Parasites, Hosts and Diseases

"Aifen Lin"

Brief Communication

Evaluation of the Korean Isolate-1 Tachyzoite Antigen for Serodiagnosis of Toxoplasmosis: Eun-Hee Shin, Dong-Hee Kim, Aifen Lin, Jo-Woon-Yi Lee, Hyo-Jin Kim, Myoung-Hee Ahn, Jong-Yil Chai; Korean J Parasitol 2008;46(1):45-48.
Published online March 20, 2008; DOI: https://doi.org/10.3347/kjp.2008.46.1.45

Abstract
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To evaluate the usefulness of the Korean Isolate-1 (KI-1) antigen for serodiagnosis of toxoplasmosis, antigen profiles of KI-1 tachyzoites were analyzed in comparison with RH tachyzoites by SDS-PAGE and immunoblotting. ELISA was performed on latex agglutination (LA)-positive and negative serum samples using KI-1 and RH antigens. Immunoblotting of the KI-1 antigen showed multiple antigen bands with molecular sizes of 22-105 kDa. Among them, 1 and 6 common bands were noted against a KI-1-infected and a RH-infected human serum, respectively, which represented differences in antigenic profiles between KI-1 and RH tachyzoites. However, all 9 LA-positive human sera were found positive by ELISA, and all 12 LA-negative sera were negative by ELISA; the correlation between the ELISA titers and LA titers was high (r = 0.749). Our results suggest that tachyzoites of KI-1 may be useful for serodiagnosis of human toxoplasmosis.

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Resistance toToxoplasma gondiiInfection in Mice Treated with Silk Protein by Enhanced Immune Responses
Joung-Ho Moon, Kyoung-Ho Pyo, Bong-Kwang Jung, Hyang Sook Chun, Jong-Yil Chai, Eun-Hee Shin
The Korean Journal of Parasitology.2011; 49(3): 303. CrossRef

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Original Articles

Prevalence of Gymnophalloides seoi infection in coastal villages of Haenam-gun and Yeongam-gun, Republic of Korea: Sang-Mee Guk, Jae-Hwan Park, Eun-Hee Shin, Jae-Lip Kim, Aifen Lin, Jong-Yil Chai; Korean J Parasitol 2006;44(1):1-5.
Published online March 20, 2006; DOI: https://doi.org/10.3347/kjp.2006.44.1.1

Abstract
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One coastal village in Haenam-gun and two in Yeongam-gun, Jeollanam-do were surveyed for intestinal parasite infections by fecal examination. The egg positive rates of Gymnophalloides seoi were high, 24.1% (14/58) in Haenam-gun and 9.3% (11/118) in Yeongam-gun. The egg positive rates of heterophyids, including Heterophyes nocens, and of Clonorchis sinensis were 10.3% and 6.9% in Haenam-gun, and 14.4% and 8.5% in Yeongam-gun, respectively. After praziquantel treatment and purgation, a total of 37,761 fluke specimens were recovered from 17 patients; 11 in Haenam-gun and 6 in Yeongam-gun. Gymnophalloides seoi was the most commonly recovered species, with 37,489 specimens in total (2,205 per person). Other recovered flukes included Heterophyes nocens, Stictodora fuscata, Heterophyopsis continua, Pygidiopsis summa, and undetermined species. These results indicate that the areas surveyed are new endemic foci of G. seoi.

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High sensitivity detection of Clonorchis sinensis and Gymnophalloides seoi in food by new real-time gene amplification method
Min Ji Hong, Mi-Gyeong Kim, Doo Won Seo, Hyun Mi Jung, Hyun-Ja Han, Seung Hwan Kim, Insun Joo
Food Science and Biotechnology.2025; 34(14): 3417. CrossRef
A potential zoonotic parasite, the digenean Gymnophalloides nacellae, on the Magellanic coast in the Southwestern Atlantic Ocean: its life cycle and geographical distribution
Carmen Gilardoni, Gisele Di Giorgio, Estefanía Bagnato, Susana Pina, Pedro Rodrigues, Florencia Cremonte
Polar Biology.2020; 43(6): 725. CrossRef
Survey of Gymnophalloides seoi Metacercariae in Natural and Cultured Oysters from Several Western Coastal Areas, Korea
Taehee Chang, Bong-Kwang Jung, Hyemi Song, Jaeeun Cho, Sooji Hong, Keon-Hoon Lee, Eui-Hyug Hoang, Jisu Kang, Jini Lim, Hana Lee, Jong-Yil Chai
The Korean Journal of Parasitology.2019; 57(6): 705. CrossRef
Fishborne zoonotic heterophyid infections: An update
Jong-Yil Chai, Bong-Kwang Jung
Food and Waterborne Parasitology.2017; 8-9: 33. CrossRef
Pygidiopsis summa (Digenea: Heterophyidae): Status of Metacercarial Infection in Mullets from Coastal Areas in the Republic of Korea
Woon-Mok Sohn, Byoung-Kuk Na, Shin-Hyeong Cho, Won-Ja Lee, Mi-Yeoun Park, Soon-Won Lee, Seung-Bong Choi, Beom-Nyung Huh, Won-Seok Seok
The Korean Journal of Parasitology.2016; 54(4): 497. CrossRef
Multiplex Real-Time PCR Assay Targeting Eight Parasites Customized to the Korean Population: Potential Use for Detection in Diarrheal Stool Samples from Gastroenteritis Patients
Eun Jeong Won, Soo Hyun Kim, Seung Jung Kee, Jong Hee Shin, Soon Pal Suh, Jong Yil Chai, Dong Wook Ryang, Myung Geun Shin, Mark Spigelman
PLOS ONE.2016; 11(11): e0166957. CrossRef
Recovery of Oswaldotrema nacinovici from Whimbrels (Aves) in Korea
Young-Il Lee, Ok-Sik Chung, Min Seo
The Korean Journal of Parasitology.2016; 54(6): 809. 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
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
Trends in parasitic diseases in the Republic of Korea
Eun-Hee Shin, Sang-Mee Guk, Hyo-Jin Kim, Soon-Hyung Lee, Jong-Yil Chai
Trends in Parasitology.2008; 24(3): 143. CrossRef
A new endemic focus of Heterophyes nocens and other heterophyid infections in a coastal area of Gangjin-gun, Jeollanam-do
Jae-Hwan Park, Jae-Lip Kim, Eun-Hee Shin, Sang-Mee Guk, Yun-Kyu Park, Jong-Yil Chai
The Korean Journal of Parasitology.2007; 45(1): 33. CrossRef

