新神經迴路能夠在齧齒動物中誘導冬眠類似狀態
作者:
小柯機器人發布時間:2020/6/12 23:24:53
近日,日本筑波大學Takeshi Sakurai、理化學研究所Genshiro A. Sunagawa等研究人員合作,發現一個能夠在齧齒動物中誘導類似冬眠狀態的神經迴路。2020年6月11日,國際知名學術期刊《自然》在線發表了這一成果。
研究人員發現,齧齒動物中的下丘腦神經元迴路誘導了類似於冬眠的長期低溫和低代謝狀態。在這種狀態下,儘管身體溫度和耗氧量保持在非常低的水平,但是與冬眠一樣,調節新陳代謝的能力仍然保持功能。從這種狀態恢復後,沒有明顯的組織器官損傷或行為異常被觀察到。
這些發現使開發誘導類似冬眠狀態的方法成為可能,這在包括人類在內的非冬眠哺乳動物中具有潛在的應用前景。
據了解,當面臨食物短缺時,冬眠的哺乳動物會主動降低體溫以減少能量消耗。由於其潛在的醫學益處,它引起代謝不足狀態的能力引起了人們極大的興趣。
附:英文原文
Title: A discrete neuronal circuit induces a hibernation-like state in rodents
Author: Tohru M. Takahashi, Genshiro A. Sunagawa, Shingo Soya, Manabu Abe, Katsuyasu Sakurai, Kiyomi Ishikawa, Masashi Yanagisawa, Hiroshi Hama, Emi Hasegawa, Atsushi Miyawaki, Kenji Sakimura, Masayo Takahashi, Takeshi Sakurai
Issue&Volume: 2020-06-11
Abstract: Hibernating mammals actively lower their body temperature to reduce energy expenditure when facing food scarcity1. This ability to induce a hypometabolic state has evoked great interest owing to its potential medical benefits2,3. Here we show that a hypothalamic neuronal circuit in rodents induces a long-lasting hypothermic and hypometabolic state similar to hibernation. In this state, although body temperature and levels of oxygen consumption are kept very low, the ability to regulate metabolism still remains functional, as in hibernation4. There was no obvious damage to tissues and organs or abnormalities in behaviour after recovery from this state. Our findings could enable the development of a method to induce a hibernation-like state, which would have potential applications in non-hibernating mammalian species including humans.
DOI: 10.1038/s41586-020-2163-6
Source: https://www.nature.com/articles/s41586-020-2163-6