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Results of biomedical investigations of PHB and PHB/PHV fibers / T. Volova [et al.] // Biochemical Engineering Journal. - 2003. - Vol. 16, Is. 2. - P125-133, DOI 10.1016/S1369-703X(03)00038-X . - ISSN 1369-703X
Кл.слова (ненормированные):
Biocompatibility -- Fibers -- Implants -- Poly-3-hydroxybutyrate (PHB) -- Poly-3-hydroxybutyrate-co-poly-3-hydroxyvalerate (PHB/PHV) -- Polyhydroxyalkanoates (PHAs) -- Tissue reaction -- Bacteriology -- Calcification (biochemistry) -- Copolymers -- Flammability -- Tissue -- Tissue response -- Biomedical engineering -- acid phosphatase -- poly(3 hydroxybutyric acid) -- poly(3 hydroxybutyric acid) co poly(3 hydroxyvaleric acid) -- polyhydroxyalkanoic acid -- suture material -- unclassified drug -- animal experiment -- article -- bacterial metabolism -- biochemistry -- biocompatibility -- biomedicine -- calcification -- catgut -- correlation analysis -- dose time effect relation -- enzyme activity -- fascia -- fiber -- foreign body -- functional assessment -- giant cell -- implantation -- in vivo study -- inflammation -- intermethod comparison -- macrophage -- materials testing -- multinuclear cell -- muscle injury -- necrosis -- nonhuman -- parameter -- phagocytosis -- physiology -- postoperative period -- priority journal -- process monitoring -- ralstonia eutropha b 5786 -- scar formation -- silk -- strength -- suture -- synthesis -- tissue reaction -- Wautersia eutropha -- wound healing -- Animalia -- Ralstonia -- Wautersia eutropha
Аннотация: The paper presents the results of biomedical investigations of sutures made of polyhydroxyalkanoates (PHAs) of two types (poly-3-hydroxybutyrate (PHB) and poly-3-hydroxybutyrate-co-poly-3-hydroxyvalerate (PHB/PHV)), synthesized by the bacteria Ralstonia eutropha B 5786 in the experiment on test animals in vivo, in comparison with silk and catgut sutures. PHB and PHB/PHV (PHBV) implants produced no adverse effect on physiological, biochemical and functional parameters of the animals during the post-surgery period. The tested PHA sutures featured the necessary strength throughout the healing period of the muscle-fascial cuts. The reaction of tissues to the implantation of PHB and PHB/PHV fibers fitted into the usual scheme characteristic of the wound process and of the reaction to a foreign-body invasion. This reaction and the reaction of tissues to silk had the similar nature and period of inflammation, but it was much less pronounced than the reaction to catgut. The tissue response to the implantation of PHAs consisted in a short-duration (up to 2 weeks) post-traumatic inflammation and the formation of a fibrous capsule less than 200 ?m thick during weeks 4-8, which in 4-6 months was reduced to 40-60 ?m in the course of reverse development. There were no adverse changes, such as suppurative inflammation, necrosis, calcification, and malignization of the cicatrice, at the site of implantation of PHA filaments, unlike in the cases with silk and catgut. In the case of PHA implantation there was a typical prolonged (throughout the post-surgery monitoring period) pronounced macrophagal stage with a large number of macrophages present. The macrophages were of the phagocytic type and multinucleate giant foreign cells, with a high activity of acid phosphomonoesterase that correlated with the activity of the enzyme in blood. Throughout the period of monitoring no differences in the tissue response to the implantation of the polymer filaments of two PHA types were recorded. В© 2003 Elsevier Science B.V. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 60036, Russian Federation
Inst. Transplantology Artif. Organs, Russian Ministry of Health, Shchukinskaya 1, 123182 Moscow, Russian Federation
Terr. Pathological Anatomy Bureau, Partisan Zheleznyak St. 1, Krasnoyarsk 660049, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.; Shishatskaya, E.; Sevastianov, V.; Efremov, S.; Mogilnaya, O.

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Correlations between fatty acid composition of seston and zooplankton and effects of environmental parameters in a eutrophic Siberian reservoir / M. I. Gladyshev [et al.] // Limnologica. - 2010. - Vol. 40, Is. 4. - P343-357, DOI 10.1016/j.limno.2009.12.004 . - ISSN 0075-9511
Кл.слова (ненормированные):
Eicosapentaenoic acid -- Fatty acids -- Phytoplankton -- Temperature -- Zooplankton -- canonical analysis -- correlation -- eutrophic environment -- fatty acid -- multivariate analysis -- phytoplankton -- seasonal variation -- seston -- taxonomy -- temperature effect -- water temperature -- zooplankton -- algae -- Bacillariophyta -- Ciliophora -- Cyanobacteria -- Cyclopoida -- Rotifera
Аннотация: During two sampling seasons we analyzed on weekly basis fatty acid (FA) composition of seston fraction <130?m and zooplankton fraction >130?m, and compared them using a multivariate canonical correlation analysis (CCA). Besides, we evaluated a possible impact of water temperature and inorganic nutrients on FA composition of the seston and the zooplankton.In spite of significant differences in percentages of several individual FAs, we found very strong canonical correlation (cross-correlation, 1-week lag) between FA composition of the seston and the zooplankton. The most important factor, providing the overall canonical cross-correlation between FA profiles of the seston and the zooplankton fractions was eicosapentaenoic acid (20:5?3, EPA). FA composition of the zooplankton fraction had comparatively poor correlations with taxonomic composition of the zooplankton. Thus, seasonal variations of FA composition of the zooplankton were determined primarily by seasonal changes in FA composition of the seston, rather than by taxonomic differences of FA profiles between rotifers, cyclopoids and cladocerans. FA composition of the seston was strongly affected by its taxonomic composition, namely by that of phytoplankton. According to CCA, the highest factor loadings pertained to diatoms interacting with their marker acids, including EPA, and cyanobacteria and greens, interacting with their marker acids. Ciliates and small rotifers composed considerable and sometimes major part of the seston biomass, but according to CCA their contributions to seasonal variations of the total FA profile of the seston were insignificant. This finding indirectly support the conclusion of the other authors, that the main source of FAs presented in ciliates and rotifers must be sought in algae and that they do not modify FA composition of food consumed, apart from repackaging it.Water temperature was the principal environmental parameter which drove the overall variations of FA composition. Factor loadings for the inorganic nutrients were comparatively negligible. The main contribution in the seasonal variation of FA composition of the seston was given by negative interaction between water temperature and percentage of EPA in the seston. В© 2009 Elsevier GmbH.

