Nerve fibre interaction with large ganglion cells in the human spiral ganglion
Identifieur interne : 002174 ( Main/Exploration ); précédent : 002173; suivant : 002175Nerve fibre interaction with large ganglion cells in the human spiral ganglion
Auteurs : Helge Rask-Andersen [Suède] ; Sven Tylstedt [Suède] ; Anders Kinnefors [Suède] ; Anneliese Schrott-Fischer [Autriche]Source :
- Auris Nasus Larynx [ 0385-8146 ] ; 1997.
English descriptors
- KwdEn :
- Acta otolaryngol, Asymmetric densities, Asymmetric density, Auris, Auris nasus larynx, Cell bodies, Contact sites, Dendritic processes, Electric activity, Electric transmission, Elsevier science ireland, Fibre, Ganglion, Ganglion cell, Ganglion cells, Higher magnification, Human spiral ganglion, Human spiral ganglions, Inner hair cells, Intercellular cleft, Intercellular distance, Intracellular face, Intraganglionic spiral bundle, Kimura, Large cells, Large ganglion cells, Large neurons, Large spiral ganglion cells, Larynx, Light microscope, Membrane, Membrane specializations, Mitochondrion, Nasus, Nasus larynx, Nerve fiber, Nerve fibers, Nerve fibre junctions, Nerve fibres, Nerve junctions, Nerve terminal, Neuron, Normal hearing, Olivocochlear bundle, Outer hair cells, Pentalaminar structure, Present study, Proc nat1 acad, Same schwann cells, Schwann, Schwann cell layer, Serial sectioning, Several mitochondria, Small cells, Spiral ganglion, Synaptic, Synaptic contacts, Synaptic vesicles, Tissue specimens, Ultrastructure, Unmyelinated, Unmyelinated nerve fibre, Vesicle.
- Teeft :
- Acta otolaryngol, Asymmetric densities, Asymmetric density, Auris, Auris nasus larynx, Cell bodies, Contact sites, Dendritic processes, Electric activity, Electric transmission, Elsevier science ireland, Fibre, Ganglion, Ganglion cell, Ganglion cells, Higher magnification, Human spiral ganglion, Human spiral ganglions, Inner hair cells, Intercellular cleft, Intercellular distance, Intracellular face, Intraganglionic spiral bundle, Kimura, Large cells, Large ganglion cells, Large neurons, Large spiral ganglion cells, Larynx, Light microscope, Membrane, Membrane specializations, Mitochondrion, Nasus, Nasus larynx, Nerve fiber, Nerve fibers, Nerve fibres, Nerve junctions, Nerve terminal, Neuron, Normal hearing, Olivocochlear bundle, Outer hair cells, Pentalaminar structure, Present study, Proc nat1 acad, Same schwann cells, Schwann, Schwann cell layer, Serial sectioning, Several mitochondria, Small cells, Spiral ganglion, Synaptic, Synaptic contacts, Synaptic vesicles, Tissue specimens, Unmyelinated, Unmyelinated nerve fibre, Vesicle.
Abstract
Abstract: A TEM study was performed on freshly fixed human spiral ganglions (HSG) biopsied during skull base surgery. Well preserved tissue specimens were obtained for ultrastructural analysis. The investigation revealed that nerve fibres frequently form contacts with the large ganglion cells (type I cells). In the areas of contact, membrane specializations occurred, consisting of symmetric or asymmetric densities often alternating from one cell to the other with a reduced intercellular distance ( ~ 10 nm). High power TEM showed the intercellular cleft to contain an extra dense line resulting in a pentalaminar structure. The dense line appeared on the side of the membrane protein concentration. Protein densities jutted into the cytoplasm along the intracellular face spreading into a diffuse cytoplasmic web physically related to accumulating mitochondria. This indicated a concentration of oxygen-dependant metabolic activity in these regions. It is believed that the nerve junctions are involved in electric transmission between type I ganglion cells. The neural junctions were morphologically different from synaptic contacts between small human ganglion cells (type II cells) and nerve fibres which have been suspected of sharing the olivocochlear bundle as their origin.
