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Related Experiment Videos

Phagocytosis-promoting factor in human colostrum

R Straussberg1, L Sirota, J Hart

  • 1Department of Pediatrics, Hasharon Hospital, Golda Medical Center, Petah Tiqva, Israel.

Biology of the Neonate
|January 1, 1995
PubMed
Summary

Human colostrum enhances immune cell activity. Preterm colostrum contains a more potent phagocytosis-promoting factor, significantly boosting immune cell numbers and function compared to term colostrum.

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Area of Science:

  • Immunology
  • Neonatal Research
  • Cell Biology

Background:

  • Colostrum, the first milk produced by mothers, is rich in immune factors crucial for newborn protection.
  • Polymorphonuclear cells (PMNs) are key immune cells involved in phagocytosis, the process of engulfing foreign particles.
  • Differences in colostrum composition between preterm and full-term births may impact infant immune development.

Purpose of the Study:

  • To investigate the effect of colostrum from mothers of preterm and full-term newborns on the phagocytic activity of peripheral blood polymorphonuclear cells.
  • To compare the potency of phagocytosis-promoting factors in preterm versus term colostrum.

Main Methods:

  • Human colostrum samples from mothers of preterm and full-term infants were collected.

Related Experiment Videos

  • Peripheral blood polymorphonuclear cells (PMNs) were isolated from healthy donors.
  • The phagocytic activity of PMNs for latex particles was measured in the presence of different colostrum samples.
  • Statistical analysis was performed to determine the significance of observed differences.

    • Main Results:

    • Human colostrum contains factors that promote phagocytosis by PMNs, increasing both the number of phagocytic cells and individual cell activity.
    • Preterm colostrum exhibited significantly higher phagocytosis-promoting activity compared to term colostrum.
    • Term colostrum increased phagocytic cell numbers by 95% and individual cell capacity by 51% compared to controls.
    • Preterm colostrum enhanced phagocytic cell numbers by 300% and individual cell capacity by 137% compared to controls.

    Conclusions:

    • Human colostrum possesses potent immune-modulating properties, enhancing phagocytic cell function.
    • Colostrum from mothers of preterm infants is significantly more effective in promoting phagocytosis than colostrum from mothers of full-term infants.
    • These findings highlight the potential importance of preterm colostrum in supporting the immune defense of preterm neonates.