the unique definitive host of Toxoplasma gondii. The intestine of felid is the only site for initiating Toxoplasma gondii sexual reproduction. T. gondii excretes millions of infectious oocysts from the intestine, which are the primary source of infection. There are many difficulties in developing vaccines and drugs to control oocyst excretion due to the lack of an appropriate experimental model. Here, we established an in vitro feline intestinal epithelial cell (IEC) infection system and an efficient animal model of T. gondii Chinese 1 genotype, Wh6 strain (TgCtwh6). The Kunming mice brain tissues containing TgCtwh6 cysts were harvested 42-day post-infection. The bradyzoites were co-cultured with cat IECs in vitro at a ratio of 1:10. Five 3-month-old domestic cats were orally inoculated with 600 cysts each. The oocysts were detected by daily observation of cat feces by microscopy and polymerase chain reaction. We found that the parasite adhered and invaded cat IECs in vitro, transformed into tachyzoites, and then divided to form rose-like structures. These parasites eventually destroyed host cells, escaped, and finished the asexual reproduction process. Schizonts associated with sexual reproduction have not been observed during development in vitro cultured cells. However, schizonts were detected in all infected cat intestinal epithelial cells, and oocysts were presented in all cat feces. Our study provides a feasible cell model and an efficient infection system for the following studies of T. gondii sexual reproduction, and also lays a foundation to develop drugs and vaccines for blocking excretion and transmission of oocysts.

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Detection and genotyping of Toxoplasma gondii oocysts in environmental samples in Gaza, Palestine: A combined parasitological and molecular approach
Zuhair Dardona, Adnan Al Hindi, Mohamed Hafidi, Ali Boumezzough, Fadel Sharif, Samia Boussaa
One Health Bulletin.2025;[Epub] CrossRef
The development and excretion of Toxoplasma gondii oocyst manipulate the gut microbiota in its definitive host
Gui-Hua Zhao, Bei-Bei Zhou, Zhi-Heng Cao, Ting Xiao, Ya-Nan Li, Wen-Ju Zhu, Hang Sun, Huan-Huan Xie, Xiao-Man Xie, Jun-Mei Zhang, Qi Wang, Xin Zhang, Jin-Jing Xie, Hong-Jie Dong, Chao Xu, Kun Yin
Parasites & Vectors.2025;[Epub] CrossRef
Toxoplasma gondii alters gut microbiota and systemic metabolism in cats: A multi-omics approach
Ji-Xin Zhao, Xue-Yao Wang, Xuancheng Zhang, Lu-Yao Tang, Shi-Chen Xie, Yi-Han Lv, Zhi Zheng, Ying-Qian Gao, Jing Jiang, Xiao-Xuan Zhang, He Ma
The Veterinary Journal.2025; 314: 106455. CrossRef
Proteomics analysis of Toxoplasma gondii merozoites reveals regulatory proteins involved in sexual reproduction
Guihua Zhao, Hongjie Dong, Lisha Dai, Huanhuan Xie, Hang Sun, Junmei Zhang, Qi Wang, Chao Xu, Kun Yin
Microbial Pathogenesis.2024; 186: 106484. CrossRef

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Spatiotemporal Trends of Malaria in Relation to Economic Development and Cross-Border Movement along the China?Myanmar Border in Yunnan Province: Xiaotao Zhao, Weerapong Thanapongtharm, Siam Lawawirojwong, Chun Wei, Yerong Tang, Yaowu Zhou, Xiaodong Sun, Jestumon Sattabongkot, Jaranit Kaewkungwal; Korean J Parasitol 2020;58(3):267-278.
Published online June 26, 2020; DOI: https://doi.org/10.3347/kjp.2020.58.3.267

Abstract
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The heterogeneity and complexity of malaria involves political and natural environments, socioeconomic development, cross-border movement, and vector biology; factors that cannot be changed in a short time. This study aimed to assess the impact of economic growth and cross-border movement, toward elimination of malaria in Yunnan Province during its pre-elimination phase. Malaria data during 2011-2016 were extracted from 18 counties of Yunnan and from 7 villages, 11 displaced person camps of the Kachin Special Region II of Myanmar. Data of per-capita gross domestic product (GDP) were obtained from Yunnan Bureau of Statistics. Data were analyzed and mapped to determine spatiotemporal heterogeneity at county and village levels. There were a total 2,117 malaria cases with 85.2% imported cases; most imported cases came from Myanmar (78.5%). Along the demarcation line, malaria incidence rates in villages/camps in Myanmar were significantly higher than those of the neighboring villages in China. The spatial and temporal trends suggested that increasing per-capita GDP may have an indirect effect on the reduction of malaria cases when observed at macro level; however, malaria persists owing to complex, multi-faceted factors including poverty at individual level and cross-border movement of the workforce. In moving toward malaria elimination, despite economic growth, cooperative efforts with neighboring countries are critical to interrupt local transmission and prevent reintroduction of malaria via imported cases. Cross-border workers should be educated in preventive measures through effective behavior change communication, and investment is needed in active surveillance systems and novel diagnostic and treatment services during the elimination phase.

