Metabolic shifts in subjects with potential risk of primary osteoarthritis

The Aim of the study was to estimate metabolic disorders in subjects with potential risk of primary knee osteoarthri-tis development. Material and Methods. The study included 27 patients: 10 men (37%), 17 women (63%) aged from 33 to 68 years, and 20 healthy people (8 men and 12 women). Traditional biochemical indexes characterizing certain metabolic aspects (total protein, urea, cholesterol, glucose, uric acid, amylase and bilirubin) were studied alongside with the assessment of articular cartilage state by the level of COMP (cartilage oligometric matrix protein), malondial-dehyde and ceruloplasmin. Results. In the course of our investigation we observed elevated COMP (Me=871,4 (792,2; 912,5)), malondialdehyde (Me=5,1 (4,7; 5,5)) and ceruloplasmin (Me=48,4 (41,2; 55,4)) levels. Conclusion. Negative metabolic shifts in the form of cartilage tissue metabolic disorders, activated lipid peroxidation and relative failure of body antioxidant system were observed in patients with potentially high risk of knee osteoarthritis without clinical manifestations of the disease.</p

Growth factors of fibroblasts and vascular en-dothelium in the early stages of knee osteoarthritis

Aim: to compare and study the relationship between the maintenance of vascular endothelial growth factor and acidic fibroblast growth factor in individuals with the initial clinical and radiological manifestations of the degeneration of the hyaline cartilage of the knee joints and healthy people. Material and Methods. 27 women with initial symptoms of knee osteoarthritis (main group, average age</p

Peculiarities of remodeling of hyalin cartilage at early stages of development of degenerative-distrophic processes of knee joints

The aim is to develop methods for detection of hyaline cartilage metabolic imbalance in patients with initial degenerative dystrophic changes in the substantiated pathogenetically knee. Material and Methods. Subject of inquiry: 50 women aged from 35 up to 57 (49.1 ±2.4), among them 36 patients with an early stage of knee osteoarthrosis made up an experimental group, 14 women without any musculoskeletal disease clinical presentations made up a control group. We carried out a complex examination including physical assessment, study of orthopaedic status, interview with the use of KOOS (Knee Injury and Osteoarthritis Outcome Score) scale, roentgenography and MRI of the knee and also a number of laboratory tests: enzyme-linked immunosorbent assay determination of the content of cytokine profile indices (IL-1, TNF-a, IL-6), cartilage oligomeric matrix protein (COMP) and bone (SerumCrossLaps and bone isozyme of alkaline phosphatase (BAP)) tissue metabolism markers in blood serum in all the groups of patients. Results. In all the patients of the experimental group the roentgenologic stage of osteoarthrosis was defined as 0-1 according to J. Lawrence and J. Kellgren, but at the same time knee degenerative changes were objectivized on the series of MR images in the form of MR signal changes of the articular cartilage, erosions and cysts, degenerative meniscus. We observed increased serum cartilage oligomeric matrix protein (COMP) in the same group and that is characteristic of hyaline cartilage destruction activation. We also detect disorders in bone tissue remodeling in the form of bone resorption intensification (Serum CrossLaps), osteogenesis increase (BAP) and activation of proinflammatory cytokine system link (IL-1, TNF-a). Conclusion. The leading pathogenetic links of the early degenerative changes of the knee are hyperproduction of proinflammatory cytokines (IL-1, TNF-a), destruction of the hyaline cartilage and disorder in bone tissue remodeling. Assessment of biochemical predictors of cartilage and bone tissue degradation along with the instrumental methods of diagnosis is of great theoretical and practical importance in the system of early detection of incipient osteoarthrosis.</p

23rd IAEA Fusion Energy Conference: summary of sessions EX/C and ICC

An overview is given of recent experimental results in the areas of innovative confinement concepts, operational scenarios and confinement experiments as presented at the 2010 IAEA Fusion Energy Conference. Important new findings are presented from fusion devices worldwide, with a strong focus towards the scientific and technical issues associated with ITER and W7-X devices, presently under construction

Theoretical substantiation of model of safety system of self-propelled transport vehicles

The proposed security model of the system of self-propelled transport vehicles that allow variables to take into account random factors that affect the probability of collision of cars by reducing levels of dangerous and harmful production factors and of injury to the operators presented in the form of a double-probability model

