Component
Osteoclastic bone resorption
Independent biological entity. Read linked claims for experimental scope and context.
4 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What acts on it
A calcium-deficient diet increased osteoclasts and bone loss in adult mice; osteocyte-directed Rankl deletion blunted the response.
Experimental context and source evidence
- availability_state
- nutrient_deficiency Imported condition classification; unverified.
- experimental_model
- 30 days of 0.01% versus 0.516% dietary calcium
- limitations
- Mouse diet and Cre-targeting scope limit human generalization; bone loss was blunted, not necessarily abolished.
- nutrient_topic
- Calcium research collection; topical membership is not evidence of a direct dietary effect. · Calcium
- organism
- Mus musculus
- plain_language
- When dietary calcium was severely restricted, osteocyte RANKL helped drive withdrawal from bone.
- primary_references
- [xiong2014] Osteocyte-derived RANKL is a critical mediator of the increased bone resorption caused by dietary calcium deficiency (2014). https://pmc.ncbi.nlm.nih.gov/articles/PMC4125539/ DOI: 10.1016/j.bone.2014.06.006
- tissue_or_cell_type
- Adult cortical and cancellous bone
- trigger_kind
- nutrient_deficiency Imported condition classification; unverified.
Calcium: mechanism-first literature curation (2026-09-17) · lines 1070–1079
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · 30 days of 0.01% versus 0.516% dietary calcium · source_derived_draft · unverified_draft
### low-calcium-diet-osteocyte-rankl-resorption A calcium-deficient diet increased osteoclasts and bone loss in adult mice; osteocyte-directed Rankl deletion blunted the response. Condition category: nutrient_deficiency nutrient_topic: Calcium research collection; topical membership is not evidence of a direct dietary effect. plain_language: When dietary calcium was severely restricted, osteocyte RANKL helped drive withdrawal from bone. organism: Mus musculus tissue_or_cell_type: Adult cortical and cancellous bone experimental_model: 30 days of 0.01% versus 0.516% dietary calcium limitations: Mouse diet and Cre-targeting scope limit human generalization; bone loss was blunted, not necessarily abolished. [xiong2014] Osteocyte-derived RANKL is a critical mediator of the increased bone resorption caused by dietary calcium deficiency (2014). https://pmc.ncbi.nlm.nih.gov/articles/PMC4125539/ DOI: 10.1016/j.bone.2014.06.006
Complete structured claim and evidenceClcn7-null mice had severe osteopetrosis despite normal osteoclast numbers.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- evidence_span
- {"source_cache": "artifacts/chloride-research/11207362.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "5e10ae61257fa402ab9e10d55af44013139462a9d85236b75f5b52bdea0c7b5a", "start_char": 0, "end_char": 821, "text_sha256": "5e10ae61257fa402ab9e10d55af44013139462a9d85236b75f5b52bdea0c7b5a"}
- experimental_model
- Clcn7 knockout and human mutation identification
- exposure
- ClC-7 loss
- limitations
- Historical title calls ClC-7 a channel; current exchanger classification does not change the reported knockout phenotype. Not a dietary chloride study.
- nutrient_topic
- Chloride research collection; topical membership is not evidence of a direct dietary effect. · Chloride
- organism
- Mouse; human infantile osteopetrosis patient
- plain_language
- Having bone-resorbing cells is insufficient when their transport machinery fails.
- primary_references
- [chloride-p11207362] Loss of the ClC-7 chloride channel leads to osteopetrosis in mice and man. (2001). https://pubmed.ncbi.nlm.nih.gov/11207362/ DOI: 10.1016/s0092-8674(01)00206-9
- tissue_or_cell_type
- Osteoclast ruffled border
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Chloride: transport, acid-base balance, nutrient interactions and loss states (2026-09-17) · lines 783–794
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Clcn7 knockout and human mutation identification · source_derived_draft · unverified_draft
### chloride-clc7-bone Clcn7-null mice had severe osteopetrosis despite normal osteoclast numbers. Condition category: machinery_impairment nutrient_topic: Chloride research collection; topical membership is not evidence of a direct dietary effect. plain_language: Having bone-resorbing cells is insufficient when their transport machinery fails. organism: Mouse; human infantile osteopetrosis patient tissue_or_cell_type: Osteoclast ruffled border experimental_model: Clcn7 knockout and human mutation identification limitations: Historical title calls ClC-7 a channel; current exchanger classification does not change the reported knockout phenotype. Not a dietary chloride study. exposure: ClC-7 loss evidence_span: {"source_cache": "artifacts/chloride-research/11207362.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "5e10ae61257fa402ab9e10d55af44013139462a9d85236b75f5b52bdea0c7b5a", "start_char": 0, "end_char": 821, "text_sha256": "5e10ae61257fa402ab9e10d55af44013139462a9d85236b75f5b52bdea0c7b5a"} [chloride-p11207362] Loss of the ClC-7 chloride channel leads to osteopetrosis in mice and man. (2001). https://pubmed.ncbi.nlm.nih.gov/11207362/ DOI: 10.1016/s0092-8674(01)00206-9
Complete structured claim and evidenceExogenous OPG blocked retinoic-acid-stimulated labelled calcium release from calvarial bone.
