REALIZATION OF FEDERAL AND REGIONAL PROGRAMS OF INFERTILITY TREATMENT

High frequency of infertility in the Irkutsk region (18—20 %) sharply limits population reproduction. Tubo-peritoneal factor (97,3 %), man's infertility (20 %) are leading factors of infertility in Irkutsk region. It predisposes wide using of IVF as the main way of reproductive problems solution in population. Efficiency of IVF programs depends on such factors as age of patients; duration and causes of infertility

Candidate vaccine construction against tick-born encephalitis based on hybrid recombinant flagG-protE-protein

The present work describes the construction of the gene encoding the recombinant protein flagG­protE, its synthesis, purification and study. The recombinant flagG­protE protein is a promising molecule for developing a candidate recombinant vaccine against tickborne encephalitis by the ability to bind to monoclonal antibodies (MCA) against native protein E of tick­borne encephalitis virus. The antigenic determinants of two recombinant proteins were studied: protE and flagG­protE using a panel of 8 MCA. The recombinant protein protE comprises the tick­borne encephalitis virus envelope protein and the flagGprotE recombinant protein has an additional flagG domain encoding flagellin G of Salmonella typhi. It was found that the MCA tested revealed epitopes on the recombinant protein protE. This indicates that the investigated recombinant protein has an antigenic structure similar to the antigenic structure of the native tick­borne encephalitis virus protein E. In the study of the recombinant protein flagG­protE by the ability to bind a panel of 8 MCA, only five of them react with epitopes of the tested protein. MCA 4F6, 7F10, and 6B9 did not recognize the corresponding epitope in the recombinant flagG­protE protein, while in the recombinant protein protE, these epitopes were detected successfully. Our data indicate that the antigenic structure of recombinant protE­protein can be changed under the influence of the flagellin domain, which in turn can lead to the unavailability of some antigenic determinants. This fact must be taken into account when constructing recombinant molecules with antigenic properties. Nevertheless, the fundamentally important regions in the region of the fusion peptide and III domain are antigenically present on the surface of the recombinant protein. This should ensure the formation of neutralizing antibodies, and the presence of a complete amino acid sequence of protein E in the recombinant protein induces the formation of a T­cell immune response. The emergence of a new generation of vaccines against tick­borne encephalitis with a higher level of safety and immunogenicity will improve the vaccine prevention of the population from tick­borne encephalitis

Assisted hatching in cryopreservation protocols in patients with tuboperitoneal infertility

At present, the problem of increasing the effectiveness of programs of assisted reproductive technologies and successful infertility treatment is still relevant. Assisted hatching used in the devitrificated embryo transfer facilitates the exit of the embryo from the pellucide zone. Yet the clinical efficacy of assisted hatching is relevant and debatable. There are no clear indications for the use of this technology, and no groups of patients have been identified.The aim of the study. To assess the effectiveness of laser hatching in the frozenthawed embryo transfer programs in patients with tuboperitoneal infertility.Materials and methods. We examined 300 women with tuboperitoneal infertility who had their embryos frozen for transfer. Inclusion criteria: age from 18 to 35 years; tuboperitoneal infertility; embryos cryopreserved for transfer. Exclusion criteria: age more than 36 years; other infertility factors. Women were divided into 2 groups: group 1 – women who had a frozen-thawed embryo transfer with preliminary laser hatching (n = 137); group 2 – control group (n = 163).Results. There were no differences between the groups in the mean age, body mass index and the age at menarche. According to the results of the embryological stage, there were also no differences in the number and quality of frozen embryos. The pregnancy rate in the group with preliminary laser hatching was 44.5 %, which is significantly higher than in the control group (42.3 %; р ≤ 0.001). We also found statistically significant differences in pregnancy outcomes: in the frequency of spontaneous miscarriages – 13.1 % and 20.2 % respectively (p ≤ 0.001), in the frequency of term deliveries – 30.7 % and 22.1 % respectively (p ≤ 0.001).Conclusion. In our study, the using laser hatching in women with tuboperitoneal infertility positively affected the embryos implantation in the cryopreservation protocols. Pregnancy and live birth rates are higher after using hatching technology, and the frequency of miscarriages up to 12 weeks is lower. This provide an opportunity to further study the effect of hatching on long-term outcomes, such as gestation course and childbirth

Ectopic pregnancy and acute appendicitis during intrauterine pregnancy after in vitro fertilization