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Genetic characteristics of the Korean isolate KI-1 of Toxoplasma gondii: Aifen Lin, Eun-Hee Shin, Tae-Yun Kim, Jae-Hwan Park, Sang-Mee Guk, Jong-Yil Chai; Korean J Parasitol 2005;43(1):27-32.
Published online March 20, 2005; DOI: https://doi.org/10.3347/kjp.2005.43.1.27

Abstract
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Toxoplasma gondii tachyzoites were isolated from an ocular patient in the Republic of Korea and maintained in the laboratory (designated KI-1). In the present study, its genotype was determined by analyzing dense granule antigen 6 (GRA6) gene and surface antigen 2 (SAG2) gene as typing markers. Digestion of the amplification products of GRA6 and of the 5' and 3' ends of SAG2, respectively, with Mse I, Sau3A I, and Hha I, revealed that KI-1 is included in the genotype I, which includes the worldwide virulent RH strain. In addition, when the whole sequences of the coding regions of SAG1, rhoptry antigen 1 (ROP1), and GRA8 genes of KI-1 were compared with those of RH, minor nucleotide polymorphisms and amino acid substitutions were identified. These results show that KI-1 is a new geographical strain of T. gondii that can be included in the genotype I.

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Geographical distribution of Toxoplasma gondii genotypes in Asia: A link with neighboring continents
P. Chaichan, A. Mercier, L. Galal, A. Mahittikorn, F. Ariey, S. Morand, F. Boumédiène, R. Udonsom, A. Hamidovic, J.B. Murat, Y. Sukthana, M.L. Dardé
Infection, Genetics and Evolution.2017; 53: 227. CrossRef
<i>Toxoplasma gondii</i> B1 Gene Detection in Feces of Stray Cats around Seoul, Korea and Genotype Analysis of Two Laboratory-Passaged Isolates
Bong-Kwang Jung, Sang-Eun Lee, Hyemi Lim, Jaeeun Cho, Deok-Gyu Kim, Hyemi Song, Min-Jae Kim, Eun-Hee Shin, Jong-Yil Chai
The Korean Journal of Parasitology.2015; 53(3): 259. CrossRef
Genetic characterization of Toxoplasma gondii isolates from chickens in India by GRA6 gene sequence analysis
Shantaveer Biradar, Buddhi Saravanan, Anup Tewari, Chirukandoth Sreekumar, Muthu Sankar, Naduvanahalli Sudhakar
Acta Parasitologica.2014;[Epub] CrossRef
Selective and strain-specific NFAT4 activation by the Toxoplasma gondii polymorphic dense granule protein GRA6
Ji Su Ma, Miwa Sasai, Jun Ohshima, Youngae Lee, Hironori Bando, Kiyoshi Takeda, Masahiro Yamamoto
Journal of Experimental Medicine.2014; 211(10): 2013. CrossRef
Immune Responses of Mice Intraduodenally Infected withToxoplasma gondiiKI-1 Tachyzoites
Eun-Hee Shin, Yeoun Sook Chun, Won-Hee Kim, Jae-Lip Kim, Kyoung-Ho Pyo, Jong-Yil Chai
The Korean Journal of Parasitology.2011; 49(2): 115. CrossRef
Proteomic Analysis ofToxoplasma gondiiKI-1 Tachyzoites
Si-Hwan Choi, Tae Yun Kim, Sung Goo Park, Guang-Ho Cha, Dae-Whan Shin, Jong-Yil Chai, Young-Ha Lee
The Korean Journal of Parasitology.2010; 48(3): 195. CrossRef
Suppression of CD4+T-Cells in the Spleen of Mice Infected withToxoplasma gondiiKI-1 Tachyzoites
Won-Hee Kim, Eun-Hee Shin, Jae-Lip Kim, Seung-Young Yu, Bong-Kwang Jung, Jong-Yil Chai
The Korean Journal of Parasitology.2010; 48(4): 325. CrossRef
Selection of Polymorphic Peptides from GRA6 and GRA7 Sequences of Toxoplasma gondii Strains To Be Used in Serotyping
Susana Sousa, Daniel Ajzenberg, Maggy Marle, Dominique Aubert, Isabelle Villena, José Correia da Costa, Marie-Laure Dardé
Clinical and Vaccine Immunology.2009; 16(8): 1158. CrossRef
Genotyping of a Korean isolate of Toxoplasma gondii by multilocus PCR-RFLP and microsatellite analysis
Juan-Hua Quan, Tae Yun Kim, In-Uk Choi, Young-Ha Lee
The Korean Journal of Parasitology.2008; 46(2): 105. CrossRef
Evaluation of the Korean Isolate-1 Tachyzoite Antigen for Serodiagnosis of Toxoplasmosis
Eun-Hee Shin, Dong-Hee Kim, Aifen Lin, Jo-Woon-Yi Lee, Hyo-Jin Kim, Myoung-Hee Ahn, Jong-Yil Chai
The Korean Journal of Parasitology.2008; 46(1): 45. CrossRef
Trends in parasitic diseases in the Republic of Korea
Eun-Hee Shin, Sang-Mee Guk, Hyo-Jin Kim, Soon-Hyung Lee, Jong-Yil Chai
Trends in Parasitology.2008; 24(3): 143. CrossRef
Use of GRA6-Derived Synthetic Polymorphic Peptides in an Immunoenzymatic Assay To Serotype Toxoplasma gondii in Human Serum Samples Collected from Three Continents
Susana Sousa, Daniel Ajzenberg, Manuel Vilanova, José Costa, Marie-Laure Dardé
Clinical and Vaccine Immunology.2008; 15(9): 1380. CrossRef

