Clinical Experience of Luminescent Diagnostics of Precancerous Diseases and Cervical Cancer

The article summarizes the experience of using luminescent diagnostics with the use of ytterbium porphyrin complexes in gynecology and oncology. A pharmaceutical composition based on the Yb complex of 2,4-dimethoxyhematoporphyrin IX was used as the luminescent markers within the infrared range. The determination of luminescence characteristics (luminescence intensity) was carried out using a laserfiber fluorimeter in the range of 900-1100 nm. A new method for diagnosis of cervical disease has been proposed. The method of luminescent diagnostics allows to conduct a survey of a large number of patients in a short time. The method of luminescent diagnostics using the ytterbium complexes of porphyrins is not invasive. The method can be used as a screening. Differences between normal and pathologically altered cervical tissue have been identified and differences between pathological changes in the cervix HSIL (CIN II, CIN III) and cervical cancer are reliable. Keywords: Cervical cancer, squamous cell carcinoma, diagnosis of cervical cancer, squamous intraepithelial lesions of high grade – HSIL, luminescent diagnostics, luminescing in the near infrared (NIR) spectral region, porphyrins, ytterbium complexes of porphyrins

Constructions of regular algebras Lpw(G)L_p^w(G)

Criterion of (Shilov) regularity for weighted algebras $L_1^w(G)$ on a locally compact abelian group $G$ is known by works of Beurling (1949) and Domar (1956). In the present paper this criterion is extended to translation invariant weighted algebras $L_p^w(G)$ with $p>1$. Regular algebras $L_p^w(G)$ are constructed on any sigma-compact abelian group $G$. It was proved earlier by the author that sigma-compactness is necessary (in the abelian case) for the existence of weighted algebras $L_p^w(G)$ with $p>1$.Comment: Submitted to Mat. Sborni

RESEARCH OF THE DYNAMICS OF NON-DIFFRACTION AIRY SECTION PULSES IN THE ENVIRONMENT OF CARBON NANOTUBES

The problem of the propagation dynamics of optical pulses (light bullets) with an Airy profile in an inhomogeneous medium of carbon nanotubes is considered. It is shown numeri-cally that the proposed type of beam exhibits a steady and stable propagation

The study of the sorghum genetic diversity using the mul¬tiplex microsatellite analysis

This study is focused on evaluation of the genetic structure and diversity of the national sorghum collection. Analyzing the genetic diversity of crop species is of great importance for genetic resources management and food security of any country. Huge genetic diversity of sorghum provides a great opportunity to improve the agronomic characteristics of this crop. The efficiency of microsatellite  analysis has been demonstrated in many studies on the genetic diversity of different races and geographical groups of sorghum plants. Development of multiplex PCR analysis systems based on a set of polymorphic microsatellite loci will facilitate genetic tests on a large number of plant samples, thus making the research on sorghum diversity more efficient and comprehensive. A system of multiplex PCR analysis based on 12 polymorphic microsatellite loci was developed to perform single-stage high-throughput screening of cultivated and wild forms preserved in the sorghum germplasm collection. As a result of the microsatellite analysis of 200 sorghum plants, 229 alleles were detected. The studied loci showed high polymorphism. More than 17 alleles were identified in most loci, their polymorphic index content (PIC) ranging from 0.694 to 0.954. The value of the effective multiplex ratio (EMR) in the developed system was estimated at 0.833. The microsatellite analysis of sorghum accessions resulted in obtaining quantized gene expressions profiles, with a DNA profile for each accession, and revealed significant polymorphism among the plants of different sorghum varieties (races). The developed multiplex PCR system was shown to be efficient for evaluation of the genetic diversity and genetic relationships of sorghum plants from different races. The analysis of the obtained data using three bioinformatic techniques, NJ cluster analysis, PCoA, and the Bayesian model-based clustering, helped to classify the analyzed sorghum accessions into cluster groups according to their morphological and agronomic traits

Тромбоэкстракция при ишемическом инсульте у пациента с выраженной сопутствующей патологией

