Sorption Properties of Polymeric Enterosorbent and Its Specific Modified Analogue in Simulated Cholera Toxin Solutions <I>in vitro</I>

Carried out was comparative study of the sorption properties in polymeric enterosorbent - chitosan, and its specific modified analogue obtained through absorption of anti-toxin immunoglobulins onto the soluble chitosan template. It is determined that soluble chitosan and its specific counterpart express high sorption activity in relation to cholera toxin, thus making lower its initial concentrations. Equilibrium adsorption capacity of the chitosan and its modified variant increase with the raise of initial cholera toxin concentration in the solution. Cholera toxin extraction rate was identified under static conditions. Adsorbate substance recovery rate was registered in the progression. In the course of experiments proved was modified sorbent specific sorption efficiency, occasioned by the presence of the active component in the analogue composition - namely, anti-toxic anticholeraic immunoglobulins. The data obtained are of the importance for further development of specific anticholeraic enterosorbent

Quantum analogue of the spin-flop transition for a spin pair

Quantum (step-like) magnetization curves are studies for a spin pair with antiferromagnetic coupling in the presence of a magnetic field parallel to the easy axis of the magnetic anisotropy. The consideration is done both analytically and numerically for a wide range of the anisotropy constants and spins up to $S \gtrsim 100$. Depending on the origin of the anisotropy (exchange or single-ion), the magnetization curve can demonstrate the jumps more than unity and the concentration of the unit jumps in a narrow range of the field. We also point the region of the problem parameters, where the behavior is quasiclassical for $S = 5$, and where system is substantially quantum in the limit $S \to \infty$.Comment: 5 pages, 5 figure

Prospective Sorption Matrices for Antitoxic Cholera Enterosorbent Constructing

Demonstrated is the possibility of constructing of oral anti-cholera preparations based on sorption matrices with immobilized specific ligand. Various enterosorbents (activated charcoal, polysorb, polyfepan, and chitosan) have been used as sorption matrices, cholera antitoxic immunoglobulins (ATIg) – as specific ligands. Toxin-neutralizing activity of the ATIg immobilized on polysorb has been observed in vivo in 1:64000 dilutions and that of ATIg immobilized on activated charcoal, polyfepan, and chitosan – in 1:32000. Their specific activity in vitro has been defined in dot-blot immunoassay in 1:10000 and 1:5000 dilutions, respectively. High toxin-neutralizing activity, as well as specific one has proved the suitability of all tested matrices for antitoxic cholera enterosorbents constructing. However, polysorb and chitosan are accepted to be the most prospective matrices in view of the studied characteristics and properties. To stabilize the properties of the obtained experimental prototype sorbents, AT/Ig-polysorb and AT/Ig-chitosan, applied has been the method of liophilisation with glycocol stabilizer. Dried samples retain their original biological properties

The Social Significance of the Cluster in the Economy

Transition of the Russian Federation's policy to the innovative way of economic and social development is indispensable imperative to ensure its output to a leading position in the modern globalized world. Among the wide range of means, methods, forms, the mechanisms by which it is possible sharp acceleration of the process of formation of an innovative economy in our country, a special place belongs to the cluster approach. International scientific community is justified, and the practice of developed countries proved that the cluster approach to the structuring of the national economy and regional systems are an important source to improve production efficiency, increase its competitiveness, and increase public welfare. Questions of cluster formation and management of the development of the Russian economy in recent years, becomes the subject of numerous studies by Russian scientists - economists. Cluster policies are becoming increasingly recognized in public authorities. Moreover, there are already official documents, which examine the content and direction of the cluster policy. Keywords: society, cluster, economy, innovation, importance, competitiveness JEL Classifications: A19, O35, O3

NEW WAY OF ISOLATION OF ENZYME COMPLEX OF CHOLERA VIBRIO - PROTEOVIBRIN BY MEANS OF ULTRAFILTRATION

The technology of isolation of the cholera vibrio complex of low-molecular enzymes related to pathogenicity factors, from cholera vaccine production wastes by means of concentrating ultrafiltration was developed. This technology allows to obtain standard series of the preparation termed proteovibrin which is free from the basic Vibrio cholerae immunogen - O-antigen, and possesses high activity of protease and. phospholipases A2 and. C. It is shown that proteovibrin is highly soluble in water and 0.14 molar NaCl solution, causes the production of antibodies in rabbits and is toxic for white mice. Its further examination seems to be promising, as well as its possible use as additional source of the cholera vibrio enzymes and. as tripsin-like preparation, applicable for protein raw material hydrolysis in production of microbiological nutrient media

Alternative approach to electromagnetic field quantization in nonlinear and inhomogeneous media

