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Ho-Choon Woo	3 Articles
Discovery of Larval Gnathostoma nipponicum in Frogs and Snakes from Jeju-do (Province), Republic of Korea Ho-Choon Woo, Hong-Shik Oh, Shin-Hyeong Cho, Byoung-Kuk Na, Woon-Mok Sohn Korean J Parasitol 2011;49(4):445-448. Published online December 16, 2011 DOI: https://doi.org/10.3347/kjp.2011.49.4.445 Abstract PDF A survey was performed to find out the intermediate hosts of Gnathostoma nipponicum in Jeju-do (Province), the Republic of Korea. In August 2009 and 2010, a total of 82 tadpoles, 23 black-spotted pond frogs (Rana nigromaculata), 7 tiger keelback snakes (Rhabdophis tigrinus tigrinus), 6 red-tongue viper snakes (Agkistrodon ussuriensis), and 2 cat snakes (Elaphe dione) were collected in Jeju-do and examined by the pepsin-HCl digestion method. Total 5 gnathostome larvae were detected in 3 (50%) of 6 A. ussuriensis, 70 larvae in 3 of 7 (42.9%) R. tigrinus tigrinus, and 2 larvae in 2 of 82 (8.7%) frogs. No gnathostome larvae were detected in tadpoles and cat snakes. The larvae detected were a single species, and 2.17×0.22 mm in average size. They had characteristic head bulbs, muscular esophagus, and 4 cervical sacs. Three rows of hooklets were arranged in the head bulbs, and the number of hooklets in each row was 29, 33, and 36 posteriorly. All these characters were consistent with the advanced third-stage larvae of G. nipponicum. It has been first confirmed in Jeju-do that R. nigromaculata, A. ussuriensis, and R. tigrinus tigrinus play a role for intermediate and/or paratenic hosts for G. nipponicum. Citations Citations to this article as recorded by A Global Review of the Zoonotic Potential and Disease Risks of Amphibian Parasites in Bullfrog Aquaculture Meiqi Weng, Xinhua Liu, Chenxi Zhang, Rui Shu, Andrew Wang, Haotian Zhang, Xingqiang Wang, Huirong Yang, Jinyong Zhang Reviews in Aquaculture.2025;[Epub] CrossRef Zoonotic Parasites in Reptiles, with Particular Emphasis on Potential Zoonoses in Australian Reptiles Tommy L. F. Leung Current Clinical Microbiology Reports.2024; 11(2): 88. CrossRef A case of vocal cord gnathostomiasis diagnosed with sectional morphologies in a histopathological specimen from a Chinese woman living in Korea Doo Sik Park, Eun Hyun Cho, Kyung Hoon Park, Soo Min Jo, Bumjung Park, Sun Huh Parasites, Hosts and Diseases.2023; 61(3): 298. CrossRef Three Nematode Species Recovered from Terrestrial Snakes in Republic of Korea Seongjun Choe, Junsik Lim, Hyun Kim, Youngjun Kim, Heejong Kim, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Keeseon S. Eom The Korean Journal of Parasitology.2016; 54(2): 205. CrossRef Gnathostoma spinigerum Infection in the Upper Lip of a Korean Woman: An Autochthonous Case in Korea Jae Hee Kim, Hyemi Lim, Young-Sang Hwang, Tae Yeon Kim, Eun Mee Han, Eun-Hee Shin, Jong-Yil Chai The Korean Journal of Parasitology.2013; 51(3): 343. CrossRef 9,376 View 84 Download Crossref The Jeju Weasel, Mustela sibilica quelpartis, A New Definitive Host for Gnathostoma nipponicum Yamaguti, 1941 Ho-Choon Woo, Hong-Shik Oh, Shin-Hyeong Cho, Byoung-Kuk Na, Woon-Mok Sohn Korean J Parasitol 2011;49(3):317-321. Published online September 30, 2011 DOI: https://doi.org/10.3347/kjp.2011.49.3.317 Abstract PDF Adult gnathostomes were discovered in the stomach of the Jeju weasel, Mustela sibilica quelpartis, road-killed in Jeju-do (Province). Their morphological characters were examined to identify the species. Total 50 gnathostome adults were collected from 6 out of 10 weasels examined. In infected weasels, 4-6 worms were grouped and