Anatomy and Embryology

, Volume 153, Issue 1, pp 85–93 | Cite as

Rasterelektronenmikroskopische Untersuchung der Oberflächenveränderungen von Schilddrüsenepithelzellen der Ratte nach 6- bis 48-stündiger Kälteeinwirkung

  • Otto Bucher
  • Radivoj Krstić
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Zusammenfassung

Rasterelektronenmikroskopische Untersuchungen von Schilddrüsenfollikelzellen von Ratten, die 6 bis 48 Stunden einer Temperatur von +4° ausgesetzt gewesen waren, haben gezeigt, dass, im Vergleich mit denen von bei 22° gehaltenen Kontrolltieren, die Zahl der apikalen Mikrovilli zugenommen hat. Diese Ultrastrukturunterschiede — die 48 Studen nach Versuchsbeginn statistisch signifikant sind — stehen in Beziehung mit der durch die Kälteeinwirkung bedingten Aktivitätssteigerung der Schilddrüse.

Summary

Scanning electron microscopic observations of thyroid follicle cells of rats exposed to 4° C for 6 to 48 hours were found to show an increased number of apical microvilli in comparison to those of controls kept at 22° C. These ultrastructural differences — which were statistically significant 48 hours after start of the experiments — are related to stimulation of thyroid gland activity by exposure to cold.

Key words

Scanning electron microscopy Thyroid gland (Wistar rat) Exposure to cold Microvilli 
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Copyright information

© Springer-Verlag 1978

Authors and Affiliations

  • Otto Bucher
    • 1
  • Radivoj Krstić
    • 1
  1. 1.Histologisch-Embryologisches Institut der Universität LausanneLausanneSchweiz

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