Ultrastructure of oncosphere and early stages of metacestode development of Echinococcus granulosus
The ultrastructure of the oncospheres and developing metacestodes in vitro of Echinococcus granulosus was studied with emphasis on the origin of the laminated layer. The activated oncospheres measured 28 μm ( S.D. = 1.83 ), and by day 5 of in vitro culture the metacestodes attained diameters up to 5...
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| Veröffentlicht in: | International journal for parasitology 1994-08, Vol.24 (5), p.623-635 |
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| container_title | International journal for parasitology |
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| creator | Holcman, B. Heath, D.D. Shaw, R.J. |
| description | The ultrastructure of the oncospheres and developing metacestodes
in vitro of
Echinococcus granulosus was studied with emphasis on the origin of the laminated layer. The activated oncospheres measured 28 μm (
S.D.
= 1.83
), and by day 5 of
in vitro culture the metacestodes attained diameters up to 52 μm (
S.D.
= 2.66
). The oncospheral plasma membrane of the tegument appeared to be formed by a microtubular cytoskeleton arranged in a predetermined pattern. By day 2 there were three main types of vesicles in the perikaryon: Vd, Vg
1 and Vg
2. Vesicles appeared to be synthesized in the perikaryon and continuously transported to the periphery, where the Vd vesicles could contribute to the ground substance of the syncytial tegument. We suggest that the Vg
1 and Vg
2 vesicles contribute to the laminated layer where, by day 5, they were seen in increased density and forming aggregations on the outer border. |
| doi_str_mv | 10.1016/0020-7519(94)90114-7 |
| format | Article |
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in vitro of
Echinococcus granulosus was studied with emphasis on the origin of the laminated layer. The activated oncospheres measured 28 μm (
S.D.
= 1.83
), and by day 5 of
in vitro culture the metacestodes attained diameters up to 52 μm (
S.D.
= 2.66
). The oncospheral plasma membrane of the tegument appeared to be formed by a microtubular cytoskeleton arranged in a predetermined pattern. By day 2 there were three main types of vesicles in the perikaryon: Vd, Vg
1 and Vg
2. Vesicles appeared to be synthesized in the perikaryon and continuously transported to the periphery, where the Vd vesicles could contribute to the ground substance of the syncytial tegument. We suggest that the Vg
1 and Vg
2 vesicles contribute to the laminated layer where, by day 5, they were seen in increased density and forming aggregations on the outer border.</description><identifier>ISSN: 0020-7519</identifier><identifier>EISSN: 1879-0135</identifier><identifier>DOI: 10.1016/0020-7519(94)90114-7</identifier><identifier>PMID: 7928063</identifier><identifier>CODEN: IJPYBT</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Animals ; Biological and medical sciences ; cytoskeleton ; Echinococcus - ultrastructure ; Echinococcus granulosus ; Fundamental and applied biological sciences. Psychology ; Invertebrates ; laminated layer ; Life cycle. Embryology. Development ; metacestode ; Microscopy, Electron ; Microvilli - ultrastructure ; Nemathelminthia. Plathelmintha ; oncosphere ; Ovum - ultrastructure ; Physiology. Development ; secretory vesicles ; tegument</subject><ispartof>International journal for parasitology, 1994-08, Vol.24 (5), p.623-635</ispartof><rights>1994</rights><rights>1994 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c452t-67841da07698b3a1058f298983ed720264e0c2f4c05618968e74cc58abe865c53</citedby><cites>FETCH-LOGICAL-c452t-67841da07698b3a1058f298983ed720264e0c2f4c05618968e74cc58abe865c53</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/0020-7519(94)90114-7$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27911,27912,45982</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4259740$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/7928063$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Holcman, B.</creatorcontrib><creatorcontrib>Heath, D.D.</creatorcontrib><creatorcontrib>Shaw, R.J.</creatorcontrib><title>Ultrastructure of oncosphere and early stages of metacestode development of Echinococcus granulosus</title><title>International journal for parasitology</title><addtitle>Int J Parasitol</addtitle><description>The ultrastructure of the oncospheres and developing metacestodes
in vitro of
Echinococcus granulosus was studied with emphasis on the origin of the laminated layer. The activated oncospheres measured 28 μm (
S.D.
= 1.83
), and by day 5 of
in vitro culture the metacestodes attained diameters up to 52 μm (
S.D.
