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Intranukleäre Einschlüsse in endokrinen Zellen des Kaninchenmagens

Intranuclear inclusions in endocrine cells of the rabbit stomach

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Summary

The occurrence of intranuclear inclusion bodies in the endocrine (enterochromaffin and only argyrophil) cells of the mucosa of the rabbit stomach is described. These bodies are composed of filaments of 80±20 Å thickness or of microtubuli with an irregular periodicity of 120–180 Å and they correspond largely to the filamentary or tubular nuclear inclusions, which were described several times in nerve cells, epithelial or gland cells. The inclusion bodies have no contact with the nucleolus or the nuclear membrane. In the same cells additionally extensions of the perinuclear cisterna containing vacuoles are reported. Both findings are compared with similar observations in the literature and are discussed in respect of nuclear secretion.

Zusammenfassung

  1. 1.

    Das Vorkommen von intranukleären Einschlußkörpern in den endokrinen Zellen der Schleimhaut des Kaninchenmagens wird beschrieben.

  2. 2.

    Die Körper finden sich sowohl in den 5 HT-bildenden enterochromaffinen und argentaffinen als auch in den argyrophilen Polypeptid-bildenden (Pearse) endokrinen Zellen des Magenfundus.

  3. 3.

    Die Einschlußkörper bestehen aus 80±20 Å dicken Filamenten mit ungleichmäßiger Periodik von 120–180 Å. Es ist möglich, daß die Filamentprofile z.T. den Wandungen von Mikrotubuli entsprechen (Durchmesser: ca. 220±40 Å).

  4. 4.

    Die Einschlußkörper gleichen weitgehend den in Nerven-, Epithel- und Drüsenzellen mehrfach beschriebenen, fädigen oder röhrchenförmigen Proteineinschlüssen. Sie haben keinen Zusammenhang mit dem Kernkörperchen oder mit der Kernmembran.

  5. 5.

    In den gleichen Zellen werden neben den Filament-(Röhrchen-)Körpern Erweiterungen des Kern-Plasma-Spaltes beobachtet, welche Bläschen enthalten, die vermutlich aus dem Kern stammen.

  6. 6.

    Beide Befunde werden mit ähnlichen, in der Literatur beschriebenen Beobachtungen verglichen und im Zusammenhang mit der Frage der Kernsekretion diskutiert.

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Derzeit Institut für Anatomie der Medizinischen Hochschule, D-3000 Hannover, Roderbruchstr. 101.

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Müller, O., Ratzenhofer, M. Intranukleäre Einschlüsse in endokrinen Zellen des Kaninchenmagens. Z. Zellforsch. 117, 526–536 (1971). https://doi.org/10.1007/BF00330713

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  • DOI: https://doi.org/10.1007/BF00330713

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