Component

4-Hydroxy-2-nonenal / HNE

Context-specific entity; species, compartment and exposure are stated on each claim.

6 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 it acts on

  1. Gamma-nonalactone was identified among products formed during HNE biotransformation in murine astrocytes.

    4-Hydroxy-2-nonenal / HNE → Gamma-nonalactone source_derived_draftungraded
    Experimental context and source evidence
    dose
    trans-4-Hydroxy-2-nonenal 1, 5 or 15 micromolar
    duration
    10 min
    evidence_access
    Primary PubMed abstract; unresolved method details explicitly retained.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Murine astrocyte cultures
    limitations
    Product identified in an HNE-metabolism study; specific formation enzymes, flux fraction and human relevance remain unresolved. The pyrrole-forming toxicity described for 4-oxo-nonanal is not a gamma-nonalactone finding.
    nutrient_topic
    Gamma-nonalactone flavor-compound chapter; nutrient and drug interactions retain their experimental settings. · Gamma-nonalactone
    organism
    Murine astrocyte cultures
    plain_language
    Gamma-nonalactone was identified among products formed during HNE biotransformation in murine astrocytes.
    primary_references
    Astrocytic biotransformation of trans-4-hydroxy-2-nonenal is dose-dependent. (2006). https://pubmed.ncbi.nlm.nih.gov/16780364/ DOI: 10.1021/tx0600393
    route
    In vitro precursor addition
    tissue
    HNE biotransformation products

    Gamma-nonalactone: mechanisms, molecular forms and cross-actor connections (2026-09-20) · lines 136–145

    Original AI-assisted curation of eight primary studies. Study-specific citations, negative findings and limitations retained. Not publisher full text. · supports · Murine astrocyte cultures · source_derived_draft · unverified_draft

    ## gamma-nonalactone-hne-metabolite Gamma-nonalactone was identified among products formed during HNE biotransformation in murine astrocytes. Model/species: Murine astrocyte cultures Tissue: HNE biotransformation products Exposure: trans-4-Hydroxy-2-nonenal 1, 5 or 15 micromolar Route: In vitro precursor addition Duration: 10 min Limits: Product identified in an HNE-metabolism study; specific formation enzymes, flux fraction and human relevance remain unresolved. The pyrrole-forming toxicity described for 4-oxo-nonanal is not a gamma-nonalactone finding. Primary reference: Astrocytic biotransformation of trans-4-hydroxy-2-nonenal is dose-dependent. (2006). https://pubmed.ncbi.nlm.nih.gov/16780364/ DOI: 10.1021/tx0600393 Access: Primary PubMed abstract; unresolved method details explicitly retained.
    Complete structured claim and evidence

What acts on it

  1. Glutathione reacted more readily than carnosine with HNE in the comparative assay.

    GSH → 4-Hydroxy-2-nonenal / HNE source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary abstract
    experimental_model
    Same biochemical study.
    limitations
    Context difference from DOPAL chemistry, not a contradiction.
    nutrient_topic
    Carnosine collection; isomer, preparation, species, exposure and manipulation remain explicit. · L-Carnosine / beta-alanyl-L-histidine
    plain_language
    The preferred scavenger changed with the target molecule.
    primary_references
    Biochemical characterization of the catecholaldehyde reactivity of L-carnosine and its therapeutic potential in human myocardium. · 2019 · https://pubmed.ncbi.nlm.nih.gov/30191330/ · DOI 10.1007/s00726-018-2647-y

    Carnosine: synthesis, transport, carbonyl chemistry and nutrient interactions (2026-09-19) · lines 284–290

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Same biochemical study. · source_derived_draft · unverified_draft

    ## carnosine-gsh-hne The preferred scavenger changed with the target molecule. Glutathione reacted more readily than carnosine with HNE in the comparative assay. Model: Same biochemical study. Limitations: Context difference from DOPAL chemistry, not a contradiction. Evidence access: Primary abstract Biochemical characterization of the catecholaldehyde reactivity of L-carnosine and its therapeutic potential in human myocardium. · 2019 · https://pubmed.ncbi.nlm.nih.gov/30191330/ · DOI 10.1007/s00726-018-2647-y
    Complete structured claim and evidence

  2. At pH 7.4, intact carnosine quenched HNE more effectively than histidine or N-acetylcarnosine, while beta-alanine was inactive.

    L-Carnosine / beta-alanyl-L-histidine → 4-Hydroxy-2-nonenal / HNE source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary abstract
    experimental_model
    Cell-free comparison.
    limitations
    This molecular comparison is not proof of supplement synergy.
    nutrient_topic
    Carnosine collection; isomer, preparation, species, exposure and manipulation remain explicit. · L-Carnosine / beta-alanyl-L-histidine
    plain_language
    The joined peptide has properties its separate parts do not reproduce.
    primary_references
    Carnosine is a quencher of 4-hydroxy-nonenal: through what mechanism of reaction? · 2002 · https://pubmed.ncbi.nlm.nih.gov/12419310/ · DOI 10.1016/s0006-291x(02)02545-7

    Carnosine: synthesis, transport, carbonyl chemistry and nutrient interactions (2026-09-19) · lines 244–250

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Cell-free comparison. · source_derived_draft · unverified_draft