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Molecular epidemiology of Clostridioides difficile in border areas of Yunnan Province suggests possible transmission routes of the strains
Wenpeng Gu, Jiao Gong, Junrong Liang, Xiaofang Zhou, Lulu Bai, Wenzhu Zhang, Senquan Jia, Yongming Zhou, Xiaoqing Fu, Yuan Wu
Infection, Genetics and Evolution.2025; 136: 105860. CrossRef
Understanding the impact of mobility on Plasmodium spp. carriage in an Amazon cross-border area with low transmission rate
Hélène Tréhard, Lise Musset, Yassamine Lazrek, Felix Djossou, Loïc Epelboin, Emmanuel Roux, Jordi Landier, Jean Gaudart, Emilie Mosnier, André Machado Siqueira
PLOS Global Public Health.2024; 4(2): e0002706. CrossRef
Malaria epidemiology, surveillance and response for elimination in Lao PDR
Chawarat Rotejanaprasert, Vilayvone Malaphone, Mayfong Mayxay, Keobouphaphone Chindavongsa, Virasack Banouvong, Boualam Khamlome, Phoutnalong Vilay, Viengxay Vanisavaeth, Richard J Maude
Infectious Diseases of Poverty.2024;[Epub] CrossRef
A time-series meta-transcriptomic analysis reveals the seasonal, host, and gender structure of mosquito viromes
Yun Feng, Qin-yu Gou, Wei-hong Yang, Wei-chen Wu, Juan Wang, Edward C Holmes, Guodong Liang, Mang Shi
Virus Evolution.2022;[Epub] CrossRef
Governance Quality, Public Health, Education, and Innovation: Study for Novel Implications
Ning Wu
Frontiers in Public Health.2022;[Epub] CrossRef
Effectiveness of indoor residual spraying on malaria control: a systematic review and meta-analysis
Yiguo Zhou, Wan-Xue Zhang, Elijah Tembo, Ming-Zhu Xie, Shan-Shan Zhang, Xin-Rui Wang, Ting-Ting Wei, Xin Feng, Yi-Lin Zhang, Juan Du, Ya-Qiong Liu, Xuan Zhang, Fuqiang Cui, Qing-Bin Lu
Infectious Diseases of Poverty.2022;[Epub] CrossRef
Risk factors associated with malaria infection along China–Myanmar border: a case–control study
Jian-Wei Xu, Dao-Wei Deng, Chun Wei, Xing-Wu Zhou, Jian-Xiong Li
Malaria Journal.2022;[Epub] CrossRef
Malaria Research for Tailored Control and Elimination Strategies in the Greater Mekong Subregion
Jetsumon Sattabongkot, Liwang Cui, Sirasate Bantuchai, Sadudee Chotirat, Jaranit Kaewkungwal, Amnat Khamsiriwatchara, Kirakorn Kiattibutr, Myat Phone Kyaw, Saranath Lawpoolsri, Nay Yi Yi Linn, Lynette Menezes, Jun Miao, Wang Nguitragool, Daniel Parker, Pa
The American Journal of Tropical Medicine and Hygiene.2022; 107(4_Suppl): 152. CrossRef
The economic burden of malaria inpatients and its determinants during China's elimination stage
Fangfei Chen, Xiaoyu Chen, Peng Gu, Xiaodong Sang, Ruijun Wu, Miaomiao Tian, Yisheng Ye, Chengxu Long, Ghose Bishwajit, Lu Ji, Da Feng, Lei Yang, Shangfeng Tang
Frontiers in Public Health.2022;[Epub] CrossRef
From control to elimination: a spatial-temporal analysis of malaria along the China-Myanmar border
Fang Huang, Li Zhang, Jing-Bo Xue, Hong-Ning Zhou, Aung Thi, Jun Zhang, Shui-Sen Zhou, Zhi-Gui Xia, Xiao-Nong Zhou
Infectious Diseases of Poverty.2020;[Epub] CrossRef

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Life Cycle of Dermacentor everestianus Hirst, 1926 (Acari: Ixodidae) under Laboratory Conditions: Shang Jin, Tianhong Wang, Tuo Li, Ming Liu, Qingying Jia, Xiaolong Yang, Hui Wang, Zhijun Yu, Jingze Liu; Korean J Parasitol 2017;55(2):193-196.
Published online April 30, 2017; DOI: https://doi.org/10.3347/kjp.2017.55.2.193

Abstract
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This study investigated the development characteristics of Dermacentor everestianus under laboratory conditions. The time taken for D. everestianus to complete the whole life cycle was 110.2 days on average, and the average developmental durations of larvae and nymphs were 17.1 days and 29.5 days, respectively. The summation of the prefeeding, feeding, and preoviposition periods of females was 17.8 days, and the oviposition and egg incubation lasted for 18.1 days and 27.7 days, respectively. A highly positive correlation was observed between the weight of engorged female and the number of egg mass laid (r=0.947). The reproductive efficiency index and the reproductive fitness index were 7.1 and 6.1, respectively.

