Fecal-oral transmission of the cyst form of Blastocystis hominis in rats

@article{Yoshikawa2004FecaloralTO,
  title={Fecal-oral transmission of the cyst form of Blastocystis hominis in rats},
  author={Hisao Yoshikawa and Kumi Yoshida and A Nakajima and Kimie Yamanari and Satoru Iwatani and Isao Kimata},
  journal={Parasitology Research},
  year={2004},
  volume={94},
  pages={391-396}
}
The infectivity of two Blastocystis hominis strains, RN94-9 and NIH:1295:1, was examined in 3-week-old SPF Wistar rats. The NIH:1295:1 strain, originally isolated from a guinea pig, was only able to infect rats via intracecal inoculation of the cultured organisms, while the RN94-9 strain, originally isolated from a laboratory rat, was able to infect rats by oral inoculation of the cultures due to the presence of a cystic form in the in vitro culture. Since many cysts were discharged in the… Expand
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References

SHOWING 1-10 OF 29 REFERENCES
Blastocystis hominis: pathogenic potential in human patients and in gnotobiotes.
TLDR
Germfree guinea pigs inoculated orally and intracecally with Blastocystis hominis and the enteric flora from symptomatic patients believe B. hominis may occasionally be related causally to the production of such symptoms by a mechanism not completely understandable. Expand
Experimental Blastocystis hominis infection in laboratory mice
TLDR
Although B. hominis is not invasive, it is capable of causing pathogenesis in BALB/c mice and is confirmed to be responsible for external transmission by the fecal-oral route. Expand
Evidence of an epidemic of Blastocystis hominis infections in preschool children in northern Jordan
  • L. Nimri
  • Medicine
  • Journal of clinical microbiology
  • 1993
TLDR
The concept of B. hominis pathogenicity in children with gastroenteritis is supported, since several cases were associated with Giardia infection. Expand
PCR-based identification of zoonotic isolates of Blastocystis from mammals and birds.
TLDR
PCR-based genotype classification using known sequence-tagged site (STS) primers allows identification of zoonotic isolates of animal origin and places the unknown genotype of human origin into an additional clade in the small-subunit rRNA gene phylogeny. Expand
In vitro encystation and excystation of Blastocystis ratti.
TLDR
Glycogen deposits were prominent throughout the excystation process and the cyst enlarged in size and some vacuoles appeared within the condensed cytoplasm, leading to central body formation. Expand
Transmission of intestinal blastocystosis related to the quality of drinking water.
TLDR
The data indicated that blastocystosis in this army population was significantly linked to the quality of drinking water and, after being adjusted for potential confounders, consuming neither filtered nor boiled water was independently associated with blastocyStosis. Expand
Evidence of waterborne transmission of Blastocystis hominis.
TLDR
Significant increased risk of being infection with B. hominis was associated with being a private, working in a specific unit, and consuming unboiled drinking water, and waterborne transmission of B.hominis infection was indicated at this army base, however, other modes of transmission cannot be ruled out. Expand
Blastocystis in animal handlers
TLDR
The in vitro culture method used in the study detected that people who work closely with animals do stand at risk of acquiring Blastocystis infection. Expand
Ultrastructure of Blastocystis hominis cysts.
Blastocystis hominis cysts were concentrated from human faeces by repeated washing in distilled water and centrifugation on Ficoll-Paque. This procedure gave a concentrated suspension of cystsExpand
Genomic Analysis of Blastocystis hominisStrains Isolated from Two Long-Term Health Care Facilities
TLDR
This study presents the first molecular evidence of possible human-to-human B. hominisinfection between and/or among two small communities. Expand
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