Drug-loaded erythrocytes: Modern approaches for advanced drug delivery for clinical use.

Scientific organizations worldwide are striving to create drug delivery systems that provide a high local concentration of a drug in pathological tissue without side effects on healthy organs in the body. Important physiological properties of red blood cells (RBCs), such as frequent renewal ability, good oxygen carrying ability, unique shape and membrane flexibility, allow them to be used as natural carriers of drugs in the body. Erythrocyte carriers derived from autologous blood are even more promising drug delivery systems due to their immunogenic compatibility, safety, natural uniqueness, simple preparation, biodegradability and convenience of use in clinical practice. This review is focused on the achievements in the clinical application of targeted drug delivery systems based on osmotic methods of loading RBCs, with an emphasis on advancements in their industrial production. This article describes the basic methods used for encapsulating drugs into erythrocytes, key strategic approaches to the clinical use of drug-loaded erythrocytes obtained by hypotonic hemolysis. Moreover, clinical trials of erythrocyte carriers for the targeted delivery are discussed. This article explores the recent advancements and engineering approaches employed in the encapsulation of erythrocytes through hypotonic hemolysis methods, as well as the most promising inventions in this field. There is currently a shortage of reviews focused on the automation of drug loading into RBCs; therefore, our work fills this gap. Finally, further prospects for the development of engineering and technological solutions for the automatic production of drug-loaded RBCs were studied. Automated devices have the potential to provide the widespread production of RBC-encapsulated therapeutic drugs and optimize the process of targeted drug delivery in the body. Furthermore, they can expedite the widespread introduction of this innovative treatment method into clinical practice, thereby significantly expanding the effectiveness of treatment in both surgery and all areas of medicine.

Epidemiology of pre-eclampsia in the Republic of Kazakhstan: Maternal and neonatal outcomes.

BACKGROUND: Pre-eclampsia (PE) still significantly contributes to maternal and neonatal morbidity and mortality. This study aimed at evaluation of the prevalence of PE among Kazakhstani women and on elucidation of the associated maternal and neonatal outcomes. METHODS: The study followed a retrospective cross-sectional design and was based on the data obtained from the electronic patient registry comprising health records of all patients hospitalized to maternal facilities of Kazakhstan over the period of one year. The diagnosis of PE was made on the basis of criteria established by International Society for the Study of Hypertension in Pregnancy. RESULTS: Out of 2548 patients, 2408 (94.5%) were non-PE cases, while 54 (2.1%) were early-onset PE cases and 86 records (3.4%) were late-onset PE cases. Birth weight of children born from PE pregnancy was significantly lower in pregnancies complicated with early onset PE and constituted 1565 g. Postpartum hemorrhage was more prevalent in pregnancies complicated with PE. CONCLUSION: The data obtained are needed to tailor public health interventions targeted on a reduction of PE problem in Kazakhstan.

Disorder of Endothelia Vessels' Functional State with Malignant Tumors in Patients Exposed Anthropogenic Radiation.

The aim of this research is to determine the characteristics of endothelial factors and the hemostatic system conditions with malignant neoplasms patients, which were exposed to ionizing radiation. Total number of examined people is 223, 153 of them are patients with gastrointestinal tract oncopathology. The article presents the results of the analysis of numerical indicators of endothelial condition and platelet hemostasis of patients, who had cancer. They lived in the regions of Kazakhstan, subjected to contamination of radionuclides as a result of nuclear weapons tests, which took place in this region from 1949 to 1989. These results then were compared to cancer patients and healthy individuals with no radiation risk. The study revealed the presence of higher levels of endothelial dysfunction and following trigger of the hemostatic system in patients with malignant tumors of the gastrointestinal tract. In particular, the defined high degree of endothelial dysfunction include endothelium- dependent vasodilation, content desquamated endothelial cells in peripheral blood and von Willebrand factor. These indicators have a clear correlation with the degree of disorder of studied parameters of the hemostasis, which can cause the development of thrombotic complications.

Pre-conception preparation at the antiphospholipid syndrome as way to improve reproductive health.

INTRODUCTION: Reproductive health is characterized by the condition of the woman in association with the course of pregnancy and childbirth. In this case, the absence of disease plays a fundamental role. Unfortunately, conditions that can negatively impact reproductive health and cause deterioration of pregnancy and delivery outcomes are frequent in women of reproductive age. Antiphospholipid syndrome (APS) is one of the leading conditions that can negatively affect reproductive health and lead to various complications in pregnancy including fetal loss. MATERIALS AND METHODS: We assessed the effectiveness of pre-conception preparing, including traditional therapy of APS in conjunction with system enzyme therapy (SET) and plasmapheresis sessions. We conducted a study in two groups: women with APS and pre-conception preparing (n = 49) and the control group were women without pre-conception preparing (n = 46). RESULTS: The effect of pre-conception preparing in women with APS was assessed by the course and outcome of pregnancy. The total number of women with complications of pregnancy were 39.1% lower in the study group compared to the control group. Risk of miscarriage in the basic group observed 68.7 % less frequently compared to the control group. The frequency of pre-eclampsia was 63.5 % less in the study group compared to the control group. We observed significantly lower rates of placental insufficiency in the study group and the difference in this parameter reached 65.2%. The risk of pre-term birth was 59.4 % lower in the study group compared to the control group. CONCLUSION: We concluded that pre-conception preparing in women with APS increases the possibility of physiological course pregnancy. Pre-conception preparing reduces the incidence of miscarriage, pre-term labor, and the development of pre-eclampsia, and placental insufficiency.