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Establishment of Pathogen-Free Rhipicephalus bursa Colonies Under Laboratory Conditions for the Vector Competence Studies
Mehmet Can Ulucesme, Sezayi Ozubek, Munir Aktas
Veterinary Sciences.2025; 12(1): 54. CrossRef
The life cycle of Dermacentor nuttalli from the Qinghai-Tibetan Plateau under laboratory conditions and detection of spotted fever group Rickettsia spp.
Hejia Ma, Jingkai Ai, Ming Kang, Jixu Li, Yali Sun
Frontiers in Veterinary Science.2023;[Epub] CrossRef
The life cycle and development characteristics of Dermacentor everestianus (Acari: Ixodidae) under field conditions in Qinghai–Tibet Plateau
Tuo Li, Ming Liu, Tian-Tian Zhang, Yuan Li, Wen-Ying Wang, Meng-Meng Li, Zhi-Jun Yu, Jing-Ze Liu
Experimental and Applied Acarology.2018; 76(4): 513. CrossRef

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Brief Communication

Effects of Disinfectants on Larval Development of Ascaris suum Eggs: Ki-Seok Oh, Geon-Tae Kim, Kyu-Sung Ahn, Sung-Shik Shin; Korean J Parasitol 2016;54(1):103-107.
Published online February 26, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.1.103

Abstract
PDF

The
objective
of this study was to evaluate the effects of several different commercial disinfectants on the embryogenic development of Ascaris suum eggs. A 1-ml aliquot of each disinfectant was mixed with approximately 40,000 decorticated or intact A. suum eggs in sterile tubes. After each treatment time (at 0.5, 1, 5, 10, 30, and 60 min), disinfectants were washed away, and egg suspensions were incubated at 25˚C in distilled water for development of larvae inside. At 3 weeks of incubation after exposure, ethanol, methanol, and chlorohexidin treatments did not affect the larval development of A. suum eggs, regardless of their concentration and treatment time. Among disinfectants tested in this study, 3% cresol, 0.2% sodium hypochlorite and 0.02% sodium hypochlorite delayed but not inactivated the embryonation of decorticated eggs at 3 weeks of incubation, because at 6 weeks of incubation, undeveloped eggs completed embryonation regardless of exposure time, except for 10% povidone iodine. When the albumin layer of A. suum eggs remained intact, however, even the 10% povidone iodine solution took at least 5 min to reasonably inactivate most eggs, but never completely kill them with even 60 min of exposure. This study demonstrated that the treatment of A. suum eggs with many commercially available disinfectants does not affect the embryonation. Although some disinfectants may delay or stop the embryonation of A. suum eggs, they can hardly kill them completely.

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Flora Kafunda, Arnaud Blanchet, Gaylord A. Desurmont
Insects.2025; 16(12): 1213. CrossRef
Evaluation of the efficacy of disinfectants and disinfection methods against Ascaris suum eggs
Ruisi Zhang, Maolin Lu, Hongyan Yu, Tianlu Liu, Zhiying Cui, Yuling Yang, Mengchao Zhou, Yaxian Lu, Hang Tian, Lihong Tian, Lei Han, Zhijun Hou
Veterinary Parasitology.2024; 332: 110333. CrossRef
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V. Yevstafieva, M. Petrenko, R. Peleno, O. Nikiforova, V. Vakulenko, O. Reshetylo, M. Kone
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V. Yevstafieva, O. Dolhin, V. Melnychuk, A. Dedukhno, M. Pishchalenko, O. Krasota
Regulatory Mechanisms in Biosystems.2023; 14(4): 559. CrossRef
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A. Khorolskyi
Ukrainian Journal of Veterinary and Agricultural Sciences.2022; 5(1): 53. CrossRef
The Effects of Allium sativum L., Artemisia absinthium L., Cucurbita pepo L., Coriandrum sativum L., Satureja hortensis L. and Calendula officinalis L. on the Embryogenesis of Ascaris suum Eggs during an In Vitro Experimental Study
Mihai-Horia Băieş, Călin Gherman, Zsolt Boros, Diana Olah, Ana-Maria Vlase, Anamaria Cozma-Petruț, Adriana Györke, Doina Miere, Laurian Vlase, Gianina Crișan, Marina Spînu, Vasile Cozma
Pathogens.2022; 11(9): 1065. CrossRef
Diagnostic and treatment technologies for detection and removal of helminth in wastewater and sludge
Saswat Mahapatra, Md. Hibzur Ali, Kundan Samal, Sanjib Moulick
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Inactivating Effects of Common Laboratory Disinfectants, Fixatives, and Temperatures on the Eggs of Soil Transmitted Helminths
Kristine J. Kines, Mark Fox, MacKevin Ndubuisi, Guilherme G. Verocai, Vitaliano Cama, Richard S. Bradbury, Anat Florentin
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A.L. Ursache, V. Mircean, M. Dumitrache, S. Andrei, L. Ştefănuţ, V. Cozma, R. Cătană, M. Cernea
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Irma Robles, Emmanuel Becerra, J.A. Barrios, C. Maya, B. Jiménez, Francisco J. Rodríguez-Valadez, Fernando Rivera, Josué D. García-Espinoza, Luis A. Godínez
Chemosphere.2020; 250: 126260. CrossRef
Efficacy of a chlorocresol-based disinfectant product on Toxocara canis eggs
Senzhao Zhang, Christiana Angel, Xiaobin Gu, Yunjian Liu, Yingxin Li, Lu Wang, Xuan Zhou, Ran He, Xuerong Peng, Guangyou Yang, Yue Xie
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Filipe Dantas-Torres, Jennifer Ketzis, Andrei D. Mihalca, Gad Baneth, Domenico Otranto, Gabriela Perez Tort, Malaika Watanabe, Bui Khanh Linh, Tawin Inpankaew, Pablo D. Jimenez Castro, Pablo Borrás, Sangaran Arumugam, Barend L. Penzhorn, Adrian Patalinghu
Veterinary Parasitology.2020; 283: 109167. CrossRef
Deactivation of Ascaris suum eggs using electroporation and sequential inactivation with chemical disinfection
C. Niven, C. B. Parker, S. D. Wolter, M. H. Dryzer, C. B. Arena, B. R. Stoner, E. Ngaboyamahina
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Aida Romera Barbera, Darwin Hertzel, Karl J. Reinhard
Journal of Archaeological Science: Reports.2020; 33: 102522. CrossRef
The impact of certain flavourings and preservatives on the survivability of eggs of Ascaris suum and Trichuris suis
O. O. Boyko, V. V. Brygadyrenko
Regulatory Mechanisms in Biosystems.2020; 11(2): 344. CrossRef
The impact of certain flavourings and preservatives on the survivability of eggs of Ascaris suum and Trichuris suis
O. O. Boyko, V. V. Brygadyrenko
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Study of disinvasive properties of innovative aldehyde disinfectant
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Mohamed Bessat, Amira Dewair, Raffi V. Aroian
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Viability of Pseudocapillaria tomentosa Eggs Exposed to Heat, Ultraviolet Light, Chlorine, Iodine, and Desiccation
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Amy J. Pickering, Sammy M. Njenga, Lauren Steinbaum, Jenna Swarthout, Audrie Lin, Benjamin F. Arnold, Christine P. Stewart, Holly N. Dentz, MaryAnne Mureithi, Benard Chieng, Marlene Wolfe, Ryan Mahoney, Jimmy Kihara, Kendra Byrd, Gouthami Rao, Theodora Me
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Kh.M. El-Dakhly, A.S.M. Aboshinaf, W.M. Arafa, L.N. Mahrous, E. El-Nahass, A.F. Gharib, P.J. Holman, T.M. Craig
Journal of Helminthology.2018; 92(5): 530. CrossRef
Effects of In Vivo and In Vitro Treatment ofAscaris suumEggs with Anthelmintic Agents on Embryonation and Infectivity for Mice
Jianguo Zhao, Qian Han, Chenghong Liao, Jinhua Wang, Lili Wu, Qun Liu, David S. Lindsay
Journal of Parasitology.2017; 103(5): 598. CrossRef