Url:
DOI: 10.1016/S0385-8146(96)00039-9
Affiliations:
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cells</term><term>Large ganglion cells</term><term>Large neurons</term><term>Large spiral ganglion cells</term><term>Larynx</term><term>Light microscope</term><term>Membrane</term><term>Membrane specializations</term><term>Mitochondrion</term><term>Nasus</term><term>Nasus larynx</term><term>Nerve fiber</term><term>Nerve fibers</term><term>Nerve fibre junctions</term><term>Nerve fibres</term><term>Nerve junctions</term><term>Nerve terminal</term><term>Neuron</term><term>Normal hearing</term><term>Olivocochlear bundle</term><term>Outer hair cells</term><term>Pentalaminar structure</term><term>Present study</term><term>Proc nat1 acad</term><term>Same schwann cells</term><term>Schwann</term><term>Schwann cell layer</term><term>Serial sectioning</term><term>Several mitochondria</term><term>Small cells</term><term>Spiral ganglion</term><term>Synaptic</term><term>Synaptic contacts</term><term>Synaptic vesicles</term><term>Tissue specimens</term><term>Ultrastructure</term><term>Unmyelinated</term><term>Unmyelinated nerve fibre</term><term>Vesicle</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Acta otolaryngol</term><term>Asymmetric densities</term><term>Asymmetric density</term><term>Auris</term><term>Auris nasus larynx</term><term>Cell bodies</term><term>Contact sites</term><term>Dendritic processes</term><term>Electric activity</term><term>Electric transmission</term><term>Elsevier science ireland</term><term>Fibre</term><term>Ganglion</term><term>Ganglion cell</term><term>Ganglion cells</term><term>Higher magnification</term><term>Human spiral ganglion</term><term>Human spiral ganglions</term><term>Inner hair cells</term><term>Intercellular cleft</term><term>Intercellular distance</term><term>Intracellular face</term><term>Intraganglionic spiral bundle</term><term>Kimura</term><term>Large cells</term><term>Large ganglion cells</term><term>Large neurons</term><term>Large spiral ganglion 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ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: A TEM study was performed on freshly fixed human spiral ganglions (HSG) biopsied during skull base surgery. Well preserved tissue specimens were obtained for ultrastructural analysis. The investigation revealed that nerve fibres frequently form contacts with the large ganglion cells (type I cells). In the areas of contact, membrane specializations occurred, consisting of symmetric or asymmetric densities often alternating from one cell to the other with a reduced intercellular distance ( ~ 10 nm). High power TEM showed the intercellular cleft to contain an extra dense line resulting in a pentalaminar structure. The dense line appeared on the side of the membrane protein concentration. Protein densities jutted into the cytoplasm along the intracellular face spreading into a diffuse cytoplasmic web physically related to accumulating mitochondria. This indicated a concentration of oxygen-dependant metabolic activity in these regions. It is believed that the nerve junctions are involved in electric transmission between type I ganglion cells. The neural junctions were morphologically different from synaptic contacts between small human ganglion cells (type II cells) and nerve fibres which have been suspected of sharing the olivocochlear bundle as their origin.</div></front></TEI><affiliations><list><country><li>Autriche</li><li>Suède</li></country></list><tree><country name="Suède"><noRegion><name sortKey="Rask Andersen, Helge" sort="Rask Andersen, Helge" uniqKey="Rask Andersen H" first="Helge" last="Rask-Andersen">Helge Rask-Andersen</name></noRegion><name sortKey="Kinnefors, Anders" sort="Kinnefors, Anders" uniqKey="Kinnefors A" first="Anders" last="Kinnefors">Anders Kinnefors</name><name sortKey="Tylstedt, Sven" sort="Tylstedt, Sven" uniqKey="Tylstedt S" first="Sven" last="Tylstedt">Sven Tylstedt</name></country><country name="Autriche"><noRegion><name sortKey="Schrott Fischer, Anneliese" sort="Schrott Fischer, Anneliese" uniqKey="Schrott Fischer A" first="Anneliese" last="Schrott-Fischer">Anneliese Schrott-Fischer</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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