Component

Bisnorbiotin

Bisnorbiotin. Species, exposure and limitations are retained in each linked claim.

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

Where it participates (unsigned role)

  1. Urinary bisnorbiotin was higher in both carbamazepine/phenytoin-treated and phenobarbital-treated children than in controls.

    Carbamazepine → Human urinary bisnorbiotin excretion source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    biomarker_context Imported condition classification; unverified.
    evidence_span
    {"source_cache": "artifacts/biotin-research/9523856.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "a337d853fbf3d26e053dfd6d17b2e1729c993a0501563d0524ebbee7b44d5136", "start_char": 0, "end_char": 1876, "text_sha256": "a337d853fbf3d26e053dfd6d17b2e1729c993a0501563d0524ebbee7b44d5136"}
    experimental_model
    Observational urine comparison: 7 children receiving carbamazepine/phenytoin, 6 phenobarbital, 16 controls
    exposure
    Long-term anticonvulsant treatment
    limitations
    Untimed urine, small nonrandomized groups and discordant markers limit diagnosis; faster turnover is not a universal deficiency diagnosis.
    nutrient_topic
    Biotin research collection; topical membership is not evidence of a direct dietary effect. · Biotin
    organism
    Homo sapiens
    plain_language
    Some anticonvulsant-treated children excreted more of a biotin breakdown product.
    primary_references
    [b7-p9523856] Disturbances in biotin metabolism in children undergoing long-term anticonvulsant therapy. (1998). https://pubmed.ncbi.nlm.nih.gov/9523856/ DOI: 10.1097/00005176-199803000-00002
    tissue_or_cell_type
    Urine
    trigger_kind
    biomarker_context Imported condition classification; unverified.

    Biotin: carboxylases, recycling, deficiency and nutrient interactions (2026-09-17) · lines 299–310

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Observational urine comparison: 7 children receiving carbamazepine/phenytoin, 6 phenobarbital, 16 controls · source_derived_draft · unverified_draft

    ### b7-drug-bisnorbiotin Urinary bisnorbiotin was higher in both carbamazepine/phenytoin-treated and phenobarbital-treated children than in controls. Condition category: biomarker_context nutrient_topic: Biotin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Some anticonvulsant-treated children excreted more of a biotin breakdown product. organism: Homo sapiens tissue_or_cell_type: Urine experimental_model: Observational urine comparison: 7 children receiving carbamazepine/phenytoin, 6 phenobarbital, 16 controls limitations: Untimed urine, small nonrandomized groups and discordant markers limit diagnosis; faster turnover is not a universal deficiency diagnosis. exposure: Long-term anticonvulsant treatment evidence_span: {"source_cache": "artifacts/biotin-research/9523856.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "a337d853fbf3d26e053dfd6d17b2e1729c993a0501563d0524ebbee7b44d5136", "start_char": 0, "end_char": 1876, "text_sha256": "a337d853fbf3d26e053dfd6d17b2e1729c993a0501563d0524ebbee7b44d5136"} [b7-p9523856] Disturbances in biotin metabolism in children undergoing long-term anticonvulsant therapy. (1998). https://pubmed.ncbi.nlm.nih.gov/9523856/ DOI: 10.1097/00005176-199803000-00002
    Complete structured claim and evidence

  2. Lactating women excreted 76% more bisnorbiotin than controls, while 3-HIA and 3-HIA-carnitine excretion were lower.

    Biotin → Human urinary bisnorbiotin excretion source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    biomarker_context Imported condition classification; unverified.
    evidence_span
    {"source_cache": "artifacts/biotin-research/25122647.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "6066b007a013c3c0c69336e7aba0e51baa39e3a24b6eb918cb4778e792376a9b", "start_char": 0, "end_char": 2354, "text_sha256": "6066b007a013c3c0c69336e7aba0e51baa39e3a24b6eb918cb4778e792376a9b"}
    experimental_model
    Controlled feeding: 26 pregnant, 28 lactating and 21 control women
    exposure
    57 micrograms dietary biotin per day for 10–12 weeks
    limitations
    Groups differed in reproductive state. Marker changes do not establish fetal outcomes, universal deficiency or a treatment dose.
    nutrient_topic
    Biotin research collection; topical membership is not evidence of a direct dietary effect. · Biotin
    organism
    Homo sapiens
    plain_language
    Biotin breakdown and leucine-derived markers can diverge during lactation.
    primary_references
    [b7-p25122647] Pregnancy and lactation alter biomarkers of biotin metabolism in women consuming a controlled diet. (2014). https://pubmed.ncbi.nlm.nih.gov/25122647/ DOI: 10.3945/jn.114.194472
    tissue_or_cell_type
    Urine and plasma
    trigger_kind
    biomarker_context Imported condition classification; unverified.

