DYNAMICS OF ACUTE CORONARY SYNDROME PATIENT MANAGEMENT IN NONIVASIVE PRIMARY VASCULAR CENTER (ACCORDING TO RECORD AND RECORD-2 REGISTERS)

Aim. To study changes in acute coronary syndrome (ACS) patient hospital management in nonivasive primary vascular center in 2007-2009. Material and methods. 188 (RECORD register data) and 180 (RECORD-2 register data) patients with ACS were admitted to the emergency cardiology department in November 2007 and November 2009, respectively. Results. Thrombolytic therapy was performed in 62 patients in 2009 whereas in 2007 no one patient received this therapy because of thrombolytic drugs absence. Only 39.4% of patients were treated with unfractionated heparin in 2007. In 2009 50% of patients received unfractionated heparin, 12.5% of patients – enoxaparin and 7.4% - fondaparinux. 2.7% of ACS patients were transferred to the regional vascular center in 2007 and 3.9% -  in 2009. Conclusion. Creation of the primary vascular center led to improvement of ACS patient hospital management, and move it closer to modern guidelines. However hospital lethality did not changed (3.3% and 3.7% in 2009 and 2007, respectively)

Retrogradely transported siRNA silences human mutant SOD1 in spinal cord motor neurons

The transgenic mouse model of familial amyotrophic lateral sclerosis (ALS) expressing human mutant (G93A) copper/zinc superoxide dismutase (SOD1) is an attractive model for studying the therapeutic effects of RNA interference (RNAi) because of the specific silencing of the mutant gene expression. We studied small interfering RNA (siRNA)-mediated down-regulation of human mutant G93A SOD1 gene in lumbar spinal cord of ALS mice. siRNA was applied onto the proximal nerve stump of severed sciatic nerves. One day after surgery the lumbar spinal cords were processed for RT-PCR examination. Treatment with specific siRNA resulted in 48% decrease in human SOD1 mRNA levels in lumbar spinal cord, but had no effect on the abundance of mouse ChAT and SNAP25 mRNAs which were used as randomly selected internal controls, the mark of a specific silencing of SOD1. Our findings demonstrate for the first time that siRNA, targeting mutant human SOD1 mRNA, is taken up by the sciatic nerve, retrogradely transported to the perikarya of motor neurons, and inhibits mutant SOD1 mRNA in G93A transgenic ALS mice. © 2009 Springer-Verlag

Subgap anomaly and above-energy-gap structure in chains of diffusive SNS junctions

We present the results of low-temperature transport measurements on chains of superconductor--normal-constriction--superconductor (SNS) junctions fabricated on the basis of superconducting PtSi film. A comparative study of the properties of the chains, consisting of 3 and 20 SNS junctions in series, and single SNS junctions reveals essential distinctions in the behavior of the current-voltage characteristics of the systems: (i) the gradual decrease of the effective suppression voltage for the excess conductivity observed at zero bias as the quantity of the SNS junctions increases, (ii) a rich fine structure on the dependences dV/dI-V at dc bias voltages higher than the superconducting gap and corresponding to some multiples of 2\Delta/e. A model to explain this above-energy-gap structure based on energy relaxation of electron via Cooper-pair-breaking in superconducting island connecting normal metal electrods is proposed.Comment: RevTex, 5 pages, 4 figure

Generation of recombinant adenoviruses and lentiviruses expressing angiogenic and neuroprotective factors using Gateway cloning technology

The critical aspect in gene and gene-cell therapy is to find an optimal vector - a carrier of genetic information. Viruses represent a natural biological system for gene transfer into eukaryotic cells. One of the most effective and proven vectors for delivery of recombinant nucleic acids into mammalian cells are adenoviruses and lentiviruses. In this study using the Gateway cloning we have constructed adenoviral and lentiviral vectors encoding angiogenic and neuroprotective factors: various isoforms of vascular endothelial growth factor vegf121, vegf165, vegf189; basic fibroblast growth factor fgf2; glial cell-derived neurotrophic factor gdnf. The efficiency of transduction of HEK293A cell line with generated recombinant viruses and expression of recombinant proteins were confirmed by immunofluorescent analysis

Superconductivity on the localization threshold and magnetic-field-tuned superconductor-insulator transition in TiN films

Temperature- and magnetic-field dependent measurements of the resistance of ultrathin superconducting TiN films are presented. The analysis of the temperature dependence of the zero field resistance indicates an underlying insulating behavior, when the contribution of Aslamasov-Larkin fluctuations is taken into account. This demonstrates the possibility of coexistence of the superconducting and insulating phases and of a direct transition from the one to the other. The scaling behavior of magnetic field data is in accordance with a superconductor-insulator transition (SIT) driven by quantum phase fluctuations in two-dimensional superconductor. The temperature dependence of the isomagnetic resistance data on the high-field side of the SIT has been analyzed and the presence of an insulating phase was confirmed. A transition from the insulating to a metallic phase is found at high magnetic fields, where the zero-temperature asymptotic value of the resistance being equal to h/e^2.Comment: 5 pages, 4 eps figures, RevTeX4, Published versio