| comparative studies on the morphology of the eggs of opisthorchis viverrini and lecithodendriid trematodes. | iodine staining and scanning electron microscopy were used to determine the morphological features distinguishing opisthorchis viverrini from lecithodendriid eggs in human feces. the embryonated eggs of lecithodendriid trematodes differ from o. viverrini by the presence of an iodophilic body, a large mass at the posterior end of miracidium that stains brown in 0.2% iodine solution and the curved miracidium of phaneropsolus bonnei. all forms of lecithodendriid eggs can be differentiated from thos ... | 1991 | 1820653 |
| eggshell morphology of the small eggs of human trematodes in thailand. | light and scanning electron micrographs of opisthorchis viverrini, haplorchis taichui, h. pumilio, a phaneropsolus bonnei, and prosthodendrium molenkampi eggs were studied. under light microscopy. o. viverrini eggs had rough eggshells and prominent shoulders. h. taichui, h. pumilio were similar in shape and had smooth eggshells and prominent shoulders. h. pumilio eggs were bigger than h. taichui eggs. p. bonnei and p. molenkampi eggs had smooth eggshells and indistinct shoulders. p. bonnei eggs ... | 1991 | 1820654 |
| studies on the life cycle of phaneropsolus bonnei and prosthodendrium molenkampi in thailand. | | 1973 | 4202641 |
| phaneropsolus bonnei lie kian joe, 1951, established as a naturally occurring parasite of humans. | | 1972 | 5057218 |
| preliminary report on phaneropsolus bonnei lie kian joe, 1951. a newly discovered human intestinal fluke from northeastern thailand. | | 1970 | 5423049 |
| 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 |
| potassium permanganate staining for differentiation the surface morphology of opisthorchis viverrini, haplorchis taichui and phaneropsolus bonnei eggs. | potassium permanganate staining method was developed for differentiation opisthorchis viverrini, haplorchis taichui and phaneropsolus bonnei eggs. the surfaces of o. viverrini, h. taichui and p. bonnei eggs stained permanently and temporarily were similar in appearance even the staining procedures were varied both in concentration and time. determined under light microscope set at 400x, all of these eggs were oval-shaped, operculated at one pole and indistinct small knob at posterior end. o. viv ... | 1999 | 10774711 |
| 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 |
| high prevalence of liver and intestinal fluke infections among residents of savannakhet province in laos. | the prevalence of liver and intestinal fluke infections was surveyed on residents of savannakhet province, laos. fecal specimens were collected from a total of 981 residents in 4 mekong riverside villages and examined by the kato-katz thick smear technique. the results revealed that the overall helminth egg positive rate was 84.2%, and the positive rate for small trematode eggs, including opisthorchis viverrini, heterophyids, or lecithodendriids, was 67.1%. to obtain adult flukes, 38 small trema ... | 2007 | 17876167 |
| multi-infection with helminths in adults from northeast thailand as determined by post-treatment fecal examination of adult worms. | six hundred and eighty-one residents from 16 provinces in northeast thailand who had previously been found positive for opisthorchis viverrini and taenia spp. eggs were given 40 mg praziquantel (bayer, germany), per kg body weight. the total stool output for one to three days was collected and examined for adult worms. the prevalence of o. viverrini in this group was 92.4%. the intestinal flukes echinostoma malayanum, e. ilocanum and e. revolutum were found to be high in males, with 8.3%, 8.1% a ... | 1994 | 7939164 |
| phaneropsolus spinicirrus n. sp. (digenea: lecithodendriidae), a human parasite in thailand. | phaneropsolus spinicirrus n. sp., collected in a postpraziquantel treatment stool of a 44-yr-old woman from kalasin province in northeastern thailand, is described. it is the second species of the genus phaneropsolus looss, 1899, found to parasitize a human host. it differs from the first species, phaneropsolus bonnei lie, 1951, in the presence of a short spinose cirrus and the structure and distribution of tegumental spines. the new species is most similar to phaneropsolus perodictici goodman a ... | 1991 | 1865257 |
| prevalence of the intestinal flukes haplorchis taichui and h. yokogawai in a mountainous area of phongsaly province, lao pdr. | phongsaly province, located in the northernmost area of lao pdr, was previously suggested to be endemic for the liver fluke opisthorchis viverrini infection. to confirm, or rule out, this suggestion, the phonxay village in the khoua district, phongsaly province, was selected for a survey. ten volunteers (8 men and 2 women aged 31-57 years) who consumed raw freshwater fish and had gastrointestinal troubles were treated with a single dose of praziquantel (40 mg/kg) and pyrantel pamoate (10 mg/kg) ... | 2010 | 21234239 |
| high prevalence of haplorchis taichui, phaneropsolus molenkampi, and other helminth infections among people in khammouane province, lao pdr. | the prevalence of liver and intestinal helminth infections, including opisthorchis, haplorchis, phaneropsolus, hookworms, enterobius, and taenia, was surveyed in khammouane province, lao pdr. fecal specimens were collected from 1,242 people (590 men and 652 women) in 3 mekong riverside villages and were examined by the kato-katz thick smear technique. the overall helminth egg positive rate was 81.1%. the positive rate for small trematode eggs, including opisthorchis viverrini, heterophyids, and ... | 2009 | 19724697 |
| rare human infection with the trematode echinochasmus japonicus in lao pdr. | food-borne trematodiases are often neglected although millions of people are affected and these zoonotic diseases are emerging in some parts of the world. humans acquire an infection through consumption of the second intermediate hosts (e.g. freshwater fish) that harbour the metacercariae of the parasite. here, we report the first three cases of echinochasmus japonicus infection in lao pdr. adult e. japonicus flukes were recovered from a woman (age: 37 years) and two men (age: 42 and 75 years) f ... | 2009 | 19059359 |
| diversity of human intestinal helminthiasis in lao pdr. | food-borne trematodiasis is an emerging public health problem, including in lao pdr. we investigated the diversity of intestinal helminthes and polyparasitism in patients with hepatobiliary or intestinal symptoms in hospital and community-based surveys. stool samples from 232 individuals aged >or=15 years were examined by the kato-katz method (three samples) and a formalin ethyl-acetate concentration technique (one sample). opisthorchis viverrini and minute intestinal flukes (mif) were common, w ... | 2009 | 19038411 |
| high prevalence of haplorchiasis in nan and lampang provinces, thailand, proven by adult worm recovery from suspected opisthorchiasis cases. | opisthorchiasis, a risk factor for cholangiocarcinoma in humans, is of public health importance in thailand. the annual surveillance reports from nan and lampang provinces, thailand, for the year 2011 showed an opisthorchiasis prevalence of over 70% by recovery of eggs in the feces. this study investigated whether most cases are actually due to minute intestinal flukes (mif) rather than opisthorchis viverrini, as the eggs of both can hardly be differentiated by morphology. fifty and 100 cases fr ... | 2013 | 24516289 |