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Related Experiment Videos

Early nutrition and immunity - progress and perspectives.

Philip C Calder1, Susanne Krauss-Etschmann, Esther C de Jong

  • 1Institute of Human Nutrition, School of Medicine, University of Southampton, Bassett Crescent East, Southampton SO16 7PX, UK. pcc@soton.ac.uk

The British Journal of Nutrition
|October 3, 2006
PubMed
Summary

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This summary is machine-generated.

Early life immune development, influenced by pregnancy and nutrition, is crucial for preventing allergies. Effective regulation of the neonatal immune system prevents allergic phenotypes and ensures lifelong immune competence.

Area of Science:

  • Immunology
  • Developmental Biology
  • Allergy Research

Background:

  • The immune system's role in host protection and self-tolerance is complex, with breakdowns leading to inflammatory diseases like atopic disorders.
  • The prevalence of inflammatory and atopic diseases has significantly increased globally over the past six decades.
  • Immune tolerance development is an active, lifelong process beginning prenatally, involving intricate maternal-fetal immunological exchanges.

Framework:

  • Pregnancy involves a shift towards T helper 2 (Th2) and regulatory T cell responses to ensure fetal tolerance.
  • Fetal T cells can respond to environmental and food antigens in utero, leading to detectable sensitization in newborns.
  • Failure to down-regulate the Th2 dominance in neonates can result in the development of an allergic phenotype.

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Implementation:

  • Postnatal events, including bacterial colonization and breast milk factors, are critical for immune system maturation.
  • Introduction of formula and solid foods exposes infants to new antigens and alters gut microbiota.
  • Early nutrition plays a role in modulating immune responses, tolerance development, and gut flora composition.

Implications:

  • Early life nutrition and immune experiences can impact long-term immune competence and the ability to develop tolerance.
  • Understanding these early developmental processes is key to preventing immune-related disorders.
  • Research highlights the influence of gut microbiota, nutrition, and immune cell development on allergic disease outcomes.