Assessment of the effect of wave device application on morphological changes in organs and cells of irradiated animals

Aim: To study the effect of the Device for wave influence on biological objects on the prevention of the development of acute radiation sickness and chronic radiation syndrome in vivo. Materials and Methods: The studies were performed on white rats irradiated at a dose of 8 Gy. The experimental group of irradiated rats was treated with a wave Device (Patent of Ukraine No. 53568) once, for 2.5 min, 1.5 h after irradiation. Their organs were processed by standard histologic methods. Results: In the demagnetized rats, dystrophic changes in cells and tissues of liver, lungs, kidneys, brain, bone marrow and spleen were insignificant in 60 days compared to the control non-demagnetized group of animals. Conclusion: The Device reduced the magnetic charge of magneto-containing elements and their compounds in the organism of the irradiated animals, and decreased the formation of reactive oxygen species, which play a key role in the development of radiation-induced diseases

IGHV3-21 gene expression in patients with b-cell chronic lymphocytic leukemia in Ukraine

The aim of the study was to evaluate the frequency of IGHV3-21 gene usage and its clinical significance for patients with B-cell chronic lymphocytic leukemia (CLL) in Ukraine. Patients and Methods: Immunoglobulin variable heavy chain (IGHV) gene repertoire was studied in 189 CLL patients using reverse transcribed polymerase chain reaction and direct sequence of amplified products. Results: IGHV3-21 gene expression was found in 11 cases (5.8%), and its frequency was intermediate between Scandinavian (11.7%) and Mediterranean CLL (2.9%) cohorts. The most of cases (9 of 11) belonged to subset with heterogeneous HCDR3 (heteroHCDR3 subset), and only 2 cases – to subset with classical short ARDANGMDV motif (homHCDR3 subset). Six IGHV3-21 cases were mutated and 5 cases were unmutated. All unmutated cases (all were from heteroHCDR3 subset) had similarity of their HCDR3s with previously published sequences. The differences in overall (OS), progression-free (PFS) and treatment-free survival (TFS) for IGHV3-21 positive patients in comparison with CLL patients expressing the other IGHV genes were statistically insignificant. These survival parameters were comparable also for CLL patients with mutated IGHV3-21 gene usage and expression the others mutated IGHV genes. But remarkable feature of IGHV3-21 expressing patients was high incidence of solid tumors. They have developed in 4 IGHV3-21 positive cases (36.4%) and in 10 cases with expression of the others IGHV genes (5.6%, p = 0.0002). Furthermore, in small group of 6 patients with mutated IGHV3-21 gene expression, 3 patients had solid tumors and one underwent Richter transformation. Unmutated IGHV3-21 gene expressed patients had worse OS and PFS in comparison with CLL patients that expressed the others unmutated IGHV genes. Conclusion: Presented data are in agrement with the opinion about negative prognostic significance of IGHV3-21 gene expression regardless its mutation status. IGHV3-21 expression was associated with development of secondary solid tumors. Revealed high level of homology in heteroHDR3s subset might suggest about possible antigenic influence also, in addition to homHCDR3 subset that was proposed earlier.Цель: оценить частоту использования гена IGHV3-21 и его клиническое значение для больных B-клеточным хроническим лимфолейкозом (ХЛЛ) в Украине. Больные и методы исследования: репертуар генов вариабельных участков тяжелых цепей иммуноглобулинов (IGHV) изучали у 189 больных с ХЛЛ с помощью полимеразной цепной реакции на базе обратной транскрипции и прямого сиквенса амплифицированных продуктов. Результаты: экспрессия гена IGHV3-21 выявлена у 11 пациентов (5,8%), что занимает промежуточное положение между Скандинавской (11,7%) и Средиземноморской (2,9%) когортами. Большинство случаев (9 из 11) относились к подгруппе с гетерогенным третьим комплементарнымрегионом (heteroHCDR3 подгуппа) и только 2 случая — к подгруппе с коротким классическим ARDANGMDV мотивом (homHCDR уппа). есть IGHV3-21-позитивных случаев были мутированными и 5 — немутированными. Все немутированные случаи (все из heteroHCDR уппы) имели сходство HCDR3 с анее описанными последовательностями. Различия в общей выживаемости (OS), длительности периода до прогрессии заболевания (PFS) и начала лечения (TFS) для IGHV3-21-позитивных больных были статистически незначимы по сравнению с пациентами с ХЛЛ с экспрессией других IGHV-генов. Указанные параметры также сравнивали между больными ХЛЛ с экспрессией мутированных IGHV3-21- и других IGHV-генов. Отличительной чертой пациентов с экспрессией IGHV3-гена была высокая встречаемость солидных опухолей. Они развились в 4 IGHV3-21-позитивных случаях (36,4%) и в 10 случаях с экспрессией других IGHV-генов (5,6%, p = 0,0002). Кроме того, в небольшой группе больных (6) с экспрессией мутированного IGHV3-21-гена у 3 возникли солидные опухоли и 1 пациента — синдром Рихтера. У больных с экспрессией немутированного IGHV3-21-гена определяли худшие показатели OS и PFS по савнению с пациентами с экспрессией других немутированных IGHV-генов. Выводы: представленные данные согласуются с мнением о самостоятельном негативном прогностическом значении для больных с ХЛЛ экспрессии IGHV3-21-гена вне зависимости от его мутационного статуса. IGHV3-21-экспрессия была ассоциирована с развитием вторичных солидных опухолей. Выявленный высокий уровень гомологии в heteroHDR3s-подгруппе может свидетельствовать о возможном антигенном влиянии в дополнение к антигенному влиянию в homHCDR уппе, что было установлено ране