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Original Article

Developmental and Phylogenetic Characteristics of Stellantchasmus falcatus (Trematoda: Heterophyidae) from Thailand: Pralongyut Sripalwit, Chalobol Wongsawad, Thapana Chontananarth, Somboon Anuntalabhochai, Pheravut Wongsawad, Jong-Yil Chai; Korean J Parasitol 2015;53(2):201-207.
Published online April 22, 2015; DOI: https://doi.org/10.3347/kjp.2015.53.2.201

Abstract
PDF

This study aimed to investigate the infection status, worm development, and phylogenetic characteristics of the intestinal trematode, Stellantchasmus falcatus. The metacercariae of S. falcatus were detected only in the half-beak (Dermogenus pusillus) out of the 4 fish species examined. Their prevalence was 90.0%, and the intensity of infection was 919 metacercariae on average. Worms were recovered from 33 (97.1%) of 34 chicks that were experimentally infected with 200 S. falcatus metacercariae each, and the average recovery rate was 43.0%. The body size and inner organs of S. falcatus quickly increased in the experimental chicks over days 1-2 post-infection (PI). In addition, ITS2 sequence data of this parasite were analyzed to examine the phylogenetic relationships with other trematodes using the UPGMA method. The results indicated that the ITS2 sequence data recorded from trematodes in the family Heterophyidae appeared to be monophyletic. This study concluded that D. pusillus serves as a compatible second intermediate host of S. falcatus in Thailand and that S. falcatus can develop rapidly in the experimental chicks. Data collected from this study can help to close the gap in knowledge regarding the epidemiology, biology, and phylogenetic characteristics of S. falcatus in Thailand.

