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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubovtseva, I. Yu, Aksenenko M. B., Nikolaeva E. D., Averchuk A. S., Moshev, A., V, Savchenko A. A., Markova, S., V, Ruksha T. G.
Заглавие : FOXC1-Mediated Effects of miR-204-5p on Melanoma Cell Proliferation
Колич.характеристики :8 с
Место публикации : Mol. Biol.: PLEIADES PUBLISHING INC, 2021. - Vol. 55, Is. 4. - С. 610-617. - ISSN 0026-8933, DOI 10.1134/S0026893321020199. - ISSN 1608-3245(eISSN)
Примечания : Cited References:24
Предметные рубрики: FOXC1
Аннотация: MicroRNAs epigenetically regulate physiological and pathological processes. Previously, we found that miR-204-5p is expressed at low levels in melanoma cells, and an increase in its level leads to a change in proliferation, migration, and invasion of these cancer cells. Now, using bioinformatics analysis, it has been shown that the target of miR-204-5p is FOXC1 transcription factor, which is implicated in carcinogenesis. Using the luciferase reporter assay, it was found that miR-204-5p suppresses expression of the FOXC1 gene by binding to its 3' non-coding region. Transfection of small interfering RNA (siRNA) targeting FOXC1 into melanoma cells caused a decrease in miR-204-5p levels, which is consistent with the generally accepted concept of feedback regulation of miRNA expression by target genes. According to the results of the MTT test and fluorescence microscopy, the proliferation level of melanoma cells under the influence of siRNA to FOXC1 decreased 72 h after transfection. Changes in the ratio of cells by cell cycle phase were analyzed using flow cytometry. Regulatory relationships between FOXC1 and miR-204-5p, and an inhibitory effect of FOXC1 knockdown on melanoma cell proliferation were revealed. Based on the results, it can be assumed that miR-204-5p regulates proliferation of melanoma cells by affecting FOXC1 expression.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zuev, I., V, Andrushchenko, P. Yu, Chuprov S. M., Zotina T. A.
Заглавие : Structural Features of Scales of Baikal Grayling Thymallus baicalensis under Conditions of an Altered Hydrological Regime
Колич.характеристики :7 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-44-240003]; Krasnoyarsk Regional Foundation [18-44-240003]; Siberian Federal University; Institute of Biophysics, Siberian Branch, Russian Academy of SciencesRussian Academy of Sciences
Место публикации : Inland Water Biol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2021. - Vol. 14, Is. 1. - С. 60-66. - ISSN 1995-0829, DOI 10.1134/S1995082920060176. - ISSN 1995-0837(eISSN)
Примечания : Cited References:39. - This study was partly supported by the Russian Foundation for Basic Research and Krasnoyarsk Regional Foundation for the Support of Scientific and Scientific-Technical Activity (2018-2020), project no. 18-44-240003, and budget themes of the Siberian Federal University and the Institute of Biophysics, Siberian Branch, Russian Academy of Sciences
Аннотация: The number of circuli between annual scale rings of grayling Thymallus baicalensis Dybowski, 1874 sampled in the Yenisei River in the downstream section of the Krasnoyarsk Hydroelectric Power Station, which does not freeze in winter, have been investigated and compared with populations of grayling from large tributaries of the Yenisei River (Amyl, Kan, Nizhnyaya Tunguska, and Bolshaya Kheta). It has been shown that graylings inhabiting the Yenisei River have a significantly higher (1.5-2.0 times, p 0.01) number of circuli in the second, third, and fourth annual rings of the scales than in the populations from the tributaries, which corresponds to a higher growth rate of the grayling population in the Yenisei River. An assumption is made about the transition of graylings inhabiting the Yenisei River channel in the lower reaches of the hydroelectric station to a sedentary lifestyle.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zuev I. V., Andrushchenko P. Y., Chuprov S. M., Zotina T. A.
