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酸的年龄相关的骨质保护作用:通过肠骨轴激活增强骨完整性
Fan Zhao1,2, Jianhua Ma1,3, Zhihao Chen1
1Lab for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Lab for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China. qianair@nwpu.edu.cn.
Food & function
|December 23, 2025
概括
酸酸 (HT-ac) 显示出对骨质疏松症治疗的希望,改善老年小鼠的骨密度. 然而,年轻小鼠经历了不良影响,表明需要针对年龄特定的干预措施.
科学领域:
- 老年学是一门学科.
- 骨生物学 骨生物学 骨生物学
- 营养保健品 营养保健品
背景情况:
- 骨质疏松症是一个显著的老年健康问题,其特点是骨质减少.
- 天然抗氧化剂,如酸酸 (HT-ac),具有潜在的治疗益处,但它们对骨健康的影响需要进一步研究.
- 对于HT-ac对骨健康的年龄特异性影响仍未得到充分研究.
研究的目的:
- 在小鼠模型中研究酸 (HT-ac) 对骨健康的年龄特异性影响.
- 评估HT-ac对骨密度,微型架构和生物力学特性的影响.
- 探索HT-ac,肠道微生物群和不同年龄段的活性氧物种 (ROS) 之间的关系.
主要方法:
- 鼠模型被分为对照组和HT-ac治疗组,服用20周.
- 通过骨矿物质含量,微架构分析和生物力学测试来评估骨健康.
- 分析了肠道微生物群组成,代谢学和ROS水平,以了解潜在的机制.
主要成果:
- 在年轻和老老的小鼠中,HT-ac治疗导致骨矿物质含量增加,并改善了脊椎骨的特性.
- 年轻小鼠表现出不良影响,包括脂肪积累增加,炎症和ROS水平升高,这些不被观察到老年小鼠.
- HT-ac的骨质保护作用与肠道微生物群的变化和L-carnitine生物合成的上调有关.
结论:
- 长期使用酸酸 (HT-ac) 提供了不依赖年龄的骨质保护,通过一种依赖肠道微生物群的机制,涉及L-卡尼丁.
- 该研究强调了基于年龄对HT-ac的不同反应,强调了针对年龄的骨质疏松症干预措施的必要性.
- 肠道微生物群调节和L-卡尼丁生物合成是介导HT-ac骨保护作用的关键途径.
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