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Seasonal dynamics and molecular phylogenetic studies on cercariae in Central Zone of Kashmir valley
Zahoor Ahmad Wani, Rafiq A. Shahardar, Kamal H. Bulbul, Idrees M. Allaie, Showkat A. Shah, Shabir A. Rather, Aiman Ashraf, Shahana Tramboo, Asif H. Khan, Shawky M Aboelhadid
PLOS One.2025; 20(7): e0325160. CrossRef
Alterations in histopathology and stress-associated gene expression induced by infection with Prohemistomum vivax encysted metacercariae in Nile tilapia
Shimaa Abdelkhalek, Marwa M. Attia, Marwa A. Ibrahim, Reda M. S. Korany, Mohamed Abdelsalam, Dalia A. Abdel-moneam
Aquaculture International.2024; 32(4): 5107. CrossRef
Epidemiology of rumen fluke infection in selected buffalo farms in perak, malaysia: prevalence, molecular species identification, and associated risk factors
Nazir Ahmad Tookhy, Nur-Mahiza Md Isa, Yasmin Abd Rahaman, Nur Indah Ahmad, Reuben Sunil Kumar Sharma, Lokman Hakim Idris, Rozaihan Mansor, Dung Thi Bui, Noor Hazfalinda Hamzah, Shoaib Ahmad Shakhes
Parasitology Research.2024;[Epub] CrossRef
Morphological and molecular identification of lymnaeid snail and trematodes cercariae in different water bodies in Perak, Malaysia
Nazir Ahmad Tookhy, Nur Mahiza Md Isa, Rozaihan Mansor, Yasmin Abd Rahaman, Nur Indah Ahmad, Dung Thi Bui, Lokman Hakim Idris, Noor Hazfalinda Hamzah, Norhadila Zulkifli
Parasitology Research.2023; 122(7): 1475. CrossRef
Molecular identification of trematode parasites infecting the freshwater snail Bithynia siamensis goniomphalos in Thailand
O. Pitaksakulrat, P. Sithithaworn, K.Y. Kopolrat, N. Kiatsopit, W. Saijuntha, R.H. Andrews, T.N. Petney, D. Blair
Journal of Helminthology.2022;[Epub] CrossRef
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Maureen Duflot, Thomas Setbon, Graziella Midelet, Thomas Brauge, Mélanie Gay
Journal of Microbiological Methods.2021; 187: 106258. CrossRef
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Laddawan Patarwut, Thapana Chontananarth, Jong-Yil Chai, Watchariya Purivirojkul
The Korean Journal of Parasitology.2020; 58(1): 27. CrossRef
Morphological and Molecular Identification of Stellantchasmus dermogenysi n. sp. (Digenea: Heterophyidae) in Thailand
Chalobol Wongsawad, Nattawadee Nantarat, Pheravut Wongsawad, Preeyaporn Butboonchoo, Jong-Yil Chai
The Korean Journal of Parasitology.2019; 57(3): 257. CrossRef
Multiplex PCR assay for discrimination of Centrocestus caninus and Stellantchasmus falcatus
Thapana Chontananarth
Asian Pacific Journal of Tropical Biomedicine.2017; 7(2): 103. CrossRef
Phylogenetic analysis reveals cryptic species diversity within minute intestinal fluke, Stellantchasmus falcatus Onji and Nishio, 1916 (Trematoda, Heterophyidae)
Chalobol Wongsawad, Nattawadee Nantarat, Pheravut Wongsawad
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Jong-Yil Chai, Bong-Kwang Jung
Food and Waterborne Parasitology.2017; 8-9: 33. CrossRef
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Brief Communication

Effects of Some Pesticides on Development of Ascaris suum Eggs: Yong-Man Yu, Jin-Won Kim, Won-Seok Na, Young-Nam Youn, In-Wook Choi, Young-Ha Lee; Korean J Parasitol 2014;52(1):111-115.
Published online February 19, 2014; DOI: https://doi.org/10.3347/kjp.2014.52.1.111

Abstract
PDF

To evaluate the effects of pesticides to parasite eggs, Ascaris suum eggs were incubated with 5 different pesticides (1:1,500-1:2,000 dilutions of 2% emamectin benzoate, 5% spinetoram, 5% indoxacarb, 1% deltamethrin, and 5% flufenoxuron; all v/v) at 20℃ for 6 weeks, and microscopically evaluated the egg survival and development on a weekly basis. The survival rate of A. suum eggs incubated in normal saline (control eggs) was 90±3% at 6 weeks. However, the survival rates of eggs treated with pesticides were 75-85% at this time, thus significantly lower than the control value. Larval development in control eggs commenced at 3 weeks, and 73±3% of eggs had internal larvae at 6 weeks. Larvae were evident in pesticide-treated eggs at 3-4 weeks, and the proportions of eggs carrying larvae at 6 weeks (36±3%-54±3%) were significantly lower than that of the control group. Thus, pesticides tested at levels similar to those used in agricultural practices exhibited low-level ovicidal activity and delayed embryogenesis of A. suum eggs, although some differences were evident among the tested pesticides.

Citations

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Investigating cement-based surfaces as a sustainable flooring solution to improve Ascaris Suum egg removal and inactivation in low-resource settings
Claire E. Anderson, Suhi Hanif, Jason Hernandez, Yoshika Crider, Michael Lepech, Sarah L. Billington, Alexandria B. Boehm, Jade Benjamin-Chung, Vito Colella,
PLOS Neglected Tropical Diseases.2025; 19(10): e0012919. CrossRef
Emamectin benzoate exposure impaired porcine oocyte maturation
Xin Wang, Mengya Zhang, Danruo Zhang, Yelian Yan, Qiuchen Liu, Changzhi Xu, Zhihua Zhu, Sucheng Wu, Yanfeng Zong, Zubing Cao, Yunhai Zhang
Theriogenology.2023; 206: 123. CrossRef
Study of disinvasive properties of innovative aldehyde disinfectant
A. P. Paliy, N. V. Sumakova, A. M. Mashkey, V. V. Gontar, A. P. Palii, D. A. Yurchenko
Journal for Veterinary Medicine, Biotechnology and Biosafety.2020; 6(2): 32. CrossRef
Assessment of the inhibitory effects of disinfectants on the embryonation of Ascaridia columbae eggs
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Original Article

Extraintestinal Migration of Centrorhynchus sp. (Acanthocephala: Centrorhynchidae) in Experimentally Infected Rats: Chang-Jin Choi, Hye-Jung Lee, Jai-Hyang Go, Yun-Kyu Park, Jong-Yil Chai, Min Seo; Korean J Parasitol 2010;48(2):139-143.
Published online June 17, 2010; DOI: https://doi.org/10.3347/kjp.2010.48.2.139

Abstract
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Reptiles were known to serve as paratenic hosts for Centrorhynchus (Acanthocephala: Centrorhynchidae) in Korea, but the infection course in experimental animals was not elucidated yet. In this study, the tiger keelback snakes (Rhabdophis tigrinus) were collected and digested with artificial pepsin solution, and the larvae of Centrorhynchus were recovered from them. Then, the collected larvae were orally infected to rats for developmental observations. In rats, all the larvae were observed outside the intestine on day 3 post-infection (PI), including the mesentery and abdominal muscles. As for the development in rats, the ovary of Centrorhynchus sp. was observed at day 15 PI, and the cement glands were 3 in number. Based on the morphological characteristics, including the arrangement of proboscis hooks, these larvae proved to be a species of Centrorhynchus, and more studies were needed for species identification.

