| intestinal trematodes infecting humans in korea. | sixteen species of intestinal trematodes have been recovered from humans in korea. they include 10 species of the family heterophyidae (metagonimus yokogawai, m. takahashii, heterophyes nocens, h. heterophyes, h. dispar, heterophyopsis continua, pygidiopsis summa, stellantchasmus falcatus, centrocestus armatus, and stictodora fuscatum); one species of diplostomidae (fibricola seoulensis); three species of echinostomatidae (echinostoma hortense, e. cinetorchis, and echinochasmus japonicus); one s ... | 1991 | 1822879 |
| food-borne intestinal trematode infections in the republic of korea. | a total of 19 species of food-borne intestinal trematodes have been reported in humans in the republic of korea. they include 12 species of the heterophyidae, metagonimus yokogawai, m. takahashii, m. miyatai, heterophyes nocens, h. heterophyes (imported), h. dispar (imported), heterophyopsis continua, pygidiopsis summa, stellantchasmus falcatus, centrocestus armatus, stictodora fuscata, and s. lari; four species of the echinostomatidae, echinostoma hortense, e. cinetorchis, echinochasmus japonic ... | 2002 | 12113752 |
| plecoglossus altivelis as a new fish intermediate host of heterophyopsis continua. | p. altivelis from korea republic is recorded as a new host for h. continua which is described and figured. | 1985 | 12888699 |
| comparative morphology of eggs of heterophyids and clonorchis sinensis causing human infections in korea. | in order to provide some clues for differential diagnosis of trematode infections in fecal examination, the comparative morphology of eggs of 5 kinds of heterophyid flukes (metagonimus yokogawai, heterophyes heterophyes nocens, heterophyopsis continua, stellantchasmus falcatus and pygidiopsis summa) and clonorchis sinensis was studied. the eggs were obtained from distal portion of uteri of worms which were recovered from men after treatment. the characteristic shape and apperance of each kind of ... | 1984 | 12891010 |
| infection status with helminthes in feral cats purchased from a market in busan, republic of korea. | the present study was performed to investigate the infection status with helminth in a group of feral cats in korea. more than 29 helminth species including adults or eggs were detected in visceral and fecal samples of the examined cats. among these were a host of nematodes, including toxocarids, ancylostoma sp. and the larva of anisakis simplex; trematodes, including clonorchis sinensis, paragonimus westermani, eurytrema pancreaticum, pharyngostomum cordatum, metagonimus spp., heterophyes nocen ... | 2005 | 16192750 |
| heterophyid metacercarial infections in brackish water fishes from jinju-man (bay), kyongsangnam-do, korea. | heterophyid metacercarial infections in brackish water fishes, i.e., perch, shad, mullet, redlip mullet, and goby, of jinju-man (bay), kyongsangnam-do, korea, were investigated using a digestion technique. among 45 perch (lateolabrax japonicus), the metacercariae of heterophyopsis continua were found in 55.6% (18.5 metacercariae per fish), stictodora spp. in 28.9% (3.6), and metagonimus takahashii in 6.7% (17.0). the metacercariae of h. continua were detected in 23 (65.7%) of 35 shad (konosirus ... | 2006 | 16514276 |
| prevalence of zoonotic metacercariae in two species of grouper, epinephelus coioides and epinephelus bleekeri, and flathead mullet, mugil cephalus, in vietnam. | fishborne zoonotic metacercariae have not been reported from brackish water and marine fish from vietnam waters although these parasites are common in the country's freshwater fish. both wild-caught and cultured grouper (epinephelus coioides and epinephelus bleekeri), and mullet (mugil cephalus) from brackish and marine waters located in khanh hoa province in central coastal vietnam were examined, and found positive for zoonotic trematode metacercariae. from grouper, heterophyopsis continua and ... | 2008 | 18552542 |
| the parasite fauna of stray domestic cats (felis catus) in dubai, united arab emirates. | two hundred forty feral domestic cats trapped between 2004 and 2008 in the city centre and the suburb districts of dubai, as well as in desert biotopes, were subjected to a complete parasitological dissection. the established parasite fauna consisted of cystoisospora felis (12.9%), cystoisospora rivolta (9.2%), toxoplasma/hammondia (0.8%), heterophyes heterophyes (2.5%), heterophyopsis continua (0.4%), joyeuxiella spp. (65.8%), diplopylidium noelleri (37.1%), hydatigera taeniaeformis (16.7%), ta ... | 2009 | 19238440 |