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Brief Communication

Clonorchis sinensis metacercarial infection in the pond smelt Hypomesus olidus and the minnow Zacco platypus collected from the Soyang and Daechung Lakes: Jae-Hwan Park, Sang-Mee Guk, Tae-Yun Kim, Eun-Hee Shin, Aifen Lin, Ji-Yeon Park, Jae-Lip Kim, Sung-Tae Hong, Jong-Yil Chai; Korean J Parasitol 2004;42(1):41-44.
Published online March 20, 2004; DOI: https://doi.org/10.3347/kjp.2004.42.1.41

Abstract
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The pond smelt Hypomesus olidus and minnow Zacco platypus were collected from the Soyang and Daechung Lakes in January 2003, and their metacercarial infections was examined by the muscle compression and artificial digestion techniques. In the Soyang Lake, 161 metacercariae of Clonorchis sinensis (0.35 per fish) were harvested from 459 pond smelts examined. Also, 13 metacercariae of C. sinensis (0.43 per fish), 1 of Metagonimus sp., 4 of Echinostoma sp., 148 of Centrocestus armatus and 44 unidentified species were collected from 30 minnows. In the Daechung Lake, 369 metacercariae of C. sinensis (3.69 per fish) and 51 unidentified species were recovered from 100 pond smelts. The metacercariae of C. sinensis were fed to experimental rats, in which the adult flukes were identified. The pond smelts and minnows collected from the Soyang and Daechung Lakes were verified to be the second intermediate hosts and the sources of human C. sinensis infection.

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The Korean Journal of Parasitology.2008; 46(4): 247. CrossRef
Infection status of pond smelts, Hypomesus olidus, and other freshwater fishes with trematode metacercariae in 6 large lakes
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Original Article

Laboratory passage and characterization of an isolate of Toxoplasma gondii from an ocular patient in Korea: Jong-Yil Chai, Aifen Lin, Eun-Hee Shin, Myoung-Don Oh, Eun-Taek Han, Ho-Woo Nam, Soon-Hyung Lee; Korean J Parasitol 2003;41(3):147-154.
Published online September 20, 2003; DOI: https://doi.org/10.3347/kjp.2003.41.3.147

Abstract
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Toxoplasma gondii tachyzoites were isolated from the blood of an ocular patient, and have been successfully passaged in the laboratory, for over a year, by peritoneal inoculation in mice. The isolated parasite was designated the Korean Isolate-1 (KI-1) and its characteristics were compared with those of the RH strain, a well-known virulent strain originating from a child who suffered from encephalitis. The morphology, pathogenicity, infectivity and cell culture characteristics of the KI-1 were similar to those of the RH strain. Both RH and KI-1 antigens were detected by an anti-T. gondii monoclonal antibody (mAb), Tg563, against the major surface protein SAG1 (30 kDa), whereas no reaction was observed against an anti-Neospora caninum mAb, 12B4. The KI-1 was confirmed as an isolate of T. gondii. A long-term laboratory maintenance and characterization of a local T. gondii isolate is reported for the first time in the Republic of Korea.

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