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Does allergy begin in utero?

Gabrielle A Lockett1, Johanna Huoman2, John W Holloway1,3,4

  • 1Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK.

Pediatric Allergy and Immunology : Official Publication of the European Society of Pediatric Allergy and Immunology
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PubMed
Summary
This summary is machine-generated.

Allergic disease susceptibility is influenced by genetics and in utero environmental exposures. These factors interact, impacting immune development and increasing allergy risk, highlighting the importance of prenatal factors.

Keywords:
allergyearly originenvironmentepigeneticsin utero effects

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Area of Science:

  • Immunology
  • Genetics
  • Developmental Biology
  • Environmental Health

Background:

  • Allergic diseases have a known familial component, suggesting genetic predisposition.
  • Emerging evidence indicates prenatal environmental exposures significantly contribute to allergic disease development.
  • These exposures can alter immune and organ development during critical in utero periods.

Purpose of the Study:

  • To review evidence supporting the hypothesis that allergic diseases originate in the prenatal period.
  • To explore mechanisms by which environmental exposures during pregnancy influence allergic disease risk.
  • To highlight the role of epigenetics in mediating these effects.

Main Methods:

  • Literature review of studies investigating genetic and environmental factors in allergic disease.
  • Analysis of research on in utero exposures (diet, nutrients, toxins) and their impact on epigenetics.
  • Examination of evidence linking prenatal factors to immune and organ development.

Main Results:

  • Genetic factors play a role in individual susceptibility to allergic diseases.
  • In utero environmental exposures, including diet and toxins, can modify the epigenome.
  • These epigenetic modifications interact with genetic risks, influencing fetal development and immune programming.

Conclusions:

  • Allergic disease development can be initiated during pregnancy.
  • Understanding prenatal environmental influences and epigenetic mechanisms is crucial for identifying at-risk individuals.
  • This knowledge is essential for developing strategies for the primary prevention of allergic diseases.