Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord
Identifieur interne : 000239 ( Istex/Corpus ); précédent : 000238; suivant : 000240Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord
Auteurs : Kazuo NagashimaSource :
- Journal of the Neurological Sciences [ 0022-510X ] ; 1979.
English descriptors
- Teeft :
- Anterior funiculus, Astrocyte, Astrocytic, Astrocytic process, Astrocytic processes, Axon, Basement membrane, Blood vessels, Cell biol, Cytoplasmic, Cytoplasmic density, Cytoplasmic process, Cytoplasmic processes, Electron microscopy, Fibril, Free ribosomes, Funiculus, Glial, Glial cells, Glial fibrils, Golgi apparatus, Higher magnification, Intraperiod line, Lamella, Myelin, Myelin lamellae, Myelin sheaths, Myelinated, Myelinated axons, Myelinating, Myelinating cell, Myelinating cells, Myelination, Neurol, Optic nerve, Optic nerves, Outer tongue, Pial, Pial basement membrane, Pial surface, Postnatal, Postnatal development, Ribosome, Spinal, Spinal cord, Spinal cords.
Abstract
Abstract: The anterior funiculus of the spinal cervical cord of post-natal rats was examined ultrastructurally. The myelinating cells found one day after birth contained a large amount of evenly distributed ribosomes up to the outer tongue of mesaxons, representing the cytoplasmic density. These cells were separated by astrocytic processes from the pial basement membrane, even when they were located on the pial surface. Astrocytes contained glial fibrils from one day onwards and often attached their processes to the pial basement membrane. Although the cytoplasmic processes of astrocytes occasionally wrapped axons, they were never shown to form the initial layer of myelin sheaths. However, the tenuous processes of the sub-pial astrocytes were occasionally rolled in myelin lamellae, as if a part of the myelin sheaths was constructed by astrocytic processes. The interpretation for this finding is discussed in relation to function and potency of the astrocytes, and variations and anomalies of nervous ontogeny.
Url:
DOI: 10.1016/0022-510X(79)90218-1
Links to Exploration step
ISTEX:4BF30F632E0E39C946FACAD1DA559CC758B5BC03Le document en format XML
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The myelinating cells found one day after birth contained a large amount of evenly distributed ribosomes up to the outer tongue of mesaxons, representing the cytoplasmic density. These cells were separated by astrocytic processes from the pial basement membrane, even when they were located on the pial surface. Astrocytes contained glial fibrils from one day onwards and often attached their processes to the pial basement membrane. Although the cytoplasmic processes of astrocytes occasionally wrapped axons, they were never shown to form the initial layer of myelin sheaths. However, the tenuous processes of the sub-pial astrocytes were occasionally rolled in myelin lamellae, as if a part of the myelin sheaths was constructed by astrocytic processes. 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(1976)</json:string><json:string>Hildebrand (1971)</json:string><json:string>Mori and Leblond 1970</json:string><json:string>Received 14 September, 1978</json:string><json:string>Knobler et al. 1974, 1976</json:string><json:string>Caley and Maxwell 1968</json:string><json:string>Ross et al. 1962</json:string><json:string>Accepted 23 July, 1979</json:string><json:string>Fujita 1965</json:string><json:string>Bunge 1962; Kruger and Maxwell 1966; Hirano, 1968</json:string><json:string>Fleischhauer and Wartenberg (1967)</json:string><json:string>Narang 1977</json:string></ref_bibl><bibl></bibl></unitex></namedEntities><ark><json:string>ark:/67375/6H6-FQHJ7DTF-7</json:string></ark><categories><wos><json:string>1 - science</json:string><json:string>2 - neurosciences</json:string><json:string>2 - clinical neurology</json:string></wos><scienceMetrix></scienceMetrix><scopus><json:string>1 - Health Sciences</json:string><json:string>2 - Medicine</json:string><json:string>3 - Clinical Neurology</json:string><json:string>1 - Life Sciences</json:string><json:string>2 - Neuroscience</json:string><json:string>3 - Neurology</json:string></scopus><inist><json:string>1 - sciences appliquees, technologies et medecines</json:string><json:string>2 - sciences biologiques et medicales</json:string><json:string>3 - sciences biologiques fondamentales et appliquees. psychologie</json:string></inist></categories><publicationDate>1979</publicationDate><copyrightDate>1979</copyrightDate><doi><json:string>10.1016/0022-510X(79)90218-1</json:string></doi><id>4BF30F632E0E39C946FACAD1DA559CC758B5BC03</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/ark:/67375/6H6-FQHJ7DTF-7/fulltext.pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/ark:/67375/6H6-FQHJ7DTF-7/bundle.zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/ark:/67375/6H6-FQHJ7DTF-7/fulltext.tei"><teiHeader><fileDesc><titleStmt><title level="a">Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher scheme="https://scientific-publisher.data.istex.fr">ELSEVIER</publisher><availability><licence><p>elsevier</p></licence></availability><p scheme="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-HKKZVM7B-M"></p><date>1979</date></publicationStmt><notesStmt><note type="research-article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</note><note type="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note><note>Supported by Deutsche Forschungsgemeinschaft Schwerpunkt Multiple Sklerose und verwandte Erkrankungen.</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a">Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord</title><author xml:id="author-0000"><persName><forename type="first">Kazuo</forename><surname>Nagashima</surname></persName><note type="biography">Alexander von Humboldt Stipendiat. Present address: Department of Pathology, Faculty of Medicine, University of Tokyo; 7-3-1 Hongo, Bunkyo-ku, 113 Tokyo, Japan.</note><affiliation>Alexander von Humboldt Stipendiat. Present address: Department of Pathology, Faculty of Medicine, University of Tokyo; 7-3-1 Hongo, Bunkyo-ku, 113 Tokyo, Japan.