= 2.66
). The oncospheral plasma membrane of the tegument appeared to be formed by a microtubular cytoskeleton arranged in a predetermined pattern. By day 2 there were three main types of vesicles in the perikaryon: Vd, Vg
1 and Vg
2. Vesicles appeared to be synthesized in the perikaryon and continuously transported to the periphery, where the Vd vesicles could contribute to the ground substance of the syncytial tegument. We suggest that the Vg
1 and Vg
2 vesicles contribute to the laminated layer where, by day 5, they were seen in increased density and forming aggregations on the outer border.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>cytoskeleton</subject><subject>Echinococcus - ultrastructure</subject><subject>Echinococcus granulosus</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Invertebrates</subject><subject>laminated layer</subject><subject>Life cycle. Embryology. Development</subject><subject>metacestode</subject><subject>Microscopy, Electron</subject><subject>Microvilli - ultrastructure</subject><subject>Nemathelminthia. Plathelmintha</subject><subject>oncosphere</subject><subject>Ovum - ultrastructure</subject><subject>Physiology. Development</subject><subject>secretory vesicles</subject><subject>tegument</subject><issn>0020-7519</issn><issn>1879-0135</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kE1r3DAQhkVpSTZp_0EDPoSSHtxKsj4vhRKStBDopTkL7XicuNjWRiMH8u9rd5c99jQM7_MOw8PYR8G_CC7MV84lr60W_sqrz54LoWr7hm2Es77motFv2eaInLIzoj-cC90odcJOrJeOm2bD4GEoOVLJM5Q5Y5W6Kk2QaPeEyxantsKYh9eKSnxEWuMRSwSkklqsWnzBIe1GnMoa3cBTPyVIADNVjzlO85BopvfsXRcHwg-Hec4ebm9-X_-o73_d_bz-fl-D0rLUxjol2sit8W7bRMG166R33jXYWsmlUchBdgq4NsJ549AqAO3iFp3RoJtz9ml_d5fT87y8GMaeAIchTphmCtZYJV3jF1DtQciJKGMXdrkfY34NgofVbVjFhVVc8Cr8cxvsUrs43J-3I7bH0kHmkl8e8kgQh24RAD0dMSW1t4ov2Lc9houLlx5zIOhxAmz7jFBCm_r___EXrcCV5g</recordid><startdate>19940801</startdate><enddate>19940801</enddate><creator>Holcman, B.</creator><creator>Heath, D.D.</creator><creator>Shaw, R.J.</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19940801</creationdate><title>Ultrastructure of oncosphere and early stages of metacestode development of Echinococcus granulosus</title><author>Holcman, B. ; Heath, D.D. ; Shaw, R.J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c452t-67841da07698b3a1058f298983ed720264e0c2f4c05618968e74cc58abe865c53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>cytoskeleton</topic><topic>Echinococcus - ultrastructure</topic><topic>Echinococcus granulosus</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Invertebrates</topic><topic>laminated layer</topic><topic>Life cycle. Embryology. Development</topic><topic>metacestode</topic><topic>Microscopy, Electron</topic><topic>Microvilli - ultrastructure</topic><topic>Nemathelminthia. Plathelmintha</topic><topic>oncosphere</topic><topic>Ovum - ultrastructure</topic><topic>Physiology. Development</topic><topic>secretory vesicles</topic><topic>tegument</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Holcman, B.</creatorcontrib><creatorcontrib>Heath, D.D.</creatorcontrib><creatorcontrib>Shaw, R.J.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>International journal for parasitology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Holcman, B.</au><au>Heath, D.D.</au><au>Shaw, R.J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ultrastructure of oncosphere and early stages of metacestode development of Echinococcus granulosus</atitle><jtitle>International journal for parasitology</jtitle><addtitle>Int J Parasitol</addtitle><date>1994-08-01</date><risdate>1994</risdate><volume>24</volume><issue>5</issue><spage>623</spage><epage>635</epage><pages>623-635</pages><issn>0020-7519</issn><eissn>1879-0135</eissn><coden>IJPYBT</coden><abstract>The ultrastructure of the oncospheres and developing metacestodes
in vitro of
Echinococcus granulosus was studied with emphasis on the origin of the laminated layer. The activated oncospheres measured 28 μm (
S.D.
= 1.83
), and by day 5 of
in vitro culture the metacestodes attained diameters up to 52 μm (
S.D.
= 2.66
). The oncospheral plasma membrane of the tegument appeared to be formed by a microtubular cytoskeleton arranged in a predetermined pattern. By day 2 there were three main types of vesicles in the perikaryon: Vd, Vg
1 and Vg
2. Vesicles appeared to be synthesized in the perikaryon and continuously transported to the periphery, where the Vd vesicles could contribute to the ground substance of the syncytial tegument. We suggest that the Vg
1 and Vg
2 vesicles contribute to the laminated layer where, by day 5, they were seen in increased density and forming aggregations on the outer border.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><pmid>7928063</pmid><doi>10.1016/0020-7519(94)90114-7</doi><tpages>13</tpages></addata></record> |
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| ispartof | International journal for parasitology, 1994-08, Vol.24 (5), p.623-635 |
| issn | 0020-7519 1879-0135 |
| language | eng |
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| subjects | Animals Biological and medical sciences cytoskeleton Echinococcus - ultrastructure Echinococcus granulosus Fundamental and applied biological sciences. Psychology Invertebrates laminated layer Life cycle. Embryology. Development metacestode Microscopy, Electron Microvilli - ultrastructure Nemathelminthia. Plathelmintha oncosphere Ovum - ultrastructure Physiology. Development secretory vesicles tegument |
| title | Ultrastructure of oncosphere and early stages of metacestode development of Echinococcus granulosus |
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