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The parameters of pro and antioxidant processes in the amniotic fluid in the dynamics of physiological pregnancy and preeclampsia were studied. Spectrophotometric and fluorimetric methods were used to evaluate the activity of NADPH-oxidase, xanthine-oxidase, superoxide dismutase (SOD), catalase, glutathione-dependent enzyme systems, the content of antioxidant vitamins - retinol and α-tocopherol, lipid peroxidation products (LPP) - diene conjugates and Schiff bases, and parameters of peroxide chemiluminescence. It was found that with preeclampsia there is an increase in the activity of prooxidant enzymes NADPH-oxidase and xanthine-oxidase, a decrease in the activity of antioxidant enzymes SOD, catalase, glutathione peroxidase, glutathione reductase, glutathione transferase, and the content of fat-soluble vitamins. Between pro- and antioxidant indices and the content of LPP, intensity of chemiluminescence a correlation is established, the degree of which is different in the II and III trimesters of pregnancy. The revealed changes obviously play a pathogenetic role in the formation and further development of preeclampsia, and the indicators of oxidation-reduction processes can serve as informative markers of pre- and postnatal pathology.
This article was published in the following journal.
Name: Klinicheskaia laboratornaia diagnostika
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A clear, yellowish liquid that envelopes the FETUS inside the sac of AMNION. In the first trimester, it is likely a transudate of maternal or fetal plasma. In the second trimester, amniotic fluid derives primarily from fetal lung and kidney. Cells or substances in this fluid can be removed for prenatal diagnostic tests (AMNIOCENTESIS).
A condition of abnormally high AMNIOTIC FLUID volume, such as greater than 2,000 ml in the LAST TRIMESTER and usually diagnosed by ultrasonographic criteria (AMNIOTIC FLUID INDEX). It is associated with maternal DIABETES MELLITUS; MULTIPLE PREGNANCY; CHROMOSOMAL DISORDERS; and congenital abnormalities.
The innermost membranous sac that surrounds and protects the developing embryo which is bathed in the AMNIOTIC FLUID. Amnion cells are secretory EPITHELIAL CELLS and contribute to the amniotic fluid.
Blocking of maternal circulation by AMNIOTIC FLUID that is forced into uterine VEINS by strong UTERINE CONTRACTION near the end of pregnancy. It is characterized by the sudden onset of severe respiratory distress and HYPOTENSION that can lead to maternal DEATH.
Onset of HYPERREFLEXIA; SEIZURES; or COMA in a previously diagnosed pre-eclamptic patient (PRE-ECLAMPSIA).
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