骨吸收
微生物群
骨质疏松症
骨重建
肠道菌群
健骨
生长因子
生物
内分泌学
细胞生物学
失调
免疫系统
细菌
骨矿物
免疫学
生物信息学
生物化学
受体
作者
Jing Yan,Jeremy Herzog,Kelly Tsang,Caitlin A. Brennan,Maureen A. Bower,Wendy S. Garrett,Balfour R. Sartor,Antonios O. Aliprantis,Julia F. Charles
标识
DOI:10.1073/pnas.1607235113
摘要
Significance New interventions are needed to improve bone health and reduce the risk for osteoporosis and fracture. Dysbiosis is increasingly linked to metabolic abnormalities, although the effect of the microbiota on skeletal health is poorly understood. Previous studies suggest microbiota are detrimental to bone by increasing resorption. In this report, we show that the gut resident microbiota promote bone formation, as well as resorption, with long-term exposure to microbiota resulting in net skeletal growth. Microbiota induce the hormone insulin-like growth factor 1 (IGF-1), which promotes bone growth and remodeling. Short-chain fatty acids (SCFAs), produced when microbiota ferment fiber, also induce IGF-1, suggesting a mechanism by which microbiota affect bone health. Manipulating the microbiome or its metabolites may afford opportunities to optimize bone health and growth.
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