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E. B. Hastürk, S. Birlik, Ç. Ilgaz, A. G. Korkmaz, K. Candan, E. Yıldırım Caynak, Y. Kumlutaş
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PLOS ONE.2020; 15(6): e0232973. CrossRef
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Holger Herlyn, Horst Taraschewski
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Holger Herlyn
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The helminth fauna of Apathya cappadocica (Werner, 1902) (Anatolian Lizard) (Squamata: Lacertidae) from Turkey
S. Birlik, H. S. Yildirimhan, N. Sümer, Ç. Ilgaz, Kumlutaş, Ö. Güçlü, S. H. Durmuş
Helminthologia.2015; 52(4): 310. CrossRef

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Brief Communication

Differential expression of the 27 kDa cathepsin L-like cysteine protease in developmental stages of Spirometra erinacei: Yoon Kong, Doo-Hee Yun, Seung-Yull Cho, Woon-Mok Sohn, Young-Bae Chung, Shin-Yong Kang; Korean J Parasitol 2000;38(3):195-199.
Published online September 30, 2000; DOI: https://doi.org/10.3347/kjp.2000.38.3.195

Abstract
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The 27 kDa cathepsin L-like cysteine protease of Spirometra erinacei plerocercoid is known to play an important function in tissue penetration, nutrient uptake and immune modulation in human sparganosis. In the present study, the expression of this enzyme was examined at different developmental stages of S. erinacei including immature egg, coracidium, plerocercoid in tadpole and rat, and adult. Proteolytic activity against carboxybenzoyl-phenylalanyl-arginyl-7-amino-4-methylcoumarin was detected in the extracts of coracidia and plerocercoid while no activity was observed in those of immature egg and adult. The specific activity in coracidial extracts was lower than that in the plerocercoid. Reverse transcription-polymerase chain reaction and Northern blot analysis demonstrated that the gene was expressed in the coracidium and plerocercoid but not in immature egg and adult. These results suggest that the 27 kDa cysteine protease is only expressed in the stages involving active migration of the parasite in the host tissue.

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Jialing Hu, Kaili Liao, Xiaojin Feng, Danling Jiang, Hailin Liu, Qingcui Zheng, Hai Qiu, Fuzhou Hua, Guohai Xu, Chunhua Xu
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Follow-up study of high-dose praziquantel therapy for cerebral sparganosis
Peng Zhang, Yang Zou, Feng-Xia Yu, Zheng Wang, Han Lv, Xue-Huan Liu, He-Yu Ding, Ting-Ting Zhang, Peng-Fei Zhao, Hong-Xia Yin, Zheng-Han Yang, Zhen-Chang Wang, Siddhartha Mahanty
PLOS Neglected Tropical Diseases.2019; 13(1): e0007018. CrossRef
A cysteine protease from Spirometra erinaceieuropaei plerocercoid is a critical factor for host tissue invasion and migration
Daigo Tsubokawa, Takeshi Hatta, Hiroki Maeda, Fusako Mikami, Yukinobu Goso, Takeshi Nakamura, M. Abdul Alim, Naotoshi Tsuji
Acta Tropica.2017; 167: 99. CrossRef
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Li Na Liu, Zhong Quan Wang, Xi Zhang, Peng Jiang, Xin Qi, Ruo Dan Liu, Zi Fang Zhang, Jing Cui, Xiao-Nong Zhou
PLOS Neglected Tropical Diseases.2015; 9(6): e0003807. CrossRef
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Min Kyoung Cho, Keun Hee Lee, Sun Joo Lee, Se Won Kang, Mee Sun Ock, Yeon Chul Hong, Yong Seok Lee, Hak Sun Yu
Veterinary Parasitology.2009; 164(2-4): 242. CrossRef
Comparison of carbohydrate moieties of sparganum proteins of the snake, mouse and those of adult worm
Hyun Jong Yang
The Korean Journal of Parasitology.2003; 41(2): 135. CrossRef

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Original Articles

Growth and development of Gymnophalloides seoi in immunocompetent and immunosuppressed C3H/HeN mice: Jong-Yil Chai, Won-Jae Chung, Jina Kook, Min Seo, Yun-Kyu Park, Sang-Mee Guk, Min-Ho Choi, Soon-Hyung Lee; Korean J Parasitol 1999;37(1):21-26.
Published online March 31, 1999; DOI: https://doi.org/10.3347/kjp.1999.37.1.21

