Vol 26, No 4 (2022): GINECOLOGY

Placenta is a unique organ, without which the very phenomenon of human pregnancy is impossible. Semiallogeneous nature, localization of the placenta, complex and heterogeneous cellular composition determines its complex and multifaceted role in the course of physiological pregnancy, indicates the importance of studying this organ in a number of reproductive pathologies. The purpose of this review was to analyze the literature sources illustrating the importance of energydependent processes in placental metabolism and to determine the molecular basis of placental energy conversion. Publications of foreign and Russian authors from PubMed database and scientific electronic library eLIBRARY.ru were used when writing the review. The review highlights the main functions of the placenta: transport and synthetic functions in terms of their place in the structure of energy expenditure of the organ. The systems by which the transport of ions and gases from maternal blood through the placental barrier is performed, are considered. The role of the placenta in the synthesis of steroid hormones and glucocorticoids is detailed. The main bioenergetic systems are also considered: placental glucose metabolism, the functional activity of mitochondria and the creatine kinase system of the placenta. These data allow us to put the placenta on a par with other organs with high energy requirements (brain, transverse striated skeletal muscles, heart, kidneys, liver), which are most susceptible to metabolic disorders. Maintaining a balance between expenditure and synthesis of macroergic compounds in the placenta is critical for an adequate course of physiological pregnancy, and imbalances can lead to such pathologies as fetal retardation syndrome or preeclampsia. Further study of placental energy supply systems seems important for understanding the mechanisms of intrauterine development disorders and developing their pathogenetic treatment.

Relevance . The relevance of the problem of pelvic prolapse is due to the prevalence of the disease, the tendency to rejuvenation and progression. This, according to the survey, affects the quality of life of women, leads to disruption of sexual functioning, and reduces the ability to work. The methods of surgical treatment that exist in the arsenal of modern operative gynecology can contribute to the development of cicatricial adhesions, infectious complications and recurrence of prolapse, which creates the need for repeated interventions. The development and introduction into practice of new methods of treatment is a natural necessity. The most effective technique for the surgical treatment of genital prolapse is laparoscopic sacrocolpopexy using titanium silk implants. Materials and Methods. A prospective cohort study of 30 patients aged 37 to 74 years with clinical manifestations of grade II-IV prolapse, statistical data analysis and analysis of the results of a survey of patients in the postoperative period in dynamics over 3-6-12 months from 2019 to 2021 was carried out. The study used a three-stage method of surgical assistance (patent dated September 15, 2020 No. 2020130382/14 (054923) in the volume - laparoscopic promontofixation, MacCoul sacro-uterine ligament plasty, colporrhaphy, colpoperineorrhaphy, levatoroplasty. Results and Discussion. It has been established that pregnancy and childbirth are among the main factors provoking the development of pelvic floor muscle failure. The duration of postoperative follow-up in our study was 3-14 months. No complications were diagnosed during this period. In 12 patients (40.0 %) during the first month there were periodic pulling pains in the lower abdomen and perineum, in 2 (6.6 %) - urinary incontinence. Titanium silk has a lower affinity for surrounding tissues compared to polypropylene scaffold systems, which makes it possible to consider it as an alternative material to synthetic analogues and reduce the risk of mesh-associated complications. The resistance of the titanium endoprosthesis to antiseptics and microbial agents predisposes to its long-term use and the absence of the need for replacement. Conclusion. The data obtained make it possible to judge the high efficiency of the developed technique for the surgical treatment of pelvic prolapse of pelvic floor defects in patients with rectocele and cystocele, minimizing the recurrence of the disease and the risk of developing mesh-associated complications, which allows choosing a personalized management strategy for this cohort of patients.

Infertility is an important socio-economic problem due to the fact that planned childbearing occurs much later than three decades ago. In recent years, more attention has been paid to the role of uterine leiomyoma in the development of infertility. Uterine leiomyoma is a benign monoclonal, well-demarcated encapsulated tumor originating from the smooth muscle cells of the cervix or body of the uterus. Uterine leiomyoma is the most common uterine tumor in the reproductive age group, affecting 20-50 % of women. With conceptual changes in marriage and childbearing, the number of women over 35 with leiomyoma who want to have children has also increased significantly. The need to treat submucosal fibroids is widely recognized, but fibroids of other locations and sizes remain a clinical mystery. The purpose of the literature review was to determine the role of uterine fibroids in predicting infertility. It has been established that the incidence of uterine leiomyoma in women of reproductive age is on average about 40 %, infertility associated with this pathology occurs in 5-10 % of women. In 10 % of cases of infertility, uterine leiomyoma is the only established cause of infertility. Uterine leiomyoma is common among women of reproductive age, and as women continue to delay childbearing, an increasing number of patients will require fertility-preserving treatment options. Leiomyoma affects not only fertility but also obstetric outcomes. Women with intramural fibroids without cavity deformity have a 21 % reduction in live birth rates after in vitro fertilization compared with controls without fibroids. Despite advances in fundamental understanding of the biology of leiomyomas, the role of different fibroid variants remains a matter of discussion. The question of the negative impact of submucosal nodes on infertility today is not in doubt, and the effect of subserous and intramural nodes requires further study.

