Tissue variation of mitochondrial oxidative phosphorylation efficiency in cold-acclimated ducklings

• Authors: Karine Salin , Loïc Teulier , Benjamin Rey , Jean-Louis Rouanet , Yann Voituron , Claude Duchamp , Damien Roussel
• Languages of publication: EN

Abstracts

EN

We investigated the oxidative phosphorylation efficiency of liver and gastrocnemius muscle mitochondria in thermoneutral and cold-acclimated ducklings. The yield of oxidative phosphorylation was lower in muscle than in liver mitochondria, a difference that was associated with a higher proton conductance in muscle mitochondria. Cold exposure did not affect oxidative phosphorylation efficiency or basal proton leak in mitochondria. We conclude that the basal proton conductance of mitochondria may regulate mitochondrial oxidative phosphorylation efficiency, but is not an important contributor to thermogenic processes in cold-acclimated ducklings.

Keywords

EN

liver; skeletal muscle; thermogenesis; mitochondrial oxidative phosphorylation; proton conductance

• Publisher: Polish Biochemical Society
• Journal: Acta Biochimica Polonica
• Year: 2010
• Volume: 57
• Issue: 4
• Pages: 409-412

Dates

published

2010

received

2010-08-28

revised

2010-11-04

accepted

2010-11-27

(unknown)

2010-11-29

Contributors

author

Karine Salin

• Ecologie des Hydrosystèmes fluviaux, UMR 5023 CNRS, Université de Lyon, Villeurbanne, France

author

Loïc Teulier

• Physiologie Intégrative, Cellulaire et Moléculaire, UMR 5123 CNRS, Université de Lyon, Villeurbanne, France

author

Benjamin Rey

• Biométrie et Biologie Evolutive, UMR 5558 CNRS, Université de Lyon, Villeurbanne, France

author

Jean-Louis Rouanet

• Physiologie Intégrative, Cellulaire et Moléculaire, UMR 5123 CNRS, Université de Lyon, Villeurbanne, France

author

Yann Voituron

• Ecologie des Hydrosystèmes fluviaux, UMR 5023 CNRS, Université de Lyon, Villeurbanne, France

author

Claude Duchamp

• Physiologie Intégrative, Cellulaire et Moléculaire, UMR 5123 CNRS, Université de Lyon, Villeurbanne, France

author

Damien Roussel

• Physiologie Intégrative, Cellulaire et Moléculaire, UMR 5123 CNRS, Université de Lyon, Villeurbanne, France

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