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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European archives of psychiatry and clinical neuroscience 221 (1976), S. 199-212 
    ISSN: 1433-8491
    Keywords: Intranuclear Inclusions ; Nucleolar Alterations ; Viral Infections ; Encephalitis ; Flaviviruses ; Intranukleäre Einschlußkörperchen ; Nukleolenveränderungen ; Virusinfektionen ; Encephalitis ; Arboviren (Togaviren) der Gruppe B
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei der experimentellen Gelbfieber-Encephalomyelitis der erwachsenen weißen Maus sind intranukleäre Einschlüsse in Nervenzellen, insbesondere in spinalen und bulbären Motoneuronen, ein regelmäßig zu erhebender Befund. Das lichtmikroskopische Erscheinungsbild dieser sog. neuronalen Torres-Körper chen entspricht in allen Einzelheiten den Kriterien, die Cowdry für Kerneinschlüsse vom Typ A angegeben hat. Auf der ultrastrukturellen Ebene stellen sich diese karyoplasmatischen Gebilde als regellos verstreute Krümel dar, die aus einem nahezu amorphen Material von unterschiedlicher Dichte bestehen. Im Gegensatz zu jenen Kerneinschlüssen vom Typ A nach Cowdry, welche bei einigen Infektionen mit Erregern aus der Herpesvirus- und der Paramyxovirusgruppe vorzukommen pflegen, enthalten die neuronalen Torres-Körperchen keinerlei virale Strukturen. Die häufige Vergesellschaftung der neuronalen Torres-Körperchen mit bestimmten Nukleolenveränderungen und schweren tigrolytischen Alterationen legt die Vermutung nahe, daß sie im Gefolge einer virusinduzierten Störung der zellulären Nukleinsäure- und/oder Eiweißsynthese entstehen.
    Notes: Summary In experimental yellow fever virus encephalomyelitis of adult albino mice, the occurrence of intranuclear inclusions within nerve cells, in particular, within spinal and bulbar motoneurons, is a constant finding. The light microscopic features of these so-called neuronal Torres bodies correspond entirely to the criteria laid down by Cowdry for the type A intranuclear inclusions. At the ultrastructural level, these karyoplasmic formations consist of haphazardly distributed patches of an essentially amorphous material of various density. Unlike the Cowdry type A intranuclear inclusions characteristic of several herpesvirus and paramyxovirus infections, neuronal Torres bodies do not contain any viral structures. The frequency with which neuronal Torres bodies, certain nucleolar alterations and severe tigrolytic changes occur together, possibly indicates that this sort of type A intranuclear inclusion developes as a consequence of a virus induced disturbance of the cell nucleic acid and/or protein anabolism.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 167 (1976), S. 563-567 
    ISSN: 1432-0878
    Keywords: Trigeminal ganglion ; Dorsal root ganglia ; Continuous endothelium ; Fenestrated endothelium ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Several fenestrated capillaries were seen in the endoneurium of trigeminal and dorsal root ganglia from two young adult albino rats treated with tetraethylthiuram disulfide. The finding is regarded as normal, although the possibility exists that intoxication with tetraethylthiuram disulfide may have enhanced the intensity and/or rate of this cytologic specialization of some isolated endothelial cells.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0878
    Keywords: Mitochondrial ultrastructure ; White matter astrocytes ; Cortical neurons ; Human brain
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Brain tissue specimens were obtained early post mortem from the frontal lobe of seven unselected elderly subjects known to have been free of neurologic disease. Electron microscopically, two types of intramitochondrial inclusions were seen in four of seven cases. In two cases a few astrocyte mitochondria of the gyral white matter showed dense, elongated inclusions with an ordered linear substructure. These inclusions were, as a rule, accompanied by a row of prismatic cristae. In three cases some nerve cell mitochondria contained amorphous material of medium density and compact appearance. The globular masses often occupied the whole width of the mitochondrion. A relationship between the observed finding and a particular disease or morbid condition was not apparent. The inclusions are regarded as the morphologic substrate of a nonspecific metabolic change or degenerative process of the mitochondrion.
    Type of Medium: Electronic Resource
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