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N-3 polyunsaturated fatty acids and atopy in Korean preschoolers

Inkyung Hwang1, Aeri Cha, Hyosun Lee

  • 1Department of Preventive and Occupational Medicine, College of Medicine, Pusan National University, Pusan, South Korea.

Lipids
|April 5, 2007
PubMed

Insights

Korean preschoolers with atopy had lower levels of omega-3 polyunsaturated fatty acids (PUFA) in their red blood cells. This suggests a potential link between reduced n-3 PUFA and childhood atopy.

Area of Science:

  • Pediatrics
  • Nutritional Science
  • Immunology

Background:

  • Atopy is an increasing health concern in Korean children.
  • Omega-3 polyunsaturated fatty acids (PUFA), particularly eicosapentaenoic acid, are precursors to less inflammatory eicosanoids.
  • n-3 PUFA may offer a protective effect against atopic conditions.

Purpose of the Study:

  • To investigate the association between red blood cell (RBC) n-3 PUFA levels and atopy in Korean preschoolers.
  • To compare the fatty acid composition of RBCs in atopic versus non-atopic children.

Main Methods:

  • Enrolled 308 Korean children aged 4-6 years.
  • Measured total RBC fatty acid composition using gas chromatography.
  • Assessed the prevalence of atopic dermatitis, allergic rhinitis, or asthma.

Main Results:

  • Children with atopy showed significantly lower total RBC n-3 PUFA (9.8% vs. 11.4%).
  • Atopic children had higher n-6 PUFA (33.0% vs. 32.2%) and a greater n-6/n-3 PUFA ratio (3.4 vs. 2.8).
  • Lower omega-3 index (EPA + DHA) and higher saturated fatty acids were also observed in atopic children.

Conclusions:

  • Reduced n-3 PUFA content in the RBC membrane may be implicated in the development of childhood atopy.
  • Maternal history of atopy is a significant risk factor, while lactation is not.
  • Further research into n-3 PUFA supplementation for preventing childhood atopy is warranted.

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