Abstract
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The growth and development of Gymnophalloides seoi were studied in C3H/HeN mice and effects of immunosuppression of the host on the worm development were observed. Two hundred metacercariae of G. seoi were orally administered to each mouse, and worms were recovered on days 1, 3, 5, 7, 14 and 21 post-infection (PI). The worm recovery rate was significantly higher in immunosuppressed (ImSP) mice than in immunocompetent (ImCT) mice except on days 1 and 3 PI. The worms attained sexual maturity by day 3 PI with eggs in the uterus, and worm dimensions and the number of uterine eggs continuously increased until day 14 PI in ImSP mice. Worms recovered from ImSP mice were significantly larger in size than those from ImCT mice on days 1 and 3 PI, and the number of uterine eggs was significantly larger in ImSP mice on days 5 and 7 PI. Genital organs such as the ovary, testes, and vitellaria, that were already developed in the metacercarial stage, grew a little in size until day 14 PI. The results show that the C3H/HeN mouse is, though not excellent, a suitable laboratory host for G. seoi.

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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
Foodborne Intestinal Flukes in Southeast Asia
Jong-Yil Chai, Eun-Hee Shin, Soon-Hyung Lee, Han-Jong Rim
The Korean Journal of Parasitology.2009; 47(Suppl): S69. CrossRef
Gymnophalloides seoi: a new human intestinal trematode
Jong-Yil Chai, Min-Ho Choi, Jae-Ran Yu, Soon-Hyung Lee
Trends in Parasitology.2003; 19(3): 109. CrossRef
Food-borne intestinal trematode infections in the Republic of Korea
Jong-Yil Chai, Soon-Hyung Lee
Parasitology International.2002; 51(2): 129. CrossRef
A review of Gymnophalloides seoi (Digenea: Gymnophallidae) and human infections in the Republic of Korea
Soon-Hyung Lee, Jong-Yil Chai
The Korean Journal of Parasitology.2001; 39(2): 85. CrossRef
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
The Korean Journal of Parasitology.2001; 39(1): 31. CrossRef

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Effects of in vitro culture methods on morphological development and infectivity of Strongyloides venezuelensis filariform larvae: M. Khyrul Islam, Kiku Matsuda, Jin-Ho Kim, Byeong-Kirl Baek; Korean J Parasitol 1999;37(1):13-19.
Published online March 31, 1999; DOI: https://doi.org/10.3347/kjp.1999.37.1.13

Abstract
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The effects of in vitro culture methods on morphological development and infectivity of Strongyloides venezuelensis filariform larvae (L₃) to rats were investigated. A significantly higher body length was observed in L₃ from filter paper culture (597.3 ± 32.2 ?m) than those in fecal (509.9 ± 35.0 ?m) and nutrient broth culture (503.3 ± 31.0 ?m) (P<0.05). Larval infectivity was assessed by exposing rats to 1,000 L₃ from each culture and worms were recovered from the lungs and small intestines. Recovery rate of these worms did not show any significant difference. A significantly greater body length of adults was recorded in those corresponding to the L₃ harvested from filter paper (2,777.5 ± 204.4 ?m) and nutrient broth culture (2,732.5 ± 169.8 ?m) than those corresponding to the L₃ obtained from fecal culture (2,600.5 ± 172.4 ?m) (P<0.05). Although worm fecundity and EPG counts differed among culture methods but worm burdens and course of infection did not. These findings suggest that the methods of cultures have a significant effect on the morphological development of the larvae to the L₃ stage, but do not influence the infectivity to rats.

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Venestatin from parasitic helminths interferes with receptor for advanced glycation end products (RAGE)-mediated immune responses to promote larval migration
Daigo Tsubokawa, Taisei Kikuchi, Jae Man Lee, Takahiro Kusakabe, Yasuhiko Yamamoto, Haruhiko Maruyama, James B. Lok
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MARK VINEY, TAISEI KIKUCHI
Parasitology.2017; 144(3): 285. CrossRef
Venestatin, a Ca ++ -binding protein from the parasitic nematode Strongyloides venezuelensis , is involved in the larval migration process
Daigo Tsubokawa, Takeshi Hatta, Taisei Kikuchi, Hiroki Maeda, Fusako Mikami, M. Abdul Alim, Haruhiko Maruyama, Naotoshi Tsuji
International Journal for Parasitology.2017; 47(8): 501. CrossRef
Viability of Strongyloides venezuelensis eggs and larvae in vermiculite containing the fungus Duddingtonia flagrans
Laryssa Pinheiro Costa Silva, Carolina Magri Ferraz, Anderson Rocha Aguiar, Jackson Victor Araújo, Steveen Rios Ribeiro, Débora Goldner Rossi, Luanderson Queiroz Mendes, Fausto Edmundo Lima Pereira, Narcisa Imaculada Brant Moreira, Fabio Ribeiro Braga
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Development of free-living stages of Strongyloides ratti under different temperature conditions
Maki Sakamoto, Shoji Uga
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Eiji Nagayasu, Yoshitoshi Ogura, Takehiko Itoh, Ayako Yoshida, Gunimala Chakraborty, Tetsuya Hayashi, Haruhiko Maruyama
Parasitology International.2013; 62(1): 57. CrossRef
Characterization of the protective response against a homologous challenge infection with Strongyloides venezuelensis in rats
B.K Baek, M.K Islam, B.S Kim, C.W Lim, J Hur, A.O Oluoch, C.H Kim, I Kakoma
Veterinary Parasitology.2003; 113(3-4): 217. CrossRef
Persistent infection with Strongyloides venezuelensis in the Mongolian gerbil (Meriones unguiculatus)
Byeong-Kirl Baek, In-Soo Whang, M. Khyrul Islam, Byeong-Soo Kim, Ibulaimu Kakoma
The Korean Journal of Parasitology.2002; 40(4): 181. CrossRef
Partial cross-resistance between Strongyloides venezuelensis and Nippostrongylus brasiliensis in rats
Byeong-Kirl Baek, M. Khyrul Islam, Jin-Ho Kim, John-Wha Lee, Jin Hur
The Korean Journal of Parasitology.1999; 37(2): 101. CrossRef

