Component
Vascular smooth muscle hyperpolarization
Independent biological entity. Read linked claims for experimental scope and context.
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
Small extracellular potassium elevations relaxed the studied rat arteries through ouabain/barium-sensitive pump and inward-rectifier pathways.
Experimental context and source evidence
- cross_nutrient
- Potassium/sodium pump and potassium channels -> vessel response.
- experimental_model
- Isolated rat artery electrophysiology.
- limitations
- Channel family inference; not every artery or potassium concentration responds this way.
- nutrient_topic
- Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
- organism
- Rattus norvegicus
- plain_language
- A modest local potassium rise can relax a vessel under particular conditions.
- primary_references
- [k-edwards1998] K+ is an endothelium-derived hyperpolarizing factor in rat arteries (1998). https://pubmed.ncbi.nlm.nih.gov/9834033/ DOI: 10.1038/24388
- tissue_or_cell_type
- Arterial smooth muscle
Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 1592–1602
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Isolated rat artery electrophysiology. · source_derived_draft · unverified_draft
### k-vascular-pump-kir-relaxation Small extracellular potassium elevations relaxed the studied rat arteries through ouabain/barium-sensitive pump and inward-rectifier pathways. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: A modest local potassium rise can relax a vessel under particular conditions. organism: Rattus norvegicus tissue_or_cell_type: Arterial smooth muscle experimental_model: Isolated rat artery electrophysiology. limitations: Channel family inference; not every artery or potassium concentration responds this way. cross_nutrient: Potassium/sodium pump and potassium channels -> vessel response. [k-edwards1998] K+ is an endothelium-derived hyperpolarizing factor in rat arteries (1998). https://pubmed.ncbi.nlm.nih.gov/9834033/ DOI: 10.1038/24388
Complete structured claim and evidence
Where it participates (unsigned role)
In pressurized rat mesenteric arteries, raised potassium did not reliably reproduce acetylcholine-evoked EDHF relaxation or hyperpolarization.
Experimental context and source evidence
- experimental_model
- Myogenic tone at 60/90 mmHg, nitric oxide and prostanoid pathways blocked.
- limitations
- Preparation and tone differ from earlier work; record scope rather than inventing an unexplained contradiction.
- nutrient_topic
- Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
- organism
- Rattus norvegicus
- plain_language
- Potassium is not a universal explanation for endothelial relaxation.
- primary_references
- [k-brochet2014] A comparison of responses to raised extracellular potassium and endothelium-derived hyperpolarizing factor (EDHF) in rat pressurised mesenteric arteries (2014). https://pubmed.ncbi.nlm.nih.gov/25372386/ DOI: 10.1371/journal.pone.0111977
- tissue_or_cell_type
- Mesenteric resistance arteries
Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 1627–1636
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Myogenic tone at 60/90 mmHg, nitric oxide and prostanoid pathways blocked. · source_derived_draft · unverified_draft
### k-vascular-edhf-context-boundary In pressurized rat mesenteric arteries, raised potassium did not reliably reproduce acetylcholine-evoked EDHF relaxation or hyperpolarization. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Potassium is not a universal explanation for endothelial relaxation. organism: Rattus norvegicus tissue_or_cell_type: Mesenteric resistance arteries experimental_model: Myogenic tone at 60/90 mmHg, nitric oxide and prostanoid pathways blocked. limitations: Preparation and tone differ from earlier work; record scope rather than inventing an unexplained contradiction. [k-brochet2014] A comparison of responses to raised extracellular potassium and endothelium-derived hyperpolarizing factor (EDHF) in rat pressurised mesenteric arteries (2014). https://pubmed.ncbi.nlm.nih.gov/25372386/ DOI: 10.1371/journal.pone.0111977
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.