首页|生命早期摄入小米对小鼠代谢的影响

生命早期摄入小米对小鼠代谢的影响

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目的:前期研究发现20%小米摄入量能有效调节生命早期小鼠的肠道菌群组成,增加有益菌的定殖,而过高的小米摄入量(80%)会使肠道菌群多样性和均匀度降低,有益菌丰度下降.本研究基于非靶向代谢组学分析小鼠生命早期摄入20%和80%小米对其粪便代谢谱的影响.方法:采用非靶向代谢组学技术,检测小鼠从生命早期摄入小米后,其粪便代谢物及关键代谢途径的变化.结果:当小米摄入量为20%时,与正常对照组相比,小鼠粪便代谢物中有165个上调、11个下调、467个无显著变化,差异代谢物显著富集的代谢途径主要为牛磺酸和低牛磺酸代谢、维生素B6代谢和新生霉素生物合成.当小米摄入量为80%时,与正常对照组相比,代谢物中有178个上调、24个下调、441个无显著变化,差异代谢物显著富集的代谢途径主要包括色氨酸代谢、维生素B6代谢和新生霉素生物合成.其中,小米摄入量从20%增至80%,均显著影响色氨酸代谢,且色氨酸代谢途径对应的影响值显著升高.结论:生命早期摄入小米会显著影响小鼠的粪便代谢物水平及相关代谢通路,尤其是色氨酸代谢途径,此途径与机体的认知能力和大脑发育关系密切.小米摄入量过高可能会影响机体的健康发育.本研究为明确小米的营养功能及其功能食品开发提供数据支持.
The Effects of Early Life Intake of Foxtail Millet on Metabolism in Mice
Previous study found that 20%foxtail millet intake could effectively regulate the gut microbiota composition and increase the colonization of beneficial bacteria in mice in early life.However,excessive foxtail millet feeding(80%)reduced the diversity and homogeneity of intestinal flora and caused a decrease in the abundance of beneficial bacteria.The present study was based on non-targeted metabolomics to analyze the effects of intaking foxtail millet from the early life stage in mice on their fecal metabolic profile.Methods:Non-targeted metabolomics technique was used to detect changes in the fecal metabolic profile of mice after the intake of foxtail millet from the early life stage.Results:When the foxtail millet intake was 20%,compared to the normal group,there were 165 up-regulated,11 down-regulated,and 467 non-significant changes in fecal metabolites,and these different express metabolites mainly enriched in taurine and hypotaurine metabolism,vitamin B6 metabolism,and neobiotics biosynthesis.When the foxtail millet intake increased to 80%,there were 178 up-regulated,24 down-regulated,and 441 non-significant alternations in fecal metabolites,and the notably changed metabolism pathway mainly including tryptophan metabolism,vitamin B6 metabolism,and neo-biomycin biosynthesis.In addition,both two foxtail millet intake dosages significantly influenced tryptophan metabolism,and the impact value of the tryptophan metabolism pathway greatly increased when the foxtail millet intake changed from 20%to 80%.Conclusion:Consumption of foxtail millet from the early life stage significantly affected fecal metabolite levels and related metabolism pathways in mice,especially the tryptophan metabolism pathway,which played a vital role in the cognitive ability and brain development of body.Thus,excessive foxtail millet supplementation might be detrimen-tal to the organism's healthy development.The study aimed to provide a theoretical basis for improving the mechanism of millet's action in the daily diet,thus supporting data for the development and application of functional foods based on millet.

foxtail milletearly life stagefecalmetabolomictryptophan metabolism

王晗、付永霞、陈博睿、赵卿宇、王超、沈群

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中国农业大学食品科学与营养工程学院 国家粮食产业(青稞深加工)技术创新中心 北京 100083

山西农业大学 山西功能食品研究院 太原 030031

小米 生命早期 粪便 代谢组学 色氨酸代谢

2024

中国食品学报
中国食品科学技术学会

中国食品学报

CSTPCD北大核心EI
影响因子:1.079
ISSN:1009-7848
年,卷(期):2024.24(11)