Parasites, Hosts and Diseases

"Sung-Yil Choi"

Original Article

Comparative Morphology of Minute Intestinal Fluke Eggs That Can Occur in Human Stools in the Republic of Korea: Jin-Joo Lee, Bong-Kwang Jung, Hyemi Lim, Mi Youn Lee, Sung-Yil Choi, Eun-Hee Shin, Jong-Yil Chai; Korean J Parasitol 2012;50(3):207-213.
Published online August 13, 2012; DOI: https://doi.org/10.3347/kjp.2012.50.3.207

Abstract
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The egg morphology of minute intestinal flukes (MIF) that can occur as human infections in the Republic of Korea, i.e., Metagonimus yokogawai, M. miyatai, M. takahashii, Heterophyes nocens, Heterophyopsis continua, Stellantchasmus falcatus, Stictodora fuscata, Pygidiopsis summa, and Gymnophalloides seoi, was studied in comparison with Clonorchis sinensis. The adult worms were obtained from residents of endemic areas, and their intrauterine eggs were studied and measured using light microscopy; the length, width, length-width ratio (LWR), and Faust-Meleney index (FMI). Several specimens were processed for scanning electron microscopy (SEM), and before gold-coating, the uterine portion of each fluke was etched with a sharp pin in order to expose the eggs. The MIF eggs were ovoid, pyriform, or elliptical with a size range of 21-35×12-21 ?m. S. fuscata eggs revealed the highest FMI (largest in the area) and lowest LWR, whereas P. summa eggs showed the lowest FMI and medium LWR. SEM revealed that G. seoi and S. fuscata had remarkably clean shell surface lacking the muskmelon-like structure which is prominent in C. sinensis eggs. In Metagonimus spp., H. continua, H. nocens, and S. falcatus eggs, minute surface ridges were recognizable though less prominent compared with C. sinensis. On the surface of P. summa eggs, thread-like curly structures were characteristically seen. The results revealed that important differential keys for MIF eggs include the length, width, area (FMI), shape of the eggs, and the extent of the muskmelon-like structure or ridges on their shell surface and operculum.

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Fishborne zoonotic heterophyid infections: An update
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Jong-Yil Chai, Bong-Kwang Jung, Deok-Gyu Kim, Jae-Lip Kim, Hyemi Lim, Eun-Hee Shin, Keon Hoon Lee, Mok Ryeon Kim, Sun Jin Han, Jae Hyun Yeom, Sun Mi Park, Jae-Sun Hwang
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PLoS ONE.2014; 9(12): e113208. CrossRef

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Brief Communication

A survey of Brugia malayi infection on the Heugsan Islands, Korea: Jong-Yil Chai, Soon-Hyung Lee, Sung-Yil Choi, Jong-Soo Lee, Tai-Soon Yong, Kyun-Jong Park, Kyeong-Ae Yang, Keon-Hoon Lee, Mi-Jeng Park, Hyung-Ran Park, Mi-Ja Kim, Han-Jong Rim; Korean J Parasitol 2003;41(1):69-73.
Published online March 20, 2003; DOI: https://doi.org/10.3347/kjp.2003.41.1.69

Abstract
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Lymphatic filariasis due to Brugia malayi infection was endemic in several areas of South Korea. The infection was controlled, or disappeared, in most areas, with the exception of the remote southwestern islands of Jeonranam-do, including the Heugsan Islands. To discover its current situation, a small-scale survey was performed on the Heugsan Islands in September 2000. A total of 378 people, 151 male and 227 female, living in 8 villages (6 on Daeheugsan-do, 1 on Daejang-do, and 1 on Yeongsan-do) were subjected to a night blood survey for microfilaremia, and physical examination for elephantiasis on the extremities. There were 6 (1.6%) microfilaria positive cases, all in females aged 57-72 years, and from only two villages of the Daeheugsan-do area. There were 4 patients with lower leg elephantiasis, but they showed no microfilaremia. The results show that a low-grade endemicity of filariasis remains on the Daeheugsan-do.

