Study on the Correlation Between Breast Milk Immune Factors and Neonatal Immune Development and the Prevention of...

This study investigates the longitudinal correlations between immune constituents of human breast milk and potential allergy protection in the neonatal immune system, focusing on immunoglobulins, cytokines, and microbial composition. It has been hypothesized that specific immune components in breast milk are associated with neonatal immune maturation and a reduced incidence of early allergic manifestations.

A prospective descriptive observational cohort study was conducted with 120 mother-neonate dyads. Breast milk and blood samples were collected at multiple time points within 6 months postpartum. Immunoglobulins (IgA), cytokines (TGF-β), lactoferrin, and microbial composition were quantified. Neonatal immune markers, including CD4+ and CD8+ T lymphocytes, were measured. Maternal factors such as age, dietary intake, and allergy history were analyzed for their impact on breast milk composition and neonatal immune development.

Immune factors in breast milk, including IgA, lactoferrin, and TGF-β, demonstrated a declining trend over time, while neonatal circulating CD4+ and CD8+ T lymphocytes increased, indicating immune system maturation. Maternal characteristics such as age, diet, and allergies were significantly associated with breast milk composition changes, influencing neonatal immune responses. Microbial diversity in breast milk also varied across time points, suggesting potential effects on immune tolerance development.

The study highlights the crucial role of breast milk in shaping neonatal immune tolerance and reducing allergy risk during infancy. Maternal health, nutrition, and allergic conditions significantly influence breast milk composition, thereby impacting neonatal immune development. These findings emphasize the importance of maternal well-being and breastfeeding in promoting infant immune health.