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  • Title: Maternal fatty acid levels during pregnancy, childhood lung function and atopic diseases. The Generation R Study.
    Author: Rucci E, den Dekker HT, de Jongste JC, Steenweg-de-Graaff J, Gaillard R, Pasmans SG, Hofman A, Tiemeier H, Jaddoe VW, Duijts L.
    Journal: Clin Exp Allergy; 2016 Mar; 46(3):461-71. PubMed ID: 26285050.
    Abstract:
    BACKGROUND: Maternal fatty acid status during pregnancy might influence foetal immunological development and subsequently the risk of childhood atopic diseases. OBJECTIVE: To examine the associations of maternal fatty acid levels during pregnancy with airway resistance and inflammation, asthma and eczema, in school-age children. METHODS: This study among 4976 subjects was embedded in a population-based prospective cohort study. We measured maternal plasma glycerophospholipid fatty acid levels by gas chromatography during the second trimester of pregnancy (mean gestational age: 20.7 (± 1.1) weeks). At the age of 6 years, airway resistance and inflammation were measured by interrupter technique (Rint) and fractional exhaled nitric oxide (FeNO), and current physician-diagnosed asthma and eczema were assessed by ISAAC-based questionnaires. Multiple linear and logistic regression models were adjusted for socio-demographic, lifestyle and anthropometric factors. RESULTS: We did not observe consistent associations of maternal total polyunsaturated fatty acid (PUFA), total n-6 PUFA, total n-3 PUFA levels and n-6/n-3 PUFA ratio during pregnancy with child's Rint and FeNO. Higher maternal total PUFA and total n-6 PUFA levels were associated with a decreased risk of childhood asthma (odds ratios (95% confidence interval): 0.76 (0.60, 0.97) and 0.71 (0.52, 0.96) per standard deviation score (SDS) increase of total PUFA and total n-6 PUFA levels, respectively) and with an increased risk of childhood eczema (1.16 (1.05, 1.28) and 1.21 (1.07, 1.37)). The observed associations were partly explained by Linoleic acid (LA, C18:2n-6) levels. Maternal total n-3 PUFA levels and n-6/n-3 PUFA ratio were not associated with current asthma and eczema. The observed associations were not explained by child's PUFA intake. CONCLUSIONS AND CLINICAL RELEVANCE: Higher maternal total PUFA and total n-6 PUFA levels during pregnancy seem to influence the risk of atopic diseases in childhood. The underlying mechanisms need to be further explored.
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