The sum of the effects of all negative factors on the human body is manifested, including in the form of an imbalance in the work of the immune system, which leads to a violation of the recognition and elimination of foreign substances of the most diverse origin. This is manifested in an increase in the frequency of development of inflammatory processes, the risk of their chronicity and the development of complications, the identification of opportunistic or conditionally pathogenic flora as a pathogen, including those with atypical biological properties and antibiotic resistance. The use of etiotropic chemotherapy alone in the treatment does not allow achieving sufficient control over many infectious diseases. The purpose of this review was to investigate additional, alternative approaches to influencing anti-infective immunity. An analysis of the strategy based on the use of modulation of the immune response in the treatment of patients was carried out and its advantages over traditional antimicrobial treatment were determined. The concept of «immunotherapy» is discussed, which implies a variety of effects on the immune system in order to stop the pathological process. The review highlights the main types of immunotherapy - local, general, combined and monoimmunotherapy, as well as active and passive, specific and nonspecific. The review provides convincing data on the need for immunomodulators to meet a number of requirements, analyzes various ways of classifying them and their areas of application. The necessity of using immunotropic drugs on the basis of a comprehensive examination is emphasized, taking into account the correspondence between the nature of clinical manifestations and the severity of changes in immunological parameters. The analyzed data allow us to conclude that immunomodulatory therapy can be used to restore the function of the immune system to the physiological norm after a severe inflammatory process at the stage of immunorehabilitation.

The successful use of surgical and medical methods of jaw bone tissue restoration has been convincingly confirmed in clinical practice. At the same time, technologies are being developed to improve the osseointegration of dental implants in patients with osteoporosis. The use of various implant coatings, as well as systemic therapy, demonstrate the emergence of new directions in the treatment of patients with partial or complete secondary edentulism with concomitant osteoporosis. This trend is relevant in modern medicine . Information was obtained from the PubMed database, using the keywords «osteoporosis» and «osseointegration» and «dental implantation» and «zoledronic acid» from 2016 to 2022. Articles were selected based on experimental work. Numerous studies have shown that bone tissue is an effective indicator of osteoporotic changes. The main changes in bone tissue in osteoporosis are emphasized - a decrease in bone volume, deterioration of the microarchitecture of the trabecular bone and processes that prevent osseointegration - loss of bone mass, a significant decrease in the percentage of contact in the implant-bone complex. Methods of dealing with the negative impact on the operation of dental implantation have been identified. In a review of studies on the systemic administration of drugs based on bisphosphonates, an increase in the osseointegration of dental implants was revealed, the systemic administration of zoledronic acid preparations significantly increased the formation of new bone, which in turn contributed to the elimination of such a negative effect of osteoporosis as bone resorption. In addition to the systemic administration of bisphosphonates, experimental studies describe the topical application of bisphosphonates in the form of various implant coatings. Topical application of bisphosphonates also contributed to increased osseointegration. Microstructured coated implants showed less marginal bone loss compared to uncoated implants. Conclusion. The use of dental implants with modified macro- and microrelief, as well as systemic drug therapy, remains the main direction of scientific research that contributes to the optimization of osseointegration of dental implants.

Biomarkers are molecules that behave as of biological states. Ideally, they should have high sensitivity, specificity, and accuracy in reflecting the total disease burden. The review discusses the current status of biomarkers used in neurological disorders. Neurodegenerative diseases are a heterogeneous group disorders characterized by progressive loss of structure and function of the central nervous system or peripheral nervous system. The review discusses the main biomarkers that have predictive value for describing clinical etiology, pathophysiology, and intervention strategies. Preciseness and reliability are one of important requirement for good biomarker. As a result of the analysis of literature data, it was revealed that beta-amyloid, total tau protein and its phosphorylated forms are the first biochemical biomarkers of neurodegenerative diseases measured in cerebrospinal fluid, but these markers are dependent upon invasive lumbar puncture and therefore it’s a cumbersome process for patients. Among the various biomarkers of neurodegenerative diseases, special attention is paid to miRNAs. MicroRNAs, important biomarkers in many disease states, including neurodegenerative disorders, make them promising candidates that may lead to identify new therapeutic targets. Conclusions. Biomarkers of neurological disease are present optimal amount in the cerebrospinal fluid but they are also present in blood at low levels. The data obtained reveal the predictive value of molecular diagnostics of neurodegenerative disorders and the need for its wider use.

Relevance. Сardiovascular status could be assessed by maximal aerobic capacity (VO2max) through direct analysis of the gases involved in pulmonary ventilation and monitoring fluctuations in intervals between beats over time as heart rate variability. The aim of the study was to investigate the relationship between VO₂max and heart rate variability in young adults. Materials and Methods. A total of 100 young adults between the ages of 18 and 25 were included in observational study, who did not engage in any strenuous physical activity, 50 of whom were male and 50 of whom were female.There were measured Heart rate variability in the frequency domain; LF, HF, LF/HF, and time domain; SDNN, RMSSD, pNN 50, and VO₂max were assessed using a treadmill test according to Graded Exercise Protocol. Results and Discussion. There was weak positive correlation of VO2max with LF ( r = 0.177) and weak negative correlation with HF ( r = -0.141). Male participants had a weak negative relationship between VO2 max and LF ( r = -0.075), whereas female respondents had a weak positive relationship(r = 0.286). There was weak negative correlation of VO₂max with LF/HF ratio for male subjects but weak positive correlation ( r = -0.101) for female subjects. For male and female participants, there was a weak negative association of VO2max with SDNN ( r = -0.170) and ( r = -0.301), respectively. Male and female participants had a weak negative association of VO₂max  with RMSSD, with ( r = -0.154) and ( r = -0.284) respectively. Male and female participants had a slight negative association of VO₂max with pNN 50, with ( r = -0.062) and ( r = -0.441) respectively. Conclusion. Significant variations were found in the time domain and frequency domain indices including HF and LF/HF ratio which represents the balance between sympathetic and parasympathetic responses.