Biotechnologia Acta

5-28

Authors: O. M. Klyuchko

The newest biotechnical systems for environment ecological monitoring based on the use of modern information and computer technologies and existing databases of chemical substances have been analyzed. In particular, there were observed such modern biophysical research methods as imitation and program modeling, based on the author results obtained in the experiments with registration of chemo-sensitive transmembrane electric currents in neurons in voltage clamp mode, use of neuronal fluorescent markers and accounting of organisms-bioindicators. The developed systems and methods allow revealing and identification of substances hazardous to living organisms and to make conclusions about their possible biological effects. The functioning of biotechnical information systems for environmental monitoring was analyzed in a wide time ranges, using modern databases, expert subsystems and interfaces capable to identify different types of chemicals. It is shown that for such systematic environmental monitoring it is possible to study and predict the effects of substances influences for a long time ¾ from the first moments of their exposure to individual cells of organism to months and years after exposure to the whole organism.

30-57

Authors: T. P. Pirog, D. A. Lutsay, L. V. Kliuchka, K. A. Beregova

The recent literature data about the antibacterial and antifungal activity of microbial surfactants (lipopeptides synthesized by representatives of genera Bacillus, Paenibacillus, Pseudomonas, Brevibacillus, rhamnolipids of bacteria Pseudomonas, Burkholderia, Lysinibacillus sp., sophorolipids of yeasts Candida (Starmerella) and Rhodotorula), and our own experiments data concerning antimicrobial activity of surfactants synthesized by Acinetobacter calcoaceticus IMB B-7241, Rhodococcus erythropolis IMB Aс-5017 and Nocardia vaccini IMV B-7405 were presented. The analysis showed that lipopeptides were more effective antimicrobial agents compared to glycolipids. Thus, the minimum inhibitory concentrations (MIC) of lipopeptides, ramnolipids and sophorolipids are on average (μg/ml): 1–32, 50–500, and 10–200, respectively. The MIC of surfactants synthesized by the IMV B-7241, IMV Ac-5017 and IMV B-7405 strains are comparable to those of the known microbial lipopeptides and glycolipids. The advantages of glycolipids as antimicrobial agents compared with lipopeptides were the possibility of their synthesis on industrial waste and the high concentration of synthesized surfactants. The literature data and our own results indicate the need to study the influence of microbes’ cultivation conditions on the antimicrobial activity of the final product.

66-74

Authors: N. V. Dziubenko, H. M. Kuznietsova, O. V. Lynchak, V. K. Rybalchenko

Aim of the work was to investigate the suspended C60-fulleren effect on liver and pancreas state under intraperitoneal and intragastrial administration on rat experimental cholangitis model. Acute cholangitis was simulated by a single ingestion of ɑ-naphthyl isothiocyanate — ANIT. C60-fullerene aqueous colloid solution (C60FAS, 0.15 mg/ml) was administered to animals at a volume containing C60-fullerenes at a dose of 0.5 mg/kg body weight in 24 and 48 h after ANIT administration. After72 h of the experiment, the animals were euthanized. Blood serum ALT and AST activities were measured, the liver and pancreas states were analyzed by light-microscopy level. It was found that intragastrial and intraperitoneal administration of C60FAS contributes to the correction of negative effects in the liver and pancreas caused by the induction of acute cholangitis. This was proved by the normalization of ALT activity, reduction of pancreatic parenchymal edema and liver fibrosis, and increased blood flow in these organs. Application of C60FAS could improve the state of the liver and pancreas under acute cholangitis in rats.

81-85

Authors: A. V. Zlatska, I. M. Gordiienko, D. О. Zubov, R. G. Vasyliev, S. N. Novikova

The aim of the study was to investigate the level of estrogen (ESR1, ESR2) and progesterone (PGR) receptors expression in the primary culture of endometrial multipotent mesenchymal stromal/stem cells endometrial multipotent mesenchymal stem cells and during in vitro cultivation under different athmospheric oxygen content. The dynamics of changes in the level of expression of the sex hormones receptors in the primary culture and during cultivation under different oxygen content in the athmosphere was shown.