Experimental context and source evidence
- cross_nutrient
- Vitamin A/RANKL -> calcium release.
- experimental_model
- Same organ culture.
- limitations
- Preparation-specific causal intervention.
- nutrient_topic
- Vitamin A research collection; topical membership is not evidence of a direct dietary effect. · Vitamin A
- organism
- Mus musculus
- plain_language
- Blocking the RANKL signal interrupted the measured resorption response.
- primary_references
- [va-conaway2011] Retinoids stimulate periosteal bone resorption by enhancing the protein RANKL, a response inhibited by monomeric glucocorticoid receptor (2011). https://pubmed.ncbi.nlm.nih.gov/21715325/ DOI: 10.1074/jbc.m111.247734
- tissue_or_cell_type
- Bone
Vitamin A: forms, mechanisms, deficiency and excess (2026-09-17) · lines 1626–1636
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Same organ culture. · source_derived_draft · unverified_draft
### va-opg-blocks-retinoid-calcium-release Exogenous OPG blocked retinoic-acid-stimulated labelled calcium release from calvarial bone. Condition category: normal nutrient_topic: Vitamin A research collection; topical membership is not evidence of a direct dietary effect. plain_language: Blocking the RANKL signal interrupted the measured resorption response. organism: Mus musculus tissue_or_cell_type: Bone experimental_model: Same organ culture. limitations: Preparation-specific causal intervention. cross_nutrient: Vitamin A/RANKL -> calcium release. [va-conaway2011] Retinoids stimulate periosteal bone resorption by enhancing the protein RANKL, a response inhibited by monomeric glucocorticoid receptor (2011). https://pubmed.ncbi.nlm.nih.gov/21715325/ DOI: 10.1074/jbc.m111.247734
Complete structured claim and evidence
Where it participates (unsigned role)
Rank-null mice lacked osteoclasts and developed osteopetrosis; marrow transplantation or receptor re-expression restored osteoclast development.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- experimental_model
- Rank-null mice and genetic rescue
- limitations
- Complete receptor loss is a machinery defect, not evidence of nutritional calcium deficiency.
- nutrient_topic
- Calcium research collection; topical membership is not evidence of a direct dietary effect. · Calcium
- organism
- Mus musculus
- plain_language
- RANK is necessary for normal formation of bone-resorbing cells in this mouse model.
- primary_references
- [li2000] RANK is the intrinsic hematopoietic cell surface receptor that controls osteoclastogenesis and regulation of bone mass and calcium metabolism (2000). https://pubmed.ncbi.nlm.nih.gov/10677500/ DOI: 10.1073/pnas.97.4.1566
- tissue_or_cell_type
- Bone and hematopoietic precursors
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Calcium: mechanism-first literature curation (2026-09-17) · lines 1059–1068
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Rank-null mice and genetic rescue · source_derived_draft · unverified_draft
### rank-loss-blocks-osteoclast-formation Rank-null mice lacked osteoclasts and developed osteopetrosis; marrow transplantation or receptor re-expression restored osteoclast development. Condition category: machinery_impairment nutrient_topic: Calcium research collection; topical membership is not evidence of a direct dietary effect. plain_language: RANK is necessary for normal formation of bone-resorbing cells in this mouse model. organism: Mus musculus tissue_or_cell_type: Bone and hematopoietic precursors experimental_model: Rank-null mice and genetic rescue limitations: Complete receptor loss is a machinery defect, not evidence of nutritional calcium deficiency. [li2000] RANK is the intrinsic hematopoietic cell surface receptor that controls osteoclastogenesis and regulation of bone mass and calcium metabolism (2000). https://pubmed.ncbi.nlm.nih.gov/10677500/ DOI: 10.1073/pnas.97.4.1566
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.