Metabolic Alterations in Older Women With Low Bone Mineral Density Supplemented With Lactobacillus reuteri
Journal article, 2021

JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research. Osteoporosis and its associated fractures are highly prevalent in older women. Recent studies have shown that gut microbiota play important roles in regulating bone metabolism. A previous randomized controlled trial (RCT) found that supplementation with Lactobacillus reuteri ATCC PTA 6475 (L.reuteri) led to substantially reduced bone loss in older women with low BMD. However, the total metabolic effects of L. reuteri supplementation on older women are still not clear. In this study, a post hoc analysis (not predefined) of serum metabolomic profiles of older women from the previous RCT was performed to investigate the metabolic dynamics over 1 year and to evaluate the effects of L. reuteri supplementation on human metabolism. Distinct segregation of the L. reuteri and placebo groups in response to the treatment was revealed by partial least squares-discriminant analysis. Although no individual metabolite was differentially and significantly associated with treatment after correction for multiple testing, 97 metabolites responded differentially at any one time point between L. reuteri and placebo groups (variable importance in projection score >1 and p value <0.05). These metabolites were involved in multiple processes, including amino acid, peptide, and lipid metabolism. Butyrylcarnitine was particularly increased at all investigated time points in the L. reuteri group compared with placebo, indicating that the effects of L. reuteri on bone loss are mediated through butyrate signaling. Furthermore, the metabolomic profiles in a case (low BMD) and control population (high BMD) of elderly women were analyzed to confirm the associations between BMD and the identified metabolites regulated by L. reuteri supplementation. The amino acids, especially branched-chain amino acids, showed association with L. reuteri treatment and with low BMD in older women, and may serve as potential therapeutic targets. © 2021 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.

PROBIOTICS

METABOLOMICS

LACTOBACILLUS REUTERI

OSTEOPOROSIS

BONE LOSS

Author

Peishun Li

Chalmers, Biology and Biological Engineering, Systems and Synthetic Biology

Daniel Sundh

University of Gothenburg

Boyang Ji

Chalmers, Biology and Biological Engineering, Systems and Synthetic Biology

Dimitra Lappa

Chalmers, Biology and Biological Engineering, Systems and Synthetic Biology

Ling Qun Ye

Chalmers, Biology and Biological Engineering, Systems and Synthetic Biology

Jens B Nielsen

BioInnovation Institute

Chalmers, Biology and Biological Engineering, Systems and Synthetic Biology

Technical University of Denmark (DTU)

Mattias Lorentzon

Sahlgrenska University Hospital

Australian Catholic University

University of Gothenburg

JBMR Plus

24734039 (eISSN)

Vol. 5 4 e10478

Subject Categories

Dentistry

Orthopedics

Obstetrics, Gynecology and Reproductive Medicine

DOI

10.1002/jbm4.10478

More information

Latest update

4/28/2021