embedded in each granulomatous gastric tumor, except 1 weasel. Male worms were 25.0×1.4 mm in average size, and had a tail with pedunculate papillae, a spicule, and minute tegumental spines. Females were 40.0×2.5 mm in average size, and had a tail without tegumental spines. Pointed and posteriorly curved hooklets were arranged in 8-10 rows on the head bulb. Tegumental spines were distributed from behind the head bulb to the middle portion of the body. The spines were different in size and shape by the distribution level of the body surface. Fertilized eggs were 65.5×38.9 ?m in average size, and had a mucoid plug at 1 pole. These gnathostomes from Jeju weasels were identified as Gnathostoma nipponicum Yamaguti, 1941. By the present study, it was confirmed for the first time that G. nipponicum is distributed in Jeju-do, the Republic of Korea, and the Jeju weasel, M. sibilica quelpartis, plays a crucial role for its definitive host. Citations Citations to this article as recorded by A case of vocal cord gnathostomiasis diagnosed with sectional morphologies in a histopathological specimen from a Chinese woman living in Korea Doo Sik Park, Eun Hyun Cho, Kyung Hoon Park, Soo Min Jo, Bumjung Park, Sun Huh Parasites, Hosts and Diseases.2023; 61(3): 298. CrossRef Mustela sibirica (Carnivora: Mustelidae) Chris J Law Mammalian Species.2018; 50(966): 109. CrossRef Gnathostoma spinigerum Infection in the Upper Lip of a Korean Woman: An Autochthonous Case in Korea Jae Hee Kim, Hyemi Lim, Young-Sang Hwang, Tae Yeon Kim, Eun Mee Han, Eun-Hee Shin, Jong-Yil Chai The Korean Journal of Parasitology.2013; 51(3): 343. CrossRef Discovery of LarvalGnathostoma nipponicumin Frogs and Snakes from Jeju-do (Province), Republic of Korea Ho-Choon Woo, Hong-Shik Oh, Shin-Hyeong Cho, Byoung-Kuk Na, Woon-Mok Sohn The Korean Journal of Parasitology.2011; 49(4): 445. CrossRef 11,816 View 95 Download Crossref Tegumental ultrastructure of Echinoparyphium recurvatum according to developmental stages Woon-Mok Sohn, Ho-Choon Woo, Sung-Jong Hong Korean J Parasitol 2002;40(2):67-73. Published online June 30, 2002 DOI: https://doi.org/10.3347/kjp.2002.40.2.67 Abstract PDF The present study was performed to observe tegumental ultrastructure of Echinoparyphium recurvatum according to developmental stages. Worms (1, 3, 5 and 15-day old) were recovered from chicks experimentally infected with metacercariae from Radix auricularia coreana. One-day old worms were elongated and ventrally concave, and covered with peg-like tegumental spines except the adjacent areas of the head crown and excretory pore. Type I sensory papillae were distributed on the lip of the oral sucker, and grouped ciliated papillae were around the oral sucker. Peg-like tegumental spines were densely distributed on the anterior surface of the ventral sucker level. The ventral sucker had an aspinous tegument and no sensory papillae. Tegumental spines on the posterior surface of the ventral sucker level were sparsely distributed and disappeared posteriorly. In 3 and 5-day old worms, the tegument around the oral sucker was aspinose and wrinkled concentrically. The ventral sucker had a wrinkled tegument and many bulbous papillae. Type I sensory papillae were distributed between the bulbous papillae. Tegumental spines were spade-shaped with a terminal tip. A total of 45 collar spines including 4 end group ones on both ventral corners was alternately arranged in 2 rows. The 15-day old worms were very stout and their tegumental spines were tongue-shaped without a terminal tip. From the above results, it is confirmed that the surface