    ## carnosine-hne-intact-peptide The joined peptide has properties its separate parts do not reproduce. At pH 7.4, intact carnosine quenched HNE more effectively than histidine or N-acetylcarnosine, while beta-alanine was inactive. Model: Cell-free comparison. Limitations: This molecular comparison is not proof of supplement synergy. Evidence access: Primary abstract Carnosine is a quencher of 4-hydroxy-nonenal: through what mechanism of reaction? · 2002 · https://pubmed.ncbi.nlm.nih.gov/12419310/ · DOI 10.1016/s0006-291x(02)02545-7
    Complete structured claim and evidence

Where it participates (unsigned role)

  1. Oral octyl-D-carnosine reduced aortic-valve lesions and lesion aldehyde-protein adducts in Apoe-null mice.

    Octyl-D-carnosine, synthetic derivative → Mouse Apoe-null aortic-valve lesions source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary abstract
    experimental_model
    Apoe-null mouse feeding experiment.
    limitations
    The administered compound was an analog, not ordinary L-carnosine; no human efficacy inferred.
    nutrient_topic
    Carnosine collection; isomer, preparation, species, exposure and manipulation remain explicit. · L-Carnosine / beta-alanyl-L-histidine
    plain_language
    A synthetic derivative showed an effect in a mouse disease model.
    primary_references
    Dietary carnosine prevents early atherosclerotic lesion formation in apolipoprotein E-null mice. · 2013 · https://pubmed.ncbi.nlm.nih.gov/23559625/ · DOI 10.1161/ATVBAHA.112.300572

    Carnosine: synthesis, transport, carbonyl chemistry and nutrient interactions (2026-09-19) · lines 332–338

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Apoe-null mouse feeding experiment. · source_derived_draft · unverified_draft

    ## carnosine-analog-atheroma A synthetic derivative showed an effect in a mouse disease model. Oral octyl-D-carnosine reduced aortic-valve lesions and lesion aldehyde-protein adducts in Apoe-null mice. Model: Apoe-null mouse feeding experiment. Limitations: The administered compound was an analog, not ordinary L-carnosine; no human efficacy inferred. Evidence access: Primary abstract Dietary carnosine prevents early atherosclerotic lesion formation in apolipoprotein E-null mice. · 2013 · https://pubmed.ncbi.nlm.nih.gov/23559625/ · DOI 10.1161/ATVBAHA.112.300572
    Complete structured claim and evidence

  2. Carnosine reacted with HNE to form a stabilized Michael adduct and an imine macrocycle in a pH-dependent equilibrium.

    L-Carnosine / beta-alanyl-L-histidine → Carnosine-HNE adducts source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary abstract
    experimental_model
    Buffered chemical reactions; adducts also detected in oxidized rat muscle homogenate.
    limitations
    Reaction chemistry does not measure clinical protection.
    nutrient_topic
    Carnosine collection; isomer, preparation, species, exposure and manipulation remain explicit. · L-Carnosine / beta-alanyl-L-histidine
    plain_language
    The peptide can chemically trap a lipid-derived aldehyde.
    primary_references
    Carnosine is a quencher of 4-hydroxy-nonenal: through what mechanism of reaction? · 2002 · https://pubmed.ncbi.nlm.nih.gov/12419310/ · DOI 10.1016/s0006-291x(02)02545-7

    Carnosine: synthesis, transport, carbonyl chemistry and nutrient interactions (2026-09-19) · lines 236–242

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Buffered chemical reactions; adducts also detected in oxidized rat muscle homogenate. · source_derived_draft · unverified_draft

    ## carnosine-hne-adduction The peptide can chemically trap a lipid-derived aldehyde. Carnosine reacted with HNE to form a stabilized Michael adduct and an imine macrocycle in a pH-dependent equilibrium. Model: Buffered chemical reactions; adducts also detected in oxidized rat muscle homogenate. Limitations: Reaction chemistry does not measure clinical protection. Evidence access: Primary abstract Carnosine is a quencher of 4-hydroxy-nonenal: through what mechanism of reaction? · 2002 · https://pubmed.ncbi.nlm.nih.gov/12419310/ · DOI 10.1016/s0006-291x(02)02545-7
    Complete structured claim and evidence

  3. Adding carnosine lowered free HNE formation during copper-driven LDL oxidation.

    L-Carnosine / beta-alanyl-L-histidine → Free HNE in copper-oxidized LDL source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary abstract
    experimental_model
    Cell-free LDL oxidation.
    limitations
    Cannot distinguish all contributions of trapping and oxidation suppression.
    nutrient_topic
    Carnosine collection; isomer, preparation, species, exposure and manipulation remain explicit. · L-Carnosine / beta-alanyl-L-histidine
    plain_language
    Aldehyde availability changed in an oxidizing lipid preparation.
    primary_references
    Dietary carnosine prevents early atherosclerotic lesion formation in apolipoprotein E-null mice. · 2013 · https://pubmed.ncbi.nlm.nih.gov/23559625/ · DOI 10.1161/ATVBAHA.112.300572

    Carnosine: synthesis, transport, carbonyl chemistry and nutrient interactions (2026-09-19) · lines 324–330

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Cell-free LDL oxidation. · source_derived_draft · unverified_draft

    ## carnosine-oxidized-ldl Aldehyde availability changed in an oxidizing lipid preparation. Adding carnosine lowered free HNE formation during copper-driven LDL oxidation. Model: Cell-free LDL oxidation. Limitations: Cannot distinguish all contributions of trapping and oxidation suppression. Evidence access: Primary abstract Dietary carnosine prevents early atherosclerotic lesion formation in apolipoprotein E-null mice. · 2013 · https://pubmed.ncbi.nlm.nih.gov/23559625/ · DOI 10.1161/ATVBAHA.112.300572
    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