Заглавие : Structural Features of Scales of Baikal Grayling Thymallus baicalensis under Conditions of an Altered Hydrological Regime
Место публикации : Inland Water Biol.: Pleiades journals, 2021. - Vol. 14, Is. 1. - С. 60-66. - ISSN 19950829 (ISSN), DOI 10.1134/S1995082920060176
Аннотация: Abstract: The number of circuli between annual scale rings of grayling Thymallus baicalensis Dybowski, 1874 sampled in the Yenisei River in the downstream section of the Krasnoyarsk Hydroelectric Power Station, which does not freeze in winter, have been investigated and compared with populations of grayling from large tributaries of the Yenisei River (Amyl, Kan, Nizhnyaya Tunguska, and Bolshaya Kheta). It has been shown that graylings inhabiting the Yenisei River have a significantly higher (1.5–2.0 times, p 0.01) number of circuli in the second, third, and fourth annual rings of the scales than in the populations from the tributaries, which corresponds to a higher growth rate of the grayling population in the Yenisei River. An assumption is made about the transition of graylings inhabiting the Yenisei River channel in the lower reaches of the hydroelectric station to a sedentary lifestyle. © 2021, Pleiades Publishing, Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubovtseva I. Y., Aksenenko M. B., Nikolaeva E. D., Averchuk A. S., Moshev A. V., Savchenko A. A., Markova S. V., Ruksha T. G.
Заглавие : FOXC1-Mediated Effects of miR-204-5p on Melanoma Cell Proliferation
Место публикации : Mol Biol (Mosk): NLM (Medline), 2021. - Vol. 55, Is. 4. - С. 667-675. - ISSN 00268984 (ISSN), DOI 10.31857/S0026898421030058
Аннотация: MicroRNAs epigenetically regulate physiological and pathological processes. Previously, we found that miR-204-5p is expressed at low levels in melanoma cells, and an increase in its level leads to a change in proliferation, migration, and invasion of these cancer cells. Now, using bioinformatics analysis, it has been shown that the target of miR-204-5p is FOXC1 transcription factor, which is implicated in carcinogenesis. Using the luciferase reporter assay, it was found that miR-204-5p suppresses expression of the FOXC1 gene by binding to its 3' non-coding region. Transfection of small interfering RNA (siRNA) targeting FOXC1 into melanoma cells caused a decrease in miR-204-5p levels, which is consistent with the generally accepted concept of feedback regulation of miRNA expression by target genes. According to the results of the MTT test and fluorescence microscopy, the proliferation level of melanoma cells under the influence of siRNA to FOXC1 decreased 72 h after transfection. Changes in the ratio of cells by cell cycle phase were analyzed using flow cytometry. Regulatory relationships between FOXC1 and miR-204-5p, and an inhibitory effect of FOXC1 knockdown on melanoma cell proliferation were revealed. Based on the results, it can be assumed that miR-204-5p regulates proliferation of melanoma cells by affecting FOXC1 expression.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zuev I. V., Andrushchenko P. Y., Zotina T. A.
Заглавие : Seasonal formation of annual rings on the scales of Baikal grayling inhabiting the middle reaches of the Yenisei River under altered temperature regime
Место публикации : Environ. Biol. Fishes: Springer Science and Business Media B.V., 2021. - Article in press. - ISSN 03781909 (ISSN), DOI 10.1007/s10641-021-01155-y
Аннотация: The seasonal formation of annual rings on the scales of Baikal grayling from the middle reaches of the Yenisei River has been studied to find out the reasons for the high growth rate of the grayling under altered temperature regime downstream of the dam of the Krasnoyarsk Hydroelectric Plant. The number of circuli outside the last identified annuli and in the second, third, and fourth completed annuli was estimated on 569 fish caught during the annual cycle. The von Bertalanffy growth function was used to describe the increment in the number of circuli over a year. The calculation showed that a new annual ring was produced in July. In November, there was no statistically significant difference between the circulus number in scale increment and the circulus number in the corresponding completed annuli of older fish. Thus, despite the increased duration of the period with optimal water temperatures downstream of the dam of the Krasnoyarsk Hydroelectric Plant, fish growth was observed in a limited period of the year, from July to November. The probable reason for the high growth rate of grayling in the study area is that the fish do not have to waste energy on seasonal migration to the tributaries. Taking into account that grayling biomass production in the middle Yenisei occurs from July to November, we can recommend shifting the dates of commercial fishing for grayling to the end of this period—November–December. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zuev, Ivan V., Andrushchenko, Pavel Yu., Zotina, Tatiana A.