Scopus
Держатели документа:
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Sushchik, N.N.; Makhutova, O.N.; Dubovskaya, O.P.; Kravchuk, E.S.; Kalachova, G.S.; Khromechek, E.B.

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Spatial and temporal anomalies of sea surface temperature in global scale (by space-based data) / A. Shevyrnogov, G. Vysotskaya, E. Shevyrnogov // Advances in Space Research. - 2004. - Vol. 33, Is. 7. - P1179-1183, DOI 10.1016/S0273-1177(03)00369-7 . - ISSN 0273-1177
Кл.слова (ненормированные):
Anomalies -- Chlorophyll -- Hydrological structure -- Space-based data -- Temperature -- Chlorophyll -- Data reduction -- Oceanography -- Satellites -- Surface properties -- Temperature measurement -- Satellite images -- Spatial distribution -- Space research -- AVHRR -- chlorophyll -- remote sensing -- satellite imagery -- sea surface temperature
Аннотация: The work presents the data on the spatial distribution of temperature anomalies in the Global Ocean, based on the long-term measurements with the AVHRR satellite equipment. It is noteworthy that such results can be only obtained by using long time series of satellite images. To obtain them by ship-borne methods is actually impossible. The proposed anomaly criterion is equal to a difference between minimum/maximum and average temperature, normed for the mean square deviation. The difference is calculated from the whole time series (with regard to a season). Based on this criterion, anomalies can be distinguished on the background of usual seasonal dynamics at various absolute values of deviations of the measured parameter. Besides, rare, single, fluctuations can be also revealed. Based on the proposed criterion, connected zones have been defined. These zones occur almost in every part of the Global Ocean. The data obtained have been analyzed in association with the CZCS (1978-1986) and SeaWiFS satellite images in order to compare them with the areas of anomalous dynamics of chlorophyll concentration and the regions quasistationary in the seasonal dynamics of chlorophyll. Anomalies in the temperature dynamics are of exceptional importance for the formation of climatic deviations; they affect the ocean-atmosphere interaction and reflect variations in the hydrological structure of the surface waters. The work presents a comparison with the dynamics of chlorophyll concentration distribution determined from the SeaWiFS data for the Atlantic Ocean. В© 2003 COSPAR. Published by Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics of SB RAS, Krasnoyarsk, Akademgorodok 660036, Russian Federation
Inst Comp Modeling of SB RAS, Krasnoyarsk, Akademgorodok 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Shevyrnogov, E.

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Effect of Growing Conditions on Wheat Hormonal Status and Productivity in Experimental Ecological System / R. A. Karnachuk [et al.] // Russian Journal of Plant Physiology. - 2003. - Vol. 50, Is. 2. - P237-242, DOI 10.1023/A:1022933516663 . - ISSN 1021-4437
Кл.слова (ненормированные):
CO2 -- Illuminance -- Phytohormones -- Productivity -- Triticum aestivum -- Triticum -- Triticum aestivum
Аннотация: The levels of free and bound forms of IAA, ABA, cytokinins (CK), and gibberellins, as well as growth characteristics and productivity were investigated in two wheat lines. The plants were grown under controlled conditions in an artificial ecosystem that allowed the irradiance, CO 2 concentration, and rhizosphere temperature to be changed. The main difference in the hormonal status of leaves of tall spring wheat, line 232, and dwarf wheat, line 95-3, was the absence of GA9 gibberellins in the latter. It was found that the light intensity and temperature of rhizosphere insignificantly affected the balance of endogenous phytohormones and HI in wheat. The elevation of CO2 concentration resulted in a considerable increase in the content of free IAA, an appearance of free GA9, and a rise in the productivity of wheat, line 232. The concentration of CO 2 was shown to be a major parameter that determined HI in the experimental ecological system.

Scopus
Держатели документа:
Dept. of Plant Physiol. and Biotech., Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Environ. Contr. Life Support Sect., ESA, Estec Noorwijk, Netherlands
LGCB, Universite B. Pascal, Clermont-Ferrand, France : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Karnachuk, R.A.; Vaishlya, O.B.; Dorofeev, V.Yu.; Ushakova, S.A.; Tikhomirov, A.A.; Lasseur, Ch.; Gros, J.-B.

