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Fasting levels of hepatic p-S6 are increased in old mice

机译:老年小鼠的肝p-S6的空腹水平增加

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摘要

TOR is involved in aging in a wide range of species from yeast to mammals. Here we show that, after overnight fasting, mTOR activity is higher in the livers of 28 months old female mice compared with middle-aged mice. Taken together with previous reports, our data predict that the life-extending effect of calorie restriction (CR) may be diminished,if CR is started in very old age. In contrast, rapamycin is known to be effective, even when started late in life.
机译:TOR参与了从酵母到哺乳动物的多种物种的衰老。在这里,我们显示,禁食过夜后,与中年小鼠相比,在28个月大的雌性小鼠的肝脏中mTOR活性更高。结合以前的报告,我们的数据预测,如果CR在很老的年龄开始,那么卡路里限制(CR)的延寿作用可能会减弱。相反,已知雷帕霉素即使在生命后期开始也有效。

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