Association between preterm birth and maternal allergy considering IgE level.

Area of Science:

• Reproductive Health
• Immunology
• Perinatal Medicine

Background:

• Maternal allergies are common and may influence pregnancy outcomes.
• Immunoglobulin E (IgE) levels are key indicators of allergic responses.
• Understanding the interplay between allergies, IgE, and preterm birth is crucial for perinatal care.

Purpose of the Study:

• To investigate the association between maternal allergic diseases and preterm birth.
• To explore how different total immunoglobulin E (IgE) levels modify this association.
• To analyze risks for threatened abortion, preterm labor, and specific preterm birth categories.

Main Methods:

• Utilized data from 81,791 pregnant women in the Japan Environment and Children's Study.
• Collected data on maternal allergic diseases (asthma, atopic dermatitis, allergic rhinitis) via questionnaires.
• Analyzed obstetrical outcomes and total serum IgE levels using logistic regression and subgroup analyses by IgE level.

Main Results:

• Maternal asthma and allergic rhinitis correlated with increased risks of threatened abortion and preterm labor.
• High total IgE levels were associated with a decreased risk of preterm labor.
• Allergic rhinitis with high IgE showed a significant decrease in early preterm birth risk (aOR 0.60).

Conclusions:

• The impact of maternal allergies on preterm birth risk is modulated by total immunoglobulin E (IgE) levels.
• Specific allergic conditions, like allergic rhinitis, may have differential effects on preterm birth depending on IgE levels.