Component

Viral genomic variation

Selection or emergence of genomic variants in experimental viral-passage studies.

2 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. Variants arising in the deficient-host passage model showed increased virulence that could persist after transfer to nutritionally adequate mice.

    Viral genomic variation → Viral virulence source_derived_draftsource_reported: Animal model; the supplied source reports experimental viral sequencing and passage results.
    Experimental context and source evidence
    availability_state
    Experimental Coxsackievirus passage through selenium-deficient mice.
    experimental_scope
    Animal passage experiments; related influenza findings are reported, and vitamin E deficiency produced a similar Coxsackievirus effect.
    limitations
    The molecular route to individual mutations is unresolved. Selenium is not unique in this respect, and generalization to human infections remains uncertain.
    trigger_kind
    nutrient_deficiency

    Selenium deficiency: a mechanism-first reference · lines 400–410

    Supplied selenium deficiency reference · supports · Supplied reference; verify the primary study and experimental context. · source_derived_draft · unverified_draft

    selenium deficiency or vitamin E deficiency in experimental mice ↓ changed host oxidative / immune environment ↓ selection or emergence of viral genomic variants ↓ increased virulence can persist after transfer to nutritionally adequate mice Demonstrated in animal models: [10] Coxsackievirus B3: a normally avirulent strain acquired reproducible genomic changes and increased virulence after passage through selenium-deficient mice.

    Selenium in immune cells · lines 275–275

    Selenium immune-cell mechanism draft · supports · Supplied reference; verify the primary study and experimental context. · source_derived_draft · unverified_draft

    Feed mice a selenium-deficient diet. Infect with **benign coxsackievirus B3 (CVB3/0)**. The virus becomes **virulent** — and sequencing shows **specific, heritable point mutations** in the viral genome that persist when the mutated virus is passaged into selenium-replete mice.
    Complete structured claim and evidence

What acts on it

  1. In selenium-deficient mice, experimental passage of Coxsackievirus B3 was associated with reproducible viral genomic changes.

    Selenium → Viral genomic variation source_derived_draftsource_reported: Animal model; the supplied source reports experimental viral sequencing and passage results.
    Experimental context and source evidence
    availability_state
    Experimental Coxsackievirus passage through selenium-deficient mice.
    experimental_scope
    Animal passage experiments; related influenza findings are reported, and vitamin E deficiency produced a similar Coxsackievirus effect.
    limitations
    The molecular route to individual mutations is unresolved. Selenium is not unique in this respect, and generalization to human infections remains uncertain.
    trigger_kind
    nutrient_deficiency

    Selenium deficiency: a mechanism-first reference · lines 398–412

    Supplied selenium deficiency reference · supports · Supplied reference; verify the primary study and experimental context. · source_derived_draft · unverified_draft

    The best-established finding is narrower than the original “selenium uniquely mutates viruses” claim. selenium deficiency or vitamin E deficiency in experimental mice ↓ changed host oxidative / immune environment ↓ selection or emergence of viral genomic variants ↓ increased virulence can persist after transfer to nutritionally adequate mice Demonstrated in animal models: [10] Coxsackievirus B3: a normally avirulent strain acquired reproducible genomic changes and increased virulence after passage through selenium-deficient mice. Vitamin E deficiency produced a similar phenomenon in the same Coxsackievirus model. Selenium is therefore not unique among micronutrients in this respect.
    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