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[rearing and management of chimpanzees for experimental infection with hepatitis b virus (author's transl)].for the purpose of experimental infection with human hepatitis b virus, 14 chimpanzees (pan troglodytes) were delivered to the division of animal research, faculty of medicine, university of tokyo, tokyo. these chimps, 11 males and 3 females, born in the west africa, had been reared for two to six months. several days after delivery, they were anesthetized with ketalar in order to make clinical, bacteriological and parasitological examinations; it was found that one of them was in malnutrition, ...1977558103
growth of enterobius vermicularis in a chimpanzee after anthelmintic treatment.the growth of enterobius vermicularis in a chimpanzee was investigated by observing worms discharged in feces after administration of pyrantel pamoate. just after the final molting, immature adult male pinworms developed to a fully mature stage in 2 wk, after passing through a stage corresponding to the so-called enterobius gregorii, which was surmised to be a younger adult form of e. vermicularis. the frequency distribution of body length forms 2 peaks in both male and female pinworms, with a d ...200312880239
effects of repeated anthelmintic treatment on enterobius vermicularis infection in chimpanzees.effects of repeated treatment with pyrantel pamoate on enterobius vermicularis infection in chimpanzees were assessed by observing worms discharged in the feces after administration of anthelmintic treatment. three of 9 chimpanzees reared in a zoological garden in japan were subjected to fecal worm count and morphometric observation, and all were given oral pyrantel pamoate 6 times at 10-day intervals simultaneously. following the first and second treatments, more than 30,000 pinworms were disch ...200516108565
chimpanzee pinworm, enterobius anthropopitheci (nematoda: oxyuridae), maintained for more than twenty years in captive chimpanzees in japan.the chimpanzee pinworm, enterobius anthropopitheci (gedoelst, 1916), was found in chimpanzees, pan troglodytes, reared in kumamoto primate research park, sanwa kagaku kenkyusho co., ltd., kumamoto, japan, in 2006. because the chimpanzees in this institution originated from chimpanzees imported from africa before 1984, it is considered that e. anthropopitheci infection has persisted for more than 20 yr in the chimpanzees. analysis of pinworm specimens preserved in the institution revealed that tr ...200717918364
gastrointestinal parasites of captive and free-roaming primates at the afi mountain primate conservation area in calabar, nigeria and their zoonotic implications.a study on the gastrointestinal parasites among free-living and captive primates at the afi mountain, primate conservation area in calabar, nigeria was undertaken for the first time to ascertain their zoonotic implications. faecal samples were subjected to direct smear, floatation, quantitative estimation of helminth eggs (epg) and oocysts (opg), larval isolation and identification by modified baerman's technique and oocyst sporulation for specie identification. out of the 108 primates examined, ...201122308652
genetic analysis of enterobius vermicularis isolated from a chimpanzee with lethal hemorrhagic colitis and pathology of the associated lesions.human pinworms, enterobius vermicularis, are normally recognized as minor pathogens. however, a fatal case of human pinworm infection has been reported in a nonhuman primate, a zoo reared chimpanzee. here, we histopathologically examined the lesions in tissues from the deceased chimpanzee and genetically characterized the isolated worms to investigate the pathogenicity and determine the phylogeny. we identified ulcers deep in the submucosa where many parasites were found to have invaded the lami ...201425138069
genetic variation in mitochondrial dna among enterobius vermicularis in denmark.despite being the most prevalent nematode infections of man in western europe and north america, our knowledge of the genetic variability in enterobius vermicularis is fragmented. we here report on a genetic study of pinworms in denmark, performed using the cytochrome oxidase i (cox1) gene, with dna extracted from individual eggs collected from clinical (human) samples. we collected cellophane-tape-test samples positive for pinworm eggs from 14 departments of clinical microbiology in denmark and ...201322906211
characterization of enterobius vermicularis in a human population, employing a molecular-based method from adhesive tape samples.human infection with the parasitic nematode enterobius vermicularis occurs worldwide, particularly in children. although its prevalence may exceed 35% in some parts of the world, molecular studies of e. vermicularis in humans are limited. the aim of the present study was to investigate the genetic variation within e. vermicularis in a human population. for this purpose, 77 adhesive tape samples taken from greek children infested with e. vermicularis were tested. new primers were designed to ampl ...201121458560
mitochondrial cytochrome c oxidase subunit 1 gene and nuclear rdna regions of enterobius vermicularis parasitic in captive chimpanzees with special reference to its relationship with pinworms in humans.sequences of mitochondrial cytochrome c oxidase subunit 1 (co1) gene, nuclear internal transcribed spacer 2 (its2) region of ribosomal dna (rdna), and 5s rdna of enterobius vermicularis from captive chimpanzees in five zoos/institutions in japan were analyzed and compared with those of pinworm eggs from humans in japan. three major types of variants appearing in both co1 and its2 sequences, but showing no apparent connection, were observed among materials collected from the chimpanzees. each one ...200616788831
fatal infection with human pinworm, enterobius vermicularis, in a captive chimpanzee.a fatal infection with human pinworms, enterobius vermicularis, was found in a 26-year-old chimpanzee kept in a zoo. grossly, the animal was highly emaciated, and had severe enteritis with cecal multifocal nodules and severe cholelithiasis. histopathologically, a large number of human pinworms were observed in the nodular lesions in the cecum and intestinal wall. these migrating worms were surrounded by an inflammatory cell infiltration which lacked eosinophils. there were areas of multifocal hy ...200212110054
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