Component
Plasma-membrane cholesterol content
Plasma-membrane cholesterol content. Species, exposure and limitations are retained in each linked claim.
2 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
Chromium picolinate protected hyperinsulinemic L6 myotubes against excess membrane cholesterol.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/chromium-research/24725432.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f172a147ded27e509e27d5bcc53ad6dc3e8b22b424ab021515b205ae29bccbc4", "start_char": 0, "end_char": 1788, "text_sha256": "f172a147ded27e509e27d5bcc53ad6dc3e8b22b424ab021515b205ae29bccbc4"}
- experimental_model
- Hyperinsulinemia model with AMPK silencing
- exposure
- Chromium picolinate during chronic low-dose insulin exposure, followed by acute insulin response; AMPK siRNA
- limitations
- Cell-culture mechanism. The indexed abstract identifies AMPK depletion without resolving the targeted catalytic isoform; family-level identity is retained. This is not a dietary repletion or human treatment experiment.
- nutrient_topic
- Chromium research collection; topical membership is not evidence of a direct dietary effect. · Chromium
- organism
- Rat L6 skeletal muscle myotubes
- plain_language
- The treatment prevented a membrane-lipid change associated with insulin resistance in this model.
- primary_references
- [chromium-p24725432] Chromium enhances insulin responsiveness via AMPK. (2014). https://pubmed.ncbi.nlm.nih.gov/24725432/ DOI: 10.1016/j.jnutbio.2014.01.007
- tissue_or_cell_type
- Cultured muscle plasma membrane and cortical actin
Chromium: transport, insulin signaling, nutrient interactions and essentiality debate (2026-09-17) · lines 367–378
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Hyperinsulinemia model with AMPK silencing · source_derived_draft · unverified_draft
### chromium-membrane-cholesterol-protection Chromium picolinate protected hyperinsulinemic L6 myotubes against excess membrane cholesterol. Condition category: normal nutrient_topic: Chromium research collection; topical membership is not evidence of a direct dietary effect. plain_language: The treatment prevented a membrane-lipid change associated with insulin resistance in this model. organism: Rat L6 skeletal muscle myotubes tissue_or_cell_type: Cultured muscle plasma membrane and cortical actin experimental_model: Hyperinsulinemia model with AMPK silencing limitations: Cell-culture mechanism. The indexed abstract identifies AMPK depletion without resolving the targeted catalytic isoform; family-level identity is retained. This is not a dietary repletion or human treatment experiment. exposure: Chromium picolinate during chronic low-dose insulin exposure, followed by acute insulin response; AMPK siRNA evidence_span: {"source_cache": "artifacts/chromium-research/24725432.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "f172a147ded27e509e27d5bcc53ad6dc3e8b22b424ab021515b205ae29bccbc4", "start_char": 0, "end_char": 1788, "text_sha256": "f172a147ded27e509e27d5bcc53ad6dc3e8b22b424ab021515b205ae29bccbc4"} [chromium-p24725432] Chromium enhances insulin responsiveness via AMPK. (2014). https://pubmed.ncbi.nlm.nih.gov/24725432/ DOI: 10.1016/j.jnutbio.2014.01.007
Complete structured claim and evidence
Where it participates (unsigned role)
Chromium-associated membrane-cholesterol reduction accompanied enhanced insulin-stimulated glucose uptake, and cholesterol add-back prevented the trafficking and uptake benefit.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/chromium-research/16339278.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "57c07800ec80a0386c1c510fe0bd73bc5ebf196541580a5255565f8deafde657", "start_char": 0, "end_char": 1949, "text_sha256": "57c07800ec80a0386c1c510fe0bd73bc5ebf196541580a5255565f8deafde657"}
- experimental_model
- GLUT4 trafficking, glucose uptake and cholesterol add-back experiments
- exposure
- Chromium(III) chloride or chromium picolinate; insulin stimulation and cholesterol manipulation
- limitations
- Cell-culture pharmacology does not establish an essential dietary function. Vesicle arrival near the membrane and actual membrane insertion are different observations; no amplification of the tested proximal insulin signals was found.
- nutrient_topic
- Chromium research collection; topical membership is not evidence of a direct dietary effect. · Chromium
- organism
- Mouse 3T3-L1 adipocytes
- plain_language
- Putting cholesterol back into the membrane removed the effect, supporting a membrane-dependent mechanism.
- primary_references
- [chromium-p16339278] Chromium activates glucose transporter 4 trafficking and enhances insulin-stimulated glucose transport in 3T3-L1 adipocytes via a cholesterol-dependent mechanism. (2006). https://pubmed.ncbi.nlm.nih.gov/16339278/ DOI: 10.1210/me.2005-0255
- tissue_or_cell_type
- Cultured adipocyte plasma membrane
Chromium: transport, insulin signaling, nutrient interactions and essentiality debate (2026-09-17) · lines 328–339
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · GLUT4 trafficking, glucose uptake and cholesterol add-back experiments · source_derived_draft · unverified_draft
### chromium-cholesterol-dependent-uptake Chromium-associated membrane-cholesterol reduction accompanied enhanced insulin-stimulated glucose uptake, and cholesterol add-back prevented the trafficking and uptake benefit. Condition category: normal nutrient_topic: Chromium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Putting cholesterol back into the membrane removed the effect, supporting a membrane-dependent mechanism. organism: Mouse 3T3-L1 adipocytes tissue_or_cell_type: Cultured adipocyte plasma membrane experimental_model: GLUT4 trafficking, glucose uptake and cholesterol add-back experiments limitations: Cell-culture pharmacology does not establish an essential dietary function. Vesicle arrival near the membrane and actual membrane insertion are different observations; no amplification of the tested proximal insulin signals was found. exposure: Chromium(III) chloride or chromium picolinate; insulin stimulation and cholesterol manipulation evidence_span: {"source_cache": "artifacts/chromium-research/16339278.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "57c07800ec80a0386c1c510fe0bd73bc5ebf196541580a5255565f8deafde657", "start_char": 0, "end_char": 1949, "text_sha256": "57c07800ec80a0386c1c510fe0bd73bc5ebf196541580a5255565f8deafde657"} [chromium-p16339278] Chromium activates glucose transporter 4 trafficking and enhances insulin-stimulated glucose transport in 3T3-L1 adipocytes via a cholesterol-dependent mechanism. (2006). https://pubmed.ncbi.nlm.nih.gov/16339278/ DOI: 10.1210/me.2005-0255
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.