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Role of essential fatty acids in trophometabolic interactions in the freshwater ecosystems (a review) / N. N. Sushchik // Zhurnal Obshchei Biologii. - 2008. - Vol. 69, Is. 4. - С. 299-316 . - ISSN 0044-4596
Кл.слова (ненормированные):
essential fatty acid -- fresh water -- animal -- article -- ecosystem -- fish -- food chain -- human -- metabolism -- phytoplankton -- zooplankton -- Animals -- Ecosystem -- Fatty Acids, Essential -- Fishes -- Food Chain -- Fresh Water -- Humans -- Phytoplankton -- Zooplankton -- algae -- Animalia -- Bacteria (microorganisms) -- Invertebrata -- Vertebrata
Аннотация: Polyunsaturated fatty acids (PUFA) of ?3 family are of crucial physiological importance for the most animals and they are an essential and deficient component of human nutrition. These compounds are most effectively synthesized by some groups of algae, hence, aquatic ecosystems are considered to be the main source of these PUFA for human nutrition. Factors controlling the content and distribution of ?3 PUFA in freshwater organisms of basic trophic levels and determined PUFA final production in freshwater ecosystems are considered in the review. PUFA biosynthesis is known to be tightly related to basic fatty acid metabolic pathways. Hence, fatty composition and the PUFA content of major freshwater hydrobiont groups, including bacteria, algae, invertebrates and vertebrates, and environmental and population age effects are described. The peculiarities of PUFA transfer between organisms of various trophic levels are discussed. The essential ?3 PUFA is one of the important parameter of food quality of aquatic consumers and they can determine the rate of energy and matter transfer between producers and primary consumers and, as a result, in a whole freshwater food chain. Analysis of PUFA content and its regulation in biomass of various fish populations indicates that freshwater ecosystems are of the same value in respect of PUFA sources as marine ecosystems. Despite the great practical importance, the studies focused on production and whole pools of ?3 PUFA in different freshwater ecosystems are still scarce and need to be continued.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Sushchik, N.N.

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An alternative approach to solar system exploration providing safety of human mission to Mars / J. I. Gitelson [et al.] // Advances in Space Research. - 2003. - Vol. 31, Is. 1. - P17-24, DOI 10.1016/S0273-1177(02)00657-9 . - ISSN 0273-1177
Кл.слова (ненормированные):
Health care -- Parameter estimation -- Planets -- Radiation -- Safety factor -- Mars exploration -- Solar system -- space technology -- Electricity -- Feasibility Studies -- Human Engineering -- Humans -- Life Support Systems -- Man-Machine Systems -- Mars -- Radiation Protection -- Robotics -- Safety -- Solar System -- Space Flight -- Spacecraft
Аннотация: For systematic human Mars exploration, meeting crew safety requirements, it seems perspective to assemble into a spacecraft: an electrical rocket, a well-shielded long-term life support system, and a manipulator-robots operating in combined "presence effect" and "master-slave" mode. The electrical spacecraft would carry humans to the orbit of Mars, providing short distance (and low signal time delay) between operator and robot-manipulators, which are landed on the surface of the planet. Long-term hybrid biological and physical/chemical LSS could provide environment supporting human health and well being. Robot-manipulators operating in "presence effect" and "master-slave" mode exclude necessity of human landing on Martian surface decreasing the level of risk for crew. Since crewmen would not have direct contact with the Martian environment then the problem of mutual biological protection is essentially reduced. Lightweight robot-manipulators, without heavy life support systems and without the necessity of returning to the mother vessel, could be sent as scouts to different places on the planet surface, scanning the most interesting for exobiological research site. Some approximate estimations of electric spacecraft, long-term hybrid LSS, radiation protection and mission parameters are conducted and discussed. В© 2002 COSPAR. Published by Elsevier Science Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch Russian Acad. Sci., Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gitelson, J.I.; Bartsev, S.I.; Mezhevikin, V.V.; Okhonin, V.A.

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Dynamics of forest insect density: Bifurcation approach / A. D. Bazykin [et al.] // Journal of Theoretical Biology. - 1997. - Vol. 186, Is. 3. - P267-278, DOI 10.1006/jtbi.1996.0363 . - ISSN 0022-5193
Кл.слова (ненормированные):
article -- ecology -- forest -- insect -- nonhuman -- population density -- population dynamics -- population model -- priority journal
Аннотация: Six basic phase portraits differing in character and in the number of their equilibrium behaviour regimes were suggested in the classification of forest insect population dynamics. The portraits graphically illustrate six types of dynamic behavior of numbers of the system 'phytophage-entomophage': two types of stable equilibrium dynamics (stationary and oscillatory) and four types corresponding to outbreaks of mass reproduction - fixed, permanent, reversive and true outbreaks, respectively. In this paper we consider the single parameter model, with its parametric domains realizing a wide spectrum of phase dynamics, both basic and transitional. The changes in the phase portraits are accompanied by the bifurcations in the model. The results of these analyses are in agreement with the 'stability principle of mobile ecological systems' and may supply its parameter substantiation at the model level.

Scopus
Держатели документа:
Inst. of Math. Problem Biology, Russian Academy of Sciences, Puschino Moscow Region, 142292, Russian Federation
Ctr. of Productivity and Forest E., Russian Academy of Sciences, Novocheremushkinskaya, 69, Moscow 117418, Russian Federation
Institute of Biophysics S.B., Russ. Acad. of Sciences, Krasnoyarsk, Akademgorodok 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bazykin, A.D.; Berezovskaya, F.S.; Isaev, A.S.; Khlebopros, R.G.

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Characterization of polymeric microparticles based on resorbable polyesters of oxyalkanoic acids as a platform for deposition and delivery of drugs / A. V. Goreva [et al.] // Polym. Sci. Ser. A. - 2012. - Vol. 54, Is. 2. - P94-105, DOI 10.1134/S0965545X12020022. - Cited References: 33. - This work was supported by the program for Support of Leading Scientific Schools of the Russian Federation (project no. 11.G34.31.0013.2010, Biotechnology of New Biomaterials) and the program of integrated studies of the Presidium of the Siberian Branch, Russian Academy of Sciences (project no. 93). . - 12. - ISSN 0965-545X

