LAUSR

Abstract The primary objective in modern obstetrics and prenatal diagnosis is to predict risks of congenital abnormalities. The aim of the research was to assess the correlation between selected oxidative stress biomarkers with the risk of foetal chromosomal aberration evaluated at the first trimester screening. A series of studies show that balanced free radical activity and oxidative homeostasis are essential for proper bodily growth and function. Reactive oxygen species (ROS) may be one of the factors associated with disruption of cell cycle and tissue development, thus leading to developmental abnormalities. That's why it's so important to examine connection between level of oxidative stress and congenital abnormalities. Using ultrasonography examinations between 11–13+6d gestational weeks combined with serum levels of pregnancy associated plasma protein A and human chorionic gonadotropin and spectrophotometric analysis of oxidative stress markers such as glutathione (GSH), S‐transferase, S‐nitrosothiols (RSNO), trolox equivalent antioxidant capacity (TEAC), protein and nitrites we tried to find correlation between birth defects and oxidative stress status. In conclusion, our analysis suggests that elevated maternal serum levels of protein, S‐transferase and TEAC as well as decreased maternal serum levels of GSH and protein correlated with the risk of chromosomal aberrations and congenital developmental defects in a foetus. Graphical abstract Figure. No Caption available. HighlightsValuable early prenatal diagnosis of congenital malformations is necessary nowadays.The importance of discovering new opportunities for non‐invasive prenatal screening.Prenatal test were performed on 76 pregnant women.Patients were divided into groups with high and low risks of chromosomal aberrations.Measurement of oxidative stress using liquid chromatography‐tandem mass spectrometry.Levels of elected oxidative stress markers could be significant for foetal diagnosis.