Citations

Citations to this article as recorded by

Prevention and Control Strategies for Parasitic Infections in the Korea Centers for Disease Control and Prevention
Young Yil Bahk, Eun-Hee Shin, Shin-Hyeong Cho, Jung-Won Ju, Jong-Yil Chai, Tong-Soo Kim
The Korean Journal of Parasitology.2018; 56(5): 401. CrossRef
Follow-up Study of Patients Previously Diagnosed with Lymphatic Filariasis in Korea
Hyeng Il Cheun, Hee Eun Shin, Da Won Ma, Sung Hee Hong, Tae Yun Kim, Sang Eun Lee, JungWon Ju, Yun-Kyu Park, Tong-Soo Kim, Shin Hyeong Cho
Osong Public Health and Research Perspectives.2017; 8(6): 421. CrossRef
Surveillance and Vector Control of Lymphatic Filariasis in the Republic of Korea
Shin Hyeong Cho, Da Won Ma, Bo Ra Koo, Hee Eun Shin, Wook Kyo Lee, Byong Suk Jeong, Chaeshin Chu, Won Ja Lee, Hyeng Il Cheun
Osong Public Health and Research Perspectives.2012; 3(3): 145. CrossRef
Seasonal Prevalence of Mosquitoes, Including Vectors of Brugian Filariasis, in Southern Islands of the Republic of Korea
Hyeng-Il Cheun, Shin-Hyeong Cho, Hee-Il Lee, E-Hyun Shin, Jong-Soo Lee, Tong-Soo Kim, Won-Ja Lee
The Korean Journal of Parasitology.2011; 49(1): 59. CrossRef
Elimination of lymphatic filariasis in the Republic of Korea: an epidemiological survey of formerly endemic areas, 2002–2006
Hyeong‐Il Cheun, Jong‐Soo Lee, Shin‐Hyeong Cho, Yoon Kong, Tong‐Soo Kim
Tropical Medicine & International Health.2009; 14(4): 445. CrossRef
Review of Zoonotic Parasites in Medical and Veterinary Fields in the Republic of Korea
Heejeong Youn
The Korean Journal of Parasitology.2009; 47(Suppl): S133. CrossRef
Successful Control of Lymphatic Filariasis in the Republic of Korea
Hyeng-Il Cheun, Yoon Kong, Shin-Hyeong Cho, Jong-Soo Lee, Jong-Yil Chai, Joo-Shil Lee, Jong-Koo Lee, Tong-Soo Kim
The Korean Journal of Parasitology.2009; 47(4): 323. 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

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Original Articles

Surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adult flukes: Jong-Yil Chai, Woon-Mok Sohn, Sung-Yil Choi, Soon-Hyung Lee; Korean J Parasitol 2002;40(3):107-112.
Published online September 30, 2002; DOI: https://doi.org/10.3347/kjp.2002.40.3.107

Abstract
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A scanning electron microscopic study was performed on the surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adults. Metacercariae were collected from gills and muscles of mullets (Mugil cephalus) caught in a known endemic area, and adult flukes were harvested from dogs after 8 weeks of experimental infection. The worm was calabash form with its posterior part broader than the anterior part. Tegumental spines were densely distributed over the body surface, except on the suckers and genital apparatus, and around the excretory pore. Well differentiated spines were observed on the anterior half of the body, with 14-16 tips ventrally, and 19-20 tips dorsally. On the oral sucker, three pairs of type I sensory papillae (uni-ciliated knob-like swellings) and one pair of type II sensory papillae (aciliated round-swellings) were observed on the anterior and posterior parts of the lip, respectively. On the lip of the ventral sucker, one pair of type II sensory papillae was distributed only on its posterior part. Sperms were seen emerging from or entering into the genital apparatus. The results showed that the surface ultrastructure of P. summa was unique among the heterophyid trematodes, especially in digitation of tegumental spines and in distribution of sensory papillae on oral and ventral suckers.