РУБ Polymer Science
Рубрики:
IN-VITRO RELEASE
   POLYHYDROXYBUTYRATE MICROSPHERES
   BLENDS
   RIFAMPICIN
   BIOCOMPATIBILITY
   DEGRADATION
   FORMULATION
   COMPOSITE
   CARRIERS
   MODEL
Аннотация: The effect of the preparation technique (chemical composition of a polymer, type and method of emulsion mixing, and molecular mass of a drug) on the yield, structure, and size of microparticles obtained from resorbable polyesters of microbiological origin, polyhydroxyalkanoates, is studied. It is found that the concentration of the polymer solution and the method of emulsion mixing are the most significant factors affecting the diameter of microparticles based on polyhydroxyalkanoates; the surface structure of particles depends to a higher extent on the chemical composition of the polymer. The family of microparticles from 100-200 nm to 50-70 mu m in diameter is synthesized. It is shown that the rate of drug release from microparticles in vitro into the medium is higher in the case of 3-hydroxybutyrate copolymers with 3-hydroxyvalerate than in the case of the homopolymer of 3-hydroxybutyrate. This parameter increases with the content of 3-hydroxyvalerate units in the copolymer and the porosity and mass fraction of the drug in particles with a decrease in their sizes. For in vitro systems containing a phosphate buffer, variation in the preparation parameters makes it possible to obtain microparticles with various characteristics suitable for deposition of drugs. For microparticles obtained from polyhydroxyalkanoates and having different diameters, the mathematical description of the kinetics of drug release from the polymer matrix is provided.

Держатели документа:
[Goreva, A. V.
Shishatskaya, E. I.
Volova, T. G.] Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
[Shishatskaya, E. I.
Volova, T. G.] Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Krasnoyarsk 660041, Russia
[Goreva, A. V.
Sinskey, A. J.] MIT, Cambridge, MA 02139 USA : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Goreva, A.V.; Shishatskaya, E.I.; Volova, T.G.; Sinskey, A.J.

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The analysis of seasonal activity of photosynthesis and efficiency of various vegetative communities on a basis NDVI for modeling of biosphere processes / Yu. D. Ivanova [et al.] // Advances in Space Research. - 2007. - Vol. 39, Is. 1. - P95-99, DOI 10.1016/j.asr.2006.02.028 . - ISSN 0273-1177
Кл.слова (ненормированные):
NDVI -- Plant communities -- Synoptic parameters -- Biomass -- Climatology -- Parameter estimation -- Photosynthesis -- Plants (botany) -- Statistical methods -- Time series analysis -- NDVI -- Plant communities -- Seasonal activity -- Synoptic parameters -- Vegetation
Аннотация: NDVI (Normalized Difference Vegetation Index) is proposed as an area-dependent climatic variable, which reflects climatically significant events and processes. NDVI is taken as a simple quantitative indicator of the amount of photosynthetically active biomass. Mean values of NDVI have been calculated for the period between 1996 and 2001. NDVI time series have been analyzed in conjunction with meaningful synoptic parameters that influence the behavior of plants in different plant communities of Eastern Siberia (tundra, taiga, and steppe). Based on GIS technologies, statistical tests have been carried out and correlations between the study parameters have been found. В© 2007.

Scopus
Держатели документа:
Institute of Biophysics, Russian Academy of Sciences, Siberian Branch, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State Technical University, Kirensky 26, Krasnoyarsk, 660074, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Ivanova, Yu.D.; Bartsev, S.I.; Pochekutov, A.A.; Kartushinsky, A.V.

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10.

QUANTITATIVE DESCRIPTION OF SLOW INDUCTION OF CHLOROPHYLL FLUORESCENCE DURING ONTOGENY OF HIGHER-PLANT LEAVES [Text] / T. V. NESTERENKO, F. Y. SIDKO // RUSSIAN PLANT PHYSIOLOGY. - 1993. - Vol. 40, Is. 1. - P. 5-10. - Cited References: 23 . - ISSN 1070-3292

РУБ Plant Sciences

Кл.слова (ненормированные):
CUCUMIS-SATIVUS -- LEAVES -- ONTOGENY -- CHLOROPHYLL FLUORESCENCE
Аннотация: Additional integral and kinetic parameters of induction curves have been introduced on the basis of analysis of currently employed parameters of slow induction of fluorescence (SIF) for a more complete quantitative description of SIF changes during ontogenesis of higher plant leaves. High sensitivity of the additional parameters to the age state of leaf tissue as compared with previously employed parameters is demonstrated on the example of cucumber leaves (Cucumis sativus L.). Analysis of the relationship between the photosynthetic rate and SIF parameters of separate cucumber leaf disks revealed the presence of a high positive correlation between the photosynthetic rate and the greatest possible average decline in fluorescence intensity during the inductive period for mature regions of the leaf and regions starting to senesce (the correlation coeffcient attained values of 0.95), which indicates the possibility of using the given SIF parameter in further elaboration of methods for estimation of chloroplast photosynthetic activity at the level of the higher plant leaf.

WOS : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
NESTERENKO, T.V.; SIDKO, F.Y.

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11.

Effect of growing conditions on wheat hormonal status and productivity in experimental ecological system [Text] / R. A. Karnachuk [et al.] // Russ. J. Plant Physiol. - 2003. - Vol. 50, Is. 2. - P. 237-242, DOI 10.1023/A:1022933516663. - Cited References: 24 . - ISSN 1021-4437

РУБ Plant Sciences
Рубрики:
GRAINS
Кл.слова (ненормированные):
Triticum aestivum -- phytohormones -- CO2 -- illuminance -- productivity
Аннотация: The levels of free and bound forms of IAA, ABA, cytokinins (CK), and gibberellins, as well as growth characteristics and productivity were investigated in two wheat lines. The plants were grown under controlled conditions in an artificial ecosystem that allowed the irradiance, CO2 concentration, and rhizosphere temperature to be changed. The main difference in the hormonal status of leaves of tall spring wheat, line 232, and dwarf wheat, line 95-3, was the absence of GA(9) gibberellins in the latter. It was found that the light intensity and temperature of rhizosphere insignificantly affected the balance of endogenous phytohormones and HI in wheat. The elevation of CO2 concentration resulted in a considerable increase in the content of free IAA, an appearance of free GA(9), and a rise in the productivity of wheat, line 232. The concentration of CO2 was shown to be a major parameter that determined HI in the experimental ecological system.

