Lymphocyte Subpopulation Number and Function in Infancy
Author Information
Author(s): DEBRA A. STERN, MARY JANE HICKS, FERNANDO D. MARTINEZ, CATHARINE J. HOLBERG, ANNE L. WRIGHT, JACOB PINNAS, MARILYN HALONEN, LYNN M. TAUSSIG
Primary Institution: University of Arizona Health Sciences Center
Hypothesis
Normal values for percentages of lymphocyte subpopulations and functional responses to mitogen stimulation in infancy are not well established.
Conclusion
The study established normal values for lymphocyte subpopulations and their functions in infants, which will aid in evaluating immune system maturation.
Supporting Evidence
- Significant increases in total T cells, T-cell subsets, and B cells were observed from birth to later infancy.
- The CD4/CD8 ratio and functional responses to certain mitogens significantly decreased from birth to later infancy.
- No significant ethnic or gender-related differences were found in the study.
Takeaway
This study looked at blood from babies to see how their immune cells change as they grow, helping doctors understand if babies are healthy.
Methodology
Lymphocyte subpopulations were examined in umbilical cord blood and peripheral blood samples from infants at different ages.
Limitations
The study did not investigate ethnic or gender-related differences in detail.
Participant Demographics
Infants born between 1981 and 1984 in Tucson, Arizona, with a mix of ethnic backgrounds.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
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