[Quantitative changes of CD3+, CD4+, CD8+, HLA-DR+, T lymphocytes and CD25+ cells in eutrophic full-term neonates with staphylococcal septicemia].
OBJECTIVE
Influence of staphylococcal septicemia on changes of share and changes of amount of CD3+ lymphocytes and their subpopulation as well as CD25+ cells in eutrophic full-term neonates.


METHODS
In 52 full-term neonates, with birthweight ranged from 2900 to 4500 g, including 30 infants with staphylococcal septicemia caused by Staphylococcus epidermidis (19 cases), S. sciuri (2 cases) S. varneri, S. hominis, S. haemolyticus and S. aureus (6 cases) and 22 healthy neonates (control group) the subpopulation of CD3+, CD4+, CD8+, HLA-DR+ lymphocytes in venous blood was estimated using flow cytometer FACScan with monoclonal antibodies of Becton Dickinson.


RESULTS
Average percentage of CD3+ (69.2 +/- 5.9%), CD4+ (48.9 +/- 10.7%) and HLA-DR+ (1.8 +/- 0.9%) lymphocytes and average CD4+/CD8+ ratio (2.97 +/- 1.33) in neonates with septicemia did not significantly differ from average values of these parameters in healthy neonates that were: CD3+ (69.1 +/- 9.0%), CD4+ (47.4 +/- 10.6%), HLA-DR+ (1.5 +/- 0.5%) and CD4+/CD8+ (2.29 +/- 1.29). Likewise the average numbers of these lymphocytes were close to the values found in the control group. Whereas the average subpopulation of CD8+ (19.2 +/- 4.6%) lymphocytes in ill neonates was significantly lower (p = 0.007) than in healthy ones (23.6 +/- 6.6%), and the average number of CD25+ cells was essentially (p = 0.01) higher in septicemia neonates (8.5 +/- 2.5) compared to the control group (6.6 +/- 1.3%). Average numbers of these cells in ill neonates did not substantially differ from their average values in control group.


CONCLUSIONS
1. Staphylococcal septicemia significantly decreases the values of subpopulation of CD8+ lymphocytes and increases the number of CD25+ cells in eutrophic full-term neonates. 2. Estimation of lymphocytes, and their subpopulation and CD25+ cells in neonates with staphylococcal septicemia may be useful in assessment of immunological changes in severe infections.
Behrendt
Jakub
J
Klinika Intensywnej Terapii i Patologii Noworodka II Katedry Pediatrii Slaskiej Akademii Medycznej w Zabrzu.
Karpe
Jacek
J
Mazur
Bogdan
B
Stojewska
Małgorzata
M
Sadownik
Beata
B
Wasek
Anna
A
Godula-Stuglik
Urszula
U
D000653:Amniotic Fluid / Q000276:immunology* / Q000382:microbiology*; D015703:Antigens, CD / Q000276:immunology*; D017252:CD3 Complex / Q000276:immunology; D015704:CD4 Antigens / Q000276:immunology; D016827:CD8 Antigens / Q000276:immunology; D005260:Female; D006684:HLA-DR Antigens / Q000276:immunology*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D015375:Receptors, Interleukin-2 / Q000276:immunology; D018805:Sepsis / Q000276:immunology* / Q000382:microbiology*; D013203:Staphylococcal Infections / Q000276:immunology* / Q000382:microbiology*; D013601:T-Lymphocytes / Q000276:immunology
D015703:Antigens, CD; D017252:CD3 Complex; D015704:CD4 Antigens; D016827:CD8 Antigens; D006684:HLA-DR Antigens; D015375:Receptors, Interleukin-2