Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord
Identifieur interne : 001736 ( Main/Exploration ); précédent : 001735; suivant : 001737Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord
Auteurs : Kazuo Nagashima [Allemagne]Source :
- 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
Affiliations:
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Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord</title><author><name sortKey="Nagashima, Kazuo" sort="Nagashima, Kazuo" uniqKey="Nagashima K" first="Kazuo" last="Nagashima">Kazuo Nagashima</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:4BF30F632E0E39C946FACAD1DA559CC758B5BC03</idno><date when="1979" year="1979">1979</date><idno type="doi">10.1016/0022-510X(79)90218-1</idno><idno type="url">https://api.istex.fr/ark:/67375/6H6-FQHJ7DTF-7/fulltext.pdf</idno><idno type="wicri:Area/Istex/Corpus">000239</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000239</idno><idno type="wicri:Area/Istex/Curation">000219</idno><idno type="wicri:Area/Istex/Checkpoint">000841</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000841</idno><idno type="wicri:doubleKey">0022-510X:1979:Nagashima K:ultrastructural:study:of</idno><idno type="wicri:Area/Main/Merge">001767</idno><idno type="wicri:Area/Main/Curation">001736</idno><idno type="wicri:Area/Main/Exploration">001736</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Ultrastructural study of myelinating cells and sub-pial astrocytes in developing rat spinal cord</title><author><name sortKey="Nagashima, Kazuo" sort="Nagashima, Kazuo" uniqKey="Nagashima K" first="Kazuo" last="Nagashima">Kazuo Nagashima</name><affiliation wicri:level="1"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Institute of Virology and Immunobiology, University of Würzburg, Versbacher Strasse 7</wicri:regionArea><wicri:noRegion>Versbacher Strasse 7</wicri:noRegion><wicri:noRegion>Versbacher Strasse 7</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of the Neurological Sciences</title><title level="j" type="abbrev">JNS</title><idno type="ISSN">0022-510X</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1979">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><idno type="ISSN">0022-510X</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-510X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="Teeft" xml:lang="en"><term>Anterior funiculus</term><term>Astrocyte</term><term>Astrocytic</term><term>Astrocytic process</term><term>Astrocytic processes</term><term>Axon</term><term>Basement membrane</term><term>Blood vessels</term><term>Cell biol</term><term>Cytoplasmic</term><term>Cytoplasmic density</term><term>Cytoplasmic process</term><term>Cytoplasmic processes</term><term>Electron microscopy</term><term>Fibril</term><term>Free ribosomes</term><term>Funiculus</term><term>Glial</term><term>Glial cells</term><term>Glial fibrils</term><term>Golgi apparatus</term><term>Higher magnification</term><term>Intraperiod line</term><term>Lamella</term><term>Myelin</term><term>Myelin lamellae</term><term>Myelin sheaths</term><term>Myelinated</term><term>Myelinated axons</term><term>Myelinating</term><term>Myelinating cell</term><term>Myelinating cells</term><term>Myelination</term><term>Neurol</term><term>Optic nerve</term><term>Optic nerves</term><term>Outer tongue</term><term>Pial</term><term>Pial basement membrane</term><term>Pial surface</term><term>Postnatal</term><term>Postnatal development</term><term>Ribosome</term><term>Spinal</term><term>Spinal cord</term><term>Spinal cords</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml: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. The interpretation for this finding is discussed in relation to function and potency of the astrocytes, and variations and anomalies of nervous ontogeny.</div></front></TEI><affiliations><list><country><li>Allemagne</li></country></list><tree><country name="Allemagne"><noRegion><name sortKey="Nagashima, Kazuo" sort="Nagashima, Kazuo" uniqKey="Nagashima K" first="Kazuo" last="Nagashima">Kazuo Nagashima</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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