Component
Cellular ROS assay signal
Assay-defined intracellular oxidant signal; probe and model retained in claims.
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
The combination had a lower intracellular ROS assay signal than ferric ammonium citrate alone.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/chromium-research/37156991.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "e5b7952975edd461bc01f9a4389588789a7d1b7dedf56fb97270051092ae6cda", "start_char": 0, "end_char": 1621, "text_sha256": "e5b7952975edd461bc01f9a4389588789a7d1b7dedf56fb97270051092ae6cda"}
- experimental_model
- C2C12 cell experiments with supporting database pathway analysis
- exposure
- Chromium picolinate, ferric ammonium citrate and combination
- limitations
- Pathway databases generate hypotheses. Co-changing ROS and signaling measurements do not alone establish a unique causal sequence; no human iron-overload treatment was tested.
- nutrient_topic
- Chromium research collection; topical membership is not evidence of a direct dietary effect. · Chromium
- organism
- Mouse C2C12 skeletal-muscle cells
- plain_language
- A measured oxidative-stress signal was lower with co-treatment.
- primary_references
- [chromium-p37156991] Antagonizing Effects of Chromium Against Iron-Decreased Glucose Uptake by Regulating ROS-Mediated PI3K/Akt/GLUT4 Signaling Pathway in C2C12. (2024). https://pubmed.ncbi.nlm.nih.gov/37156991/ DOI: 10.1007/s12011-023-03695-z
- tissue_or_cell_type
- Cellular glucose uptake, ROS assays and signaling proteins
Chromium: transport, insulin signaling, nutrient interactions and essentiality debate (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 · C2C12 cell experiments with supporting database pathway analysis · source_derived_draft · unverified_draft
### chromium-iron-cell-ros The combination had a lower intracellular ROS assay signal than ferric ammonium citrate alone. Condition category: normal nutrient_topic: Chromium research collection; topical membership is not evidence of a direct dietary effect. plain_language: A measured oxidative-stress signal was lower with co-treatment. organism: Mouse C2C12 skeletal-muscle cells tissue_or_cell_type: Cellular glucose uptake, ROS assays and signaling proteins experimental_model: C2C12 cell experiments with supporting database pathway analysis limitations: Pathway databases generate hypotheses. Co-changing ROS and signaling measurements do not alone establish a unique causal sequence; no human iron-overload treatment was tested. exposure: Chromium picolinate, ferric ammonium citrate and combination evidence_span: {"source_cache": "artifacts/chromium-research/37156991.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "e5b7952975edd461bc01f9a4389588789a7d1b7dedf56fb97270051092ae6cda", "start_char": 0, "end_char": 1621, "text_sha256": "e5b7952975edd461bc01f9a4389588789a7d1b7dedf56fb97270051092ae6cda"} [chromium-p37156991] Antagonizing Effects of Chromium Against Iron-Decreased Glucose Uptake by Regulating ROS-Mediated PI3K/Akt/GLUT4 Signaling Pathway in C2C12. (2024). https://pubmed.ncbi.nlm.nih.gov/37156991/ DOI: 10.1007/s12011-023-03695-z
Complete structured claim and evidenceThree days after NADK2 knockdown, HEK293A intracellular ROS-probe signals increased with and without the tested menadione challenge.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- evidence_span
- {"source_cache": "artifacts/niacin-redox-sources/nadk2-2012.fulltext.txt", "locator": "Results", "start_char": 16830, "end_char": 18219, "file_sha256": "65209c0b4ea7220bc95afdd182e40910f2445345172956e85552d5c6db649648", "text_sha256": "5de49f80d76c73b6a308096c07b330e8d3d53ee28c6a06f4b2a331e4798b45d7"}
- experimental_model
- siRNA knockdown; CM-H2DCFDA readout
- exposure
- Three-day knockdown; vehicle or 100 μM menadione for 30 min in ROS assay
- limitations
- CM-H2DCFDA is an intracellular probe; do not relabel this result as a direct measurement of mitochondrial ROS or assume dietary niacin deficiency.
- nutrient_topic
- Niacin research collection; topical membership is not evidence of a direct dietary effect. · Niacin (vitamin B3)
- organism
- Homo sapiens
- plain_language
- Loss of the kinase increased a cellular oxidant readout in this experiment.
- primary_references
- [nadk2-2012] Identification and characterization of a human mitochondrial NAD kinase. (2012). https://pubmed.ncbi.nlm.nih.gov/23212377/ DOI: 10.1038/ncomms2262
- tissue_or_cell_type
- HEK293A cells
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Niacin: NAD metabolism, deficiency and nutrient interactions (2026-09-17) · lines 938–949
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · siRNA knockdown; CM-H2DCFDA readout · source_derived_draft · unverified_draft
### b3-redox-nadk2-knockdown-ros Three days after NADK2 knockdown, HEK293A intracellular ROS-probe signals increased with and without the tested menadione challenge. Condition category: machinery_impairment nutrient_topic: Niacin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Loss of the kinase increased a cellular oxidant readout in this experiment. organism: Homo sapiens tissue_or_cell_type: HEK293A cells experimental_model: siRNA knockdown; CM-H2DCFDA readout limitations: CM-H2DCFDA is an intracellular probe; do not relabel this result as a direct measurement of mitochondrial ROS or assume dietary niacin deficiency. exposure: Three-day knockdown; vehicle or 100 μM menadione for 30 min in ROS assay evidence_span: {"source_cache": "artifacts/niacin-redox-sources/nadk2-2012.fulltext.txt", "locator": "Results", "start_char": 16830, "end_char": 18219, "file_sha256": "65209c0b4ea7220bc95afdd182e40910f2445345172956e85552d5c6db649648", "text_sha256": "5de49f80d76c73b6a308096c07b330e8d3d53ee28c6a06f4b2a331e4798b45d7"} [nadk2-2012] Identification and characterization of a human mitochondrial NAD kinase. (2012). https://pubmed.ncbi.nlm.nih.gov/23212377/ DOI: 10.1038/ncomms2262
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.