Share

HOW DO ANIMALS SURVIVE FROST.

COMMENT LES ANIMAUX SURVIVENT AU GEL.

Author(s) : STOREY K. B., STOREY J. M.

Type of article: Article

Summary

RESEARCH CARRIED OUT AT THE CARLETON UNIVERSITY (OTTAWA, CANADA) ON THE ADAPTATION PROCESSES OF CERTAIN ANIMAL SPECIES WITH COLD BLOOD WHICH ARE CAPABLE OF SPENDING THE WINTER IN A FROZEN STATE AND THEN < DEFROST > SAFELY AS SPRING ARRIVES. SOME OF THESE ANIMALS CAN SURVIVE WINTER BY MAINTAINING THEIR BIOLOGICAL LIQUIDS IN A LIQUID STATE ; HOWEVER THE STUDY CONCERNS THOSE WHO KNOW HOW TO LIVE WITH FROST. THE AUTHORS DESCRIBE THE LETHAL DAMAGE CAUSED BY SOLIDIFICATION OF THE INTRACELLULAR SOLUTIONS, AND SHOW HOW THE FORMATION OF EXTRACELLULAR ICE DOES NOT CAUSE ANY IRREVERSIBLE EFFECT. THEY EXPLAIN THE MECHANISMS WHICH CONDITION THE FROST TOLERANCE (NOTABLY: THE PRESENCE OF < NUCLEATION PROTEINS >, OF < ANTIFROST PROTEINS >, OF SUBSTANCES WHICH PROTECT THE STRUCTURE OF THE CELLULAR AND MACROMOLECULE MEMBRANES WHOSE ACTION IS DETAILED). FINALLY, THEYEXPLAIN HOW THE ANIMALS UNDER STUDY ADAPT THEMSELVES TO THE LACK OF OXYGEN AND OF ENT LIMITS OF THE APPLICATION OF CRYOPRESERVATION TO HUMAN TISSUES AND ORGANS ARE EXAMINED. J.R.

Details

  • Original title: COMMENT LES ANIMAUX SURVIVENT AU GEL.
  • Record ID : 1989-2516
  • Languages: French
  • Source: Recherche - n. 208
  • Publication date: 1989/03
  • Document available for consultation in the library of the IIR headquarters only.

Links


See the source

Indexing