[Association of polymorphic markers of GSTP1 gene with oxidative stress parameters in infertility men].

Genetic factors cause various forms of male infertility in 30-50% of cases. The role of oxidative stress in male infertility has been broadly recognised, and the search for a new marker to determine the redox environment in semen has gained considerable interest. AIM: to establish the association of two polymorphic loci Ile105Val, Ala114Val of the GSTP1 gene (glutathione transferase class pi-1) with the parameters of oxidative stress in men with infertility. MATERIALS AND METHODS: the main study group consisted of 160 men of reproductive age with infertility (mean age - 29,9+/-5,3 years). The control group included 104 practically healthy men with realized reproductive function (average age - 30,2+/-3,6 years). Molecular and genetic study of polymorphisms of the GSTP1 gene was performed by using real-time PCR. The material for the study was DNA samples, the extraction of which was carried out from samples of whole venous blood. The components of lipid peroxidation and antioxidant protection were determined in the blood and ejaculate using spectrophotofluorometric METHOD: s. Resalts: While analyzing the frequency of occurrence of the Ile105Val polymorphism of the GSTP1 gene in men with infertility and fertile men, statistically significant differences were found at (2=7,487; p=0,024). No significant differences were found between the groups (2=3,823; p=0,14), when were compared the frequency distribution of the genotypes of the Ala114Val polymorphism of the GSTP1 gene in men diagnosed with infertility and fertile patients. In men with infertility, carriers of the GSTP1(Ile105Val) heterozygous polymorphism, associations of the studied gene were established with an increase in GSH activity by 7% and a decrease in GR by 20% in blood and a decrease in SOD activity by 8% in the ejaculate, in contrast, fertile men, carriers of heterozygous polymorphism GSTP1(Ile105Val), which have associations with an increase in total AOA blood by 20% and with a decrease in GPO activity by 24% in the ejaculate. In men with infertility, carriers of the heterozygous polymorphism of GSTP1(Ala114Val), associations of the studied gene were established with a decrease in -tocopherol concentration by 15%, an increase in GPO activity by 25% in blood and a decrease in SOD activity by 7% in ejaculate, in contrast, fertile men, carriers of heterozygous polymorphism GSTP1(l114Val), which have associations with an increase in the concentration of DK in blood by 19% and with a decrease in GST activity by 32% in the ejaculate. CONCLUSION: identification of carriers of polymorphic loci Ile105Val, Ala114Val GSTP1, as well as determination of enzymes of the thiol disulfide system can be recommended for additional assessment of the risk of reproductive disorders in men.

Metabolic role of lipid peroxidation processes and antioxidant defense system in the pathogenesis of hypothalamic syndrome.

LPO processes and blood antioxidant status were studied in reproductive-age women with the hypothalamic syndrome. The control group consisted of somatically healthy women without reproductive disorders. Female patients with the hypothalamic syndrome were characterized by an imbalance in the LPO-antioxidant defense system, which aggravated the course of the underlying disease.

[Experience in the treatment of normogonadotropic infertility in men].

This study presents an experience of application of follicle-stimulating drug in the treatment of men with normogonadotropic infertility. Patients of the study group have received standard treatment, including multivitamins, and additionally received follitropin-alpha (Gonal-f). They also underwent ultraviolet blood irradiation. Patients of comparison group were treated according to a standard scheme. All men underwent standard clinical and laboratory examination. The therapy consisting of follitropin alpha and ultraviolet blood irradiation in patients with infertility normalizes the function of endocrine glands, as indicated by an increase of testosterone levels, and decrease of prolactin and FSH levels. Moreover, there is a marked stimulation of spermatogenesis, as evidenced by a significant increase in the number of active sperm. The results of this study allow to recommend follitropin-alpha (Gonal-f) and ultraviolet blood irradiation for the correction of normogonadotropic treatment in men.

[Characteristics of the antioxidant system of healthy people of main ethnic groups living near Baikal Lake].

The antioxidant system of blood is the important factor that characterizes the adaptive possibilities of human organism. The estimation of state of the antioxidant protection and lipid peroxidation systems at men and women of two Baikal Lake ethnic groups was carried out. Spectrophotometric and fluorometric methods were used during the study. Increase of by-products of lipid peroxidation with decrease of activity of the antioxidant protection system was observed at men of the Buryat ethnicity in comparison with Russian ones. At women of the Buryat ethnicity was observed the increase of the primary products of lipid peroxidation with the adequate antioxidant response in comparison with Russian ones.

Activity of lipid peroxidation in infertile women from different populations.

We studied parameters of lipid peroxidation (LPO) in women with infertility, resident of the Republic of Buryatia. The levels of malonic dialdehyde (MDA) were increased in the examined infertile women from Buryat and Russian populations. Reduced total antioxidant activity, activity of superoxide dismutase (SOD), and α-tocopherol levels were revealed in patients from Buryat population; decreased concentrations of reduced glutathione were recorded in patients from Russian populations.