The endothelial cells of the blood-brain barrier adhere closely, which is provided by tight junctions (TJs). The aim of the study was to assess the damage to the endothelial TJs in pregnancy, complicated by fetal growth restriction (FGR) and circulatory centralization (brain-sparing effect, BS). The serum concentrations of NR1 subunit of the N-methyl-D-aspartate receptor (NR1), nucleoside diphosphate kinase A (NME1), S100 calcium-binding protein B (S100B), occludin (OCLN), claudin-5 (CLN5), and zonula occludens protein – 1 (zo-1), and the placental expressions of OCLN, claudin-4 (CLN4), CLN5, and zo-1 were assessed with ELISA. The significantly higher serum NME1 concentrations and the serum CLN5/zo-1 index were observed in FGR pregnancy with BS, as compared to the FGR group without BS. The FGR newborns with BS were about 20 times more likely to develop an intraventricular hemorrhage (IVH) than the FGR infants without BS. The cerebroplacental ratio (CPR) allowed to predict the IVH in growth-restricted fetuses. The significantly lower placental CLN4 expression was observed in the FGR group with BS and who postnatally developed an IVH, as compared to the growth-restricted infants with BS without IVH signs. Pregnancy complicated by FGR and BS is associated with the destabilization of the fetal blood-brain barrier. The IVH in newborns is reflected in the inhibition of the placental CLN4 expression, which may be a useful marker in the prediction of an IVH among growth-restricted fetuses.

Objectives: The aim of the study was to characterize nutritional behavior in pregnancy. Material and methods: The survey study included 250 pregnant women. The survey concerned dietary behavior reffered to the type of diet, the number of meals per day, snacking between meals, consumption of meat, fish, dairy products, bread, fruits and vegetables. Results: 88.8% of the respondents were not on a special diet. The most of the women ate more than three times a day. The women usually ate fruits and vegetables, yogurt and sweets as snacks between meals. The majority of respondents consumed meat and sliced meats twice or once a day with the preference of poultry. Only 17.6% of them ate fish with the recommended frequency and as much as 21.2% chose not-recommended species. Almost 29.6% of patients consumed 3 to 4 servings of milk or milk products a day and 16.8% of them excluded milk. Half of the respondents declared eating wheat bread and 24% of them chose wheat roll during pregnancy. Despite the large number of women who consumed wheat baking, a considerable amount of women chose wholemeal bread and wholemeal rolls. Nutritional behaviors were correlated with on education level and weight gain during pregnancy. Conclusions: The frequency of meals was adequate for the most of pregnant women as well as recommended consumption of meat with poultry preference. However, the inappropriate nutrition was also observed in a low consumption of fish and dairy products, a high consumption of wheat breadstuff and sweets, as well as in a small intake of milk. Education level and weight gain during pregnancy were associated with nutritional behaviors. Objectives: The aim of the study was to characterize nutritional behavior in pregnancy. Material and methods: The survey study included 250 pregnant women. The survey concerned dietary behavior reffered to the type of diet, the number of meals per day, snacking between meals, consumption of meat, fish, dairy products, bread, fruits and vegetables. Results: 88.8% of the respondents were not on a special diet. The most of the women ate more than three times a day. The women usually ate fruits and vegetables, yogurt and sweets as snacks between meals. The majority of respondents consumed meat and sliced meats twice or once a day with the preference of poultry. Only 17.6% of them ate fish with the recommended frequency and as much as 21.2% chose not-recommended species. Almost 29.6% of patients consumed 3 to 4 servings of milk or milk products a day and 16.8% of them excluded milk. Half of the respondents declared eating wheat bread and 24% of them chose wheat roll during pregnancy. Despite the large number of women who consumed wheat baking, a considerable amount of women chose wholemeal bread and wholemeal rolls. Nutritional behaviors were correlated with on education level and weight gain during pregnancy. Conclusions: The frequency of meals was adequate for the most of pregnant women as well as recommended consumption of meat with poultry preference. However, the inappropriate nutrition was also observed in a low consumption of fish and dairy products, a high consumption of wheat breadstuff and sweets, as well as in a small intake of milk. Education level and weight gain during pregnancy were associated with nutritional behaviors.

