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Gegenbaurs Morphol Jahrb. 1989;135(1):207-9.

[Morphometric studies of peripheral nerves and spinal ganglion cells in streptozotocin diabetic rats].

[Article in German]

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  • 1Institut für Pathologische Anatomie des Bereichs Medizin der Ernst-Moritz-Arndt-Universität Greifs-wald.


Morphometric studies of sural nerves and dorsal root ganglia cells L5 were performed in 8 diabetic rats 35 or 44d after the administration of streptozotocin and in 8 controls. Morphometry of photographed semithin sections was realized after whole body glutaraldehyde perfusion with semiautomatic MOP AM 02 and MOP Videoplan. The peripheral nerve showed no decrease of the total nerve area, number of nerve fibres or of myelinated area. Parameters area of fibres decreased in diabetic animals caused by reduction of myelin sheath thickness. There were no changes of mean neuron volume and maximal cell diameter in the dorsal root ganglia. Whereas in experimental short-term diabetes the peripheral nerves demonstrate morphologic changes correlating to biochemical abnormalities, no such correlations can be observed in the perikarya. It is suggested, that primary SCHWANN cell lesion is responsible for the observed myelin thickness reduction.

[PubMed - indexed for MEDLINE]
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