Mineralization in strontium-treated rat calvarial osteoblast cultures: molecular mechanisms & dependencies

How nutrients influence it

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What it does

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Recorded relationships

What acts on it

Strontium strongly inhibited mineral deposition while collagenous matrix structures remained apparent and osteoblast numbers were unchanged; ionized calcium remained in the medium.
Strontium ion / Sr2+ → Mineralization in strontium-treated rat calvarial osteoblast cultures source_derived_draftungraded
Experimental context and source evidence
evidence_access
Primary full text
experimental_model
Same rat primary osteoblast cultures.
limitations
Does not establish that all bone effects are physicochemical, nor deny fracture outcomes in a clinical trial.
nutrient_topic
Strontium collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Strontium
plain_language
Making a scaffold and depositing calcium mineral are different steps.
primary_references
Strontium potently inhibits mineralisation in bone-forming primary rat osteoblast cultures and reduces numbers of osteoclasts in mouse marrow cultures. · 2014 · https://pubmed.ncbi.nlm.nih.gov/25048011/ · DOI 10.1007/s00198-014-2791-5
Strontium: calcium interactions, cellular mechanisms and mineralization (2026-09-19) · lines 278–284
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Same rat primary osteoblast cultures. · source_derived_draft · unverified_draft
## strontium-matrix-versus-mineral Making a scaffold and depositing calcium mineral are different steps. Strontium strongly inhibited mineral deposition while collagenous matrix structures remained apparent and osteoblast numbers were unchanged; ionized calcium remained in the medium. Model: Same rat primary osteoblast cultures. Limitations: Does not establish that all bone effects are physicochemical, nor deny fracture outcomes in a clinical trial. Evidence access: Primary full text Strontium potently inhibits mineralisation in bone-forming primary rat osteoblast cultures and reduces numbers of osteoclasts in mouse marrow cultures. · 2014 · https://pubmed.ncbi.nlm.nih.gov/25048011/ · DOI 10.1007/s00198-014-2791-5
Complete structured claim and evidence
Continuous strontium ranelate at 0.01, 0.1 and 1 mM caused 59%, 98% and 100% inhibition of mineralization in 14-day rat calvarial osteoblast cultures; strontium chloride also strongly inhibited it.
Strontium ranelate → Mineralization in strontium-treated rat calvarial osteoblast cultures source_derived_draftungraded
Experimental context and source evidence
evidence_access
Primary full text
experimental_model
Primary rat osteoblast cultures; quantified mineralized nodules.
limitations
Full-text results clarify these numbers are percent inhibition, despite ambiguous abstract wording. Species, culture conditions and soluble exposure require matched comparison.
nutrient_topic
Strontium collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Strontium
plain_language
This study found less mineral deposition, directly challenging a general stimulatory claim.
primary_references
Strontium potently inhibits mineralisation in bone-forming primary rat osteoblast cultures and reduces numbers of osteoclasts in mouse marrow cultures. · 2014 · https://pubmed.ncbi.nlm.nih.gov/25048011/ · DOI 10.1007/s00198-014-2791-5
Strontium: calcium interactions, cellular mechanisms and mineralization (2026-09-19) · lines 270–276
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Primary rat osteoblast cultures; quantified mineralized nodules. · source_derived_draft · unverified_draft
## strontium-rat-mineralization-negative This study found less mineral deposition, directly challenging a general stimulatory claim. Continuous strontium ranelate at 0.01, 0.1 and 1 mM caused 59%, 98% and 100% inhibition of mineralization in 14-day rat calvarial osteoblast cultures; strontium chloride also strongly inhibited it. Model: Primary rat osteoblast cultures; quantified mineralized nodules. Limitations: Full-text results clarify these numbers are percent inhibition, despite ambiguous abstract wording. Species, culture conditions and soluble exposure require matched comparison. Evidence access: Primary full text Strontium potently inhibits mineralisation in bone-forming primary rat osteoblast cultures and reduces numbers of osteoclasts in mouse marrow cultures. · 2014 · https://pubmed.ncbi.nlm.nih.gov/25048011/ · DOI 10.1007/s00198-014-2791-5
Complete structured claim and evidence

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Open hypotheses

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Mineralization in strontium-treated rat calvarial osteoblast cultures