This study evaluated the damage to the endothelial tight junctions (TJs) in pregnancies complicated by fetal growth restriction (FGR) and investigated whether FGR is related to blood–brain barrier disintegration and, subsequently, to the appearance of proteins indicative of neuronal injury in maternal blood. The studied group included 90 pregnant women diagnosed with FGR. The control group consisted of 70 women with an uncomplicated pregnancy. The biochemical measurements included serum neuronal proteins (subunit of the N-methyl-D-aspartate receptor—NR1, nucleoside diphosphate kinase A—NME1, and S100 calcium-binding protein B—S100B), serum TJ proteins (occludin—OCLN, claudin-5—CLN5, zonula occludens—zo-1, and OCLN/zo-1 and CLN5/zo-1 ratios), and placental expression of TJ proteins (OCLN, claudin-4 CLN4, CLN5, zo-1). The significantly higher serum S100B and CLN5 levels and serum CLN5/zo-1 ratio were observed in FGR compared to healthy pregnancies. Moreover, FGR was characterized by increased placental CLN5 expression. Both serum NME1 levels and placental CLN4 expression in FGR pregnancies were significantly related to the incidence of neurological disorders in newborns. Mothers of FGR neonates who developed neurological complications and intraventricular hemorrhage (IVH) had statistically higher NME1 concentrations during pregnancy and significantly lower placental CLN4 expression than mothers of FGR neonates without neurological abnormalities. The serum NME1 levels and placental CLN4 expression were predictive markers of IVH in the FGR group. The blood–brain barrier is destabilized in pregnancies complicated by FGR. Neurological disorders, including IVH, are associated with higher serum concentrations of NME1 and the decreased placental expression of CLN4. The serum NME1 levels and placental CLN4 expression may serve as biomarkers, helpful in predicting IVH in FGR. It may allow for more precise monitoring and influence decision-making on the optimal delivery time to avoid developing neurological complications.

The aim of this study was to compare the iron and calcium status in singleton and twin pregnancies and to assess whether there is an increased risk for iron and calcium deficiency in twin gestation. The study included 105 singleton and 9 twin pregnancies at or above 35 weeks of gestation. Information on prenatal supplementation with iron or calcium was acquired, and adverse perinatal outcomes were recorded. Biosamples from all 114 mothers and 73 newborns (61 singleton and 12 twin newborns) were finally analyzed. Total iron and calcium concentrations in serum were measured through total reflection X-ray fluorescence analysis. The results indicated no significant differences in maternal serum iron and calcium concentrations between singleton and twin pregnancies. Similarly, iron and calcium concentrations in newborn umbilical cord serum samples were not different between singleton and twin pregnancies. The comparison of total iron and calcium between mothers and umbilical cord serum indicated significantly lower concentrations in the mothers, with the differences being not homogenous but rather pair-specific. A significant positive correlation between maternal serum and umbilical cord serum calcium concentration was noticed. Prenatal iron supplementation was associated with higher iron concentrations in both mothers and newborns, supporting the efficiency of supplementation and the quality of the study methods. Collectively, the data indicate no significant differences in serum iron and calcium concentrations with regard to singleton or twin pregnancies and the efficiency of iron supplementation during pregnancy for increasing iron status.

