The effects of α-tocopherol on the function of the mother-placenta-fetus system and structural changes in the placenta in normal pregnancy were studied in albino rats. The results indicated that inhibition of free radical processes by injections of α-tocopherol in normal pregnancy led to disorders in the feto-maternal circulation, which was proven by morphological changes in the placenta. The disorders in the uteroplacental circulation manifested in the development of small-for-date fetuses and erythrocytosis.
Введение. Новорожденные, родившиеся у матерей с патологией во время беременности, составляют группу высокого риска тромботических и геморрагических осложнений, которые повышаются при наличии у новорожденных перинатальной патологии. Цель исследования: оценить показатели, характеризующие состояние системы фибринолиза и сосудистой стенки в крови новорожденных, родившихся у матерей с преэклампсией (ПЭ), для прогнозирования риска тромботических и геморрагических осложнений у таких детей. Материалы и методы. Обследовано 60 новорожденных, родившихся у матерей с ПЭ. Контрольную группу составили 30 новорожденных от матерей без ПЭ. Исследовали венозную кровь, взятую у новорожденных на 3–5-е сутки жизни. В крови определяли уровень тканевого активатора плазминогена (t-РА), ингибитора тканевого активатора плазминогена (PAI-1) и тромбомодулина. Результаты. Выявлено, что у новорожденных от матерей с ПЭ на 3–5-е сутки жизни отмечаются признаки повреждения эндотелия и повышение фибринолитической активности крови, на что указывает повышение содержания t-РА, PAI-1 и тромбомодулина в крови. Заключение. Полученные данные свидетельствуют о риске развития геморрагических осложнений у таких детей.
Background. Neonates born to mothers with pathology during pregnancy are at high risk of thrombotic and hemorrhagic complications that are increased if neonates have perinatal pathology. Objectives: to assess blood parameters characterizing fibrinolysis and vascular wall of neonates born to mothers with preeclampsia (РЕ), to predict the risk of hemorrhagic complications in these children. Patients/Methods. 60 neonates born to mothers with РЕ were examined. The control group consisted of 30 neonates born to mothers without РЕ. We studied levels of tissue plasminogen activator (t-PA), inhibitor of tissue plasminogen activator (PAI-1) and thrombomodulin (TM) in venous blood taken from neonates on the 3–5th days of life. Results. In neonates born to mothers with PE we revealed on the 3–5th days of life increased blood levels of t-PA, PAI-1 and TM that characterized endothelial damage and increased blood fibrinolytic activity. Conclusions. The data obtained indicate the risk of hemorrhagic complications development in these children.
We compared activity of peritoneal macrophages in rats during normal pregnancy and under the action of NO-synthase inhibitor L-NAME, of E. coli LPS, SOD, and α-tocopherol analogue trolox. In non-pregnant rats, E. coli LPS stimulated peritoneal macrophages, while L-NAME produced a dose-dependent effect. During pregnancy, E. coli LPS activated phagocytosis, while antioxidants trolox, SOD, and L-NAME produced an inhibitory effect.
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