| echinostoma hortense and heterophyid metacercariae encysted in yellowfin goby, acanthogobius flavimanus, from shinan-gun and muan-gun (jeollanam-do), korea. | fishborne trematode (fbt) metacercariae were investigated in yellowfin goby, acanthogobius flavimanus, collected from shinan-gun and muan-gun, jeollanam-do (province), korea. all collected fishes were examined using the artificial digestion method. in all of 15 gobies from aphae-myeon in shinan-gun, metacercariae of stictodora spp. (334 metacercariae/fish), heterophyes nocens (153/fish), and heterophyopsis continua (20/fish) were detected. in 2 of 14 gobies from jido-myeon in shinan-gun, 8 echin ... | 2009 | 19724708 |
| foodborne trematode metacercariae in fish from northern vietnam and their adults recovered from experimental hamsters. | the prevalence of foodborne trematode (fbt) metacercariae was investigated in fish from 2 localities of northern vietnam in 2004-2005. freshwater fish (9 species) were collected from local markets in hanoi city (n=76) and nam dinh province (n=79), and were examined for fbt metacercariae using the artificial digestion technique. adult flukes were obtained from hamsters experimentally infected with the metacercariae at day 8 post-infection. three (haplorchis pumilio, centrocestus formosanus, and p ... | 2012 | 23230329 |
| a new endemic focus of gymnophalloides seoi infection on aphae island, shinan-gun, jeollanam-do. | a new endemic focus of gymnophalloides seoi infection has been discovered on aphae island (shinangun, jeollanam-do), republic of korea. this area, which is referred to as bokyong-ri, is a small seashore village located in the northern portion of the island. fecal samples were collected from a total of 57 residents and examined by the kato-katz and formalin-ether sedimentation techniques. helminth eggs were detected in 37 samples (64.9%); 33 samples were positive for g. seoi eggs (57.9%), 4 for p ... | 2007 | 17374977 |
| a new endemic focus of heterophyes nocens and other heterophyid infections in a coastal area of gangjin-gun, jeollanam-do. | to know the prevalence of heterophyid trematodes among inhabitants of a southern coastal village, i.e., sacho-ri, gangjin-gun, jeollanam-do (province), 82 stool samples were examined on helminth eggs and protozoan cysts using kato-katz and formalin-ether sedimentation techniques. total 33 people (40.2%) were positive for trematodes (heterophyes nocens 15 people, pygidiopsis summa 3, metagonimus sp.; 4, clonorchis sinensis 7, gymnophalloides seoi 6) and/or protozoa (entamoeba coli 3). among intes ... | 2007 | 17374976 |
| prevalence of gymnophalloides seoi infection in coastal villages of haenam-gun and yeongam-gun, republic of korea. | 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 ... | 2006 | 16514291 |
| two species of goby, boleophthalmus pectinirostris and scartelaos sp., as the new second intermediate hosts of heterophyid fluke in korea. | a survey was performed in order to determine the infection status of the metacercariae of heterophyid fluke in two goby species, boleophthalmus pectinirostris and scartelaos sp., collected from gangjin-gun, and shinangun, sooncheon-shi, jeollanam-do, republic of korea. a total of three metacercariae of heterophyopsis continua was found in only one b. pectinirostris (10.0%) from gangjin-gun. heterophyes nocens metacercariae were detected in 24 b. pectinirostris (96.0%) and 14 scartelaos sp. (63.6 ... | 2005 | 16340306 |
| studies on intestinal trematodes in korea xiii. two cases of natural human infection by heterophyopsis continua and the status of metacercarial infection in brackish water fishes. | two cases of natural human infection by heterophyopsis continua (heterophyidae) were identified by collection of adult worms in 1983 in korea. and in order to know the source of infection a study on fish intermediate hosts was performed along the southwestern coastal areas. the cases were 24 and 50-year old males residing in southern coastal areas. they had the clinical complaints of non-specific gastrointestinal symptoms such as epigastric pain and one of them also complained the discharge of t ... | 1984 | 12891031 |
| heterophyid trematodes (heterophyopsis continua, pygidiopsis summa and heterophyes heterophyes nocens) from domestic cats in korea. | during 8 april 1983 to 9 april 1985, a total of 181 domestic cats (felis catus domestica linnaeus) of unknown localities in korea were purchased at seoul chung-ang market, and the internal organs were dissected for helminth infections. in the results, three kinds of trematodes of family heterophyidae (ohdner, 1914) were obtained from small intesine of domestic cats and identified as follows: five adult worms of heterophyopsis continua (onji et nishio, 1916) from three hosts, two hundreds and twe ... | 1985 | 12888661 |