The paper presents a clinical case of the Patient T., 34years old, who underwent the treatment in the Department of ART of the Regional Perinatal Center for tubal peritoneal infertility for seven years. In the anamnesis: one spontaneous uterine pregnancy, culminating in medical abortion for up to 12 weeks, treatment for chronic salpingo-oophoritis, tubectomy on the right side for a progressing ectopic pregnancy. The patient denied the presence of Chlamydia infection in the anamnesis. Studies on sexually transmitted infections before the 1VF program were negative. During laparoscopic tubectomy, no endometriotic foci were found. There were four programs of ART in anamnesis: in 2009, 2012, 2014,2016. During the fourth ART program in 2016, two embryos were transferred to the uterine cavity, resulting in a uterine pregnancy in combination with an ectopic pregnancy diagnosed in the ultrasound study at 4 to 5 weeks of gestation, in the absence of clinical symptoms. The patient underwent emergency laparoscopic tubectomy on the left, the course of the postoperative period proceeded without complications. Later, in the period of uterine pregnancy of 7-8 weeks, with a clinical picture of acute appendicitis, the woman was hospitalized in the surgical department where she underwent laparoscopic appendectomy. Later the pregnancy proceeded without complications, at 39 weeks the planned cesarean section was performed, a girl weighing 3480 grams, 51 cm long with an Apgar score of 9-10 points was extracted on the operation. The course of the early postoperative period without complications, the patient was discharged with the child on the 4th day

RISK FACTORS AND CRITERIA FOR PREDICTION OF OVARIAN HYPERSTIMULATION SYNDROME

Ovarian hyperstimulation syndrome (OHSS) is the most frequent and dangerous complication of IVF programmers. Evaluation of OHSS risk factors allows to perform differentiated, approaches to controlled ovarian stimulation. This article presents the results of OHSS risk factors analysis in 775 IVF cycles. It was found that young age (< 35 years), PCOS, tubal factor of infertility and low BMI (< 25 kg/m2) are the significant risk factors for OHSS

Zika virus has an oncolytic activity against human glioblastoma U87 cells

Glioblastoma is a highly lethal brain cancer. Virotherapy with the use of oncolytic viruses has since recently been regarded as a promising approach for the clinic treatment of human glioblastomas. The purpose of this work was to perform a primary evaluation of the Zika virus as a potential oncolytic agent against glioblastomas. In vitro experiments showed that the Zika virus strain MR 766 is able to selectively infect and lyse neoplastic cells of the human glioblastoma cell line U87 MG. The selectivity index (SI, the ratio of infectious titer for tumor cells to titer on normal untransformed cells) was 2·102. The selectivity of the replicative activity of Zika virus in relation to U87 MG glioblastoma cells was additionally confrmed by indirect immunofluorescence. Using the model of immunodefcient SCID mice with subcutaneous xenografts of human glioblastoma U87 MG, a strong antitumor activity of the Zika virus under a course (daily for 4 days) of intratumoral administration of 5·105 TCID50 of Zika virus was shown. Treatment with Zika virus resulted in more than a 10­fold reduction in mean volumes of tumors. The tumor growth inhibition index was 92.63 %. Recurrences (metastases) of tumor re­growth were not registered within 64 days of observation. This result demonstrated the prospect of further in­depth studies of the Zika virus as a potential oncolytic agent against human glioblastomas

Analysis of the efficiency of IFV techniques (ICSI, PICSI) in the assisted reproductive technology programs

The male factor is the cause of infertility in 40 % of cases. This study is dedicated to the efficiency assessment of ICSI and PICSI techniques and the determination of indications of these methods. There are some relative indicationsfor ICSI in clinical practice: advanced reproductive age of patients, a small number of obtained oocytes, prolonged infertility, repeated attempts of in vitro fertilization. However, normal sperm values are registered in 71.3 % of cases. PICSI method is more preferable at high level of DNA fragmentation and associated changes in sperm indicators. Nevertheless, the pregnancy rate after these methods was comparable - 19.3 % and 19.7 % respectively. The results indicate that the ICSI and PICSI methods do not have a negative impact on the quality of the embryos and do not increase the pregnancy rate

Influence of factors of solar and geomagnetic activity on development of spontaneous 82 labor activity

Studies of recent decades have proved the effect on the human body a number of physical factors that are caused by the influence of solar corpuscular streams that change the state of the magnetosphere. The least studied problem is the influence of heliogeophysical factors and solar activity on different periods of organism development, from conception to birth. There is no data on the influence of magnetic storms on spontaneous labor, which was the purpose of this study. Solar activity indicators are presented by the Space Weather Prediction Center (SWPC) of the US National Oceanic and Atmospheric Administration (NOAA: www.swpc.noaa.gov). The results of correlation analysis between spontaneous labor activity of 306 pregnant women in the period of 1.01-08.02.2013 depending on solar activity (Wolf numbers), radio emission flux at the wavelength of 10.7 cm and planetary index (Ap-index) characterizing the physical state of the Earth's magneticfield are analyzed. Reliable correlation between the number of urgent delivery and the flow of radio emission at a wavelength of 10.7 cm and the Wolf numbers was not found. Increase in the activity of spontaneous labor by 2.3 times (r = 0.43; p < 0.05) was recorded three days after the magnetic storm (Ap-index = 21nTl) compared to days calm in geomagnetic terms. The data showed a significant role of dynamics of external factors in the onset of labor