WOS
Держатели документа:
Tomsk VV Kuibyshev State Univ, Dept Plant Physiol & Biotechnol, Tomsk 634050, Russia
Russian Acad Sci, Siberian Div, Inst Biophys, Krasnoyarsk 660036, Russia
Estec, ESA, Environm Control & Life Support Sect, Noordwijk, Netherlands
Univ Clermont Ferrand, LGCB, Clermont Ferrand, France
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Karnachuk, R.A.; Vaishlya, O.B.; Dorofeev, V.Y.; Ushakova, S.A.; Tikhomirov, A.A.; Lasseur, C...; Gros, J.B.

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12.

Spatial and temporal anomalies of sea surface temperature in global scale (by space-based data) [Text] / A. . Shevyrnogov, G. . Vysotskaya, E. . Shevyrnogov ; ed. P Schlussel [et al.] // CLIMATE CHANGE PROCESSES IN THE STRATOSPHERE, EARTH-ATMOSPHERE-OCEAN SYSTEMS, AND OCEANOGRAPHIC PROCESSES FROM SATELLITE DATA. Ser. ADVANCES IN SPACE RESEARCH : PERGAMON-ELSEVIER SCIENCE LTD, 2004. - Vol. 33: 2nd World Space Congress/34th COSPAR Scientific Assembly (OCT 10-19, 2002, HOUSTON, TX), Is. 7. - P. 1179-1183, DOI 10.1016/S0273-1177(03)00369-7. - Cited References: 6 . - ISBN 0273-1177

РУБ Engineering, Aerospace + Astronomy & Astrophysics + Environmental Sciences + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences + Remote Sensing

Кл.слова (ненормированные):
temperature -- anomalies -- hydrological structure -- chlorophyll -- space-based data
Аннотация: The work presents the data on the spatial distribution of temperature anomalies in the Global Ocean, based on the long-term measurements with the AVHRR satellite equipment. It is noteworthy that such results can be only obtained by using long time series of satellite images. To obtain them by ship-borne methods is actually impossible. The proposed anomaly criterion is equal to a difference between minimum/maximum and average temperature, normed for the mean square deviation. The difference is calculated from the whole time series (with regard to a season). Based on this criterion, anomalies can be distinguished on the background of usual seasonal dynamics at various absolute values of deviations of the measured parameter. Besides, rare, single, fluctuations can be also revealed. Based on the proposed criterion, connected zones have been defined. These zones occur almost in every part of the Global Ocean. The data obtained have been analyzed in association with the CZCS (1978-1986) and SeaWiFS satellite images in order to compare them with the areas of anomalous dynamics of chlorophyll concentration and the regions quasistationary in the seasonal dynamics of chlorophyll. Anomalies in the temperature dynamics are of exceptional importance for the formation of climatic deviations; they affect the ocean-atmosphere interaction and reflect variations in the hydrological structure of the surface waters. The work presents a comparison with the dynamics of chlorophyll concentration distribution determined from the SeaWiFS data for the Atlantic Ocean. (C) 2003 COSPAR. Published by Elsevier Ltd. All rights reserved.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, SB, Krasnoyarsk 660036, Russia
Russian Acad Sci, Inst Computat Modeling, SB, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A...; Vysotskaya, G...; Shevyrnogov, E...; Schlussel, P \ed.\; Stuhlmann, R \ed.\; Campbell, JW \ed.\

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13.

Effect of low-dose ionizing radiation on luminous marine bacteria: radiation hormesis and toxicity [Text] / N. S. Kudryasheva, T. V. Rozhko // J. Environ. Radioact. - 2015. - Vol. 142. - P68-77, DOI 10.1016/j.jenvrad.2015.01.012. - Cited References:131. - This work was supported by the Russian Foundation for Basic Research, Grant No.13-04-01305a, the Program "Molecular and Cellular Biology" of the Russian Academy of Sciences, project VI 57.1.1. The part of the work (review of effects of americium-241) was supported by the Russian Science Foundation, Grant No. 14-14-00076. . - ISSN 0265-931X. - ISSN 1879-1700

РУБ Environmental Sciences
Рубрики:
RECOMBINANT LUMINESCENT MICROORGANISMS
PHOTOBACTERIUM-LEIOGNATHI
Кл.слова (ненормированные):
Marine bacteria -- Low-dose effects -- Radiation hormesis -- Radiotoxicity -- Reactive oxygen species
Аннотация: The paper summarizes studies of effects of alpha- and beta-emitting radionuclides (americium-241, uranium-235+238, and tritium) on marine microorganisms under conditions of chronic low-dose irradiation in aqueous media. Luminous marine bacteria were chosen as an example of these microorganisms; bioluminescent intensity was used as a tested physiological parameter. Non-linear dose-effect dependence was demonstrated. Three successive stages in the bioluminescent response to americium-241 and tritium were found: 1 - absence of effects (stress recognition), 2 - activation (adaptive response), and 3 - inhibition (suppression of physiological function, i.e. radiation toxicity). The effects were attributed to radiation hormesis phenomenon. Biological role of reactive oxygen species, secondary products of the radioactive decay, is discussed. The study suggests an approach to evaluation of non-toxic and toxic stages under conditions of chronic radioactive exposure. (C) 2015 Elsevier Ltd. All rights reserved.

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Держатели документа:
Inst Biophys SB RAS, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Krasnoyarsk State Med Acad, Krasnoyarsk 660022, Russia

Доп.точки доступа:
Kudryasheva, N. S.; Rozhko, T. V.; Russian Foundation for Basic Research [13-04-01305a]; Program "Molecular and Cellular Biology" of the Russian Academy of Sciences [VI 57.1.1]; Russian Science Foundation [14-14-00076]

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14.

