The following story tells the details of the ketone body metabolism, focusing on the needs of the brain in prolonged fasting conditions. This literary composition highlights the use of ketone bodies as an important metabolic adaptation that avoids excessive protein degradation and allows for greater survival. The liver produces ketone bodies that are released into the bloodstream and exported to the brain, which then absorbs and transforms them into acetyl‐CoA. These molecules with central role in metabolism generate energy through the Krebs cycle, electron transport chain, and oxidative phosphorylation. This tale is a valuable tool for biochemistry teachers and students because it can help with a deeper understanding of the physiological roles of ketone bodies and their metabolism. © 2019 International Union of Biochemistry and Molecular Biology, 48(1):82–83, 2020.

中文翻译：

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酮体代谢：爱与生存

下面的故事讲述了酮体代谢的细节，重点关注长时间禁食情况下大脑的需求。这篇文学作品强调了使用酮体作为一种重要的代谢适应，避免蛋白质过度降解并允许更大的生存。肝脏产生酮体，释放到血液中并输出到大脑，然后吸收并转化为乙酰辅酶A。这些在代谢中起核心作用的分子通过三羧酸循环、电子传递链和氧化磷酸化产生能量。这个故事对生物化学教师和学生来说是一个宝贵的工具，因为它可以帮助更深入地了解酮体的生理作用及其新陈代谢。© 2019 国际生物化学与分子生物学联盟，