Cryptosporidia: epicellular parasites embraced by the host cell membrane
Jazyk angličtina Země Anglie, Velká Británie Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
18158154
DOI
10.1016/j.ijpara.2007.11.003
PII: S0020-7519(07)00395-5
Knihovny.cz E-zdroje
- MeSH
- buněčná membrána parazitologie ultrastruktura MeSH
- Cryptosporidium růst a vývoj ultrastruktura MeSH
- interakce hostitele a parazita fyziologie MeSH
- mikroskopie elektronová rastrovací MeSH
- žáby parazitologie MeSH
- žaludeční sliznice parazitologie ultrastruktura MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
The ultrastructure of two gastric cryptosporidia, Cryptosporidium muris from experimentally infected rodents (Mastomys natalensis) and Cryptosporidium sp. 'toad' from naturally infected toads (Duttaphrynus melanostictus), was studied using electron microscopy. Observations presented herein allowed us to map ultrastructural aspects of the cryptosporidian invasion process and the origin of a parasitophorous sac. Invading parasites attach to the host cell, followed by gradual envelopment, with the host's cell membrane folds, eventually forming the parasitophorous sac. Cryptosporidian developmental stages remain epicellular during the entire life cycle. The parasite development is illustrated in detail using high resolution field emission scanning electron microscopy. This provides a new insight into the ultrastructural detail of host-parasite interactions and species-specific differences manifested in frequency of detachment of the parasitophorous sac, radial folds of the parasitophorous sac and stem-formation of the parasitised host cell.
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