The general evolution of energy–matter interactions on earth: From a gas whirlwind to a technogenic civilization / N. S. Pechurkin, A. N. Shuvaev // Biophysics. - 2015. - Vol. 60, Is. 2. - P331-334, DOI 10.1134/S0006350915020153 . - ISSN 0006-3509
Кл.слова (ненормированные):
biosphere -- energy transfer -- evolution -- Animalia -- Mammalia -- Protozoa
Аннотация: An idea of the general evolution through the long-term response of the Earth to the external flow of radiant energy from the Sun is proposed. Due to the finiteness of matter on Earth, as well as on any other planet, the continuous pumping flow of radiant energy has been shown to lead to cyclization of transformations and mass transfer along the emerging gradients. The evolution of the energy–matter interaction follows the pathway of capturing and transferring more energy by a smaller quantity of matter, i.e., the pathway of the increase in the amount of energy used by each unit mass. According to this parameter, the least effective mass transfer is a simple transfer as vortices of gases along the gradients of temperature and pressure, which took place on the primary surface of the planet. Long-term natural selection towards water accumulation on the planet has played a special role in the development of the interaction between energy and matter. Phase transitions (ice, water, and vapor) and mechanical transfers are the most common energy–matter processes. Chemical transformation of substances became possible based on water cycles, cyclic transfers, and transformations and developed with time into biological transformation. This type of energy–matter interaction is the most efficient. In particular, the energy of our star is captured during photosynthesis and utilized in the most active region of its radiation spectrum. During the biological evolution of heterotrophs, a increase in the coefficient that characterizes the energy exchange intensity from protozoa to mammals by several hundred times is most illustrative. The development and current dominance of humans as the species that is most active in the capturing of energy and meaningful organization of its new flows, in particular, based on the organic debris of former biospheres, is amazing but quite natural from the energy standpoint. During the technological evolution of humankind, the energy-exchange intensity for homoiotherms (warm-blooded animals) has increased by 20 times if it is recalculated for the technological energy that is used by the average inhabitant of the Earth. Thus, the victory of our species in planetary evolution fits well into the mainstream of the general evolution through energy–matter interactions: a multiple increase in star energy has been used to transform the matter on the surface of the irradiated planet. © 2015, Pleiades Publishing, Inc.

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Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Pechurkin, N.S.; Shuvaev, A.N.

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15.

Effect of light intensity on the age dependence of nonphotochemical fluorescence quenching in wheat leaf [Text] / T. V. Nesterenko, V. N. Shikhov, A. A. Tikhomirov // Photosynthetica. - 2015. - Vol. 53, Is. 4. - P617-620, DOI 10.1007/s11099-015-0133-2. - Cited References:16. - The study was performed within the framework of subject No. 56.1.4., Section VI in accordance with State Program of RAS Fundamental Research for 2013-2020. . - ISSN 0300-3604. - ISSN 1573-9058

РУБ Plant Sciences
Рубрики:
CHLOROPHYLL FLUORESCENCE
   PHOTOSYNTHESIS
   LEAVES
   INDUCTION
   ENERGY
Кл.слова (ненормированные):
chlorophyll fluorescence induction -- leaf age -- photosystem II
Аннотация: The effects of actinic light (AL) intensity on the age dependence of nonphotochemical fluorescence quenching (q(N)) and effective quantum yield in PSII (I broken vertical bar(PSII)) were studied in continuously illuminated wheat leaves of the upper tier. Regular changes were revealed in both age dependence of q(N) at elevated AL intensities and light curves of q(N). These changes are related to alterations in strategies of redistribution and use of absorbed light energy by the photosynthetic apparatus at different stages of wheat leaf development. Unlike I broken vertical bar(PSII), q(N) as a parameter was more sensitive to the differences in the leaf age at a certain range of light intensities. At the same time, the stability of q(N) at moderate light intensities may serve as an indication of leaf maturity.

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Держатели документа:
RAS, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Nesterenko, T. V.; Shikhov, V. N.; Tikhomirov, A. A.; RAS [56.1.4]

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16.

On the mechanism of biological activation by tritium / T. V. Rozhko [et al.] // J. Environ. Radioact. - 2016. - Vol. 157. - P131-135, DOI 10.1016/j.jenvrad.2016.03.017 . - ISSN 0265-931X
Кл.слова (ненормированные):
DNA mutations -- Low-dose effect -- Luminous marine bacteria -- Radiation hormesis -- Tritium
Аннотация: The mechanism of biological activation by beta-emitting radionuclide tritium was studied. Luminous marine bacteria were used as a bioassay to monitor the biological effect of tritium with luminescence intensity as the physiological parameter tested. Two different types of tritium sources were used: HTO molecules distributed regularly in the surrounding aqueous medium, and a solid source with tritium atoms fixed on its surface (tritium-labeled films, 0.11, 0.28, 0.91, and 2.36 MBq/cm2). When using the tritium-labeled films, tritium penetration into the cells was prevented. The both types of tritium sources revealed similar changes in the bacterial luminescence kinetics: a delay period followed by bioluminescence activation. No monotonic dependences of bioluminescence activation efficiency on specific radioactivities of the films were found. A 15-day exposure to tritiated water (100 MBq/L) did not reveal mutations in bacterial DNA. The results obtained give preference to a "non-genomic" mechanism of bioluminescence activation by tritium. An activation of the intracellular bioluminescence process develops without penetration of tritium atoms into the cells and can be caused by intensification of trans-membrane cellular processes stimulated by ionization and radiolysis of aqueous media. © 2016 Elsevier Ltd.

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Держатели документа:
Krasnoyarsk State Medical Academy, P.Zheleznyaka 1, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodny 79, Krasnoyarsk, Russian Federation
Moscow State University, Department of Chemistry, Moscow, Russian Federation
Institute of Biophysics SB RAS, Akademgorodok 50/50, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Rozhko, T. V.; Badun, G. A.; Razzhivina, I. A.; Guseynov, O. A.; Guseynova, V. E.; Kudryasheva, N. S.

