Component
Human insulin-like growth factor I / IGF1
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 it acts on
IGF-I stimulated thymulin production in TEC preparations.
Experimental context and source evidence
- evidence_access
- Primary bibliographic record and abstract checked; full methods/figures not comprehensively reviewed.
- experimental_contrast
- {"intervention": "igf1 exposure", "comparator": "Matched experimental control", "endpoint": "IGF-I stimulated thymulin production in TEC preparations.", "effect_direction": "increase", "combination": "single", "conditions": []} Explicit extracted experimental comparison; source-derived draft.
- experimental_model
- Preparations and species as specified in statement and source; no direct iodine/selenium cofactor requirement inferred.
- interpretation_status
- Source-derived extraction of a fact-checked reference; access is explicit, not independent raw-data verification.
- limitations
- Interpret only within the recorded preparation, exposure and comparator. The complete source passage retains qualifications; unspecified doses/timing have not been extracted here. No clinical efficacy, nutrient deficiency or unique molecular mediation is inferred.
- plain_language
- IGF-I stimulated thymulin production in TEC preparations.
- primary_references
- Growth hormone and insulin-like growth factor-I stimulate hormonal function and proliferation of thymic epithelial cells. | 1992 | DOI 10.1210/jcem.75.1.1619008 | PMID 1619008 | https://pubmed.ncbi.nlm.nih.gov/1619008/
- source_locator
- Reviewed reference lines 93-93; exact primary location described in quoted passage where extracted.
Thymulin: detailed mechanisms of action (reviewed 3 October 2026) · lines 93–93
Original AI-assisted review of primary studies and, where relevant, official regulatory records. Access level is retained per claim. Corrections, null results and unresolved questions remain explicit. Not publisher full text or independent replication. · supports · Preparations and species as specified in statement and source; no direct iodine/selenium cofactor requirement inferred. · Recorded from source · Recorded from source
| GH and IGF-I | Both stimulated production in TEC preparations. Blocking IGF-I or its receptor inhibited the GH response, supporting a local IGF-mediated component. The associated human endocrine observations do not isolate that mechanism in vivo. [1992 study](https://pubmed.ncbi.nlm.nih.gov/1619008/) |
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.