Abstract
The present study was conducted to learn whether the perinatal and environmental factors could influence the total and antigen-specific IgE levels in umbilical cord blood. Retrospective data were obtained from 173 mother-infant pairs. Total and specific (for children's food, wheat/grass and house dust mite-HDM) cord blood IgE levels were determined using the immunoassay test. The total cord blood IgE was between 0.0-23.08 IU/ml (mean 0.55 ± 2.07 IU/ml; median 0.16 IU/ml). Total IgE levels were significantly higher in boys compared with girls (OR = 2.2; P = 0.007), and in newborns with complicated pregnancy (OR = 2.7; P = 0.003). A greater number of siblings correlated with increases in the total cord blood IgE (P < 0.02). We detected specific IgE in 34 newborns (40 positive tests). A long-standing contact with a cat during pregnancy decreased the specific IgE level for wheat/grass (OR = 3.2; P < 0.07) and for children's food (OR = 5.0; P < 0.04), and the contact with a dog decreased the specific-IgE for wheat/grass (OR = 0.3; P < 0.05). Exposure to tobacco smoke correlated with the positive specific IgE toward house dust mite (OR = 4.7; P = 0.005).
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