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[The digestive apparatus during hibernation: morphological and functional changes].

M Angriman1, R Franceschi, C Zancanaro

  • 1Università degli Studi--Verona, Dipartimento di Scienze Morfologico-Biomediche, Sezione di Anatomia ed Istologia.

Minerva Gastroenterologica E Dietologica
|February 28, 2006
PubMed
Summary

Hibernating animals undergo significant, reversible changes in their digestive systems, including mass loss and altered cell activity. This finely regulated process offers insights into organ preservation techniques.

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Area of Science:

  • Comparative physiology
  • Gastroenterology
  • Hibernation biology

Context:

  • Hibernation involves a state of suspended feeding and functional rest of the digestive apparatus.
  • Existing research (1966-1999) on digestive system structure-function in hibernators is fragmented due to varied methodologies and species.
  • Despite functional changes, the overall morphology of digestive organs is generally maintained.

Purpose:

  • To review and synthesize published data on the structure-function relationship within the digestive apparatus of hibernating animals.
  • To highlight the dynamic and reversible adaptations of the digestive system during hibernation.

Summary:

  • The digestive apparatus undergoes substantial rearrangement during hibernation, characterized by mass reduction and decreased/arrested mitotic activity.

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  • Recent findings indicate enhanced protein expression and mucosal transport activities in the intestine during hibernation.
  • All observed changes are fully reversible upon arousal from hibernation.

    • Impact:

    • Hibernation represents a finely regulated physiological state with potential applications in improving organ preservation for transplantation.
    • Understanding these adaptations can inform strategies for extending organ viability outside the body.