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  • Articles: DFG German National Licenses  (2)
  • Cerebral tissue  (1)
  • Peripheral nerve  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 45 (1979), S. 53-59 
    ISSN: 1432-0533
    Keywords: Tangier disease ; Peripheral nerve ; Electron microscopy ; Cytometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A sural nerve biopsy was performed in a 55-year-old male patient with Tangier disease (familiallipoprotein deficiency). Light-microscopy showed an increase in the endoneural connective tissue and a loss of nerve fibers indicating a chronic peripheral neuropathy. Electron-microscopy revealed an accumulation of lipid droplets within Schwann cells of myelinated and unmyelinated nerve fibers. When compared with age-matched controls the myelinated fiber density was reduced with a relative preponderance of small myelinated fibers. In addition, distributional cytometric studies of nerve vibers in relation to the perineurium and endoneurial capillaries showed: Contrary to 4.6–7.5 μm thick nerve fibers, which accumulated in the center of the nerve fascicle, small (0.5–4.5 μm) and large (7.6–10.0 μm) fibers lay nearby the perineurium. The measured increase in small myelinated nerve fibers around endoneurial capillaries may be explained as a sign of regeneration.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 34 (1976), S. 149-155 
    ISSN: 1432-0533
    Keywords: Alanine ; Alanine aminotransferase activity ; Proliferating macroglia ; Cerebral tissue
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In the nerve tissue with proliferating macroglia cells were observed a lowered oxygen consumption, an increased aerobic glycolysis and alanine formation and a higher alanine aminotransferase and glutamate dehydrogenase activity than in the control tissue in the homogenates and in the cell sap fraction. The substrate saturation curves, apparent Km and pH optimum values in the tissue with proliferating macroglia and in the control did not differ from one another. The authors assume that a higher alanine amino-transferase activity in the tissue with macroglia proliferation can reflect either a higher synthesis of the enzyme in the altered tissue, or a predominance of glial elements in the altered tissue possessing a higher alanine aminotransferase activity than the nerve cells.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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