| two endemic foci of heterophyids and other intestinal fluke infections in southern and western coastal areas in korea. | two endemic foci of heterophyid infections were discovered in coastal villages of puan-gun, chollabuk-do, and sachon-gun. kyongsangnam-do, korea. fecal examinations were performed on 153 inhabitants of puan-gun and 138 of sachon-gun, using cellophane thick smear and formalin-ether sedimentation technique. the helminth egg and/or protozoan cyst positive rate was 21.5% (33/153) in puan-gun and 39.1% (54/138) in sachon-gun. in puan-gun, the egg positive rate of heterophyids was the highest, 17.6%, ... | 1998 | 9755586 |
| a new endemic focus of heterophyes nocens, pygidiopsis summa, and other intestinal flukes in a coastal area of muan-gun, chollanam-do. | a small coastal village of muan-gun, chollanam-do, was surveyed for intestinal fluke infections, especially heterophyids such as heterophyes nocens and pygidiopsis summa by fecal examination on 108 inhabitants. the egg positive rate of heterophyids was very high, 75.0%, and that of other parasites was comparatively low, 0.9-3.7% by parasite species. after treatment of 20 patients showing high e.p.g. with praziquantel and purging with mgso4, total 3,864 specimens of h. nocens were collected from ... | 1997 | 9446903 |
| conger myriaster, a new second intermediate host of heterophyopsis continua (digenea:heterophyidae). | six metacercariae were found from the gill filaments of conger myriaster purchased at mokpo-shi in korea on 7 september, 1996. based on the morphology of the excysted specimen, we identified them as metacercariae of heterophyopsis continua. c. myriaster is a new intermediate host of h. continua in the literature. | 1996 | 9017916 |
| one human case of natural infection by heterophyopsis continua and three other species of intestinal trematodes. | the third human case of natural infection by heterophyopsis continua in korea was found in chinju, kyongsangnam-do. the case was a 53-year-old man. he used to eat raw brackish and fresh water fish. after praziquantel treatment and purgation, h. continua were collected from the diarrheal stool together with metagonimus yokogawai, heterophyes nocens and echinostoma hortense. his clinical complaints were indigestion, epigastric discomfort, poor appetite and fatigue. the complaints were considered r ... | 1996 | 8820745 |
| recovery rate, growth and development of heterophyopsis continua in experimental chicks. | the growth and developmental pattern of h. continua was observed after experimental infection of their metacercariae to chicks. the recovery rate of worms from the chicks at 1 to 28 days post-infection (pi) was 12.8% in average. the rate remained fairly high for early 4 days of infection but decreased thereafter rapidly till 28 days pi. most of the flukes, 91.9%, were recovered from the ileum of the chicks. in metacercariae, genital organs such as the ovary, testes, seminal vesicle, seminal rece ... | 1990 | 2271501 |
| intestinal trematodes of humans in korea: metagonimus, heterophyids and echinostomes. | ten species of the trematode family heterophyidae (metagonimus yokogawai, m. takahashii, heterophyes nocens, h. heterophyes, h. dispar, heterophyopsis continua, pygidiopsis summa, stellantchasmus falcatus, centrocestus armatus and stictodora fuscatum), and 3 species of the family echinostomatidae (echinostoma hortense, e. cinetorchis and echinochasmus japonicus) have been found to infect humans in korea. biological and epidemiological studies on the above species have shown that metagonimus, het ... | 1990 | 2133416 |
| [a numerical taxonomic study on heterophyid trematodes]. | a numerical taxonomy was studied on a group of heterophyid trematodes and analysis was made on the following species: metagonimus yokogawai (3 otu, operational taxonomic unit), metagonimus miyata type (3 otu), metagonimus takahashii (2 otu), heterophyes dispar (2 otu), heterophyes heterophyes (1 otu), heterophyes nocens (2 otu), heterophyopsis continua (1 otu), pygidiopsis summa (3 otu), stellantchasmus falcatus (2 otu) and stictodora lari (2 otu). twenty-six morphological characters were measur ... | 1991 | 1911627 |
