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Related Experiment Videos

Selenium and viral virulence.

O A Levander1, M A Beck

  • 1Nutrient Requirements and Functions Laboratory, Beltsville Human Nutrition Research Center, US Department of Agriculture, Maryland 20705-2350, USA.

British Medical Bulletin
|April 4, 2000
PubMed
Summary
This summary is machine-generated.

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Selenium deficiency enhances coxsackievirus virulence and alters viral genetics. This study reveals host nutrition

Area of Science:

  • * Virology
  • * Immunology
  • * Nutritional Science

Background:

  • * Coxsackievirus-induced myocarditis is a significant health concern.
  • * Previous research in China indicated a link between selenium deficiency and increased heart damage in coxsackievirus-infected mice.
  • * Keshan disease, a selenium-deficiency disorder, is associated with severe myocarditis.

Purpose of the Study:

  • * To investigate the role of nutritional factors, specifically selenium, in determining viral virulence.
  • * To explore whether selenium deficiency can influence the genetic makeup of coxsackievirus.

Main Methods:

  • * Utilized a mouse model of coxsackievirus-induced myocarditis.
  • * Administered diets with varying selenium content to mice.

Related Experiment Videos

  • * Infected mice with different strains of coxsackievirus B3 (CVB3).
  • * Analyzed viral genomes for genetic changes.

    • Main Results:

    • * Selenium deficiency significantly increased the virulence of a coxsackievirus B3 strain (CVB3/20).
    • * Selenium deficiency enabled the conversion of a non-virulent CVB3 strain (CVB3/0) into a virulent one.
    • * Genetic analysis revealed that the converted CVB3/0 strain's genome mutated to resemble the virulent CVB3/20 strain.

    Conclusions:

    • * Host nutrition, specifically selenium levels, can directly influence viral virulence.
    • * This study presents the first evidence of host nutrition altering the genetic composition of an invading virus.
    • * Understanding this host-nutrition-pathogen interaction is crucial for comprehending diet-infection relationships and developing effective interventions.