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Aim: To elucidate the nature of the expression of progesterone receptors (PR) and estrogen receptors (ER) of the endometrium in patients with endometriosis in order to study the effect of endometriosis therapy on endometrial receptors while taking progestogens and agonists of gonadotropin-releasing hormones (a-GnRH). Materials and Methods. A total of 119 women were examined, including 69 patients with small-sized endometrioma with adenomyosis, who were divided into two subgroups 322 during the study: 35 women received Dienogest therapy, other 34 patients received Diferelin. To study the expression of endometrial steroid receptors, the patients underwent endometrial aspiration biopsy from different points of the uterine cavity before the treatment and after 3 months against the background of the therapy for endometriosis. Results Endometriosis therapy affects the expression pattern of endometrial steroid receptors. While taking Dienogest, the sensitivity of the endometrium to estrogens increases, and the number of cells with a positive response to progesterone receptors is partially reduced. When using gonadotropin-releasing hormone agonists (Dipherelin), the sensitivity of the uterine mucosa to ovarian hormones decreases, which is confirmed by the adequate expression of ER and PR. There is a need for more research on estrogen beta receptors, as well as progesterone receptors A and B, and the related ratios.

Aim. To determine changes in the values of pituitary and ovarian hormones in women with endometriosis-associated infertility, as well as to evaluate the impact of endometriosis therapy on hormonal parameters Materials and Methods. Sixty-nine women with small-sized endometriomas with adenomyosis (target group) and 50 women with tubal infertility (controls) were examined. The values of pituitary (luteinizing and follicle-stimulating hormones, prolactin) and ovarian (estradiol, tubular antimullerian hormone) hormones were studied. The comparison of 506 quantitative indicators between the studied groups of women was carried out using the Mann-Whitney U-test, the statistical significance of the results was assessed at a level of not less than 95% (risk of error not more than 5%-p <0.05). Results Infertile women with endometrioma and adenomyosis have lower AMH levels than infertile women with tubal factor. Among patients with endometriosis, there is an increase in serum FSH, LH, prolactin and estradiol compared with women without endometriosis. Dienogest moderately inhibits the secretion of FSH and LH; it has almost no effect on blood AMH and estradiol values. The use of dienogest can moderately increase the level of prolactin, It is noteworthy that these indicators are within the reference range. The use of diferelin for the treatment of endometriosis has a more active effect on the hormonal status of patients, given the decrease in such indicators as FSH and LH, AMH, estradiol and prolactin Conclusions. Women with infertility against the background of endometriosis have minor changes in the hypothalamic-pituitary-ovarian system, which indicates the need to develop medical measures in order to correct them. The use of dienogest compared to diferelin affects the hormonal status of patients with endometriosis to a lesser extent, given the pronounced anti-proliferative effect.

Background. Chronic endometritis and endometriosis have a lot in common. Both diseases are long-term inflammatory processes, with definitively unspecified etiological factors and pathogenetic mechanisms that negatively affect fertility and may cause pelvic pain or abnormal uterine bleeding. The issue of effective and timely diagnosis of chronic endometritis remains open due to the lack of specific clinical symptoms and clinical examination data. Assessment of current scientific evidence of the interrelationship between endometriosis and chronic endometritis. Materials and methods. A systematic search of scientific medical information has been conducted in English-language databases: MEDLINE, Scopus, Web of Science, Medline, The Cochrane Library, PubMed. Results. According to the review of various scientific studies that have recently been conducted, it has been found that patients with endometriosis statistically have a significantly higher risk of developing chronic endometritis by 1.3-2.5 times than women without endometriosis. Using a histological endometrial study and detection of CD138, chronic endometritis was found in 52.94 % of women in the endometriosis group and in 27.02 % of patients in the endometriosis-free group; the rate was significantly higher in the endometriosis group than in the control group (p = 0.0311). Moreover, 76% of women with endometriosis showed inflammatory processes of pelvic organs (compared to the control group, where inflammation was found in 38.4 % of women, p < 0.0001). Conclusions. Patients with endometritis demonstrate a positive correlation with development of endometriosis. Given the inability to establish a causal relationship between endometriosis and chronic endometritis, extended diagnosis is necessary to eliminate chronic endometritis, especially if women have abnormal uterine bleeding or chronic pelvic pain. The combination of histological and immunohistochemical endometrial examination methods has shown its effectiveness in timely diagnosis of chronic endometritis. Identifying and adequately treating this condition will help avoid unnecessary surgery.