High pressure and glycolytic flux in the freshwater Chinese crab, Eriocheir sinensis.

P. Sébert 1 Y. Choquin A. Péqueux
1 ORPHY (EA 4324) - Optimisation des régulations physiologiques
Abstract : The hexose part of glycolysis has been studied in the freshwater Chinese crab Eriocheir sinensis exposed to high pressure (101 ATA, i.e. 1000 m depth) at 14 degrees C and in normoxic conditions. Glycolytic fluxes (from glucose, JA and from Glucose 6 Phosphate, JB) have been determined using NADH depletion during the conversion of dihydroxy acetone phosphate into alpha-glycerol phosphate. Measurements have been performed at 14 and 19 degrees C. Pressure exposure induces an increase of glycolytic flux and a decrease of the time needed for the transition from aerobic to anaerobic glycolysis. As a consequence pressure-exposed crabs have a higher potential to increase glycolytic flux than control animals at atmospheric pressure. It is concluded that high pressure known to alter numerous enzymes individually, can also modify an overall metabolic pathway.
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Article dans une revue
Comparative Biochemistry and Physiology - Part B: Biochemistry and Molecular Biology, Elsevier, 2000, 126 (4), pp.537-42
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http://hal.univ-brest.fr/hal-00750466
Contributeur : François Guerrero <>
Soumis le : vendredi 9 novembre 2012 - 23:52:03
Dernière modification le : jeudi 13 septembre 2018 - 15:17:13

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P. Sébert, Y. Choquin, A. Péqueux. High pressure and glycolytic flux in the freshwater Chinese crab, Eriocheir sinensis.. Comparative Biochemistry and Physiology - Part B: Biochemistry and Molecular Biology, Elsevier, 2000, 126 (4), pp.537-42. 〈hal-00750466〉

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