ultrastructure of E. recurvatum was generally similar to that of other echinostomatid flukes. However, some features, i.e., morphological change of tegumental spines and appearence of sensory papillae on the ventral sucker according to development, and number, shape and arrangement of collar spines, were characteristic, which may be of taxonomic and bioecological significance. Citations Citations to this article as recorded by Morphological and molecular characterization of Acanthostomum species with Plesiomonas shigelloides coinfection: Immunological and histopathological appraisal in Bagrus bajad Marwa M. Attia, Abdullah Albaqami, Rania I. Mohamed, Hanim S. Heikal, Asmaa W. Soliman, Mohamed Abdelsalam Microbial Pathogenesis.2025; 200: 107365. CrossRef Ultrastructure of an opecoelid daughter sporocyst, Podocotyle sp. (Digenea: Opecoelidae): comparative analysis of the somatic tissues and new insights into the organization of the nervous system Sofia A. Denisova, Natalia N. Shunatova, Vladimir V. Lebedenkov, Sergei V. Shchenkov Canadian Journal of Zoology.2023; 101(7): 579. CrossRef New data on the nervous system ofCercaria parvicaudataStunkard & Shaw, 1931 (Trematoda: Renicolidae): revisiting old hypotheses S.A. Denisova, S.V. Shchenkov Journal of Helminthology.2020;[Epub] CrossRef The biology of Echinoparyphium (Trematoda, Echinostomatidae) Jane Huffman, Bernard Fried Acta Parasitologica.2012;[Epub] CrossRef Surface Ultrastructure of Juvenile and Adult Acanthoparyphium tyosenense (Digenea: Echinostomatidae) Eun-Taek Han, Moon-Seok Choi, Sung-Yil Choi, Jong-Yil Chai Journal of Parasitology.2011; 97(6): 1049. CrossRef Scanning electron microscopy of adult Echinoparyphium recurvatum (Von Linstow, 1873) (Digenea: Echinostomatidae) from Britain A.M. McCarthy Journal of Helminthology.2011; 85(4): 453. CrossRef Identification of antigenic proteins from Echinostoma caproni (Trematoda) recognized by mouse immunoglobulins M, A and G using an immunoproteomic approach J. SOTILLO, L. VALERO, M. M. SÁNCHEZ DEL PINO, B. FRIED, J. G. ESTEBAN, A. MARCILLA, R. TOLEDO Parasite Immunology.2008; 30(5): 271. CrossRef Developmental and Functional Ultrastructure of Ornithodiplostomum ptychocheilus Diplostomula (Trematoda: Strigeoidea) during Invasion of the Brain of the Fish Intermediate Host, Pimephales promelas David Bruce Conn, Cameron P. Goater, Douglas Bray Journal of Parasitology.2008; 94(3): 635. CrossRef Developmental and Functional Ultrastructure of Ornithodiplostomum ptychocheilus Diplostomula (Trematoda: Strigeoidea) during Invasion of the Brain of the Fish Intermediate Host, Pimephales promelas David Bruce Conn, Cameron P. Goater, Douglas Bray Journal of Parasitology.2008; 94(3): 635. CrossRef FIRST RECORD AND DESCRIPTION OF METACERCARIAE OF CURTUTERIA ARGUINAE N. SP. (DIGENEA: ECHINOSTOMATIDAE), PARASITE OF COCKLES CERASTODERMA EDULE (MOLLUSCA: BIVALVIA) IN ARCACHON BAY, FRANCE Céline Desclaux, Fernanda Russell-Pinto, Xavier de Montaudouin, Guy Bachelet Journal of Parasitology.2006; 92(3): 578. CrossRef MORPHOLOGICAL OBSERVATIONS OF ECHINOCHASMUS JAPONICUS CERCARIAE AND THE IN VITRO MAINTENANCE OF ITS LIFE CYCLE FROM CERCARIAE TO ADULTS Min-Ho Choi, Sae Hoon Kim, Jong-Hoon Chung, Hye-Jin Jang, Joon-Ho Eom, Byung-Suk Chung, Woon-Mok Sohn, Jong-Yil Chai, Sung-Tae Hong Journal of Parasitology.2006; 92(2): 236. CrossRef Tegumental ultrastructure of the juvenile and adult Himasthla alincia (Digenea: Echinostomatidae) Eun-Taek Han, Kye-Young Han, Jong-Yil Chai The Korean Journal of Parasitology.2003; 41(1): 17. CrossRef 10,255 View 89 Download Crossref