</affiliation><affiliation>Institute of Virology and Immunobiology, University of Würzburg, Versbacher Strasse 7, 8700 Würzburg FRG</affiliation></author><idno type="istex">4BF30F632E0E39C946FACAD1DA559CC758B5BC03</idno><idno type="ark">ark:/67375/6H6-FQHJ7DTF-7</idno><idno type="DOI">10.1016/0022-510X(79)90218-1</idno><idno type="PII">0022-510X(79)90218-1</idno></analytic><monogr><title level="j">Journal of the Neurological Sciences</title><title level="j" type="abbrev">JNS</title><idno type="pISSN">0022-510X</idno><idno type="PII">S0022-510X(00)X0454-6</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1979"></date><biblScope unit="volume">44</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="1">1</biblScope><biblScope unit="page" to="12">12</biblScope></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1979</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Abstract: The anterior funiculus of the spinal cervical cord of post-natal rats was examined ultrastructurally. The myelinating cells found one day after birth contained a large amount of evenly distributed ribosomes up to the outer tongue of mesaxons, representing the cytoplasmic density. These cells were separated by astrocytic processes from the pial basement membrane, even when they were located on the pial surface. Astrocytes contained glial fibrils from one day onwards and often attached their processes to the pial basement membrane. Although the cytoplasmic processes of astrocytes occasionally wrapped axons, they were never shown to form the initial layer of myelin sheaths. However, the tenuous processes of the sub-pial astrocytes were occasionally rolled in myelin lamellae, as if a part of the myelin sheaths was constructed by astrocytic processes. The interpretation for this finding is discussed in relation to function and potency of the astrocytes, and variations and anomalies of nervous ontogeny.</p></abstract></profileDesc><revisionDesc><change when="1979-02-12">Modified</change><change when="1979">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/ark:/67375/6H6-FQHJ7DTF-7/fulltext.txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>JNS</jid><aid>79902181</aid><ce:pii>0022-510X(79)90218-1</ce:pii><ce:doi>10.1016/0022-510X(79)90218-1</ce:doi><ce:copyright type="unknown" year="1979"></ce:copyright></item-info><head><ce:article-footnote><ce:label>☆</ce:label><ce:note-para>Supported by Deutsche Forschungsgemeinschaft Schwerpunkt Multiple Sklerose und verwandte Erkrankungen.</ce:note-para></ce:article-footnote><ce:title>Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord</ce:title><ce:author-group><ce:author><ce:given-name>Kazuo</ce:given-name><ce:surname>Nagashima</ce:surname><ce:cross-ref refid="FN1"><ce:sup>∗</ce:sup></ce:cross-ref></ce:author><ce:affiliation><ce:textfn>Institute of Virology and Immunobiology, University of Würzburg, Versbacher Strasse 7, 8700 Würzburg FRG</ce:textfn></ce:affiliation><ce:footnote id="FN1"><ce:label>∗</ce:label><ce:note-para>Alexander von Humboldt Stipendiat. Present address: Department of Pathology, Faculty of Medicine, University of Tokyo; 7-3-1 Hongo, Bunkyo-ku, 113 Tokyo, Japan.</ce:note-para></ce:footnote></ce:author-group><ce:date-received day="14" month="9" year="1978"></ce:date-received><ce:date-revised day="12" month="2" year="1979"></ce:date-revised><ce:date-accepted day="23" month="7" year="1979"></ce:date-accepted><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>The anterior funiculus of the spinal cervical cord of post-natal rats was examined ultrastructurally. The myelinating cells found one day after birth contained a large amount of evenly distributed ribosomes up to the outer tongue of mesaxons, representing the cytoplasmic density. These cells were separated by astrocytic processes from the pial basement membrane, even when they were located on the pial surface. Astrocytes contained glial fibrils from one day onwards and often attached their processes to the pial basement membrane. Although the cytoplasmic processes of astrocytes occasionally wrapped axons, they were never shown to form the initial layer of myelin sheaths. However, the tenuous processes of the sub-pial astrocytes were occasionally rolled in myelin lamellae, as if a part of the myelin sheaths was constructed by astrocytic processes. The interpretation for this finding is discussed in relation to function and potency of the astrocytes, and variations and anomalies of nervous ontogeny.</ce:simple-para></ce:abstract-sec></ce:abstract></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord</title></titleInfo><name type="personal"><namePart type="given">Kazuo</namePart><namePart type="family">Nagashima</namePart><affiliation>Institute of Virology and Immunobiology, University of Würzburg, Versbacher Strasse 7, 8700 Würzburg FRG</affiliation><description>Alexander von Humboldt Stipendiat. Present address: Department of Pathology, Faculty of Medicine, University of Tokyo; 7-3-1 Hongo, Bunkyo-ku, 113 Tokyo, Japan.</description><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1979</dateIssued><dateModified encoding="w3cdtf">1979-02-12</dateModified><copyrightDate encoding="w3cdtf">1979</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><abstract lang="en">Abstract: The anterior funiculus of the spinal cervical cord of post-natal rats was examined ultrastructurally. The myelinating cells found one day after birth contained a large amount of evenly distributed ribosomes up to the outer tongue of mesaxons, representing the cytoplasmic density. These cells were separated by astrocytic processes from the pial basement membrane, even when they were located on the pial surface. Astrocytes contained glial fibrils from one day onwards and often attached their processes to the pial basement membrane. Although the cytoplasmic processes of astrocytes occasionally wrapped axons, they were never shown to form the initial layer of myelin sheaths. However, the tenuous processes of the sub-pial astrocytes were occasionally rolled in myelin lamellae, as if a part of the myelin sheaths was constructed by astrocytic processes. 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