Yogurt Benefits Bone Mineralization in Ovariectomized Rats with Concomitant Modulation of the Gut Microbiome

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Scope: Evidence supports that gut-modulating foods potentially can suppress bone loss in postmenopausal women. This study aims to investigate the effect of milk calcium-enriched milk, yogurt, and yogurt-inulin combination on the gut–bone association. Methods and results: A 6-week intervention study is conducted in ovariectomized rats. Four pastes containing milk calcium-fortified milk (M-Ca), milk calcium-fortified yogurt (Y-Ca), inulin-fortified Y-Ca (Y-I-Ca), or an isoconcentration of calcium carbonate (Ca-N), and a calcium-deficient paste are provided. M-Ca does not influence bone mineral density and content (BMD and BMC), femur mechanical strength, or femoral microstructure compared to Ca-N, but Y-Ca increases spine BMD. The serum metabolome reveals that Y-Ca modulated glycine-related pathways with reduced glycine, serine, and threonine. No additive effects of yogurt and inulin are found on bone parameters. Correlation analysis shows that increased lactobacilli and reduced Clostridiaceae members in Y-Ca is associated with an increased spine BMD. Increases in Bifidobacterium pseudolongum, Turicibacter, Blautia, and Allobaculum and gut short-chain fatty acids in Y-I-Ca are not reflected in bone parameters. Conclusion: Yogurt as calcium vehicle contributes to increased spine BMD concomitant with changes in the gut microbiome and glycine-related pathways, while adding inulin to yogurt does not affect bone mineralization in ovariectomized rats.

OriginalsprogEngelsk
Artikelnummer2200174
TidsskriftMolecular Nutrition and Food Research
Vol/bind66
Udgave nummer20
Antal sider10
ISSN1613-4125
DOI
StatusUdgivet - 2022

Bibliografisk note

Funding Information:
This study was part of the MÆSTRA project supported by the Danish Dairy Research Foundation. W.H. and Z.X. thank China Scholarship Council for funding. Data were generated though accessing research infrastructure at Aarhus University, including FOODHAY (Food and Health Open Innovation Laboratory, Danish Roadmap for Research Infrastructure) and AXIA (Aarhus X‐ray Imaging Alliance) funded by the Novo Nordisk Foundation (NNF19OC0055801). They thank Helene Farlov and Mette Nelander for taking care of the rats and Rebekka Thøgersen for assistance during sample collection.

Publisher Copyright:
© 2022 The Authors. Molecular Nutrition & Food Research published by Wiley-VCH GmbH.

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