Comparative analysis of the parameters of LPO, antioxidant defense (AOD), and the thiol/disulfide system was performed in fertile and infertile males of reproductive age carrying different genotypes of the glutathione system genes. Blood plasma, blood hemolysate, and ejaculate served as specimens for biochemical studies. A decrease in glutathione S-transferase activity was found in blood and ejaculate specimens from fertile and infertile carriers of nonfunctional GSTT1(0/0)/GSTM1(0/0) genotypes. In infertile carriers of nonfunctional GSTT1(0/0)/GSTM1(0/0) genotypes determining reduced glutathione S-transferase activity, a decrease in the concentration of low-molecular-weight cell antioxidant (reduced glutathione) and an increase in the concentration of secondary LPO products (TBA-reactive substances) were revealed. Identification of carriers the polymorphic GSTT1 and GSTM1 variants and analysis of activity of the thiol/disulfide system enzymes can be recommended for additional evaluation of the risk for reproductive dysfunction in men.

Mature normotensive male WAG rats and stress-sensitive hypertensive ISIAH rats were exposed to "everyday life stress" modelled by alternation of immobilization and adaptation. Increased LPO intensity (increased content of substrates with unsaturated double bonds and primary and secondary LPO products) and reduced content of some antioxidant protection components (reduced retinol level and GSH/GSSG ratio) were revealed in the blood of ISIAH rats. These changes correlated with elevated mean BP. The results can reflect the significant role of LPO changes in the pathogenesis of stress-induced arterial hypertension.

Background There is a lack of data on the prevalence of PCOS and its phenotype in many geographic regions. Siberia is a unique region of the Russian Federation with a multi-raced population living in similar geographic and socio-economic conditions for centuries. Therefore, we considered this population optimal for epidemiological research. Objectives To determine the prevalence of PCOS and the PCOS phenotypes in unselected women in the Eastern Siberia region. Population: We performed the institution-based, cross-sectional Eastern Siberia PCOS Epidemiology & Phenotype (ESPEP) Study during 2016-2019 (СlinicalTrials.gov ID: NCT05194384) and recruited 1148 premenopausal women aged 34.3±6.3 yrs., of which 63.2% were Caucasians, 27.6% Asians, and 9.2% Mixed-race. All subjects provided written informed consent. Exclusion criteria were: current pregnancy or lactation, history of hysterectomy, bilateral oophorectomy, endometrial ablation, uterine artery embolization; and current or previous hormonal medications or insulin-sensitizers intake. The study was approved by the Institutional Ethics Committee of the Scientific Center for Family Health a Human Reproduction (Irkutsk, Russian Federation). Methods include questionnaires, anthropometry, vital signs, gynecological examination, mF-G scoring, pelvic U/S, and blood sampling. For PCOS diagnosis we used the Rotterdam (2003) criteria. Serum samples were analyzed for total testosterone (TT) using LC-MS/MS. DHEAS, SHBG, prolactin, TSH, and 17-OHP were assessed by ELISA. Free Androgen Index (FAI) was calculated (i.e. [TT/SHBG]×100). The upper normal limit (UNL) for the mF-G score was 4, as determined using a 2k-cluster analysis in the total study population. The upper normal limits (UNL) for androgens were determined from the 98th percentiles for these parameters in 143 women, identified as the "super-controls". Pearson Chi-square and Fisher exact one-tailed tests were used to comparing proportions and categorical variables. A p-value of 0.05 was considered statistically significant. Results The total prevalence of PCOS in premenopausal women from Eastern Siberia was estimated as 13.3%, with the following distribution of PCOS phenotypes: 29.1% (A), 9.9% (B), 26.2%(C), and 34.8% (D). There was no significant difference in PCOS prevalence by race: 13.4% in Caucasians, 11.0% in Asians, and 19.8% in Mixed race women (pχ2=0.07). Classic PCOS phenotype A was found in a comparable number of PCOS women (28% in Caucasians, 31.2% in Asians, and 30% in Mixed race); whereas Asian PCOS patients demonstrated the highest proportion of phenotype B (25% vs 5.6% in Caucasians and 5% in mixed-race). The number of hirsute women (with mF-G score >4) was dependent on race and reached 22%, 29%, and 36% among Caucasians, Asians, and mixed-race women, respectively (p χ2=0.001). Conclusions The results of the ESPEP study, conducted in a multi-race unselected population of premenopausal women from Eastern Siberia demonstrated a 13.3% total prevalence of PCOS and race-dependent difference in the clinical manifestation of PCOS. Presentation: Monday, June 13, 2022 12:30 p.m. - 2:30 p.m.

Background: Information about involvement of general nonspecific reactions, in particular lipid peroxidation processes, in the progression of varicose veins of the pelvic (VVP) in women is still too scarce. Aims: To study the intensity of processes of lipid peroxidation and the activity of components of the antioxidant system in women with primary varicose veins of the pelvic at different stages of the disease. Materials and methods: 167 women of reproductive age were examined ― 137 with VVP and 30 made up a control group. All patients with VVP were divided into 3 groups depending on stages of the disease. Spectrophotometric and fluorometric methods of investigation were used. The study was conducted during 2012−2017. Results: It was revealed that the level of primary products of lipid peroxidation, diene conjugates, increased statistically significantly according to the stage of the disease by 1.25 times (in the 1st stage), 1.51 times (in the II stage) and 1.59 times (in the III stage) values. Changes in the content of final TBA-active products showed similar changes-an increase in the mean values for all stages of the disease relative to control (in 1.24, 1.17, and 1.77 times, respectively). Activity of glutathione peroxidase increased in stage 2 of VVP (1.19 times), with the maximum increase in stage III (1.42 times); activity of glutathione-S-transferase increased 1.18 times in the II stage of the disease. The concentration of GSH in the clinical groups was characterized by lower values with respect to the control (by 1.22 times in the 1st stage, in 1.64 times in the II stage), with the maximum decrease of this parameter in the III stage of VVP (3.67 times). The level of catalase activity increased in the I stage of VVP ― by 1.18 times and decreased in the III stage ― by 1.14 times with respect to the control. The activity of SOD showed similar changes with catalase ― in the form of increased activity at the 1st stage (1.35 times higher) and decreased values for II (1.35 times lower) and III (1.65 times lower) for the stages of VVP to the values of control. Conclusions: At progression of primary VVP in women (from the initial stage to the 3rd stage of the disease), there is an increase in imbalance in the lipid peroxidation − antioxidant defense system. Moreover, if the compensatory increase in activity of antioxidant enzymes is registered at stage 1 of the disease, then the most of the antioxidant defense factors decreases as relative to control values, and the initial stages of the disease.

No abstract