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  • 1
    Electronic Resource
    Electronic Resource
    Acta neuropathologica 47 (1979), S. 139-143 
    ISSN: 1432-0533
    Keywords: Perineurium ; Permeability ; Peripheral nerve ; Rat ; Ultrastructure ; Autoradiography ; Albumin ; Peroxidase ; Protein deprivation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The permeability properties of the perineurium in sciatic nerves of 12-week-old rats were studied. The penetration of125I-labeled albumin and horseradish peroxidase into the perineurium was investigated electronmicroscopically 10, 30, and 120 min after the local extraneural application of the tracers. The autoradiographic study included age-matched protein-deprived rats. It was concluded that the perineurium acted as a diffusion barrier but also permitted a slow passage of the macromolecules into the endoneurium. The result indicates that this penetration to some extent is due to vesicular transport across the perineurial cells. The significance of these barrier and transport properties of the perineurium is discussed. No obvious differences in perineurial permeability between normal and protein-deprived rats were obtained.
    Type of Medium: Electronic Resource
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