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Surface ultrastructure of Metagonimus miyatai metacercariae and adults: Jong-Yil Chai, Young-Je Kang, Sung-Yil Choi, Sang-Mee Guk, Jae-Ran Yu, Soon-Hyung Lee; Korean J Parasitol 1998;36(4):217-225.
Published online December 20, 1998; DOI: https://doi.org/10.3347/kjp.1998.36.4.217

Abstract
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A scanning electron microscopic study was performed to observe surface ultrastructures of excysted metacercariae and adults of Metagonimus miyatai. Metacercariae were collected from the scale of the pale chub (Zacco platypus), and adult flukes were harvested 1-4 weeks after infection to rats. In excysted metacercariae, the oral sucker was devoid of tegumental spines and had type I and type II sensory papillae. Anteriorly to the ventral sucker, spines were dense and digitated into 5-7 points, whereas near the posterior end of the body spines were sparse and digitated into 2-3 points. In one-week adults, 7 type II sensory papillae were arranged around the lip of the oral sucker, and at inner side of the lip one pair of small and two pairs of large type 1 sensory papillae were seen on each side. The distribution of tegumental spines was similar to that of metacercariae, but they were more differentiated with 9-11 pointed tips. In two- to four-week old adults, the surface ultrastructure was nearly the same as in one-week old adults, however, sperms were frequently seen entering into the Laurer's canal. Conclusively, the surface ultrastructure of M. miyatai was generally similar to that of M. yokogawai, however, differentiation of tegumental spines and distribution of sensory papillae around the oral sucker were different between the two species, which may be of taxonomic significance.

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S. G. Abd El-Kareem, M. H. Ibraheem
Helminthologia.2021; 58(2): 188. CrossRef
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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
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Jean-José Filippi, Yann Quilichini, Bernard Marchand
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Jean‐José Filippi, Yann Quilichini, Joséphine Foata, Bernard Marchand
Journal of Morphology.2012; 273(4): 361. CrossRef
Tegumental Ultrastructure of Adult Gynaecotyla squatarolae (Digenea: Microphallidae)
Do-Seon Lim, Ki-Ju Choi, Sang-Mee Guk, Jong-Yil Chai, Il-Yong Park, Yun-Kyu Park, Min Seo
The Korean Journal of Parasitology.2008; 46(2): 87. CrossRef
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Mohammed Hasan Ibraheem
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Susana Balmant Emerique Simões, Tomáš Scholz, Helene Santos Barbosa, Cláudia Portes Santos
Journal of Parasitology.2006; 92(3): 501. CrossRef
Sequence comparisons of 28S ribosomal DNA and mitochondrial cytochrome c oxidase subunit I of Metagonimus yokogawai, M. takahashii and M. miyatai
Soo-Ung Lee, Sun Huh, Woon-Mok Sohn, Jong-Yil Chai
The Korean Journal of Parasitology.2004; 42(3): 129. CrossRef
Surface ultrastructure of the adult stage of Acanthotrema felis (Trematoda: Heterophyidae)
Woon-Mok Sohn, Min Seo, Jong-Yil Chai
The Korean Journal of Parasitology.2003; 41(2): 107. CrossRef
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Jong-Yil Chai, Woon-Mok Sohn, Sung-Yil Choi, Soon-Hyung Lee
The Korean Journal of Parasitology.2002; 40(3): 107. CrossRef
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Infection kinetics and developmental biology of Cryptosporidium muris (strain MCR) in Korean native kids and Corriedale lambs: Jae Ku Rhee, Hyeon Cheol Kim, Gil Soo Eun; Korean J Parasitol 1998;36(3):171-181.
Published online September 30, 1998; DOI: https://doi.org/10.3347/kjp.1998.36.3.171

Abstract
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A total of nine Korean native kids and two Corriedale lambs, 1-20 days old, were each inoculated per os with a single dose of 2 × 10⁷ oocysts of Cryptosporidium muris (strain MCR) originated from mice to elucidate the kinetics and developmental stages of the coccidium in small ruminants. Irrespective of host's age, the prepatent period for both animals ranged from 19 to 35 days (28.1 days, on the average) and the patent period 16-85 days (47.8 days), and the total oocyst outputs showed enormous differences. Infection with greater numbers of oocyst outputs was not ordinarily established by transmission experiments. Oocysts discharged from the kids retained their infectivity by the mouse titration method. The immunogenicity of the coccidium and oocyst reproduction were proven by challenge infection and administration of prednisolone acetate, respectively. All the developmental stages of the coccidium in parasitophorous vacuoles were found by transmission electron microscopy in the pits of the gastric glands of a kid inoculated with oocysts and then necropsied on day 44 postinoculation. It indicated the full course of the host-parasite relationship in kids and lambs as well as mice.

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