The clinical case reports the first experience of thrombus extraction in a young patient with ischemic stroke and severe concomitant pathology. The 33-year old patient was admitted to the hospital with stroke 4 hours after its onset. The occlusion of the distal Ml segment of the left middle cerebral artery was documented with MSCT. A satisfactory clinical result of the thrombus extraction in ischemic stroke was achieved, despite the changed treatment strategy commonly used for from this pathology (thrombolytic therapy and thrombus extraction). The refusal of thrombolytic therapy was associated with the presence of destructive pulmonary tuberculosis and a high risk of pulmonary hemorrhage. Successful thrombus extraction from the M1 segment of the left middle cerebral artery segment with the final blood flow in the left internal carotid artery at the level of TICI III was performed. At discharge the patient demonstrated improved neurological status with the modified Rankin score of 3.Представлено описание первого опыта тромбоэкстракции при ишемическом инсульте у молодого пациента с выраженной сопутствующей патологией. Пациент 33 лет с давностью развития клиники ОНМК в течение 4 часов. По МСКТ задокументирована окклюзия дистального М1 сегмента левой средней мозговой артерии. Получен удовлетворительный клинический результат тромбоэкстракции при ишемическом инсульте, несмотря на отход от стандарта лечения данной патологии (тромболитическая терапия и тромбоэкстракция). Отказ от проведения тромболитической терапии был связан с наличием туберкулеза легких в фазе распада и высокой вероятностью развития легочного кровотечения. Выполнена успешная тромбоэкстракция из бассейна M1 сегмента левой средней мозговой артерии с финальным кровотоком по левой внутренней сонной артерии на уровне TICIIII. На момент выписки отмечается положительная динамика в неврологическом статусе со степенью инвалидизации по модифицированной шкале Рэнкина в 3 балла

Relative luminosity measurement of the LHC with the ATLAS forward calorimeter

In this paper it is shown that a measurement of the relative luminosity changes at the LHC may be obtained by analysing the currents drawn from the high voltage power supplies of the electromagnetic section of the forward calorimeter of the ATLAS detector. The method was verified with a reproduction of a small section of the ATLAS forward calorimeter using proton beams of known beam energies and variable intensities at the U-70 accelerator at IHEP in Protvino, Russia. The experimental setup and the data taking during a test beam run in April 2008 are described in detail. A comparison of the measured high voltage currents with reference measurements from beam intensity monitors shows a linear dependence on the beam intensity. The non-linearities are measured to be less than 0.5 % combining statistical and systematic uncertainties.Comment: 16 page

Management of Epizootiological Investigation in the Context of Mass Event (by the Example of the XXVII Worldwide Summer Universiade in Kazan, 2013)

In consequence of epizootiological investigation, differentiated has been Kazan territory according to the potential epidemic hazard levels; determined is the abundance of carriers and vectors of natural-focal infection agents in and around the territory of the Summer Universiade-2013; substantiated is the scope of preventive measures (disinfection, deratization, desinsection), as well as their frequency and coverage area. Timely detection of the regions with expressed epizootic potential growth has made it possible to carry out prophylactic activities and reach an epidemic-hazard-lowering effect as regards particular territories of the natural and anthropourgic infectious disease foci. Further on, validated has been disinfection as part of specific prophylaxis and as a basic measure for elimination of risks of the population exposure to natural-focal infections directly during the mass event

Role of Mosquitoes, <I>Culex</I> <I>pipiens</I> Complex, in West Nile Fever Virus Persistence in Urbanized Biocoenoses of Saratov

. In wiggler samples as well as in imago ones detected are WNF virus markers, which indicate the possibility of transovarial and trans-phase transmission of virus into mosquito populations, habitant in urbanized biocoenoses. It is substantiated that Culex pipiens female mosquitoes, which reproduce autogenically, provide for the persistence of the virus within the inter-epidemic period. Therewith there is a possibility of sustained, epidemically-active WNF micro-foci to be formed in the residential area landscapes, and this issue should be given proper consideration when performing assessment of the risks associated with urban population exposure to the infection

Conditions for Virus Circulation and Premises for Natural West Nile Fever Foci Formation in the Territory of the Saratov Region

Local climate change (rise of mean temperatures and amount of precipitation, prolongation of frost-free season) triggers further distribution, and increase in numbers of animals – carriers and vectors of West Nile fever virus in the territory of the Saratov region. Based on the results of ecological-epizootiological monitoring (2006–2012) traced out have been the species composition, abundance dynamics, and character of distribution of birds habitant in aquatic and anthropogenic complexes, mosquitoes and Ixodidae ticks. Investigated are possible causes of West Nile fever nosoarea expansion, related to ecology of migrating birds wintering in Africa. Persistent circulation of the virus in intra-zonal inundated biocoenosis facilitates formation of secondary natural foci of West Nile fever and factors into epidemic complications as regards this particularly dangerous vector-borne infection. On the basis of analytical data concerning hydrographic network density, fauna structure, population numbers of birds and mosquitoes – potential carriers and vectors of WNF, epizootiological and epidemiological surveillance, designed has been expectation-driven forecasting map chart which illustrates possibility of sustainable WNF foci formation in various territories of the Saratov region