УРОВЕНЬ ЭНДОТЕЛИАЛЬНЫХ ПРОГЕНИТОРНЫХ КЛЕТОК У БОЛЬНЫХ С ИШЕМИЧЕСКИМ ИНСУЛЬТОМ И ЭФФЕКТИВНОСТЬ РЕАБИЛИТАЦИИ

Background: Early diagnosis of stroke, its treatment and rehabilitation are considered priorities in the state health care policy. Pharmacological intervention is used as a strategy to protect the neurons from the ischemic penumbra. Aim: To evaluate changes of functional state and levels of endothelial progenitor cells (EPC) in the circulation in ischemic stroke patients under administration of citicoline.Materials and methods: We assessed 11 patients in their early rehabilitation period of ischemic stroke (9 men and 2 women, mean age 58.4 ± 9.2 years). Patients from group 1 (n = 7) were given citicoline at dose 2000 mg/daily for 14 days, whereas patients from group 2 (n = 4) received regular treatment. Two healthy volunteers served as a control group. Circulatory EPC phenotype was assessed by multicolor laser flow cytometry and monoclonal antibody assay. Stroke severity and functional abilities were measured with NIHSS, Rankin scale and Rivermead mobility index.Results: Patients with ischemic stroke had decreased levels of early EPC, compared to healthy subjects. After 7 days of treatment in the group 1, there was a significant increase of circulatory EPC expressing VEGFR2+ up to 25.5 ± 20.9%, as well as an increase of early EPC numbers (CD117+ / CD133+) up to 18.8 ± 14.6%, compared to their respective baseline levels (21.9 ± 19.2 and 9.4 ± 5.4%) and compared to respective parameters in the group 2 (8.1 ± 2.7 and 5.5 ± 3.4%). In the group 1, severity of stroke and functional ability at baseline and at day 7 were as follows: NIHSS scores, 5.8 ± 4.9 and 3.5 ± 0.7, Rankin scale scores, 2.7 ± 1.3 and 2.3 ± 0.5, Rivermead mobility index, 8.8 ± 4.9 and 9.4 ± 4.8, respectively. In the group 2 corresponding parameters scored as 4.5 ± 2.3 and 3.3 ± 0.5, 2.5 ± 0.6 and 2.5 ± 0.4, 12.5 ± 1.3 and 12.7 ± 0.7, respectively.Conclusion: Treatment with citicoline in acute ischemic stroke promoted almost a 2-fold increase in early EPC levels. A decrease in neurologic deficiency and an improvement of functional status of patients with ischemic stroke were observed.Актуальность. Ранняя диагностика инсульта, лечение и реабилитация больных отнесены к приоритетным направлениям государственной политики в области здравоохранения. В качестве стратегии защиты нейронов зоны «ишемической полутени» используется фармакологическая интервенция.Цель – оценить у больных с ишемическим инсультом динамику их функционального состояния и уровня циркулирующих эндотелиальных клеток-предшественников (ЭКП) при назначении цитиколина.Материал и методы. Обследованы 11 пациентов в раннем восстановительном периоде ишемического инсульта (из них 9 мужчин и 2 женщины, средний возраст – 58,4 ± 9,2 года). Пациенты 1-й группы (n = 7) получали препарат цитиколин в дозе 2000 мг/сут в течение 14 дней, пациентам 2-й группы (n = 4) проводилась базисная терапия. Двое здоровых добровольцев составили контрольную группу. С помощью метода многоцветной лазерной проточной цитометрии и набора моноклональных антител был изучен фенотип циркулирующих ЭКП. Оценка тяжести инсульта и функционального состояния пациентов проводилась по шкалам NIHSS, Рэнкина и индексу мобильности Ривермид.Результаты. У больных с ишемическим инсультом отмечено снижение содержания ранних ЭКП по сравнению со здоровыми лицами. Через 7 суток лечения у пациентов 1-й группы зарегистрировано значительное повышение количества циркулирующих ЭКП, экспрессирующих VEGFR2+, – до 25,5 ± 20,9%, а также увеличение числа ранних ЭКП (CD117+ / CD133+) – до 18,8 ± 14,6% – по сравнению с исходным уровнем (21,9 ± 19,2 и 9,4 ± 5,4% соответственно) и по сравнению с пациентами 2-й группы (8,1 ± 2,7 и 5,5 ± 3,4% соответственно). В 1-й группе оценка тяжести инсульта и функционального состояния исходно и на 7-е сутки составляла по шкале NIHSS 5,8 ± 4,9 и 3,5 ± 0,7 балла, по шкале Рэнкина 2,7 ± 1,3 и 2,3 ± 0,5 балла, индекс мобильности Ривермид 8,8 ± 4,9 и 9,4 ± 4,8 соответственно; во 2-й группе – 4,5 ± 2,3 и 3,3 ± 0,5; 2,5 ± 0,6 и 2,5 ± 0,4; 12,5 ± 1,3 и 12,7 ± 0,7 соответственно.Заключение. Терапия цитиколином в остром периоде ишемического инсульта способствовала повышению содержания ранних предшественников ЭКП почти вдвое. Отмечены снижение уровня неврологического дефицита и улучшение функционального состояния пациентов с ишемическим инсультом

Ways to improve the safety of operators of self-propelled vehicles

In order to manage the safety of work of operators of self-propelled transport machines (STM) proposed a security model of STM in the form of a two-unit probabilistic model, which allows for semi-optimum parameters of the speed limit and to increase the reliability of protection of workers through the use of the proposed technical device