Induction of cellular and molecular immunomodulatory pathways by vitamin A and flavonoids.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing preclinical, in vitro, and clinical literature without systematic search methodology.
PubMed 26185959 · doi:10.1517/14712598.2015.1066331
What was done
The authors reviewed literature covering in vitro, in vivo preclinical, and clinical studies examining how vitamin A and selected flavonoids modulate intracellular transduction pathways, cellular differentiation, and innate and adaptive B- and T-cell responses (including TH1, TH2, and regulatory T cells).
What was found
The abstract reports no quantitative data or specific numerical outcomes. It reports that the immunomodulatory role of vitamin A is well-established in preclinical research and gaining clinical acceptance, whereas clinical trial outcomes for flavonoids remain controversial, likely due to diversity in compound classes, purity, and dosing regimens.
Why it matters
Understanding the cellular pathways influenced by vitamin A and flavonoids helps inform the conceptual development of novel therapeutics and vaccine strategies for infectious diseases, autoimmune conditions, and cancers.
Limits
This is a narrative review with no systematic search criteria, quality appraisal, or quantitative synthesis reported. No sample sizes, specific compound names, doses, or effect magnitudes are provided in the abstract.
Cited by
- context Clinical studies show that dietary elimination protocols and specific flavonoids regulate B cells and regulatory T cells (Tregs).