Заглавие : Seasonal formation of annual rings on the scales of Baikal grayling inhabiting the middle reaches of the Yenisei River under altered temperature regime
Колич.характеристики :10 с
Коллективы : Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory; Krasnoyarsk Regional Scientific Foundation [20-44-240009]
Место публикации : Environ. Biol. Fishes: SPRINGER, 2021. - Article in press. - ISSN 0378-1909, DOI 10.1007/s10641-021-01155-y. - ISSN 1573-5133(eISSN)
Примечания : Cited References:40. - The research was supported by the grant of Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory, and Krasnoyarsk Regional Scientific Foundation No. 20-44-240009.
Предметные рубрики: THYMALLUS-ARCTICUS
FLOW REGULATION
SOCKEYE-SALMON
SOMATIC GROWTH
Аннотация: The seasonal formation of annual rings on the scales of Baikal grayling from the middle reaches of the Yenisei River has been studied to find out the reasons for the high growth rate of the grayling under altered temperature regime downstream of the dam of the Krasnoyarsk Hydroelectric Plant. The number of circuli outside the last identified annuli and in the second, third, and fourth completed annuli was estimated on 569 fish caught during the annual cycle. The von Bertalanffy growth function was used to describe the increment in the number of circuli over a year. The calculation showed that a new annual ring was produced in July. In November, there was no statistically significant difference between the circulus number in scale increment and the circulus number in the corresponding completed annuli of older fish. Thus, despite the increased duration of the period with optimal water temperatures downstream of the dam of the Krasnoyarsk Hydroelectric Plant, fish growth was observed in a limited period of the year, from July to November. The probable reason for the high growth rate of grayling in the study area is that the fish do not have to waste energy on seasonal migration to the tributaries. Taking into account that grayling biomass production in the middle Yenisei occurs from July to November, we can recommend shifting the dates of commercial fishing for grayling to the end of this period-November-December.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Makhrov A. A., Artamonova V. S., Murza I. G., Pashkov A. N., Ponomareva M. V., Reshetnikov S. I., Christoforov O. L.
Заглавие : Ecological Forms of Black Sea Brown Trout (Salmo trutta labrax) in the Mzymta River as Manifestation of Ontogenetic Plasticity
Колич.характеристики :11 с
Коллективы : Russian Scientific Foundation [16-14-10001]
Место публикации : Russ. J. Dev. Biol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2018. - Vol. 49, Is. 2. - С. 117-127. - ISSN 1062-3604, DOI 10.1134/S1062360418020054. - ISSN 1608-3326(eISSN)
Примечания : Cited References:77. - This study was supported by the Russian Scientific Foundation, project no. 16-14-10001.
Предметные рубрики: ATLANTIC SALMON
POPULATIONS
HISTORY
L.
MIGRATION
SURVIVAL
Ключевые слова (''Своб.индексиров.''): salmonidae--brown trout--trout--ontogenesis--migrations--maturation--phenotypic plasticity--gonads--smolts
Аннотация: Populations of brown trout in the Mzymta River and its tributaries include anadromous (mainly female) and resident (mainly males) fish. Some resident males in the basin of the Mzymty River attain sexual maturity at the age 1+, and resident females mature at the age 2+ or 3+. The maximum age of resident fish is 4+ in the samples studied. Migrations of anadromous brown trout to the sea occur at the ages 1+, 2+, or 3+. Future spawners spend from 1 to 4 years at feeding grounds in the sea. Smolts of the population are characterized by performing not only spring but also autumn migrations to the sea. One smolt specimen has been detected upstream from the dam in the river where spawners of anadromous brown trout do not migrate; this means that the capability for sea migrations persists long in the population represented only by resident specimens of brown trout. The diversity of life cycles and ecological forms in populations of brown trout is not lower than in populations of brown trout in Northern and Western Europe. The comparison of the data obtained with published data makes it possible to come to the conclusion about the high plasticity of ontogenesis of Black Sea brown trout.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shishatskaya E. I., Nikolaeva E. D., Vinogradova O. N., Volova T. G.
