| human infection of centrocestus caninus in thailand. | examination of fecal samples, collected after treatment with praziquantel, of the persons positive with opisthorchioid eggs residing in the northern provinces of thailand, was carried out. five adults centrocestus were recovered in one sample from doi saket, chiang mai and one adult was found in another fecal sample from wiang pa pao, chiang rai. the worms had 26-30 spines arranging in two rows around the oral sucker which agreed with the character of c. caninus. this is the first record of natu ... | 1997 | 9656410 |
| opisthorchiasis and intestinal fluke infections in northern thailand. | four hundred and thirty-one residents from 16 provinces in northern thailand who had previously been found positive for opisthorchis viverrini or opisthorchis viverrini-like eggs were given praziquantel 40 mg/kg. the stool was collected for 4 to 6 times and examined for adult worms. the prevalence of opisthorchis viverrini in this group was 11.6%. intestinal flukes, haplorchis taichui and haplorchis yokogawai, were predominantly found in 63.11% and 10.44% respectively. other intestinal flukes (c ... | 1998 | 9740284 |
| seasonal variation of metacercariae in cyprinoid fish from kwae noi bamroongdan dam, phitsanulok province, northern thailand. | abstract. a seasonal investigation of the occurrence of metacercariae in cyprinoid fish was conducted at the kwae noi bamroongdan dam, phitsanulok province, northern thailand during december 2008-august 2009. a total 361 cyprinoid fish from 10 species were examined by artificial digestion method evaluating for metacercariae. the metacercariae determined were haplorchis taichui, haplorchis pumilio, haplorchoides sp and centrocestus caninus. the prevalence of metacercariae ranged from 76.5% to 82. ... | 2011 | 21323166 |
| infection dynamics and molecular identification of metacercariae in cyprinoids from chiang mai and sakon nakhon provinces. | the infection dynamics of metacercariae were assessed in cyprinoid fish (cyprinoids) from chiang mai and sakon nakhon provinces, thailand, during october 2008 to september 2009. the samples were collected during 3 seasons from rivers and local markets. metacercarial infection was determined by acid-pepsin digestion and confirmed using hat-rapd pcr method. thirteen and 16 species of cyprinoids were collected from chiang mai and sakon nakhon with overall prevalences of metacercarial infection of 8 ... | 2011 | 21323165 |
| molecular identification of larval trematode in intermediate hosts from chiang mai, thailand. | snail and fish intermediate hosts were collected from rice fields in 3 districts; mueang, mae taeng and mae rim of chiang mai province during april-july 2008. for identification of larval trematode infection, standard (cracked for snail and enzymatically digested for fish) and molecular methods were performed. the results showed that three types of cercariae were found, pleurolophocercus, cotylocercous, and echinostome among 4 species of snail with a prevalence of 29, 23 and 3% respectively. mel ... | 2009 | 20578455 |
| chronological observations of intestinal histopathology in rats (rattus norvegicus) infected with centrocestus caninus. | intestinal pathological enzyme activity changes were studied chronologically in rats after centrocestus caninus infection. a single inoculation of 300 metacercariae isolated from the gills of goldfish (carassius auratus), was orally administered to male rats (n = 15). uninfected animals were used as controls (n = 5). at days 3, 7, 14, 21, and 28 post-infection (pi), three infected rats, and one from each control group, were sacrificed. the duodenum, jejunum, and ileum were removed separately and ... | 2006 | 17547056 |
| mucosal mast cell responses in rats (rattus norvegicus) experimentally infected with centrocestus caninus. | mucosal mast cell (mmc) responses and worm recovery rates in rats experimentally infected with centrocestus caninus were investigated. metacercariae of c. caninus, procured from goldfish, carassius auratus, were orally administered to twenty-five male rats (300 metacercariae each rat). the infected rats were sacrificed on days 3, 7, 14, 21 and 28 post-infection (pi) along with the control rats. worm recovery was performed from each part of small intestine. to investigate mmc, duodenal, jejunal a ... | 2006 | 17120962 |
| high prevalence of haplorchis taichui metacercariae in cyprinoid fish from chiang mai province, thailand. | this study aimed to investigate haplorchis taichui metacercarial infection in fish collected from the chom thong and mae taeng districts, chiang mai province during november 2001 to october 2002. a total 617 cyprinoid fish of 15 species were randomly collected and examined for h. taichui metacercariae. all the species of fish were found to be infected with h. taichui. the infection rates were 91.4% (266/290) and 83.8% (274/327), with mean intensities of 242.9 and 107.4 in the chom thong and mae ... | 2005 | 15916054 |
| a survey of helminths in cyprinoid fish from the mae ngad somboonchon reservoir, chiang mai province, thailand. | five species of cyprinoid fish, puntioplites proctozysron, hampala macrolepidota, labiobarbus siamensis, barbodes gonionotus, and henicorhynchus siamensis, were collected from mae ngad somboonchon reservoir, chiang mai province from october 2002 to september 2003 and examined for parasites. fourteen species of helminths were discovered: ten species of monogenea, dactylogyrus macrolepidoti, d. protozysron, d. puntioplites, d. quadribrachiatus, dactylogyrus sp i, ii, iii, gyrodactylus sp, paradipl ... | 2005 | 15906650 |
| metacercaria from freshwater fishes of mae sa stream, chiang mai, thailand. | metacercaria from freshwater fishes of mae sa stream, doi suthep-pui national park. chiang mai province were investigated between january 1997-december 1998, 3,133 fishes of 32 species were collected. the prevalence of infection of fishes was 19.087% (598/3, 133). six genera of metacercaria were recovered as follows: acanthostomum sp, centrocestus caninus, haplorchis taichui, haplorchoides sp, posthodiplostomum sp and stellantchasmus falcatus. the prevalence of each species of metacercaria was o ... | 2000 | 11414460 |
| mixed infections with opisthorchis viverrini and intestinal flukes in residents of vientiane municipality and saravane province in laos. | faecal examinations for helminth eggs were performed on 1869 people from two riverside localities, vientiane municipality and saravane province, along the mekong river, laos. to obtain adult flukes, 42 people positive for small trematode eggs (opisthorchis viverrini, heterophyid, or lecithodendriid eggs) were treated with a 20-30 mg kg(-1) single dose of praziquantel and purged. diarrhoeic stools were then collected from 36 people (18 in each area) and searched for helminth parasites using stere ... | 2005 | 16153322 |