Application of a Convolutional Neural Network with a Module of Elementary Graphic Primitive Classifiers in the Problems of Recognition of Drawing Documentation and Transformation of 2d to 3d Models

his paper presents the results of the research related to the design of a convolutional neural network with a module of graphic primitives elementary classifiers (EC) in the tasks of drawing documentation recognition and transformation of the 2D into 3D models. An architecture of a convolutional neural network with an elementary classifiers module of graphic primitives was proposed for solving the drawing recognition and 2 → 3 transformation problem. A graphic image classifier model based on covered classes and elementary primitive classifiers has been developed to increase the effectiveness of CNN training

Новые публикации по судебной экспертизе

 This section presents translated abstracts of selected papers that appeared in the following periodicals: Forensic Science International  [www.elsevier.com/locate/forsciint], Forensic Science International: Digital Investigation [www.elsevier.com/locate/j.fsidi], Journal of Forensic Sciences [www.onlinelibrary.wiley.com] and Science & Justice [www.elsevier.com/locate/ scijus].  Представлены переводы рефератов избранных статей, опубликованных в зарубежных периодических изданиях: Forensic Science International [www.elsevier.com/locate/forsciint], Forensic Science International: Digital Investigation [www.elsevier.com/locate/j.fsidi], Journal of Forensic Sciences [www.onlinelibrary.wiley.com] и Science & Justice  [www.elsevier.com/locate/scijus].

Application of Game Theory, Fuzzy Logic and Neural Networks for Assessing Risks and Forecasting Rates of Digital Currency

In this scientific work is aimed to obtain mathematical tools for solving the problem of finding optimal investment strategies in digital cryptocurrencies (hereinafter referred to as the CX) or a CX set from the side of investor/investors were proposed. The solution was found on the basis of the application of the games theory, the theory of fuzzy sets and artificial neural networks (ANN). The developed model, which allows one to obtain an algorithm for the success forecast assessment of the investment procedure in the CX by the investor, which can be then implemented in one of the modules of the intellectual information system for the CX rates forecasting. The scientific novelty of the results is that for the first time to solve the problem of the CX market evaluation in the context of the CX investment problem, gaming approaches based on solving a bilinear quality game in fuzzy production, as well as ANN were used

РАДИОЛОГИЧЕСКИЕ И МЕДИЦИНСКИЕ ПОСЛЕДСТВИЯ ЧЕРНОБЫЛЬСКОЙ КАТАСТРОФЫ

From the position of a 25-years’ experience to overcome the health effects of Chernobyl the dynamics of the radiation environment, the first summarizing at the international level (1988), the results of completed research and practical monitoring are analyzed. Cohort of acute radiation syndrome (ARS) survivors under medical observation at the S.I. "Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine" is the largest. Within the 25 years the functional state of the major organs and body systems, and metabolic homeostasis for this category of persons were studied, a comprehensive assessment of their health, mental and physical performance were given, and risk factors and peculiarities of stochastic and non-stochastic pathology courses were identified, as well as a system of rehabilitation patients after ARS was developed. ARS survivors are suffering from chronic diseases of internal organs and systems (from 5-7 to 10-12 diagnoses at the same time). A correlation between acute radiation effects and specific HLA phenotypes were revealed. The dynamics of the immune system recovery after irradiation was studied. The role and prognostic value of telomere length and programmed cell death of lymphocytes in the formation of the cellular effects of ionizing radiation were determined for the first time. Differences between spontaneous and radiation-induced acute myeloid leukemias were found. Dose-dependent neuropsychiatric, neurophysiological, neuropsychological and neuroimaging deviations were identified after irradiation at doses above 0.3 Sv. It was shown that the lymphocytes of Chernobyl clean-up workers with doses 350 – 690 mGy can induce "the bystander effect" in the non-irradiated cells even after 19 years after exposure. The rates of cancer incidence and mortality of victims, the lessons and key problems to be solved in the third decade after the Chernobyl accident are considered.С позиций 25-летнего опыта преодоления медицинских последствий аварии на Чернобыльской АЭС проанализирована динамика радиационной обстановки, первые обобщения на международном уровне (1988 г.), итоги выполненных научных исследований и практического мониторинга. Когорта больных, перенесших ОЛБ и находящихся под диспансерным наблюдением в ГУ «Научный центр радиационной медицины НАМН Украины», в Украине остается самой многочисленной. За 25 лет изучено функциональное состояние основных органов и систем организма, метаболических процессов и гомеостаза у данной категории лиц; дана комплексная оценка состояния их здоровья, умственной и физической работоспособности, а также определены факторы риска развития и особенности течения стохастической и нестохастической патологии, разработана система реабилитации больных, перенесших острую лучевую болезнь (ОЛБ). Перенесшие ОЛБ и оставшиеся живыми страдают хроническими заболеваниями внутренних органов и систем (от 5–7 до 10–12 диагнозов одновременно). Выявлены коррелятивные связи между острым радиационным эффектом и определенными HLAфенотипами. Исследована динамика восстановления иммунной системы после облучения. Впервые установлены роль и прогностическое значение длины теломер и запрограммированной клеточной гибели лимфоцитов в формировании клеточных эффектов ионизирующего облучения. Найдены различия между спонтанными и радиационно-индуцированными острыми миелоидными лейкемиями. Дозозависимые нейропсихиатрические, нейрофизиологические, нейропсихологические и нейровизуализационные отклонения выявлены после облучения в дозах свыше 0,3 Зв. Показано, что лимфоциты участников ликвидации последствий аварии на ЧАЭС с дозами облучения 350–690 мГр способны индуцировать «эффект свидетеля» в необлученных клетках даже через 19 лет после воздействия радиации. Рассмотрены показатели онкологической заболеваемости, смертности пострадавших, уроки и основные проблемы для решения в третьем десятилетии после Чернобыльской катастрофы

