Maternal Consumption of Peanut During Pregnancy is Associated with Peanut Sensitization in Atopic Infants

Overview

Journal J Allergy Clin Immunol

Specialty Allergy & Immunology

Date 2010 Nov 2

PMID 21035177

Citations 49

Authors

Scott H Sicherer

Robert A Wood

Donald Stablein

Robert Lindblad

A Wesley Burks

Andrew H Liu

Stacie M Jones

David M Fleischer

Donald Y M Leung

Hugh A Sampson

Affiliations

Soon will be listed here.

Abstract

Background: Peanut allergy is typically severe, lifelong, and prevalent.

Objective: To identify factors associated with peanut sensitization.

Methods: We evaluated 503 infants 3 to 15 months of age (mean, 9.4 months) with likely milk or egg allergy but no previous diagnosis of peanut allergy. A total of 308 had experienced an immediate allergic reaction to cow's milk and/or egg, and 204 had moderate to severe atopic dermatitis and a positive allergy test to milk and/or egg. A peanut IgE level ≥5 kU(A)/L was considered likely indicative of peanut allergy.

Results: A total of 140 (27.8%) infants had peanut IgE levels ≥5 kU(A)/L. Multivariate analysis including clinical, laboratory, and demographic variables showed frequent peanut consumption during pregnancy (odds ratio, 2.9; 95% CI, 1.7-4.9; P < .001), IgE levels to milk (P = .001) and egg (P < .001), male sex (P = .02), and nonwhite race (P = .02) to be the primary factors associated with peanut IgE ≥5 kUA/L. Frequency of peanut consumption during pregnancy and breast-feeding showed a dose-response association with peanut IgE ≥5 kU(A)/L, but only consumption during pregnancy was a significant predictor. Among 71 infants never breast-fed, frequent consumption of peanut during pregnancy was strongly associated with peanut IgE ≥5 kU(A)/L (odds ratio, 4.99, 95% CI, 1.69-14.74; P < .004).

Conclusion: In this cohort of infants with likely milk or egg allergy, maternal ingestion of peanut during pregnancy was strongly associated with a high level of peanut sensitization.

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