| studies on the migratory route of paragonimus siamensis in the bandicoot (bandicota indica). | the migration route and the development of p. siamensis obtained from s. juliae and s. germaini were studied in b. indica. the infection rates of p. siamensis in these 2 species of crabs were 19.7% and 21.4% respectively. worms were recovered in the abdominal cavity, pleural cavity and lungs on day 12, 16 and 30 respectively after oral infection. worms became mature and laid eggs on day 47 after infection, but their size still increased considerably. the average egg output was found to be 144 eg ... | 1977 | 887994 |
| paragonimus siamensis: subcutaneous infection with ex-cysted metacercariae. | metacercariae of the lung fluke paragonimus siamensis were still infective after excysting, and worms could therefore develop to adults in the rats infected subcutaneously with these metacercariae. cysts containing adult worms were found both inside and outside the lung, those from extrapulmonary cysts being larger. | 1989 | 2615589 |
| the route of migration of paragonimus siamensis miyazaki & wykoff, 1965 in the white rat. | after they were ingested, the metacercariae of paragonimus siamensis excysted in the stomach, penetrated through the stomach wall and the first 3 centimetres of small intestinal wall into the abdominal cavity, then penetrated into abdominal muscle. the worms stayed in abdominal muscle for about one week, then appeared again in the abdominal cavity before entering the pleural cavity and lungs; they also appeared in thoracic muscle, diaphragm, liver, and muscle of foreleg. the worm's size increase ... | 1986 | 3576289 |
| occurrence of the lung fluke paragonimus siamensis miyazaki and wykoff 1965, in the republic of the philippines. | | 1972 | 4652471 |
| endemicity of paragonimus siamensis miyazaki and wykoff 1965, the second species of lung fluke found in the republic of the philippines. | | 1973 | 4787653 |
| paragonimiasis in the philippines: current status. | paragonimiasis in the philippines was first reported in 1907. the first attempt to study its life cycle was made in 1941 when metacercariae of paragonimus were found in fresh-water mountain crabs. at present the causative agent of human paragonimiasis in this country is paragonimus westermani, although the new name, paragonimus philippinensis, has been proposed instead. the second species of paragonimus, paragonimus siamensis, was reported in cats in 1973. the prevalence of disease in two endemi ... | 1984 | 6542392 |
| humoral immune response of cats to paragonimus infection. | the time course of humoral immune response to paragonimus siamensis was studied in 10 cats experimentally infected with either 30 or 60 matacercariae and the antibody produced was detected by enzyme linked immunosorbent assay (elisa), complement fixation test (cft), and immunoelectrophoresis (iep) test. with elisa and cft, antibodies was detected as early as 2nd week after infection and the cats remained positive throughout the 12 week period of observation. in contrast, the iep test was persist ... | 1981 | 7342322 |
| the natural first intermediate host of paragonimus siamensis (miyazaki and wykoff, 1965) in thailand. | the first intermediate host of six-known the paragonimus species in thailand had not been found until the filopaludina (siamopaludina) martensi martensi snail was discovered to maintain the cercariae of a paragonimus species. an extensive study examined cercarial development through to adult worms by infecting 3 genera of 7 crab species with penetration of cercariae and feeding of snails containing such cercariae. these crabs provided many metacercariae which were fed to cats and bandicoots. the ... | 1994 | 7855641 |
| the karyotype of the lung fluke, paragonimus siamensis. | the karyotype of chromosomes obtained from the germ cells of paragonimus siamensis was analyzed by air-drying technique. the result revealed the diploid number of chromosomes to be 2n=22. the entire chromosomes consisted of one large-sized metacentric, four medium-sized subtelocentrics, three small-sized metacentrics or submetacentrics and three small-sized submeta-centrics or subtelecentrics. the relative arm lengths of the chromosomes were 20.13+/-1.21, 13.16+/-0.42, 11.07+/-0.48, 10.37+/-0.84 ... | 2000 | 11414456 |
| detection of paragonimus heterotremus eggs in experimentally infected cats by a polymerase chain reaction-based method. | a polymerase chain reaction (pcr) procedure for the detection of paragonimus heterotremus eggs in stool samples was developed and compared with stoll's egg count method. the primers were designed on the basis of a previously constructed pph-13-specific dna probe, which produced an approximate 0.5-kb amplified product. this pcr method could detect as few as 5 eggs in 0.6 g of artificially inoculated feces of a healthy control cat or as little as 1 x 10(-4) ng of p. heterotremus genomic dna. the a ... | 2005 | 15856902 |
| paragonimus worm from a new guinea native in 1926. | to reobserve and research the specimen of paragonimus worm found in the left lung of a new guinea native in 1926, which was previously identified as paragonimus westermani kerbert or paragonimus ringeri cobbold. | 2011 | 21771422 |
| molecular identification of paragonimus species by dna pyrosequencing technology. | dna pyrosequencing for pcr amplicons is an attractive strategy for the identification of microorganisms because of its short time performance for large number of samples. in this study, the primers targeting the fragment of its2 region of nuclear ribosomal rna gene were newly developed for pyrosequencing-based identification of 6 paragonimus species, paragonimus bangkokensis, paragonimus harinasutai, paragonimus heterotremus, paragonimus macrorchis, paragonimus siamensis and paragonimus westerma ... | 2013 | 23246361 |