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@article{1299247,
author = {Valigurová, Andrea and Paskerova, Gita G. and Diakin, Andrei and Kováčiková, Magdaléna and Simdyanov, Timur G.},
article_number = {4},
doi = {http://dx.doi.org/10.1371/journal.pone.0125063},
keywords = {actin; Apicomplexa; attachment; coccidia; Cryptosporidium; Eleutheroschizon duboscqi; gregarines; myosin; tubulin; ultrastructure},
language = {eng},
issn = {1932-6203},
journal = {PLOS ONE},
title = {Protococcidian Eleutheroschizon duboscqi, an unusual apicomplexan interconnecting gregarines and cryptosporidia.},
url = {http://www.plosone.org/article/Authors/info:doi/10.1371/journal.pone.0125063},
volume = {10},
year = {2015}
}
TY - JOUR
ID - 1299247
AU - Valigurová, Andrea - Paskerova, Gita G. - Diakin, Andrei - Kováčiková, Magdaléna - Simdyanov, Timur G.
PY - 2015
TI - Protococcidian Eleutheroschizon duboscqi, an unusual apicomplexan interconnecting gregarines and cryptosporidia.
JF - PLOS ONE
VL - 10
IS - 4
SP - "nestránkováno"
EP - "nestránkováno"
PB - Public Library of Science
SN - 19326203
KW - actin
KW - Apicomplexa
KW - attachment
KW - coccidia
KW - Cryptosporidium
KW - Eleutheroschizon duboscqi
KW - gregarines
KW - myosin
KW - tubulin
KW - ultrastructure
UR - http://www.plosone.org/article/Authors/info:doi/10.1371/journal.pone.0125063
L2 - http://www.plosone.org/article/Authors/info:doi/10.1371/journal.pone.0125063
N2 - Study focuses on the attachment strategy, cell structure and the host-parasite interactions of the protococcidian Eleutheroschizon duboscqi, parasitising the polychaete Scoloplos armiger. The attached trophozoites and gamonts of E. duboscqi were detected at different development stages. They develop epicellularly, covered by a host cell-derived parasitophorous sac forming a caudal tipped appendage. Evans blue staining suggests that this tail is protein-rich, supported by the presence of a fibrous substance in this area. Despite the ultrastructural evidence for long filaments in the tail, it stained only weakly for F-actin, while spectrin seemed to accumulate in this area. Attachment apparatus consists of lobes arranged in one (trophozoites) or two (gamonts) circles, crowned by a ring of filamentous fascicles. During trophozoite maturation, the internal space between the parasitophorous sac and parasite turns translucent, the parasite trilaminar pellicle seems to reorganise and is covered by a dense fibrous glycocalyx. The parasite surface is organised in broad folds with grooves in between. Micropores are situated at the bottom of the grooves. A layer of filaments organised in bands, underlying the folds and ending above the attachment fascicles, was detected just beneath the pellicle. Confocal microscopy, along with the application of cytoskeletal drugs confirmed the presence of actin and tubulin polymerised forms in both the parasitophorous sac and the parasite, while myosin labelling was restricted to the sac. Despite positive tubulin labelling, no microtubules were detected in mature stages. The attachment strategy of E. duboscqi shares features with that of cryptosporidia and gregarines, i.e. the parasite itself conspicuously resembles an epicellularly located gregarine, while the parasitophorous sac develops in a similar manner to that in cryptosporidia. Study provides a re-evaluation of epicellular development in apicomplexans.
ER -
VALIGUROVÁ, Andrea, Gita G. PASKEROVA, Andrei DIAKIN, Magdaléna KOVÁČIKOVÁ a Timur G. SIMDYANOV. Protococcidian Eleutheroschizon duboscqi, an unusual apicomplexan interconnecting gregarines and cryptosporidia. \textit{PLOS ONE}. Public Library of Science, roč.~10, č.~4, s.~''nestránkováno'', 27 s. ISSN~1932-6203. doi:10.1371/journal.pone.0125063. 2015.
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