| surface ultrastructure of the developmental stages of heterophyopsis continua (trematoda: heterophyidae). | ultrastructural observations were made on the tegument of juvenile and adult stages of heterophyopsis continua using scanning electron microscopy. on the surface posterior to the ventral sucker, the tegumental processes were bandlike in the metacercariae, cobblestonelike in the flukes 2 days postinfection (pi), and velvety at 3 days pi. the anterior surface between the oral and ventral suckers of the metacercariae was packed densely with tegumental spines having a 10- to 14-pointed tip. in fluke ... | 1991 | 1865270 |
| infection status of estuarine fish and oysters with intestinal fluke metacercariae in muan-gun, jeollanam-do, korea. | the source of human infection with intestinal flukes was surveyed in estuarine fishes, including the dotted gizzard shad, common sea bass, common blackish goby, redlip mullet, black sea bream, and oyster collected from muan-gun, jeollanam-do, korea during august and september 2007. collected fishes and oysters were artificially digested in pepsin-hcl solution and examined under a stereomicroscope. in 36 shads (konosirus punctatus) and 20 basses (lateolabrax japonicus) examined, heterophyopsis co ... | 2012 | 22949748 |
| heterophyid trematodes recovered from people residing along the boseong river, south korea. | we conducted an epidemiological survey to determine the status of heterophyid fluke infections among people residing along the boseong river, gokseong-gun, south korea (= korea) from october 2011 to february 2012. fecal specimens were collected from 115 (male 51, female 64) people and examined for intestinal helminth eggs using the kato-katz thick smear technique. the eggs of metagonimus yokogawai together with other metagonimus spp. were detected in 28 (24.3%) cases. eleven egg positive people ... | 2015 | 25944352 |
| pygidiopsis summa (digenea: heterophyidae): status of metacercarial infection in mullets from coastal areas in the republic of korea. | to know the infection status of zoonotic trematode metacercariae in brackish water fish, we surveyed mullets collected from 18 coastal areas in the republic of korea. the metacercariae of pygidiopsis summa were detected in 236 (68.2%) out of 346 mullets examined. they were found in mullets from 15 areas except for those from boseong-gun (jeollanam-do), pohang-si, and uljin-gun (gyeongsangbuk-do). especially in mullets from taean-gun (chungcheongnam-do) and geoje-si (gyeongsangnam-do), their prev ... | 2016 | 27658602 |
| comparative morphology of minute intestinal fluke eggs that can occur in human stools in the republic of korea. | 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; t ... | 2012 | 22949747 |
| zoonotic intestinal trematodes in stray cats (felis catus) from riverside areas of the republic of korea. | the present study was performed to survey the infection status of zoonotic intestinal trematode (zit) in stray cats from 5 major riverside areas in the republic of korea. total 400 stray cats were captured with live-traps in riverside areas of seomjingang ('gang' means river) (203 cats) from june to october 2010, and of yeongsangang (41), nakdonggang (57), geumgang (38), and hangang (61 cats) from june to october 2011, respectively. small intestines resected from cats were opened with a pair of ... | 2015 | 25925180 |
| seasonal features of heterophyopsis continua metacercariae in perches, lateolabrax japonicus, and infectivity to the final host. | as the second intermediate host, the perch lateolabrax japonicus provides metacercariae of heterophyopsis continua to man. fry of the perch arrive at and grow to mid-sized fish in the brackish water of jinju bay, south korea. the h. continua metacercariae occur in perch as small and mid-sized forms in july and grow to the large form by august. the size distribution of metacercariae shifts dominantly to the large form in september and then remains as it was. adult h. continua recovery was high fr ... | 2011 | 21845407 |
| fish-borne zoonotic trematode metacercariae in the republic of korea. | the prevalence of fish-borne trematodes (fbt), including clonorchis sinensis, is still high in riverside areas of the republic of korea. the author reviewed the detection and identification methods, differential keys, fish intermediate hosts, and morphological characteristics of fbt metacercariae. fbt metacercariae found in freshwater fish are classified mainly into 4 families, i.e., opisthorchiidae, heterophyidae, echinostomatidae, and clinostomidae. the metacercariae of c. sinensis, found in 4 ... | 2009 | 19885326 |