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17.

Exposure of luminous marine bacteria to low-dose gamma-radiation / N. S. Kudryasheva [et al.] // J. Environ. Radioact. - 2017. - Vol. 169-170. - P64-69, DOI 10.1016/j.jenvrad.2017.01.002 . - ISSN 0265-931X
Кл.слова (ненормированные):
Bioassay -- Low-dose gamma-radiation -- Luminous marine bacteria -- Mutagenic effect -- Radiotoxicity -- Temperature dependence -- Bacteria -- Bioassay -- Bioluminescence -- Gamma rays -- Ionizing radiation -- Irradiation -- Phosphorescence -- Physiological models -- Radiation effects -- Temperature distribution -- Low dose -- Marine bacterium -- Mutagenic effect -- Radiotoxicity -- Temperature dependence -- Radiation -- Bacteria (microorganisms) -- Photobacterium phosphoreum
Аннотация: The study addresses biological effects of low-dose gamma-radiation. Radioactive 137Cs-containing particles were used as model sources of gamma-radiation. Luminous marine bacterium Photobacterium phosphoreum was used as a bioassay with the bioluminescent intensity as the physiological parameter tested. To investigate the sensitivity of the bacteria to the low-dose gamma-radiation exposure (?250 mGy), the irradiation conditions were varied as follows: bioluminescence intensity was measured at 5, 10, and 20°С for 175, 100, and 47 h, respectively, at different dose rates (up to 4100 ?Gy/h). There was no noticeable effect of gamma-radiation at 5 and 10°С, while the 20°С exposure revealed authentic bioluminescence inhibition. The 20°С results of gamma-radiation exposure were compared to those for low-dose alpha- and beta-radiation exposures studied previously under comparable experimental conditions. In contrast to ionizing radiation of alpha and beta types, gamma-emission did not initiate bacterial bioluminescence activation (adaptive response). As with alpha- and beta-radiation, gamma-emission did not demonstrate monotonic dose-effect dependencies; the bioluminescence inhibition efficiency was found to be related to the exposure time, while no dose rate dependence was found. The sequence analysis of 16S ribosomal RNA gene did not reveal a mutagenic effect of low-dose gamma radiation. The exposure time that caused 50% bioluminescence inhibition was suggested as a test parameter for radiotoxicity evaluation under conditions of chronic low-dose gamma irradiation. © 2017 Elsevier Ltd

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Держатели документа:
Institute of Biophysics SB RAS, Federal Research Center ‘Krasnoyarsk Science Center SB RAS’, 50/50 Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodny Prospect, Krasnoyarsk, Russian Federation
Krasnoyarsk State Agrarian University, 90 Mira Prospect, Krasnoyarsk, Russian Federation
SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine SB RAS, Novosibirsk, Russian Federation

Доп.точки доступа:
Kudryasheva, N. S.; Petrova, A. S.; Dementyev, D. V.; Bondar, A. A.

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18.

Gamma irradiation of resting eggs of Moina macrocopa affects individual and population performance of hatchlings / E. Zadereev [et al.] // J. Environ. Radioact. - 2017. - Vol. 175-176. - P126-134, DOI 10.1016/j.jenvrad.2017.05.002 . - ISSN 0265-931X
Кл.слова (ненормированные):
Cladocera -- Life cycle parameters -- Population performance -- Resting eggs -- ?-radiation -- Gamma rays -- Irradiation -- Life cycle -- Radiation effects -- Radioactive materials -- Sediments -- Cladocera -- Cycle parameters -- Dose response relationships -- Population performance -- Reproductive rates -- Resting eggs -- Sensitive parameter -- Zooplankton communities -- Radiation -- adolescent -- Cladocera -- contamination -- controlled study -- dose response -- female -- gamma irradiation -- gamma radiation -- hatchling -- human -- human experiment -- life cycle -- Moina macrocopa -- newborn -- nonhuman -- sediment -- zooplankton -- Animalia -- Cladocera -- Moina macrocopa
Аннотация: We investigated the effects of ?-radiation on the survival of resting eggs of the cladoceran Moina macrocopa, on the parameters of the life cycle of neonates hatched from the irradiated eggs and on the performance of the population initiated from irradiated eggs. The study showed that ?-radiation in a range of doses from the background level to 100 Gy had no effect on survival of irradiated eggs. The absorbed dose of 200 Gy was lethal to resting eggs of M. macrocopa. The number of clutches and net reproductive rate (R0) of hatchlings from eggs exposed to radiation were the strongly affected parameters in experiments with individual females. The number of clutches per female was drastically reduced for females hatched from egg exposed to 80–100 Gy. The most sensitive parameter was the R0. The estimated ED50 for the R0 (effective dose that induces 50% R0 reduction) was 50 Gy. Population performance was also affected by the irradiation of the resting stage of animals that initiated population. Populations that was initiated from hatchlings from resting eggs exposed to 100 Gy was of smaller size and with fewer juvenile and parthenogenetic females in comparison with control populations. Thus, we determined the dose-response relationship for the effect of gamma radiation on survival of resting eggs and individual and population responses of hatchlings from irradiated resting eggs. We conclude that for highly polluted areas contamination of bottom sediments with radioactive materials could affect zooplankton communities through adverse chronic effects on resting eggs, which will be transmitted to hatchlings at individual or population levels. © 2017 Elsevier Ltd

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Держатели документа:
Institute of Biophysics, Federal Research Centre Krasnoyarsk Scientific Centre, Siberian Branch, Russian Academy of Sciences, 50/50 Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodniy Ave., Krasnoyarsk, Russian Federation
Budker Institute of Nuclear Physics, 11 Akademika Lavrent'eva Ave., Novosibirsk, Russian Federation

Доп.точки доступа:
Zadereev, E.; Lopatina, T.; Oskina, N.; Zotina, T.; Petrichenkov, M.; Dementyev, D.