    Biotin: carboxylases, recycling, deficiency and nutrient interactions (2026-09-17) · lines 1001–1012

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Controlled feeding: 26 pregnant, 28 lactating and 21 control women · source_derived_draft · unverified_draft

    ### b7-lactation-bisnor Lactating women excreted 76% more bisnorbiotin than controls, while 3-HIA and 3-HIA-carnitine excretion were lower. Condition category: biomarker_context nutrient_topic: Biotin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Biotin breakdown and leucine-derived markers can diverge during lactation. organism: Homo sapiens tissue_or_cell_type: Urine and plasma experimental_model: Controlled feeding: 26 pregnant, 28 lactating and 21 control women limitations: Groups differed in reproductive state. Marker changes do not establish fetal outcomes, universal deficiency or a treatment dose. exposure: 57 micrograms dietary biotin per day for 10–12 weeks evidence_span: {"source_cache": "artifacts/biotin-research/25122647.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "6066b007a013c3c0c69336e7aba0e51baa39e3a24b6eb918cb4778e792376a9b", "start_char": 0, "end_char": 2354, "text_sha256": "6066b007a013c3c0c69336e7aba0e51baa39e3a24b6eb918cb4778e792376a9b"} [b7-p25122647] Pregnancy and lactation alter biomarkers of biotin metabolism in women consuming a controlled diet. (2014). https://pubmed.ncbi.nlm.nih.gov/25122647/ DOI: 10.3945/jn.114.194472
    Complete structured claim and evidence

  3. Biotin represented more than half of recovered urinary biotin-related material; bisnorbiotin, sulfoxide and other metabolites contributed the remainder.

    Biotin → Human urinary biotin-metabolite excretion source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/biotin-research/10075337.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "8eb8ff3bb786de29bfda6f596af2fe6e8fdf366d9cad84065176a825d6035ebd", "start_char": 0, "end_char": 1677, "text_sha256": "8eb8ff3bb786de29bfda6f596af2fe6e8fdf366d9cad84065176a825d6035ebd"}
    experimental_model
    Crossover oral and intravenous administration in 6 healthy adults
    exposure
    Oral 2.1, 8.2 or 81.9 micromol; intravenous 18.4 micromol biotin
    limitations
    Bioavailability was inferred from urinary recovery; the anomalous smallest dose and small healthy sample limit generalization to malabsorption or transporter disease.
    nutrient_topic
    Biotin research collection; topical membership is not evidence of a direct dietary effect. · Biotin
    organism
    Homo sapiens
    plain_language
    A urine assay must distinguish intact biotin from its breakdown products.
    primary_references
    [b7-p10075337] Bioavailability of biotin given orally to humans in pharmacologic doses. (1999). https://pubmed.ncbi.nlm.nih.gov/10075337/ DOI: 10.1093/ajcn/69.3.504
    tissue_or_cell_type
    Whole-body urinary recovery

    Biotin: carboxylases, recycling, deficiency and nutrient interactions (2026-09-17) · lines 338–349

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Crossover oral and intravenous administration in 6 healthy adults · source_derived_draft · unverified_draft

    ### b7-urinary-metabolites Biotin represented more than half of recovered urinary biotin-related material; bisnorbiotin, sulfoxide and other metabolites contributed the remainder. Condition category: normal nutrient_topic: Biotin research collection; topical membership is not evidence of a direct dietary effect. plain_language: A urine assay must distinguish intact biotin from its breakdown products. organism: Homo sapiens tissue_or_cell_type: Whole-body urinary recovery experimental_model: Crossover oral and intravenous administration in 6 healthy adults limitations: Bioavailability was inferred from urinary recovery; the anomalous smallest dose and small healthy sample limit generalization to malabsorption or transporter disease. exposure: Oral 2.1, 8.2 or 81.9 micromol; intravenous 18.4 micromol biotin evidence_span: {"source_cache": "artifacts/biotin-research/10075337.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "8eb8ff3bb786de29bfda6f596af2fe6e8fdf366d9cad84065176a825d6035ebd", "start_char": 0, "end_char": 1677, "text_sha256": "8eb8ff3bb786de29bfda6f596af2fe6e8fdf366d9cad84065176a825d6035ebd"} [b7-p10075337] Bioavailability of biotin given orally to humans in pharmacologic doses. (1999). https://pubmed.ncbi.nlm.nih.gov/10075337/ DOI: 10.1093/ajcn/69.3.504
    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