Заглавие : Experimental wound dressings of degradable PHA for skin defect repair
Место публикации : J. Mater. Sci. Mater. Med.: Springer New York LLC, 2016. - Vol. 27, Is. 11. - ISSN 09574530 (ISSN) , DOI 10.1007/s10856-016-5776-4
Ключевые слова (''Своб.индексиров.''): biomaterials--cell culture--cells--cytology--enzyme inhibition--fibroblasts--membranes--natural polymers--nonwoven fabrics--polymer films--proteins--stem cells--weaving--electrospun membranes--extracellular matrix protein--fibroblast cells--hydroxyderivative--mesenchymal stem cell--non-woven membranes--wound dressing materials--wound healing process--tissue
Аннотация: The present study reports construction of wound dressing materials from degradable natural polymers such as hydroxy derivatives of carboxylic acids (PHAs) and 3-hydroxybutyrate/4-hydroxybutyrate [P(3HB/4HB)] as copolymer. The developed polymer films and electrospun membranes were evaluated for its wound healing properties with Grafts—elastic nonwoven membranes carrying fibroblast cells derived from adipose tissue multipotent mesenchymal stem cells. The efficacy of nonwoven membranes of P(3HB/4HB) carrying the culture of allogenic fibroblasts was assessed against model skin defects in Wistar rats. The morphological, histological and molecular studies revealed the presence of fibroblasts on dressing materials which facilitated wound healing, vascularization and regeneration. Further it was also observed that cells secreted extracellular matrix proteins which formed a layer on the surface of membranes and promoted the migration of epidermal cells from the neighboring tissues surrounding the wound. The wounds under the P(3HB/4HB) membrane carrying cells healed 1.4 times faster than the wounds under the cell-free membrane and 3.5 times faster than the wounds healing under the eschar (control).The complete wound healing process was achieved at Day 14. Thus the study highlights the importance of nonwoven membranes developed from degradable P(3HB/4HB) polymers in reducing inflammation, enhancing angiogenic properties of skin and facilitating better wound healing process. © 2016, Springer Science+Business Media New York.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Prokopkin I.G., Barkhatov Y.V., Khromechek E.B.
Заглавие : A one-dimensional model for phytoflagellate distribution in the meromictic lake
Колич.характеристики :8 с
Коллективы : Russian Foundation for Basic Research (RFBR) [13-04-01514]; Integrative Project of Siberian Branch of Russian Academy of Sciences [56]
Место публикации : Ecol. Model.: ELSEVIER SCIENCE BV, 2014. - Vol. 288. - P1-8. - ISSN 0304-3800, DOI 10.1016/j.ecolmode1.2014.05.011. - ISSN 1872-7026
Примечания : Cited References: 22. - This work was supported by Russian Foundation for Basic Research (RFBR) No. 13-04-01514 and Integrative Project of Siberian Branch of Russian Academy of Sciences No. 56. The anonymous reviewers are kindly acknowledged for valuable suggestions and criticism.
Предметные рубрики: VERTICAL-DISTRIBUTION
CHLOROPHYLL MAXIMUM
SOUTH SIBERIA
RUSSIA
KHAKASIA
SHIRA
CRYPTOPHYTES
CRYPTOMONAS
CHEMOCLINE
MIGRATION
Ключевые слова (''Своб.индексиров.''): phytoflagellates--meromictic lake--simulation modeling--lake shira
Аннотация: Using mathematical modeling methods, the work investigates possible existence of a phytoflagellate population in the ecosystem of a stratified lake (Lake Shira, Khakasia, Russia). Until this study was carried out, no phytoflagellate population had been detected in the lake, although there had been indirect evidence of the possible presence of a cryptomonad population in this water body. To answer the question if this population may be present in this water body, as the first step of investigation, a mathematical model was developed describing the microorganism biomass dynamics and phytoflagellate relationship with the lake food web. The calculations showed that cryptophytic algae were abundant in the water column layers above the lake chemocline at the beginning of summer but showed low biomass concentrations during other periods of time. In the summer following the construction of the model, samples were collected from Lake Shira, as the next step of the study. A cryptophytic algae population was found in the water column, and the pattern of its distribution in the ecosystem was similar to that predicted by the model. In addition to that, we studied theoretically possible reasons for the early summer development of the population in the deep water layers and found that it was the result of the mixotrophic feeding strategy of cryptomonads and trophic interactions in the food web. The study shows that preliminary modeling of the locational and temporal distribution of populations whose presence in the ecosystem is only suggested by indirect evidence may be useful as a tool for searching for the species in natural ecosystems and as an approach enabling a more accurate description of the food web structure of a water body. (C) 2014 Elsevier B.V. All rights reserved.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Klyuchevskii A.V., Khlebopros R.G.
