Original title: Gut microbiota disturbance disrupts osteonal organization and mechanical competence during postnatal cortical bone maturation in rabbits with local metabolic and transcriptional remodeling
Cortical bone is the hard outer layer of a bone, built from tiny units called osteons. Researchers disturbed the gut microbes of young rabbits with antibiotics while their osteons were forming. The treated rabbits developed fewer secondary osteons and changed osteonA small structural unit that makes up much of the hard outer layer of bone. shapes, and their bones carried less force and were less stiff. Standard scans still showed no change in bone geometry or mineral density.
Imagine building a stone wall from small, carefully arranged blocks. The wall can keep the same size and look just as dense, yet lose strength if the blocks are arranged poorly. In this paper, the wall is the hard outer bone, the blocks are its tiny structural units, and the disturbed gut microbes are linked to a weaker arrangement even when standard scans show no change in size or density.
Bone health is not only about how much bone there is or how dense it looks. In these rabbits, gut microbiota disturbance was linked to weaker bones and disrupted internal structure, despite unchanged standard measures. That suggests those measures can miss changes in bone strength during development.
The abstract reports findings in rabbits during early postnatal bone development. It does not establish whether the same effects occur in people, how long the effects last, or whether the gut microbiota changes directly cause the local metabolic and transcriptional remodeling.
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Gut microbiota disturbance disrupts osteonal organization and mechanical competence during postnatal cortical bone maturation in rabbits with local metabolic and transcriptional remodeling — Xiaopei Yang, Ziming Geng, Hongji Wang et al. — Frontiers in Cell and Developmental Biology — doi:10.3389/fcell.2026.1937899
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.