Improvement in the efficiency of oxidative phosphorylation in the freshwater eel acclimated to 10.1 MPa hydrostatic pressure.

Abstract : Previous studies have suggested that the efficiency of oxidative phosphorylation in the freshwater eel (Anguilla anguilla) is increased after acclimation to high hydrostatic pressure. Analysis at atmospheric pressure of the respiratory chain complexes showed that, after 21 days at 10.1 MPa, the activity of complex II was decreased to approximately 50 % (P<0.01) of the control value and that cytochrome c oxidase (complex IV) activity was significantly increased to 149 % of the control value (P<0.05). ADP/O ratios calculated from mitochondrial respiration measurements were significantly increased after acclimation to high hydrostatic pressure (2.87 versus 2.52, P<0.001) when measured in the presence of pyruvate plus malate at atmospheric pressure. These results clearly show an increased oxidative phosphorylation efficiency in response to high-pressure acclimation.
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Article dans une revue
J Exp Biol, 2000, 203 (Pt 19), pp.3019-23
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http://hal.univ-brest.fr/hal-00743428
Contributeur : François Guerrero <>
Soumis le : jeudi 18 octobre 2012 - 23:04:55
Dernière modification le : mardi 6 mars 2018 - 02:11:17

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  • HAL Id : hal-00743428, version 1
  • PUBMED : 10976038

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Michael Theron, François Guerrero, Philippe Sébert. Improvement in the efficiency of oxidative phosphorylation in the freshwater eel acclimated to 10.1 MPa hydrostatic pressure.. J Exp Biol, 2000, 203 (Pt 19), pp.3019-23. 〈hal-00743428〉

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