Radiation and the Risk of Chronic Lymphocytic and Other Leukemias among Chornobyl Cleanup Workers

Background: Risks of most types of leukemia from exposure to acute high doses of ionizing radiation are well known, but risks associated with protracted exposures, as well as associations between radiation and chronic lymphocytic leukemia (CLL), are not clear.
 Objectives: We estimated relative risks of CLL and non-CLL from protracted exposures to low-dose ionizing radiation.
 Methods: A nested case–control study was conducted in a cohort of 110,645 Ukrainian cleanup workers of the 1986 Chornobyl nuclear power plant accident. Cases of incident leukemia diagnosed in 1986–2006 were confirmed by a panel of expert hematologists/hematopathologists. Controls were matched to cases on place of residence and year of birth. We estimated individual bone marrow radiation doses by the Realistic Analytical Dose Reconstruction with Uncertainty Estimation (RADRUE) method. We then used a conditional logistic regression model to estimate excess relative risk of leukemia per gray (ERR/Gy) of radiation dose.
 Results: We found a significant linear dose response for all leukemia [137 cases, ERR/Gy = 1.26 (95% CI: 0.03, 3.58]. There were nonsignificant positive dose responses for both CLL and non-CLL (ERR/Gy = 0.76 and 1.87, respectively). In our primary analysis excluding 20 cases with direct in-person interviews less than 2 years from start of chemotherapy with an anomalous finding of ERR/Gy = –0.47 (95% CI: less than –0.47, 1.02), the ERR/Gy for the remaining 117 cases was 2.38 (95% CI: 0.49, 5.87). For CLL, the ERR/Gy was 2.58 (95% CI: 0.02, 8.43), and for non-CLL, ERR/Gy was 2.21 (95% CI: 0.05, 7.61). Altogether, 16% of leukemia cases (18% of CLL, 15% of non-CLL) were attributed to radiation exposure.
 Conclusions: Exposure to low doses and to low dose-rates of radiation from post-Chornobyl cleanup work was associated with a significant increase in risk of leukemia, which was statistically consistent with estimates for the Japanese atomic bomb survivors. Based on the primary analysis, we conclude that CLL and non-CLL are both radiosensitive.

ASSESSMENT OF THE EFFECT OF WAVE DEVICE APPLICATION ON MORPHOLOGICAL CHANGES IN ORGANS AND CELLS OF IRRADIATED ANIMALS

Aim: To study the effect of the Device for wave influence on biological objects on the prevention of the development of acute radiation sickness and chronic radiation syndrome in vivo. Materials and Methods: The studies were performed on white rats irradiated at a dose of 8 Gy. The experimental group of irradiated rats was treated with a wave Device (Patent of Ukraine No. 53568) once, for 2.5 min, 1.5 h after irradiation. Their organs were processed by standard histologic methods. Results: In the demagnetized rats, dystrophic changes in cells and tissues of liver, lungs, kidneys, brain, bone marrow and spleen were insignificant in 60 days compared to the control non-demagnetized group of animals. Conclusion: The Device reduced the magnetic charge of magneto-containing elements and their compounds in the organism of the irradiated animals, and decreased the formation of reactive oxygen species, which play a key role in the development of radiation-induced diseases