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Introduction: In this review, the analysis of technologies for obtaining biologically active proteins from various sources is carried out, and the comparative analysis of technologies for creating producers of biologically active proteins is presented. Special attention is paid to genetically modified animals as bioreactors for the pharmaceutical industry of a new type. The necessity of improving the technology of development transgenic rabbit producers and creating a platform solution for the production of biological products is substantiated. The advantages of using TrB for the production of recombinant proteins: The main advantages of using TrB are the low cost of obtaining valuable complex therapeutic human proteins in readily accessible fluids, their greater safety relative to proteins isolated directly from human blood, and the greater safety of the activity of the native protein. The advantages of the mammary gland as a system for the expression of recombinant proteins: The mammary gland is the organ of choice for the expression of valuable recombinant proteins because milk is easy to collect in large volumes. Methods for obtaining transgenic animals: The modern understanding of the regulation of gene expression and the discovery of new tools for gene editing can increase the efficiency of creating bioreactors for animals and help to obtain high concentrations of the target protein. The advantages of using rabbits as bioreactors producing recombinant proteins in milk: The rabbit is a relatively small animal with a short duration of gestation, puberty and optimal size, capable of producing up to 5 liters of milk per year per female, receiving up to 300 grams of the target protein.

Introduction. Doctors of almost all specialties have to deal with the problem of pain and its relief. According to the literature, almost 30 million people daily take analgesics from the group of non-opioid analgesics, but in more than half of them 4-6 hours after taking the medication, the severity of pain is unchanged. Objective. to search for the most active molecules potential selective inhibitors of the TRPA1 ion channel with further investigation of their pharmacodynamic effects, toxicological safety, pharmacokinetic parameters and organ distribution, as well as to assess their impact on the psychoemotional state, general locomotor activity levels and anxiety in laboratory animals. Materials and methods. According to the results of in vitro tests, the most active molecule under code ZC02-0012 was selected from the pool of candidates. Further its analgesic activity was evaluated using an acetic acid-induced writhing test and a hot plate test; its anti-inflammatory activity was studied in the acute exudative paw edema model; in the open field and elevated plus-maze tests the influence of ZC02-0012 on the general locomotor activity levels and the anxiety of the laboratory animals was studied. The pharmacokinetic parameters and organ distribution of the substance ZC02-0012 were studied using a liquid chromatograph with an operating pressure range of 0-60 mPa (Thermo Scientific Dionex UltiMate 3000). Results and discussion. According to the results of in vitro tests, it was found that IC50 of the TRPA1 selective inhibitor under laboratory code ZC02-0012 was 91.3 nmol. The preclinical studies showed that ZC02-0012 possessed pronounced analgesic and anti-inflammatory activities and absence of the influence on the behavior and anxiety of the laboratory animals. Absolute bioavailability of ZC02-0012 in rabbits was 47%, while ZC02-0012 was intensely distributed into organs and tissues with a high level of blood circulation. The highest content of ZC02-0012 is typical of liver, kidneys and lungs, the lowest – for muscle tissue. Most of the substance is undergone rapid biotransformation and excreted as metabolites.

RETRACTED ARTICLEThe article describes arginase’s role in pathogenesis of endothelial dysfunction and a number of cardio-vascular diseases. Arginase catalyzes the hydrolysis of L-arginine, the substrate for nitric oxide synthesis, to L-ornithine and urea. Two isoforms of arginase were found in the human organism. Arginase I is located in the cells cytoplasm and is predominantly expressed in the liver. Arginase II is a mitochondrial protein that is expressed in the kidney, prostatic gland and vascular wall. Arginase II hydrolyzes L-arginine, thereby reducing the synthesis of nitric oxide and leading to the development of endothelial dysfunction and a number of cardio-vascular disorders. Arginase is a promising pharmacological target in the treatment of endothelial dysfunction and a number of cardio-vascular diseases, though the development of highly-selective arginase II inhibitors is still a difficult task.

Aim. To study the antidiarrhoeal activity of montmorillonite-based enterosorbent on the model of serotonin-induced diarrhea.Materials and methods. The study was performed on laboratory mice of both genders, acute diarrhea was induced by intraperitoneal injection of serotonin hydrochloride at a dose of 0.32 mg/kg, enterosorbent as an aqueous suspension was administered orally in a wide range of doses 30 minutes prior to serotonin administration. Within 4 hours, the time of diarrhea onset, the number of defecations, the fluid content in the fecal masses was considered. Morphological examination of the small intestine was carried out. Results. The administration of serotonin led to the development of diarrhea in 100% of animals in 12,8±1,2 minutes, the number of defecations increased 2,5 times compared to intact animals and was 19,5±0,5 times within 4 hours, the fecal masses were predominantly wet and liquid. The use of enterosorbent under the Crim_04 cipher in the maximum dose led to a delay in the development of diarrhea to 73,6±4,1 minutes, a reduction in the number of defecations to 9,4±0,1 and a significant inspissation of stool. The antidiarrhoeal effect of enterosorbent was confirmed morphologically.Conclusions. Montmorillonite-based enterosorbent under the laboratory cipher Crim_04 has a dose-dependent antidiarrhoeal activity in the modeling of serotonin-induced diarrhea.

They researched endothelioprotective and cardioprotective activity of arginase II selective inhibitor (substance code ZB49-0010C) in model of L-NAME-induced deficit of nitric oxide. The results of studies of arginase II selective inhibitor (substance code ZB49-0010C) show the presence dose-dependent endothelioprotective and cardioprotective activity, the severity of which sincreases with increasing dose.