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Related Experiment Videos

Nutritional modulation of immune function.

R F Grimble1

  • 1Institute of Human Nutrition, School of Medicine, University of Southampton, UK. rfg1@soton.ac.uk

The Proceedings of the Nutrition Society
|October 30, 2001
PubMed
Summary

Immunonutrition, using nutrients like n-3 PUFA and glutamine, can improve recovery from injury and infection by modulating inflammation. Patient genetics and antioxidant status significantly impact its effectiveness, requiring personalized approaches for optimal clinical outcomes.

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Area of Science:

  • Clinical Nutrition
  • Immunology
  • Genetics

Background:

  • Inflammatory response to injury/infection can cause tissue depletion and immunosuppression, delaying recovery.
  • Single-nucleotide polymorphisms (SNPs) in cytokine genes may negatively affect immune response.
  • Immunonutrition aims to modulate inflammation and improve clinical outcomes.

Purpose of the Study:

  • To discuss challenges in demonstrating immunonutrition's clinical efficacy.
  • To explore the role of patient antioxidant status and genetic background.
  • To highlight the potential of personalized immunonutrition strategies.

Main Methods:

  • Review of existing literature on immunonutrition components (n-3 PUFA, glutamine, arginine, etc.).
  • Analysis of meta-analyses on immunonutrition's impact on hospital stay, ventilation, and infection rates.

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  • Discussion of the interplay between inflammation, T-cell function, antioxidant status, and genetic factors.

    • Main Results:

    • Immunonutrition may reduce hospital stay, ventilation needs, and infection rates, but not mortality.
    • n-3 PUFA, glutamine, and N-acetyl cysteine show immuno-enhancive effects, partly via anti-inflammatory and antioxidant mechanisms.
    • Patient genetic background and antioxidant status are critical factors influencing immunonutrition efficacy.

    Conclusions:

    • Difficulties in demonstrating immunonutrition efficacy stem from patient variability in genetics and antioxidant status.
    • Personalized immunonutrition, considering individual genotypes, promises improved precision and clinical outcomes.
    • Further research is needed to elucidate genotype-specific responses to immunonutrients.