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Cytokines in human breast milk
J M Wallace1, S J Ferguson, P Loane
1School of Biomedical Sciences, University of Ulster at Coleraine, Londonderry, Northern Ireland, UK.
British Journal of Biomedical Science
|June 1, 1997
Summary
Human milk contains vital cytokines like granulocyte-colony stimulating factor (G-CSF) and interleukin-6 (IL-6). These molecules, found in variable amounts, may support infant development and immunity.
Area of Science:
- Human milk composition
- Neonatal immunology
- Biochemistry
Background:
- Human milk is a primary nutrient source for neonates.
- Milk contains bioactive molecules, including cytokines, crucial for infant development.
- Cytokines are key in cell communication and immune system regulation.
Purpose of the Study:
- To quantify granulocyte-colony stimulating factor (G-CSF) and interleukin-6 (IL-6) concentrations in human milk.
- To explore the presence and variability of these cytokines in milk samples from healthy nursing mothers.
Main Methods:
- Assay of 30 human milk samples for G-CSF concentrations.
- Assay of 28 human milk samples for IL-6 concentrations.
- Measurement of cytokine levels using established laboratory assays.
Main Results:
- G-CSF levels ranged from 14 pg/mL to over 2500 pg/mL.
- IL-6 was detected in 24 out of 28 samples, with levels from 0.81 pg/mL to 306 pg/mL.
- Some samples had IL-6 levels below the assay's detection limit.
Conclusions:
- Human milk contains variable concentrations of G-CSF and IL-6.
- These cytokines may contribute to neonatal growth, development, and protection against infection.
- Further research is warranted to elucidate the specific roles of these milk cytokines in infant health.