Cold acclimation or grapeseed oil feeding affects phospholipid composition and mitochondrial function in duckling skeletal muscle
作者:François Chaînier、Damien Roussel、Bruno Georges、Roger Meister、Jean-Louis Rouanet、Claude Duchamp、Hervé Barre
DOI:10.1007/s11745-000-0625-8
日期:2000.10
much less affected by cold acclimation. The cold-induced changes in phospholipid FA profile and functional properties of muscle mitochondria were reproduced by giving TN ducklings a diet enriched in grapeseed oil (GO, rich in n-6 FA), suggesting a causal relationship between the membrane structure and mitochondrial functional parameters. However, hepatic mitochondria from ducklings fed the GO diet also
在冷驯化(4℃)雏鸭中检查了磷脂脂肪酸(FA)的组成以及骨骼肌和肝线粒体的功能特性。与来自热中性(TN,25摄氏度)雏鸭的CA相比,来自CA禽类的分离的肌肉线粒体的磷脂FA更长且更不饱和。长链多不饱和脂肪酸(PUFA,主要为20:4n-6)的增加与4型呼吸速率增加和呼吸控制率(RCR)降低有关。相比之下,肝线粒体受冷适应的影响要小得多。通过给TN小鸭吃富含葡萄籽油(GO,富含n-6 FA)的饮食,可以再现冷诱导的磷脂FA分布和肌肉线粒体功能特性的变化。提示膜结构与线粒体功能参数之间存在因果关系。然而,喂食GO饲料的小鸭肝脏线粒体也显示出长链PUFA的富集,但其生化特性却发生了相反的变化(状态4较低,RCR较高)。提示骨骼肌和肝脏之间膜脂质成分对线粒体功能特性的差异调节可能取决于可能与长链PUFA相互作用并影响线粒体膜质子泄漏的肌肉特异性因素。