Component

Colonic potassium secretion

Independent biological entity. Read linked claims for experimental scope and context.

3 recorded relationships. Experimental role, claim status and evidence remain attached to each record.

Read recorded mechanisms Open recursive mind map

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.

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.

Recorded relationships

What acts on it

  1. Luminal barium reduced potassium secretion by about 45% in the kidney-failure group, supporting a potassium-channel contribution.

    Barium ion → Colonic potassium secretion source_derived_draftungraded
    Experimental context and source evidence
    experimental_model
    Rectal dialysis with 5 mmol/L barium.
    limitations
    Barium is not BK-specific; combine this with expression evidence without asserting exclusive BK mediation.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Homo sapiens
    plain_language
    Part of the extra gut potassium loss depended on a blocker-sensitive pathway.
    primary_references
    [k-sandle2005] Enhanced large intestinal potassium permeability in end-stage renal disease (2005). https://pubmed.ncbi.nlm.nih.gov/15772943/ DOI: 10.1002/path.1750
    tissue_or_cell_type
    Human rectum

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 1487–1496

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Rectal dialysis with 5 mmol/L barium. · source_derived_draft · unverified_draft

    ### k-esrd-colonic-barium-sensitive-secretion Luminal barium reduced potassium secretion by about 45% in the kidney-failure group, supporting a potassium-channel contribution. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Part of the extra gut potassium loss depended on a blocker-sensitive pathway. organism: Homo sapiens tissue_or_cell_type: Human rectum experimental_model: Rectal dialysis with 5 mmol/L barium. limitations: Barium is not BK-specific; combine this with expression evidence without asserting exclusive BK mediation. [k-sandle2005] Enhanced large intestinal potassium permeability in end-stage renal disease (2005). https://pubmed.ncbi.nlm.nih.gov/15772943/ DOI: 10.1002/path.1750
    Complete structured claim and evidence

  2. Patients with end-stage renal disease showed higher colonic BK expression and approximately threefold higher rectal potassium secretion than controls.

    Large-conductance calcium-activated potassium channel alpha subunit → Colonic potassium secretion source_derived_draftungraded
    Experimental context and source evidence
    cross_nutrient
    Kidney failure -> extra-renal potassium handling.
    experimental_model
    Small human biopsy and rectal-dialysis groups.
    limitations
    Expression plus association does not identify every flux pathway; no diet intervention.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Homo sapiens
    plain_language
    The colon can increase its potassium-disposal role when kidney function is severely reduced.
    primary_references
    [k-sandle2005] Enhanced large intestinal potassium permeability in end-stage renal disease (2005). https://pubmed.ncbi.nlm.nih.gov/15772943/ DOI: 10.1002/path.1750
    tissue_or_cell_type
    Human distal colon and rectum

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 1475–1485

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Small human biopsy and rectal-dialysis groups. · source_derived_draft · unverified_draft

    ### k-esrd-colonic-bk-upregulation Patients with end-stage renal disease showed higher colonic BK expression and approximately threefold higher rectal potassium secretion than controls. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: The colon can increase its potassium-disposal role when kidney function is severely reduced. organism: Homo sapiens tissue_or_cell_type: Human distal colon and rectum experimental_model: Small human biopsy and rectal-dialysis groups. limitations: Expression plus association does not identify every flux pathway; no diet intervention. cross_nutrient: Kidney failure -> extra-renal potassium handling. [k-sandle2005] Enhanced large intestinal potassium permeability in end-stage renal disease (2005). https://pubmed.ncbi.nlm.nih.gov/15772943/ DOI: 10.1002/path.1750
    Complete structured claim and evidence

  3. Marked BK overexpression accompanied colonic potassium-secretory diarrhea and hypokalemia in the reported patient.

    Colonic BK channel abundance → Colonic potassium secretion source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    nutrient_deficiency Imported condition classification; unverified.
    experimental_model
    Single case; symptoms resolved after colectomy.
    limitations
    The proposed shock/ischemia-to-BK chain remains a hypothesis.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Homo sapiens
    plain_language
    Severe potassium loss can occur through the gut even in kidney failure.
    primary_references
    [k-van-dinter2008] Over-expression of colonic K+ channels associated with severe potassium secretory diarrhoea after haemorrhagic shock (2008). https://pubmed.ncbi.nlm.nih.gov/18653901/ DOI: 10.1093/ndt/gfn411
    tissue_or_cell_type
    Human colon
    trigger_kind
    nutrient_deficiency Imported condition classification; unverified.

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 1498–1507

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Single case; symptoms resolved after colectomy. · source_derived_draft · unverified_draft

    ### k-secretory-diarrhea-bk-case Marked BK overexpression accompanied colonic potassium-secretory diarrhea and hypokalemia in the reported patient. Condition category: nutrient_deficiency nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Severe potassium loss can occur through the gut even in kidney failure. organism: Homo sapiens tissue_or_cell_type: Human colon experimental_model: Single case; symptoms resolved after colectomy. limitations: The proposed shock/ischemia-to-BK chain remains a hypothesis. [k-van-dinter2008] Over-expression of colonic K+ channels associated with severe potassium secretory diarrhoea after haemorrhagic shock (2008). https://pubmed.ncbi.nlm.nih.gov/18653901/ DOI: 10.1093/ndt/gfn411
    Complete structured claim and evidence

In the sources

Preserved passages that mention this component, quoted exactly. Open one to read it in context.

    This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.

    Evidence, AI assistance and curation standards