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  • 1
    ISSN: 1432-1106
    Schlagwort(e): Cortical malformation ; Status verrucosus ; Focal cortical dysplasia ; Porencephaly ; Rat
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Different types of cortical malformation were produced, following focal cortical freezing, electrocoagulation, focal cortical aspiration or gentle brushing of uncovered meninges, in newborn or 1-to 3-day-old rats. Malformations included laminar necrosis of the cerebral cortex, status verrucosus, focal cortical dysplasia reminiscent of microgyria, and porencephaly. Similar procedures from postnatal day 4 onwards, at a time when a reactive astrogliosis is possible, produced cavitating infarcts and tissue scars. Cytoarchitectonic studies revealed an abnormal distribution of different types of pyramidal and nonpyramidal neurons in these malformations. These indicated three subtypes of focal cortical dysplasia, which probably depend on different pathogenic mechanisms. Autoradiographic studies with [3H] methylthymidine showed normal positioning of late-generated neuroblasts in the cerebral cortex, thus suggesting preserved migration. The present experimentally induced cortical malformations are useful models of similar cortical abnormalities in humans.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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