Component
Xanthurenate
Xanthurenate Independently recorded entity or measured process. Linked claims specify compartment, assay and experimental scope.
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.
Where it participates (unsigned role)
Both B6-free rat diet groups showed substantially increased urinary xanthurenate relative to B6-containing groups.
Experimental context and source evidence
- availability_state
- nutrient_deficiency Imported condition classification; unverified.
- cross_nutrient
- B6 and tryptophan metabolism.
- experimental_model
- Young male Wistar rats; four controlled diets for 19 days
- exposure
- 19-day controlled diets
- limitations
- The marker does not independently measure intracellular NAD.
- nutrient_topic
- Vitamin B6 research collection; topical membership is not evidence of a direct dietary effect. · Vitamin B6
- organism
- Rattus norvegicus
- plain_language
- B6 withdrawal diverted this urinary tryptophan-metabolism readout.
- primary_references
- [b6-niacin-1995] Effects of Vitamin B6 Deficiency on the Conversion Ratio of Tryptophan to Niacin (1995). https://doi.org/10.1271/bbb.59.2060 DOI: 10.1271/bbb.59.2060
- tissue_or_cell_type
- Urine
- trigger_kind
- nutrient_deficiency Imported condition classification; unverified.
Vitamin B6: mechanisms, deficiency and nutrient interactions (2026-09-17) · lines 911–922
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Young male Wistar rats; four controlled diets for 19 days · source_derived_draft · unverified_draft
### b6-met-rat-xanthurenate Both B6-free rat diet groups showed substantially increased urinary xanthurenate relative to B6-containing groups. Condition category: nutrient_deficiency nutrient_topic: Vitamin B6 research collection; topical membership is not evidence of a direct dietary effect. plain_language: B6 withdrawal diverted this urinary tryptophan-metabolism readout. organism: Rattus norvegicus tissue_or_cell_type: Urine experimental_model: Young male Wistar rats; four controlled diets for 19 days limitations: The marker does not independently measure intracellular NAD. cross_nutrient: B6 and tryptophan metabolism. exposure: 19-day controlled diets [b6-niacin-1995] Effects of Vitamin B6 Deficiency on the Conversion Ratio of Tryptophan to Niacin (1995). https://doi.org/10.1271/bbb.59.2060 DOI: 10.1271/bbb.59.2060
Complete structured claim and evidencePyridoxine reduced the erythrocyte AST activation coefficient and improved post-tryptophan-load urinary xanthurenate response.
Experimental context and source evidence
- availability_state
- biomarker_context Imported condition classification; unverified.
- experimental_model
- Double-blind randomized placebo-controlled RA trial: 36 recruited, 33 baseline completers, 28 low-PLP patients eligible for supplementation.
- exposure
- Pyridoxine hydrochloride 50 mg/day or placebo for 30 days; historical trial exposure, not a regimen recommendation.
- limitations
- Challenge tests and erythrocyte saturation do not identify every tissue defect.
- nutrient_topic
- Vitamin B6 research collection; topical membership is not evidence of a direct dietary effect. · Vitamin B6
- organism
- Homo sapiens
- plain_language
- Two B6-related functional tests improved, alongside blood vitamin levels.
- primary_references
- [b6-chiang2005-trial] Pyridoxine supplementation corrects vitamin B6 deficiency but does not improve inflammation in patients with rheumatoid arthritis (2005). https://pubmed.ncbi.nlm.nih.gov/16277693/ DOI: 10.1186/ar1839
- tissue_or_cell_type
- Human blood and whole-body measurements
- trigger_kind
- biomarker_context Imported condition classification; unverified.
Vitamin B6: mechanisms, deficiency and nutrient interactions (2026-09-17) · lines 1473–1483
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Double-blind randomized placebo-controlled RA trial: 36 recruited, 33 baseline completers, 28 low-PLP patients eligible for supplementation. · source_derived_draft · unverified_draft
### b6-ra-functional-tests Pyridoxine reduced the erythrocyte AST activation coefficient and improved post-tryptophan-load urinary xanthurenate response. Condition category: biomarker_context nutrient_topic: Vitamin B6 research collection; topical membership is not evidence of a direct dietary effect. plain_language: Two B6-related functional tests improved, alongside blood vitamin levels. organism: Homo sapiens tissue_or_cell_type: Human blood and whole-body measurements experimental_model: Double-blind randomized placebo-controlled RA trial: 36 recruited, 33 baseline completers, 28 low-PLP patients eligible for supplementation. limitations: Challenge tests and erythrocyte saturation do not identify every tissue defect. exposure: Pyridoxine hydrochloride 50 mg/day or placebo for 30 days; historical trial exposure, not a regimen recommendation. [b6-chiang2005-trial] Pyridoxine supplementation corrects vitamin B6 deficiency but does not improve inflammation in patients with rheumatoid arthritis (2005). https://pubmed.ncbi.nlm.nih.gov/16277693/ DOI: 10.1186/ar1839
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.