Prenatal determinants of cord blood total immunoglobulin E levels in Mexican newborns
Identifieur interne : 004536 ( Main/Exploration ); précédent : 004535; suivant : 004537Prenatal determinants of cord blood total immunoglobulin E levels in Mexican newborns
Auteurs : Evelia Hernández ; Albino Barraza-Villarreal ; Maria Consuelo Escamilla-Nú Ez ; Leticia Hernández-Cadena ; Peter D. Sly [Australie] ; Lynnette Marie Neufeld ; Usha Ramakishnan [Géorgie (pays)] ; Isabelle Romieu [France]Source :
- Allergy and Asthma Proceedings [ 1088-5412 ] ; 2013.
Abstract
Asthma and allergic diseases have increased worldwide; however, etilogic factors for this increase are still poor. Prenatal consumptions of fatty acids are hypothesized, although few clinical trials in developing countries have been performed. This study was designed to identify predictors of immunoglobulin E (IgE) levels in cord blood of Mexican newborns. Total IgE was measured in umbilical cord blood from 613 infants whose mothers participated in a double-blind randomized controlled trial of 400 mg of docosahexaenoic acid or placebo from 18 to 22 weeks gestation through delivery. During pregnancy, information on sociodemographic characteristics, environmental exposures, and perceived maternal stress were obtained; a maternal blood sample was also collected to determine atopy
Url:
DOI: 10.2500/aap.2013.34.3688
PubMed: 23998234
PubMed Central: 3973815
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en"><p>Asthma and allergic diseases have increased worldwide; however, etilogic factors for this increase are still poor. Prenatal consumptions of fatty acids are hypothesized, although few clinical trials in developing countries have been performed. This study was designed to identify predictors of immunoglobulin E (IgE) levels in cord blood of Mexican newborns. Total IgE was measured in umbilical cord blood from 613 infants whose mothers participated in a double-blind randomized controlled trial of 400 mg of docosahexaenoic acid or placebo from 18 to 22 weeks gestation through delivery. During pregnancy, information on sociodemographic characteristics, environmental exposures, and perceived maternal stress were obtained; a maternal blood sample was also collected to determine atopy <italic>via</italic>
specific IgE levels. Logistic regression models were used to identify the main prenatal predictors of detectable total IgE levels in cord blood. IgE was detectable in cord blood from 344 (53.7%) infants; the main predictors in multivariate analyses were maternal atopy (odds ratio [OR] = 1.69; 95% CI, 1.19–2.42; p < 0.05) and pesticide use in the home (OR = 1.49; 95% CI, 1.04–2.14; p < 0.05). When stratified by maternal atopy, season of birth was a significant predictor in the atopic group only (OR = 2.48; 95% CI, 1.00–6.16; p < 0.05), and pesticide use was a significant predictor for infants born to nonatopic mothers (OR = 1.64; 95% CI, 1.07–2.51; p < 0.05). No differences were seen in the proportion of infants with detectable IgE by treatment group. Prenatal supplementation with omega-3 polyunsaturated fatty acid did not alter the detectable cord blood IgE levels. Maternal atopy and pesticide use during pregnancy are strong predictors of cord blood IgE levels in newborns. <italic>Clinical trial NCT00646360, <ext-link ext-link-type="uri" xlink:href="http://www.clinicaltrials.gov">www.clinicaltrials.gov</ext-link>
</italic>
.</p>
</div>
</front>
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<affiliations><list><country><li>Australie</li>
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<li>Géorgie (pays)</li>
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<region><li>Auvergne-Rhône-Alpes</li>
<li>Rhône-Alpes</li>
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<tree><noCountry><name sortKey="Barraza Villarreal, Albino" sort="Barraza Villarreal, Albino" uniqKey="Barraza Villarreal A" first="Albino" last="Barraza-Villarreal">Albino Barraza-Villarreal</name>
<name sortKey="Escamilla Nu Ez, Maria Consuelo" sort="Escamilla Nu Ez, Maria Consuelo" uniqKey="Escamilla Nu Ez M" first="Maria Consuelo" last="Escamilla-Nú Ez">Maria Consuelo Escamilla-Nú Ez</name>
<name sortKey="Hernandez Cadena, Leticia" sort="Hernandez Cadena, Leticia" uniqKey="Hernandez Cadena L" first="Leticia" last="Hernández-Cadena">Leticia Hernández-Cadena</name>
<name sortKey="Hernandez, Evelia" sort="Hernandez, Evelia" uniqKey="Hernandez E" first="Evelia" last="Hernández">Evelia Hernández</name>
<name sortKey="Neufeld, Lynnette Marie" sort="Neufeld, Lynnette Marie" uniqKey="Neufeld L" first="Lynnette Marie" last="Neufeld">Lynnette Marie Neufeld</name>
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<name sortKey="Sly, Peter D" sort="Sly, Peter D" uniqKey="Sly P" first="Peter D." last="Sly">Peter D. Sly</name>
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<country name="Géorgie (pays)"><noRegion><name sortKey="Ramakishnan, Usha" sort="Ramakishnan, Usha" uniqKey="Ramakishnan U" first="Usha" last="Ramakishnan">Usha Ramakishnan</name>
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<country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Romieu, Isabelle" sort="Romieu, Isabelle" uniqKey="Romieu I" first="Isabelle" last="Romieu">Isabelle Romieu</name>
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