Interleukin-12 in human milk

Area of Science:

• Immunology
• Human Lactation Research
• Neonatal Nutrition

Background:

• Interleukin-12 (IL-12) is a cytokine with critical roles in immune regulation.
• Human milk is a complex biological fluid containing various bioactive components essential for infant development.
• Understanding the immunological factors in human milk is crucial for infant health and development.

Purpose of the Study:

• To investigate the presence and concentration of Interleukin-12 (IL-12) in human milk.
• To analyze IL-12 levels across different stages of lactation (colostrum, transitional, and mature milk).
• To determine if IL-12 concentration changes postpartum.

Main Methods:

• Human milk samples (n=39) were collected from mothers.
• The enzyme-linked immunosorbent assay (ELISA) was employed to quantify IL-12.
• IL-12 concentrations were measured in pg/mL.

Main Results:

• Interleukin-12 (IL-12) was detected in 24 out of 39 human milk samples.
• Detected IL-12 levels ranged from >40 pg/mL, with a mean concentration of 1408 +/- 2256 pg/mL.
• A trend of decreasing mean IL-12 concentration was observed from colostrum to mature milk over time postpartum.

Conclusions:

• Interleukin-12 (IL-12) is present in human milk.
• IL-12 levels exhibit variability throughout lactation, suggesting dynamic changes postpartum.
• These findings contribute to the understanding of immunological components in human milk and their potential role in infant immunity.