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Insulin modulates the decrease of oxidative phospfaorylation induced by ingested butyrate. NMR study on the isolated and perfused rat liver

机译:胰岛素调节通过摄取丁酸丁酸诱导的氧化植物化的降低。 NMR研究分离和灌注的大鼠肝脏

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We have demonstrated in the isolated and perfused liver of rat a positive and linear correlation, only in the presence of insulin, between the net glucose-dependent fluxes of ATP and glycogen (Gig) (Baillet-Blanco et al., 2005). On the contrary, the perfusion of fatty acids (FA) (butyrate, octanoate) decreases the ATP content in this model (Beauvieux et al., 2001). This effect of FA could be partly explained by the supply of FADH_2 due to the beta-oxidation and the subsequent decrease in the stoechiometric ratio of NADH+H~+ and FADH_2, entering in the respiratory chain to be reoxidised. That could lead to a decrease of the synthesis flux of mitochondrial ATP, disturbing thus the energy supply necessary to glycogenosynthesis.
机译:我们已经在大鼠的分离和灌注的肝脏中证明了阳性和线性相关性,仅在胰岛素的存在下,在ATP和糖原(Gig)的净血糖依赖性助熔剂之间(Baillet-Blanco等,2005)之间。相反,脂肪酸(FA)(丁酸盐,辛酸)的灌注降低了该模型中的ATP含量(Beauvieux等,2001)。由于β-氧化,通过β-氧化和纳米+ H〜+和Fadh_2的化学计量比的随后降低,进入呼吸链中的呼吸链,可以部分地解释FACH_2的这种FA的效果。这可能导致线粒体ATP的合成通量减少,因此扰乱糖合成所需的能量供应。

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