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The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
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Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in...
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Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
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Lactopontin in a Simulated Infant Formula Protein Matrix Promotes Bone Development via the Gut-Bone Axis in Growing

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Lactopontin (L-OPN) in infant formula significantly enhanced bone growth and gut bacteria in rats. This bioactive protein shows promise for improving bone development in formula-fed infants.

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Area of Science:

  • Nutritional Science
  • Developmental Biology
  • Microbiome Research

Background:

  • Lactopontin (L-OPN) is a key breast milk protein promoting bone development.
  • Its role in infant formula requires investigation for bone health benefits.

Purpose of the Study:

  • To assess L-OPN-fortified formula's impact on bone growth in rats.
  • To elucidate the mechanisms behind L-OPN's effects on bone development.

Main Methods:

  • Weanling rats were gavaged daily for four weeks with either control, protein-only, or L-OPN-fortified formula.
  • Bone metrics, body length, fecal microbiota, and serum metabolomics were analyzed.

Main Results:

  • L-OPN formula significantly increased bone volume, trabecular bone number, femur length/thickness, and body length.
  • L-OPN altered gut microbiota, increasing Bacteroides and Parabacteroides.
  • Supplementation modulated bile acid metabolism, elevating 12-ketolithocholic acid (12-KLCA), which correlated with bone metrics.

Conclusions:

  • Preclinical data suggest L-OPN fortification positively influences bone growth and gut microbiome.
  • Findings support further research into L-OPN for infant formula applications.