Indicative Markers of Cell Proliferation and Apoptosis During the Perinatal Period

ABSTRACT

Tissue polypeptide-specific antigen (TPS), an indicative marker of cell proliferation and soluble Fas (sFas), an antiapoptotic molecule were determined in neonatal serum (day 1-N1 and day 4-N4 of life), compared with maternal serum (MS) and umbilical cord serum (UC) to study changes of these markers during the perinatal period. Serum TPS and sFas concentrations were measured in 33 healthy, termed neonates, their mothers and 25 healthy nonpregnant controls (CS), age-matched to the mothers. TPS serum concentrations were significantly elevated in N1 and N4 as compared to CS (p < 0.0001 and p < 0.0003), increasing significantly from UC to N1 (p < 0.0001) and decreasing thereafter in N4 (p < 0.0002). MS serum concentrations, being significantly higher than CS (p < 0.0001), UC (p < 0.0001) and N4 (p < 0.003), but lower than N1 (p < 0.02) were strongly depended on the mode of delivery (p < 0.001). Serum concentrations of sFas, being lower in UC than in MS or CS (p < 0.0001), increased significantly in N4 samples (p < 0.01). A strong correlation was found between sFas serum concentrations in N1 and N4 (r = 0.65; p < 0.001). Our results demonstrate significant perinatal changes in TPS and sFas serum concentrations, possibly indicating gradual decrease of proliferation and apoptosis in early postnatal life.

KEYWORDS

Mode of delivery - sFas TPS - umbilical cord

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