Histone-modifying enzymes play a critical role in chromatin remodeling and are essential for influencing several genome processes such as gene expression and DNA repair, replication, and recombination. The discovery of lysine-specific demethylase 1 (LSD1), the first identified histone demethylase, dramatically revolutionized research in the field of epigenetics. LSD1 plays a pivotal role in a wide range of biological operations, including development, cellular differentiation, embryonic pluripotency, and disease (for example, cancer). This mini-review focuses on the role of LSD1 in chromatin regulatory complexes, its involvement in epigenetic changes throughout development, and its importance in physiological and pathological processes.
About 1% of women suffer from premature ovarian failure, which leads to a significant deterioration in the life quality. Most often this condition is caused by performed chemotherapy, autoimmune diseases, surgery performed on ovaries, uterus, or fallopian tubes. The aim of this study was to compare different approaches of tissue and cell therapy in restoring the sexual function in case of ovarian failure induced by chemotherapy. Materials and Methods: The study was carried out in BALB/c mice with the modeled ovarian failure, induced by cyclophosphamide and busulfan. The restoration dynamics of ovarian and sexual function, liver and kidneys after application of cryopreserved explants, cryoextract, placental mesenchymal stem cells, those of adipose tissue has been studied. Results: It has been shown that the use of various methods of cell and tissue therapy has comparable efficacy when treating an ovarian failure induced by chemotherapy. The most rapid and complete restoration of the reproductive system, liver and kidneys was observed when using the placental explants, extract and cells, but not with the use of mesenchymal stem cells of adipose tissue. No recovery of fertility in this experiment was observed. Conclusion: Various methods of cellular and tissue therapy are perspective in treatment of the chemotherapy complications. More effective are placental derivates.
Kozub M. M. Experimental rationale and clinical use of radiowave energy, anti-adhesion drugs, placenta cryoextract, range of physiotherapy measures and assisted reproductive technology in the restoration of reproductive function of patients who underwent operative intervention concerning tubal pregnancy.
Endometriosis occurs in 50 % of women with infertility. Ovarian endometriosis affects 55 % of women with this disease. Surgical treatment of endometrium is indicated if its size is over 3 cm. After removal of the endometriomas there are used diathermic, bipolar energy, radio wave energy, argon plasma coagulation for hemostasis of ovarian tissue. The use of argon plasma coagulation in ovarian hemostasis causes not only hemostatic but also protective effect, which is mediated by the induction of HSP27, SOD2, VEGF and iNOS, which renders an organ−preserving effect when applied to ovarian tissues. Repeated surgery for ovarian endometrium should be performed taking into account the risk of reduced levels of antimullerian hormone, which may adversely affect the further implementation of reproductive function, including the use of assisted reproductive technologies. The authors comparatively have evaluated the treatment of 900 patients of reproductive age with endometrioid cysts of the ovaries and other concomitant gynecological pathology, which were three clinical groups. The patients received radiowave energy, argonoplasmic coagulation, intraoperative use of various anti−adhesive drugs and combinations of drugs in the postoperative period. It was found that the use of argon plasma coagulation for hemostasis of ovarian tissues after removal of endometrioid cysts, polyethylene oxide gel with carboxymethylcellulose intraoperatively and gonadotropin−releasing hormone agonists, dienogest 2 mg per day for three months contributed to the pregnancy onset in post−srugery period in 56.7 % of patients. It has been noted that in women the presence of adhesions in combination with corpus luteum cysts, endometrial polyps, uterine leiomyoma reduces the onset of pregnancy by 8.0, 12, and 24 times, respectively.
Key words: endometrial ovarian cysts, diagnosis, treatment, rehabilitation in the post−surgery period.
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