Оценка гемодинамической значимости парапротезной фистулы после транскатетерной имплантации аортального клапана

Highlights. Using ECHO and MSCT data, a numerical assessment of hemodynamic effects of paraprosthetic regurgitation following transcatheter aortic valve replacement was performed. A significant increase in the fluid flow, wall and viscous shear stresses in the area of regurgitation is shown. The modeling technique described in the paper can be used prospectively in assessing the optimal treatment modality in terms of predicting the quantitative characteristics of the flow, associated with the risks of destruction of red blood cells and thrombosisAim. To make a numerical assessment of hemodynamic effects of paraprosthetic regurgitation following transcatheter aortic valve replacement based on retrospective clinical data.Methods. The study included echocardiography and multi-slice computed tomography data as input data for modeling one pulsation of a fluid similar in properties to blood. Reconstruction of the paraprosthetic fistula and the ascending aorta was performed in the Mimics medium (Materialise, Belgium). The obtained 3D models were processed in the Salome software (OPEN CASCADE SAS, France), after which they were exported to HELYX-OS (ENGYS, Great Britain) to build a finite element mesh. The flows were modeled using the OpenFOAM software package version 6 (The OpenFOAM Foundation Ltd, UK).Results. The simulation result, expressed quantitatively and qualitatively in the form of diagrams of the measured parameters – fluid flow velocities, wall and viscous shear stresses, shows a significant increase in indicators in the area of paraprosthetic regurgitation. Thus, the velocity in the affected area was 1.9–4.2 m/s, which is 3.8 higher than the average value in the entire computational area. The wall shear stress value was up to 61 Pa in the critical area, which may indicate an increased risk of thrombus formation due to the initiation of the clotting cascade through the von Willebrand factor. The value of viscous shear stress, the main component of the destruction of red blood cells in laminar flow, amounted to 20–26 Pa, which, in general, is not enough for mechanical hemolysis.Conclusion. The modeling technique described in the paper can be used prospectively in assessing the optimal treatment modality in terms of predicting the quantitative characteristics of the flow, associated with the risks of destruction of red blood cells and thrombosis.Основные положения. На основе реконструированных из данных МСКТ и реологических параметров кровотока, полученных из ЭхоКГ пациента, произведена численная оценка гемодинамических эффектов транскатетерной имплантации протеза аортального клапана для случая возникновения парапротезной регургитации. Показано значительное повышение показателей скоростей тока, пристеночного и вязкого сдвигового напряжений в области парапротезной регургитации. Представленный метод моделирования может быть использован проспективно при выборе оптимального подхода и оценке параметров протезирования с точки зрения прогноза количественных характеристик потока, связанных с рисками разрушения эритроцитов и тромбообразованием.Цель. Численная оценка гемодинамических эффектов транскатетерной имплантации протеза аортального клапана для случая возникновения парапротезной регургитации на основе ретроспективных клинических данных.Материалы и методы. В исследование включены данные функциональных методов исследования – эхокардиографии и компьютерной томографии в качестве входных данных для моделирования одной пульсации жидкости, аналогичной по свойствам крови. Реконструкцию парапротезной фистулы и восходящего отдела аорты проводили в среде Mimics (Materialise, Бельгия). Обработку полученных трехмерных моделей осуществляли в программном средстве Salome (OPEN CASCADE SAS, Франция), после чего экспортировали в HELYX-OS (ENGYS, Великобритания) для построения конечноэлементной сетки. Для моделирования потоков использовали программный комплекс OpenFOAM, версия 6 (The OpenFOAM Foundation Ltd, Великобритания).Результаты. Результат моделирования, выраженный количественно и качественно в виде эпюр измеряемых параметров – скоростей тока, пристеночного и вязкого сдвигового напряжений, демонстрирует значительное повышение показателей в области парапротезной регургитации. Так, скорости патологической области составили 1,9–4,2 м/с, что до 3,8 превышает средние значения расчетной области в целом. Значение пристеночного сдвигового напряжения составило до 61 Па в критической области, что может свидетельствовать    о повышенном риске образования тромбов за счет запуска свертывающего каскада через фактор фон Виллебранда. Значение вязкого сдвигового напряжения как основной компоненты разрушающего напряжения эритроцитов в случае ламинарного тока составило 19,1 Па, чего в целом недостаточно для механического гемолиза.Заключение. Описанная в работе методика моделирования может быть использована проспективно при оценке оптимального подхода и параметров протезирования с точки зрения прогноза количественных характеристик потока, связанных с рисками разрушения эритроцитов и тромбообразованием