Objectives: The aim of the study was to evaluate the relationship between sociodemographic factors, perinatal data and physical activity in pregnancy, to determine the sources of information about physical health that pregnant women got from and preferred types of sport activities before and during gestation. Material and methods: The study included 247 pregnant women who fulfilled a questionnaire.
Results: 73.7% of respondents declared doing sport in pregnancy. The preferred types of pre-pregnancy activities were walking, riding a bicycle and swimming. It did not change during pregnancy, but more women declared swimming than cycling. In general, the females chose each type of activity less often in pregnancy than before, except pilates, of which that frequency did not change. The respondents declared that they ran, swam, did aerobics, roller skating and rode a bike significantly less often in pregnancy in comparison to the pregestational period. The sociodemographic factors that influence the physical activity were age, education and net income. The incidence of cesarean section was significantly higher among physically inactive women comparing to those who declared physical activity during pregnancy. Fifty-five point one percent of survey respondents declared barriers precluding sport activities. The most of women got the information about physical activity from the Internet, books or magazines and doctor in charge of the pregnancy. Conclusions: Pregnancy has an impact on the type of chosen physical activity. The sport activities are dependent on age, education and salary. The active women have 30% lower risk for cesarean section in comparison to inactive respondents. Finally, a great group of women gets the information about proper physical activities during pregnancy from unreliable sources.   Objectives: The aim of the study was to evaluate the relationship between sociodemographic factors, perinatal data and physical activity in pregnancy, to determine the sources of information about physical health that pregnant women got from and preferred types of sport activities before and during gestation. Material and methods: The study included 247 pregnant women who fulfilled a questionnaire.
Results: 73.7% of respondents declared doing sport in pregnancy. The preferred types of pre-pregnancy activities were walking, riding a bicycle and swimming. It did not change during pregnancy, but more women declared swimming than cycling. In general, the females chose each type of activity less often in pregnancy than before, except pilates, of which that frequency did not change. The respondents declared that they ran, swam, did aerobics, roller skating and rode a bike significantly less often in pregnancy in comparison to the pregestational period. The sociodemographic factors that influence the physical activity were age, education and net income. The incidence of cesarean section was significantly higher among physically inactive women comparing to those who declared physical activity during pregnancy. Fifty-five point one percent of survey respondents declared barriers precluding sport activities. The most of women got the information about physical activity from the Internet, books or magazines and doctor in charge of the pregnancy. Conclusions: Pregnancy has an impact on the type of chosen physical activity. The sport activities are dependent on age, education and salary. The active women have 30% lower risk for cesarean section in comparison to inactive respondents. Finally, a great group of women gets the information about proper physical activities during pregnancy from unreliable sources.  

The aim of the study was to determine whether early-onset and late-onset fetal growth restriction (FGR) differentially affects the blood–brain barrier integrity. Furthermore, the purpose of the study was to investigate the relationship between the blood–brain barrier breakdown and neurological disorders in FGR newborns. To evaluate the serum tight junction (TJ) proteins and the placental TJ proteins expression, an ELISA method was used. A significant difference in serum OCLN concentrations was noticed in pregnancies complicated by the early-onset FGR, in relation to the intraventricular hemorrhage (IVH) occurrence in newborns. No significant differences in concentrations of the NR1 subunit of the N-methyl-d-aspartate receptor (NR1), nucleoside diphosphate kinase A (NME1), S100 calcium-binding protein B (S100B), occludin (OCLN), claudin-5 (CLN5), zonula occludens-1 (zo-1), the CLN5/zo-1 ratio, and the placental expression of OCLN, CLN5, claudin-4 (CLN4), zo-1 were noticed between groups. The early-onset FGR was associated with a higher release of NME1 into the maternal circulation in relation to the brain-sparing effect and premature delivery. Additionally, in late-onset FGR, the higher release of the S100B into the maternal serum in regard to fetal distress was observed. Furthermore, there was a higher release of zo-1 into the maternal circulation in relation to newborns’ moderate acidosis in late-onset FGR. Blood–brain barrier disintegration is not dependent on pregnancy advancement at the time of FGR diagnosis. NME1 may serve as a biomarker useful in the prediction of fetal circulatory centralization and extremely low birth weight in pregnancies complicated by the early-onset FGR. Moreover, the serum zo-1 concentration may have prognostic value for moderate neonatal acidosis in late-onset FGR pregnancies.