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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Der Pathologe 17 (1996), S. 462-466 
    ISSN: 1432-1963
    Keywords: Schlüsselwörter Tuberöse Sklerose ; Polyzystische Nierenerkrankung ; Riesenzellastrozytom ; Fetale Rhabdomyome des Herzens ; Key words Tuberous sclerosis ; Polycystic kidney disease ; Giant cell astrocytoma ; Fetal rhabdomyoma of the heart
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Tuberous sclerosis (McKusick number: 19110) is well documented as an inheritable autosomal dominant disorder. On the occasion of results of an autopsy of a male fetus (1950 g, 29th gestational week) we report on the very early onset of a giant cell astrocytoma (microcalzified focally) and a cystic kidney disorder which in association with this phacomatosis is described first for this age. Thus, based on sonography there is a new differential diagnosis for the weighty prenatal diagnosis of a “Potter syndrome” or of “cystic kidneys”. Moreover, on a chromosomal level we discuss possible connections between tuberous sklerosis and distinct forms of autosomal dominant polycystic kidney disease, ADPKD.
    Notes: Zusammenfassung Die tuberöse Hirnsklerose (McKusick-Nummer: 19110) ist ein gut untersuchtes autosomal-dominant vererbtes Krankheitsbild. Anhand des Autopsiebefundes eines 1950 g schweren, männlichen Föten in der 29. Schwangerschaftswoche wird das sehr frühe Auftreten eines herdförmig mikrokalzifizierten Riesenzellastrozytoms und von zystischen Nierenveränderungen (letztere u. E. erstmals bei dieser Phakomatose für dieses Lebensalter beschrieben) dargestellt. Hieraus ergibt sich eine neue Differentialdiagnose für die folgenschwere pränatale sonographische Diagnose des „Potter-Syndroms“ oder der „Zystennieren“. Außerdem werden mögliche chromosomale Zusammenhänge der tuberösen Sklerose mit bestimmten Formen der „autosomal dominant polycystic kidney disease“ (ADPKD) diskutiert.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0878
    Keywords: Serotonin (5HT) ; Hibernation ; Computerized image analysis ; Raphe nuclei ; Suprachiasmatic nucleus ; Spermophilus richardsonii (Rodentia)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In the suprachiasmatic nucleus (NSC) of hibernating and non-hibernating ground squirrels, the distribution of serotonin-immunoreactive (5HT-IR) fibers was studied by the use of the peroxidase-antiperoxidase technique. The cytology of perikarya giving rise to these suprachiasmatic 5HT-IR fibers was investigated in the anterior raphe nuclei. Differences in the immunoreactivity of suprachiasmatic fibers between hibernating and non-hibernating ground squirrels were determined by digital image analysis. The cellular activity was determined densitometrically after RNA-staining in anterior raphe neurons and suprachiasmatic perikarya. Abundant 5HT-IR fibers were observed in the medial and ventromedial portions of the NSC. Frequently, the fibers were found in close contact with perikarya of suprachiasmatic neurons. The central portion of the nucleus and the surrounding hypothalamic areas contained only a few scattered 5HT-IR fibers. Inside the raphe nuclei, 5HT-IR fibers and perikarya formed a dense network. In hibernating ground squirrels, the immunoreactivity to serotonin was approximately 45% higher than in non-hibernating controls. This difference is in accordance with signs of higher neuronal activity (40% higher RNA-content, 20% larger cell nuclei) in 5HT-IR perikarya of the raphe nucleus and the persisting activity of the NSC during hibernation; the activity of other brain regions dropped conspicuously in torpid animals.
    Type of Medium: Electronic Resource
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