Component
Cardiac early afterdepolarizations
Cardiac early afterdepolarizations; interpretation depends on linked experimental 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
Untubulated atrial cells developed low-K early afterdepolarizations associated with sodium-current reactivation, hyperpolarization and brief action potentials.
Experimental context and source evidence
- availability_state
- nutrient_deficiency Imported condition classification; unverified.
- cross_nutrient
- Low extracellular potassium changes sodium-channel availability in this cell population.
- experimental_model
- Rat atrial electrophysiology and modeling.
- limitations
- Distinct from the calcium-overload route in tubulated cells.
- nutrient_topic
- Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
- organism
- Rat
- plain_language
- Some atrial cells became unstable through sodium-channel behavior.
- primary_references
- [tazmini-2020-cardiac] Hypokalemia Promotes Arrhythmia by Distinct Mechanisms in Atrial and Ventricular Myocytes (2020). https://pmc.ncbi.nlm.nih.gov/articles/PMC7098435/ DOI: 10.1161/CIRCRESAHA.119.315641
- tissue_or_cell_type
- Untubulated atrial myocytes
- trigger_kind
- nutrient_deficiency Imported condition classification; unverified.
Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 681–691
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Rat atrial electrophysiology and modeling. · source_derived_draft · unverified_draft
### k-low-atrial-sodium-reactivation Untubulated atrial cells developed low-K early afterdepolarizations associated with sodium-current reactivation, hyperpolarization and brief action potentials. Condition category: nutrient_deficiency nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Some atrial cells became unstable through sodium-channel behavior. organism: Rat tissue_or_cell_type: Untubulated atrial myocytes experimental_model: Rat atrial electrophysiology and modeling. limitations: Distinct from the calcium-overload route in tubulated cells. cross_nutrient: Low extracellular potassium changes sodium-channel availability in this cell population. [tazmini-2020-cardiac] Hypokalemia Promotes Arrhythmia by Distinct Mechanisms in Atrial and Ventricular Myocytes (2020). https://pmc.ncbi.nlm.nih.gov/articles/PMC7098435/ DOI: 10.1161/CIRCRESAHA.119.315641
Complete structured claim and evidenceGS-967 suppressed hypokalemic early afterdepolarizations; simulations implicated CaMKII-enhanced late sodium current in a sodium/calcium feedback loop.
Experimental context and source evidence
- availability_state
- nutrient_deficiency Imported condition classification; unverified.
- cross_nutrient
- Sodium entry and calcium loading interact during low extracellular potassium.
- experimental_model
- Low-K cardiac inhibition experiments and computational model.
- limitations
- The complete feedback sequence is model-supported, not every step directly measured.
- nutrient_topic
- Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
- organism
- Rabbit/rat and mathematical model
- plain_language
- Persistent sodium entry helped sustain low-potassium electrical instability.
- primary_references
- [pezhouman-2015-camkii] Molecular Basis of Hypokalemia-Induced Ventricular Fibrillation (2015). https://pubmed.ncbi.nlm.nih.gov/26269574/ DOI: 10.1161/CIRCULATIONAHA.115.016217
- tissue_or_cell_type
- Ventricular myocardium
- trigger_kind
- nutrient_deficiency Imported condition classification; unverified.
Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 657–667
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Low-K cardiac inhibition experiments and computational model. · source_derived_draft · unverified_draft
### k-low-late-sodium-feedback GS-967 suppressed hypokalemic early afterdepolarizations; simulations implicated CaMKII-enhanced late sodium current in a sodium/calcium feedback loop. Condition category: nutrient_deficiency nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Persistent sodium entry helped sustain low-potassium electrical instability. organism: Rabbit/rat and mathematical model tissue_or_cell_type: Ventricular myocardium experimental_model: Low-K cardiac inhibition experiments and computational model. limitations: The complete feedback sequence is model-supported, not every step directly measured. cross_nutrient: Sodium entry and calcium loading interact during low extracellular potassium. [pezhouman-2015-camkii] Molecular Basis of Hypokalemia-Induced Ventricular Fibrillation (2015). https://pubmed.ncbi.nlm.nih.gov/26269574/ DOI: 10.1161/CIRCULATIONAHA.115.016217
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.