Features of lipid peroxidation processes and antioxidant protection system in pregnant women with type I diabetes mellitus and their newborns

Abstract

The objective: to determine the characteristics of lipid peroxidation processes and the antioxidant defense system in pregnant women with type I diabetes mellitus and their newborns. Materials and methods. 160 patients at 12–41 weeks of gestation were examined. The main group included 110 pregnant women with type I diabetes mellitus, the control group – 50 healthy pregnant patients. Evaluation of lipid peroxidation activity was determined by the content of diene conjugates, lipid hydroperoxide, malondialdehyde in blood serum and erythrocytes, superoxideanion O2 in blood plasma. Results. Analysis of the results in patients with diabetes mellitus showed a significant activation of lipid peroxidation processes. In the first half of pregnancy, the content of lipid hydroperoxide, malondialdehyde of plasma and erythrocytes, as well as superoxide anion in patients with diabetes mellitus was higher than in healthy pregnant women. In the second half, all lipid peroxidation indicators in patients with diabetes mellitus exceeded the corresponding indicators in healthy pregnant women. The dynamics of antioxidant defense system indices in diabetes mellitus indicates a compensatory tension of its main links with a subsequent decrease in their activity, in contrast to healthy pregnant women, where the antioxidant defense system activity increases adequately to the growth of lipid peroxidation activity. Conclusion. Disorders in the lipid peroxidation system in pregnant women with diabetes mellitus should be regarded as such that negatively affect the development and functioning of the fetoplacental complex. The results indicate the need to include the pregnant women with diabetes mellitus in the risk group of the placental dysfunction development, with the aim of its timely prevention, thereby reducing perninatal morbidity and mortality.