6 research outputs found

    Провоспалительная активность бронхоальвеолярной лаважной жидкости при обострении хронических заболеваний легких

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    Pro-inflammatory activity of broncho-alveolar lavage fluid (BALF) was investigated in 93 patients with exacerbations of chronic lung diseases using biological test-systems — donor blood and experimental animals (mice). Previously the BALF supernatants were decontaminated by millipore filtration. At the first investigation way BALF was added to the donor blood and examined in nitroblue tetrasolinium reduction test. Hanks’ balanced saline solution was used in the control test instead of BALF. The pro-inflammatory BALF effect was determined as the ratio of diformasan-positive neutrophile percentages in experimental and control groups (stimulation index — SI). At the second way BALF was injected into mice’ trachea. Then mice’ lungs were lavaged in 24 hours. Polymorphnonuclear leucosytes percentage in mice BALF was estimated as a value of the pro-inflamm atory BALF activity in patients (or chemotactic activity, CA). Patients BALF with low inflammatory activity was found to inhibit nitroblue tetrasolinium reduction test with donor blood neutrophiles (S K 1.0) and to stimulate slightly polymorphnonuclear leucosytes migration in respiratory system of recipient mice (CA<10%). On the contrary, BALF in patients with high inflammatory activity was found to stimulate these parameters intensively (Sl>1.5; CA>20%). Thus, our findings suggest that the values of pro-inflammatory BALF activity allow to estimate chronic lung diseases activity and to predict possible complications.У 93 пациентов с обострением хронических заболеваний легких исследовалась провоспалительная активность бронхоальвеолярного смыва (БАС) при использовании биологических тест-систем — донорской крови и экспериментальных животных (мышей). Супернатант БАС предварительно очищали фильтрацией через миллипоры. В первом варианте исследования лаважную жидкость добавляли к донорской крови и ставили тест восстановления нитросинего тетразолиния. В контроле применяли сбалансированный солевой раствор Хенкса. Провоспалительный эффект бронхоальвеолярного смыва определяли как соотношение содержания диформазан-положительных нейтрофилов в экспериментальной и контрольной группах (индекс стимуляции — ИС). Во втором варианте БАС вводили в трахею мышей и через 24 часа проводили бронхоальвеолярный лаваж. За показатель провоспалительной активности БАС пациентов принимали процент полиморфно-ядерных лейкоцитов лаважной жидкости (хемотоксическая активность, ХА). БАС больных с низкой воспалительной активностью подавлял реакцию восстановления нитросинего тетразолиния нейтрофилами донорской крови (ИС<1,0) и слегка стимулировал миграцию полиморфно-ядерных нейтрофилов в респираторную систему мышей-реципиентов (ХА<10%). Напротив, БАС больных с высокой активностью воспаления стимулировал эти параметры более интенсивно (ИС>1,5; ХА>20%). Таким образом, наши исследования позволяют предположить, что оценивая противовоспалительную активность бронхоальвеолярных смывов, можно определять степень активности хронических заболеваний легких и прогнозировать возможные осложнения

    Animals’ population on the glades of electric power line-500 kw in fir and pine formations of the southern taiga

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    The test groups of animals showed different reaction on the presence of electric power line (EPL) glades, which cross light and dark conifer formations. The microarthropods react on the changes of hydrotermic soil conditions in a higher degree. The direct influence of electromagnetic field on the population density of soil invertebrates has place in both forest formations, but with opposite consequences. The same is demonstrated by herpetobium elements: the clear dominance of «meadow» species in fir formations and the absence of this in pine parts. Small mammals on the LEP glades increase their abundance and species diversity. They also demonstrate that their distribution is dominated by food and protection conditions. But at the same time, the distribution of constant rodent winter refuges demonstrate the negative effects of EPL existence. The analysis of bird populations on the basis of optimal life conditions demonstrated a highest negative effect of electromagnetic field of EPL. Independently of the creation of good protection, food and nesting conditions for birds, which usually occupy open biotopes and bush with herb thickets, they avoid the EPL glades. The first results showed the dual effect of EPL glades on animal populations. It is necessary to take into account the forming of intrazonal locations and real electromagnetic effects. The significant conclusions are found for birds, because they receive more irradiation. Also some biological peculiarities are important: the migratory species have a possibility to react immediately, according to the season, on the changing of biotopes. As for other animal groups, it is necessary to prolong the study of seasonal changes. For the invertebrates it must be performed the instrumental analysis of the differences of hydrotermic conditions of EPL glades and native biotopes

    Surface-Modified Magnetic Nanoscale Materials: Preparation and Study of Their Structure, Composition, and Properties

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    Multiscale simulation of gas cleaning processes

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