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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 13 (1969), S. 131-142 
    ISSN: 1432-0533
    Keywords: Neuropathy, Chronical ; Hypertrophic Neuritis ; Schwann-Cell ; Onion Bulb ; Electron Microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die wesentlichen Veränderungen bei dem mitgeteilten Fall von chronischer frühinfantiler Neuropathie bestehen in einer Modifikation der Schwann-Zellen, die zur Bildung eines konzentrischen Netzwerkes von Lamellen führt. Dieses wird durch eine doppelkonturierte Hülle der Basalmembran um zahlreiche große bemarkte und unbemarkte Fasern gebildet. Die Anomalien der Markscheiden sowie die Häufigkeit von Desmosomen sind bemerkenswert. Diese Besonderheiten unterscheiden diesen Fall von anderen, bisher beschriebenen chronischen Neuropathien. Trotzdem erscheint es derzeit nicht möglich, eine Aussage über die Spezifität der ultrastrukturellen Befunde am untersuchten Nerven zu treffen.
    Notes: Summary The principal lesion in this case of chronic early infantile neuropathy is a modification of the Schwann cell resulting in the formation of a concentric network of lamellae formed by a double-layered sheet of basement membrane around numerous, large myelinated and unmyelinated fibers. The abnormalities in the myelin sheaths and the frequency of desmosomes are noteworthy. These peculiarities distinguish this case from other chronic neuropathies described up to now. Nevertheless, it is impossible to say at present whether the ultrastructural aspect of the nerve studied here is in any way specific.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 41 (1978), S. 67-72 
    ISSN: 1432-0533
    Keywords: Developing neocortex ; Radial organization ; Developmental pathology ; Neuron ectopia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Reduced size of convolutions and midcortical laminar necrosis are approximately co-extensive in the cerebral hemispheres of a child, one of twins, dying at 18 months. Because the underlying laminar arrangement of neurons and the basic gyral pattern are normal, the cortical damage probably occurred not earlier than the third trimester of gestation. Neurons surviving above and below the zone of tissue necrosis, like their homologs in normal cortex, are entrained in multineuronal radial assemblies. Below the zone of necrosis the relative positions of radially adjacent neurons are unaltered. Above, however, in places where the molecular layer is reduced in width, neurons are displaced radially outward toward the pial surface. In places the pia is breached and bridged by a mesenchymal-glial cicatrix. Where this has happened neurons have migrated beyond the cerebral boundary and have established an ectopia in the subarachnoid compartment. These observations suggest that relatively undifferentiated intracortical neurons are held in radial assemblies by bonds which prevent their tangential displacement. The molecular layer appears to serve as a barrier to their radial displacement.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Mammalian cytochrome c oxidase (COX) catalyses the transfer of reducing equivalents from cytochrome c to molecular oxygen and pumps protons across the inner mitochondrial membrane. Mitochondrial DNA (mtDNA) encodes three COX subunits (I–III) and nuclear DNA (nDNA) encodes ten. In ...
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-0533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Vergleichende morphologische Untersuchung über drei Beobachtungen von zystischer Umwandlung der Großhirnhemisphären. Die beiden ersten Fälle gehen vermutlich auf Schädigungen im zweiten Drittel des Fetallebens zurück und sind den Hydranencephalien bzw. Porencephalien zuzuordnen. Beim dritten Fall handelt es sich um eine Extremform von zystischer Encephalomalacie der weißen Substanz perinataler Genese. Es wird auf die zirkulatorische Genese dieser Encephalopathien hingewiesen und die bei den pränatalen Formen beobachtete Zunahme des Schädelvolumens zu erklären versucht.
    Notes: Résumé Les auteurs rapportent et comparent 3 cas de transformation kystique des hémisphères cérébraux. Les deux premiers datent vraisemblablement du 2e trimestre de la vie foetale et sont à ranger parmi les hydranencéphalies ou les porencéphalies; le 3e est une forme extrême d'encéphalomalacie kystique de la substance blanche d'origine périnatale. Ils apportent des arguments en faveur de la nature circulatoire de ces encéphalopathies et tentent de fournir une explication à l'augmentation du volume cranien observée dans les formes d'origine prénatale.
    Type of Medium: Electronic Resource
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