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19.

Is bacterial luminescence response to low-dose radiation associated with mutagenicity? / T. V. Rozhko [et al.] // J. Environ. Radioact. - 2017. - Vol. 177. - P261-265, DOI 10.1016/j.jenvrad.2017.07.010 . - ISSN 0265-931X
Кл.слова (ненормированные):
Bioassay -- DNA -- Low-dose radiation -- Luminous marine bacteria -- Mutations -- Bacteria -- Bioassay -- Bioluminescence -- Chemical activation -- DNA -- DNA sequences -- Genes -- Ionizing radiation -- Kinetics -- Luminescence -- Nucleic acids -- Phosphorescence -- Physiological models -- Radioisotopes -- Bacterial suspensions -- Beta-emitting radionuclides -- Low dose radiation -- Luminescence intensity -- Marine bacterium -- Mutations -- Photobacterium phosphoreum -- Physiological parameters -- Radiation -- Bacteria (microorganisms) -- Photobacterium phosphoreum
Аннотация: Luminous marine bacteria are widely used in bioassays with luminescence intensity being a physiological parameter tested. The purpose of the study was to determine whether bacterial genetic alteration is responsible for bioluminescence kinetics change under low-dose radiation exposure. The alpha-emitting radionuclide 241Am and beta-emitting radionuclide 3H were used as the sources of low-dose ionizing radiation. Changes of bioluminescence kinetics of Photobacterium phosphoreum in solutions of 241Am(NO3)3, 7 kBq/L, and tritiated water, 100 MBq/L, were studied; bioluminescence kinetics stages (absence of effect, activation, and inhibition) were determined. Bacterial suspension was sampled at different stages of the bioluminescent kinetics; the doses accumulated by the samples were close or a little higher than a tentative limit of a low-dose interval: 0.10 and 0.85 Gy for 241Am, or 0.11 and 0.18 Gy for 3H. Sequence analysis of the 16S ribosomal RNA gene did not reveal a mutagenic effect of low-dose alpha and beta radiation in the bacterial samples. Previous results on bacterial DNA exposed to low-dose gamma radiation (0.25 Gy) were analyzed and compared to those for alpha and beta irradiation. It is concluded that bioluminescence activation and/or inhibition under the applied conditions of low-dose alpha, beta and gamma radioactive exposure is not associated with DNA mutations in the gene sequences tested. © 2017 Elsevier Ltd

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Держатели документа:
Krasnoyarsk State Medical Academy, 1 P.Zheleznyaka, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodny Prospect, Krasnoyarsk, Russian Federation
SB RAS Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine SB RAS, 8 Lavrentiev Avenue, Novosibirsk, Russian Federation
Siberian State Technological University, LB, 29 Pobedy, Lesosibirsk, Krasnoyarsk Region, Russian Federation
Institute of Biophysics SB RAS, Federal Research Center ‘Krasnoyarsk Science Center SB RAS’, 50/50 Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Rozhko, T. V.; Guseynov, O. A.; Guseynova, V. E.; Bondar, A. A.; Devyatlovskaya, A. N.; Kudryasheva, N. S.

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20.

Bioluminescent enzyme inhibition-based assay to predict the potential toxicity of carbon nanomaterials / E. N. Esimbekova [et al.] // Toxicol. Vitro. - 2017. - Vol. 45. - P128-133, DOI 10.1016/j.tiv.2017.08.022. - Cited References:55. - This study was supported by the Russian Science Foundation (project no. 16-14-10115). . - ISSN 0887-2333

РУБ Toxicology
Рубрики:
IN-VIVO
   ENGINEERED NANOPARTICLES
   NANOTUBE TOXICITY
   C-60
   FULLERENE
Кл.слова (ненормированные):
Nanotoxicity -- Enzyme inhibition-based assay -- Bioluminescence -- Luciferase -- Nanomaterials -- Nanotubes
Аннотация: A bioluminescent enzyme inhibition-based assay was applied to predict the potential toxicity of carbon nanomaterials (CNM) presented by single- and multi-walled nanotubes (SWCNT and MWCNT) and aqueous solutions of hydrated fullerene C-60 (C(60)HyFn). This assay specifically detects the influence of substances on parameters of the soluble or immobilised coupled enzyme system of luminescent bacteria: NAD(P)H:FMN-oxidoreductase + luciferase (Red + Luc). A protocol based on the optical properties of CNM for correcting the results of the bioluminescent assay was also developed. It was shown that the inhibitory activity of CNM on Red + Luc decreased in the following order: MWCNT > SWCNT > C(60)HyFn. The soluble enzyme system Red + Luc had high sensitivity to MWCNT and SWCNT, with values of the inhibition parameter IC50 equal to 0.012 and 0.16 mg/L, respectively. The immobilised enzyme system was more vulnerable to C(60)HyFn than its soluble form, with an IC50 equal to 1.4 mg/L. Due to its technical simplicity, rapid response time and high sensitivity, this bioluminescent method has the potential to be developed as a general enzyme inhibition-based assay for a wide variety of nanomaterials.

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Держатели документа:
SB RAS, Fed Res Ctr, Krasnoyarsk Sci Ctr, Inst Biophys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Esimbekova, Elena N.; Nemtseva, Elena V.; Bezrukikh, Anna E.; Jukova, Galina V.; Lisitsa, Albert E.; Lonshakova-Mukina, Viktoriya I.; Rimatskaya, Nadezhda V.; Sutormin, Oleg S.; Kratasyuk, Valentina A.; Esimbekova, Elena; Nemtseva, Elena; Russian Science Foundation [16-14-10115]

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