Diminished AMPK signaling response to fasting in thioredoxin-interacting protein knockout mice.

Diminished AMPK signaling response to fasting in thioredoxin-interacting protein knockout mice.
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AMPK信号传导对硫氧还蛋白相互作用的蛋白质基因敲除小鼠中禁食的信号传导响应减少。

DOI:
10.1016/j.febslet.2011.03.042
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发表时间:
2011-04-20
期刊:
影响因子:
3.5
通讯作者:
Hui ST
Hui ST
中科院分区:
生物学3区
文献类型:
--
作者:
Andres AM;Ratliff EP;Sachithanantham S;Hui ST

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硫氧还蛋白相互作用蛋白(Txnip)敲除(TKO)小鼠表现出对禁食的反应受损。在此,我们发现AMPK的激活和细胞AMP水平在禁食TKO小鼠的心脏和比目鱼肌中减少,但在腓肠肌中没有减少。同样,禁食TKO小鼠的糖原含量在氧化肌肉中增加,但在糖酵解肌肉中没有差异。这些数据表明Txnip缺乏对氧化肌肉的影响高于糖酵解肌肉,并为Txnip的代谢作用提供了新的见解。
Thioredoxin-interacting protein (Txnip) knockout (TKO) mice exhibit impaired response to fasting. Herein, we showed that activation of AMPK and cellular AMP levels were diminished in the heart and soleus muscle but not in gastrocnemius muscle of fasting TKO mice. Similarly, glycogen content in fasted TKO mice was increased in oxidative muscles but was not different in glycolytic muscles. These data suggest Txnip deficiency has a higher impact on oxidative muscle than glycolytic muscles and provide new insights into the metabolic role of Txnip.
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