A simple approach is proposed for the quantization of the electromagnetic field in nonlinear and inhomogeneous media. Given the dielectric function and nonlinear susceptibilities, the Hamiltonian of the electromagnetic field is determined completely by this quantization method. From Heisenberg's equations we derive Maxwell's equations for the field operators. When the nonlinearity goes to zero, this quantization method returns to the generalized canonical quantization procedure for linear inhomogeneous media [Phys. Rev. A, 43, 467, 1991]. The explicit Hamiltonians for the second-order and third-order nonlinear quasi-steady-state processes are obtained based on this quantization procedure.Comment: Corrections in references and introductio

Phosphatase Activity in Chemical Cholera Vaccine and its Components

Presented are the data on detection and characterization of phosphomonoesterase and phosphodiesterase activities in detoxicated cultural fluid of production Vibrio cholerae strains 569B and M41, and in choleragen-anatoxin and O-antigenic fraction, the vaccine components. These enzymes were demonstrated to be present in the cholera vaccine tablet, thus its biochemical properties were characterized more completely

Planning of Technological Development of New Products and Its Impact on the Economic Performance of the Enterprise

The market economy is characterized by competition of enterprises, defining the upgrade of production. Improvement of the economic activity of industrial enterprises implies development of new methods, forms and mechanisms of creation and mastering of new competitive products designed to ensure the predominant position of enterprises on domestic and foreign markets. Modern approaches to the creation and development of new competitive products high-tech require a huge amount of costs. But on the other hand it is the development of new products allows companies to survive in the current competitive environment. Planning for new products refers to the section of strategic planning. Therefore, the ability of the company to develop and introduce to the market its new product depends on its financial performance. A necessary step in production planning is the development of new products, representing a diverse set of processes and activities in the process which is carried out inspection and testing of structures and technologies to specified technical requirements, development of new forms of organization of production. During the development of new products are achieved the planned production volumes, scheduled economic indicators and technical and economic parameters of products. The period of development of new products begins with production of a prototype and ends with serial production. Keywords: innovation, innovation economy, economic indicators, new products, development of production JEL Classifications: O14, O21, O32, O3

DEVELOPMENT OF PHARMACEUTICAL DOSAGE FORM OF ANTI-CHOLERA IMMUNE-ENTEROSORBENT

Objective of the study is to experimentally substantiate the possibility of production of anti-cholera immune-enterosorbent in the pharmaceutical form of a pill.Materials and methods: experimental antitoxic immune-enterosorbent against cholera, stabilized using cool dehumidification. Residual moisture of enterosorbent lyophilizate was determined by means of Sartorius MA 150 moisture meter. Screen assay of the powders and granulates was performed applying the sieving of bulk material samples through screen set with sieve openings of various sizes. Specification of tap density was carried out with the help of SVM-10 unit. Granulation of specific enterosorbent was done using GPCG 2 LabSystem. The pills were manufactured in tablet press, MiniTabT. The hardness of the pallets was carried out by means of TBH 125 TD tester. The test for friability of the pills was performed in GTA 120.Results and conclusions. Utilization of cellulose microcrystalline and polyvinyl pyrolidone as pharmaceutical aids for granulation of lactose monohydrate is experimentally substantiated. It is established that the obtained granulate with passable values of technological parameters can serve as the basis for pharmaceutical dosage form of specific enterosorbent. Identified has been optimum mass of anti-cholera enterosorbent tablet cores. Demonstrated has been the possibility of Acryl-eze enteric coating application as protective shell of the pills. Studied has been specific activity of the pelleted enterosorbent in vitro, verified is its resistance capacity under conditions modeling gastrointestinal tract. In consequence of the performed trials and tests, technology for the production of antitoxic enterosorbent against cholera – enteric-coated tablet – has been developed. Long-term trials: the storage of the constructed preparation at 4–8°C within 24 months period (the observation time) – have revealed retention of enterosorbent activity, which testifies to its stability and defined the shelf life of specific tableted anti-cholera immune-enterosorbent

Results of Modeling Experiments in Designing Immuno-Enzyme Test-System for the Detection of Antibodies to <I>Yersinia pestis</I> F1 (ELISA-Ab-F1 <I>Yersinia pestis</I>)

Designed is immuno-enzyme test-system for the detection of antibodies to Yersinia pestis capsular antigen F1 – “ELISA-Ab-F1 Yersinia pestis”. On the model of laboratory mice it is demonstrated that this test-system is highly specific, its diagnostic titer being 1/320.Diagnostic value of the test-system is 83.3–88.9 % as revealed through investigations of sera and blood suspension samples, swabs of thoracic organs of animals, inoculated with live plague vaccine, strains of plague microbe, containing and deprived of pFra, as well as with heterologous bacteria