Background: Sleep disorders during pregnancy pose a real threat to the mother and fetus due to a violation of the physiological course of the gestation process, the release of melatonin (central and peripheral). The aim of the study:Comparative evaluation of sleep and chronotype indicators in healthy pregnant and healthy non-pregnant women. Materials and methods: There was conducted a voluntary survey of 210 relatively healthy non-pregnant girls (medical students), the average age was 20±3.5 years, and 69 women with physiological pregnancy (the average age was 29.69±5.03 years) according to the Russian version of the Munich Chronotype Questionnaire in the conditions of Vladikavkaz without a block of subjective self-assessment of the chronotype. 100 people were randomly selected from a group of healthy girls –group 1; pregnant women were divided by trimesters: group 2 (I trimester, 10 women), group 3 (II trimester, 20 women), group 4 – (III trimester, 39 women). Integral indicators were calculated on weekends and working days: the middle and duration of sleep, wake-up time, "jetlag" (desynchronosis), and the chronotype was estimated. Statistical processing was carried out by methods of variational statistics IBM SPSS 23 and Statistica 10.0. Results: Physiological pregnancy is characterized by a statistically significant improvement in sleep indicators, a shift in the middle of sleep to the period of maximum melatonin concentration, a decrease in sleep deficit on working days, and a reduction in jet lag. The increase in sleep duration noted in pregnant women prevents a number of physical and mental health disorders associated with the secretion of melatonin and the restructuring of the NEIM system. In all trimesters of pregnancy, an intermediate chronotype (ImCht) was determined – a "medium" chronotype, in non-pregnant women – a slightly late chronotype (SLCht) – a "slightly late" chronotype, which also speaks in favor of greater sleep stability during the physiological course of pregnancy. Conclusion: The use of the Munich Chronotype Questionnaire (MCTQ) in pregnant women allowed us to determine the trends of physiological changes in normal sleep indicators.
The aim of the study was to evaluate behavioral disorders in experimental metabolic syndrome and the possibility of treatment with complex phytoadaptogens (CPhA). The experiment was carried out on 30 male Wistar rats randomly divided into 3 groups: control (Group 1), metabolic syndrome (MS, Group 2), and treatment of metabolic syndrome with CPhA (Group 3). In Groups 2 and 3, the animals were on a diet high in carbohydrates and fats for 16 weeks. Group 3 animals received CPhA for 14 days with drinking water after 16 weeks of the diet. CPhA consist of standard tinctures of Glycyrrhiza glabra, Rhodiola rosea, Acantopanax senticosus in a ratio of 1:2:1. Behavior was analyzed in the open field test (OFT) and the elevated plus maze (EPM), using Realtimer software (OpenScience, Russia). Data were analyzed using GrafPadPrism 8.03 software (USA). The experiment demonstrated that metabolic syndrome is associated with increased anxiety (decrease in horizontal (p=0.017) and vertical (p=0.017) locomotor activity) and fear (increase in immobility time (p=0.011)) in the OFT. Increased anxiety of animals (decreased open arm time (p=0.012) and increased closed arm time (p=0.043)) and emotional stress (increased frequency of defecation (0.017)) relative to control are also confirmed by EPM data. The data obtained in the treatment group (no significant differences with the control), i.e., a decrease in the manifestations of fear and anxiety (increased orientation and exploratory activity), indicate that the complex phytoadaptogens are an effective anxiolytic. The mechanisms that led to this result remain to be explored, highlighting the role of the autonomic nervous system, leptin and ghrelin in behavior and the effect of the complex phytoadaptogens on them.
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