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OBJECTIVE To evaluate serum concentration of 8-isoprostane, nitrotyrosine (NT), and total antioxidant capacity (TAC) in pregnant women with diabetes mellitus (DM) considering preconception planning and method of diabetes correction in 11-14 and 30-34 weeks. MATERIALS AND METHODS The study included 130 women: T1DM (n = 40), T2DM (n = 35), gestational diabetes (GDM, n = 40) and the control group (n = 15). The serum concentrations of NT, 8-isoprostane, and TAC were measured by ELISA methods. RESULTS Elevated 8-isoprostane levels were observed in all patients with DM, but this biomarker\'s maximum values have been seen in T1DM and T2DM on insulin groups. A similar tendency was observed for the concentration of NT in both the 1st and 3rd trimesters. TAC levels showed a statistically relevant decrease in all DM groups compared to the control. The correlation analysis showed a direct correlation between HbA1c and serum 8-isoprostane levels in the 1st (r = .27) and 3rd (r = .3) pregnancy trimesters as well as inverse correlation with TAC level (r = -.48). Direct (NT, 8-isoprostane) and inverse correlations (TAC) were fixated for this biomarker concentration and preeclampsia rates. CONCLUSION DM in pregnancy is related to oxidative stress activation, which might lead to the development of adverse perinatal outcomes.
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10.1080/09513590.2020.1816727
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Gynecological_endocrinology_:_the_official_journal_of_the_International_Society_of_Gynecological_Endocrinology
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Maternal serum nitrotyrosine, 8-isoprostane and total antioxidant capacity levels in pre-gestational or gestational diabetes mellitus.
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