Gut Microbiome and Bone: to Build, Destroy, or Both?
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Purpose of Review
The gut microbiota can be considered a hidden organ that plays essential roles in host homeostasis. Exploration of the effects of microbiota on bone has just begun. Complimentary studies using germ-free mice, antibiotic, and probiotic treatments reveal a complicated relationship between microbiota and bone. Here, we review recent reports addressing the effect of gut microbiota on bone health, discuss potential reasons for discrepant findings, and explore potential mechanisms for these effects.
Manipulation of microbiota by colonization of germ-free mice, antibiotics, or probiotic supplementation significantly alters bone remodeling, bone development and growth, as well as bone mechanical strength. Different experimental models reveal context-dependent effects of gut microbiota on bone.
By examining phenotypic effects, experimental context, and proposed mechanisms, revealed by recent reports, we hope to provide comprehensive and fresh insights into the many facets of microbiota and bone interactions.
KeywordsMicrobiome Bone Germ-free Antibiotics Probiotics IGF-1 SCFA
This work was supported by NIH grants AG046257 from the NIA, AR062590 from the NIAMS, a Faculty Career Development Award from the Brigham and Women’s Hospital, and the Bettina Looram Fund.
Compliance with Ethical Standards
Conflict of Interest
Julia Charles and Jing Yan declare no conflict of interest.
Human and Animal Rights and Informed Consent
This article does not contain any studies with human or animal subjects performed by any of the authors.
Papers of particular interest, published recently, have been highlighted as: •• Of major importance
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