Component
Guinea-pig muscle carnitine concentration
Tissue concentration, not a direct synthesis-rate assay.
1 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
Guinea pigs with tissue vitamin C around 12% saturation had significantly lower muscle carnitine than animals near 100% saturation, without the customary overt hypovitaminosis-C signs in this experiment.
Experimental context and source evidence
- availability_state
- nutrient_deficiency Imported condition classification; unverified.
- cross_nutrient
- Vitamin C chemistry in collagen, modified-lysine/carnitine metabolism or copper-dependent peptide/catecholamine processing.
- experimental_model
- Guinea pigs with graded dietary vitamin C supply
- exposure
- Dietary regimens produced tissue vitamin C approximately 12% versus 100% saturation; regimen duration/dose not verified in abstract.
- limitations
- No direct synthesis-rate measurement; suggested explanation for human fatigue was not tested.
- nutrient_topic
- Vitamin C research collection; topical membership is not evidence of a direct dietary effect. · Vitamin C
- organism
- Cavia porcellus
- plain_language
- Low vitamin C coincided with lower muscle carnitine before obvious scurvy signs in these animals.
- primary_references
- [carnitine1980] Dietary ascorbic acid and muscle carnitine (beta-OH-gamma-(trimethylamino) butyric acid) in guinea-pigs. (1980). https://pubmed.ncbi.nlm.nih.gov/7378344/ DOI: 10.1079/bjn19800102
- tissue_or_cell_type
- Skeletal muscle
- trigger_kind
- nutrient_deficiency Imported condition classification; unverified.
Vitamin C: mechanisms, deficiency and nutrient interactions (2026-09-17) · lines 728–739
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Guinea pigs with graded dietary vitamin C supply · source_derived_draft · unverified_draft
### vc-enzyme-low-c-muscle-carnitine Guinea pigs with tissue vitamin C around 12% saturation had significantly lower muscle carnitine than animals near 100% saturation, without the customary overt hypovitaminosis-C signs in this experiment. Condition category: nutrient_deficiency nutrient_topic: Vitamin C research collection; topical membership is not evidence of a direct dietary effect. plain_language: Low vitamin C coincided with lower muscle carnitine before obvious scurvy signs in these animals. organism: Cavia porcellus tissue_or_cell_type: Skeletal muscle experimental_model: Guinea pigs with graded dietary vitamin C supply limitations: No direct synthesis-rate measurement; suggested explanation for human fatigue was not tested. cross_nutrient: Vitamin C chemistry in collagen, modified-lysine/carnitine metabolism or copper-dependent peptide/catecholamine processing. exposure: Dietary regimens produced tissue vitamin C approximately 12% versus 100% saturation; regimen duration/dose not verified in abstract. [carnitine1980] Dietary ascorbic acid and muscle carnitine (beta-OH-gamma-(trimethylamino) butyric acid) in guinea-pigs. (1980). https://pubmed.ncbi.nlm.nih.gov/7378344/ DOI: 10.1079/bjn19800102
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.