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Jean‐José Filippi, Yann Quilichini, Joséphine Foata, Bernard Marchand
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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
TAXONOMIC STATUS, REDESCRIPTION, AND SURFACE ULTRASTRUCTURE OF ASCOCOTYLE (PHAGICOLA) PINDORAMENSIS N. COMB. (DIGENEA: HETEROPHYIDAE)
Susana Balmant Emerique Simões, Tomáš Scholz, Helene Santos Barbosa, Cláudia Portes Santos
Journal of Parasitology.2006; 92(3): 501. CrossRef
REDESCRIPTION AND SURFACE ULTRASTRUCTURE OF PYGIDIOPSIS MACROSTOMUM (DIGENEA: HETEROPHYIDAE)
S. B E. Simões, H. S. Barbosa, C. P. Santos
Journal of Parasitology.2005; 91(4): 931. CrossRef

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Surface ultrastructure of Metagonimus takahashii metacercariae and adults: Jong-Yil Chai, Sang-Mee Guk, Eun-Taek Han, Min Seo, Eun-Hee Shin, Woon-Mok Sohn, Sung-Yil Choi, Soon-Hyung Lee; Korean J Parasitol 2000;38(1):9-15.
Published online March 31, 2000; DOI: https://doi.org/10.3347/kjp.2000.38.1.9

Abstract
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A scanning electron microscopic study was performed on the surface ultrastructure of metacercariae and adults of Metagonimus takahashii. Metacercariae were collected from the scale of crucian carp (Carassius auratus), and adult flukes were harvested 1-4 weeks after infection to rats. In excysted metacercariae, the oral sucker had type I (numerous) and type II (seven in total) sensory papillae. Tegumental spines were dense and digitated into 5-7 points on the surface anterior to the ventral sucker, but became sparse and less digitated posteriorly toward the end of the body. In adults, seven type II sensory papillae were characteristically arranged around the lip of the oral sucker, and on the inner side of the lip four small and two large type I sensory papillae were symmetrically seen on each side (12 in total). Tegumental spines on anterior two-thirds of the body, were digitated with 9-12 tips ventrally and 8-13 tips dorsally. Sperms entering into the Laurer's canal were observed. The results show that the surface ultrastructure of M. takahashii is generally similar to those of M. yokogawai and M. miyatai except for the digitation of tegumental spines.

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Surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adult flukes
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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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Body Surface Ultrastructure as a Main Morphological Criterion for Distinguishing Adult Trematode Metagonimus suifunensis
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Surface ultrastructure of the adult and juvenile stages of the trematode Astiotrema impletum (Looss, 1899) Looss 1900 (incertae sedis) from the Nile puffer, Tetraodon lineatus Linnaeus, 1758
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Topography and ultrastructure of the tegument of Deropristis inflata Molin, 1859 (Digenea: Deropristidae), a parasite of the European eel Anguilla anguilla (Osteichthyes: Anguillidae)
Jean-José Filippi, Yann Quilichini, Bernard Marchand
Parasitology Research.2013; 112(2): 517. CrossRef
Topography and ultrastructure of the tegument of Lecithochirium musculus (digenea: Hemiuridae), a parasite of the European eel Anguilla anguilla (osteichthyes: Anguillidae)
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
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Surface ultrastructure of the plagiorchid trematode Glossidium pedatum Looss, 1899 from bagrid fish in Egypt
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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
Surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adult flukes
Jong-Yil Chai, Woon-Mok Sohn, Sung-Yil Choi, Soon-Hyung Lee
The Korean Journal of Parasitology.2002; 40(3): 107. CrossRef
Tegumental ultrastructure of Echinoparyphium recurvatum according to developmental stages
Woon-Mok Sohn, Ho-Choon Woo, Sung-Jong Hong
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Brachylaima cribbi (Digenea: Brachylaimidae): scanning electron microscopical observations of the life-cycle stages
A.R. Butcher, J.K. Brealey, D.I. Grove, R.B. Dymock
Journal of Helminthology.2002; 76(3): 207. CrossRef
Surface ultrastructure of Metagonimus takahashii metacercariae and adults
Jong-Yil Chai, Sang-Mee Guk, Eun-Taek Han, Min Seo, Eun-Hee Shin, Woon-Mok Sohn, Sung-Yil Choi, Soon-Hyung Lee
The Korean Journal of Parasitology.2000; 38(1): 9. CrossRef
A cytogenetic study on human intestinal trematodes of the genus Metagonimus (Digenea: Heterophyidae) in Korea
Soo-Ung Lee, Sun Huh, Gab-Man Park, Jong-Yil Chai
The Korean Journal of Parasitology.1999; 37(4): 237. CrossRef