Заглавие : Coupled large earthquakes in the Baikal rift system: Response to bifurcations in nonlinear resonance hysteresis
Место публикации : Geoscience Frontiers. - 2013. - ISSN 16749871 (ISSN) , DOI 10.1016/j.gsf.2013.01.008
Ключевые слова (''Своб.индексиров.''): baikal rift system--bifurcation--coupled large earthquakes--hysteresis--nonlinear geodynamics--nonlinear oscillator with dissipation--phase portrait
Аннотация: The current lithospheric geodynamics and tectonophysics in the Baikal rift are discussed in terms of a nonlinear oscillator with dissipation. The nonlinear oscillator model is applicable to the area because stress change shows up as quasi-periodic inharmonic oscillations at rifting attractor structures (RAS). The model is consistent with the space-time patterns of regional seismicity in which coupled large earthquakes, proximal in time but distant in space, may be a response to bifurcations in nonlinear resonance hysteresis in a system of three oscillators corresponding to the rifting attractors. The space-time distribution of coupled MLHВ >В 5.5 events has been stable for the period of instrumental seismicity, with the largest events occurring in pairs, one shortly after another, on two ends of the rift system and with couples of smaller events in the central part of the rift. The event couples appear as peaks of earthquake 'migration' rate with an approximately decadal periodicity. Thus the energy accumulated at RAS is released in coupled large events by the mechanism of nonlinear oscillators with dissipation. The new knowledge, with special focus on space-time rifting attractors and bifurcations in a system of nonlinear resonance hysteresis, may be of theoretical and practical value for earthquake prediction issues. Extrapolation of the results into the nearest future indicates the probability of such a bifurcation in the region, i.e., there is growing risk of a pending MВ ?В 7 coupled event to happen within a few years. В© 2013.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Klyuchevskii A.V., Khlebopros R.G.
Заглавие : Coupled large earthquakes in the Baikal rift system: Response to bifurcations in nonlinear resonance hysteresis
Место публикации : Geoscience Frontiers. - 2013. - Vol. 4, Is. 6. - С. 709-716. - ISSN 16749871 (ISSN) , DOI 10.1016/j.gsf.2013.01.008
Ключевые слова (''Своб.индексиров.''): baikal rift system--bifurcation--coupled large earthquakes--hysteresis--nonlinear geodynamics--nonlinear oscillator with dissipation--phase portrait
Аннотация: The current lithospheric geodynamics and tectonophysics in the Baikal rift are discussed in terms of a nonlinear oscillator with dissipation. The nonlinear oscillator model is applicable to the area because stress change shows up as quasi-periodic inharmonic oscillations at rifting attractor structures (RAS). The model is consistent with the space-time patterns of regional seismicity in which coupled large earthquakes, proximal in time but distant in space, may be a response to bifurcations in nonlinear resonance hysteresis in a system of three oscillators corresponding to the rifting attractors. The space-time distribution of coupled MLH > 5.5 events has been stable for the period of instrumental seismicity, with the largest events occurring in pairs, one shortly after another, on two ends of the rift system and with couples of smaller events in the central part of the rift. The event couples appear as peaks of earthquake 'migration' rate with an approximately decadal periodicity. Thus the energy accumulated at RAS is released in coupled large events by the mechanism of nonlinear oscillators with dissipation. The new knowledge, with special focus on space-time rifting attractors and bifurcations in a system of nonlinear resonance hysteresis, may be of theoretical and practical value for earthquake prediction issues. Extrapolation of the results into the nearest future indicates the probability of such a bifurcation in the region, i.e.; there is growing risk of a pending M ? 7 coupled event to happen within a few years.В© 2013, China University of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V. All rights reserved.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E.S., Tolomeev A.P., Drobotov A.V.
Заглавие : Asynchronous vertical migrations of zooplankton in stratified lakes
Место публикации : Contemporary Problems of Ecology. - 2012. - Vol. 5, Is. 4. - С. 443-449. - ISSN 19954255 (ISSN) , DOI 10.1134/S1995425512040166
Ключевые слова (''Своб.индексиров.''): individual migrations--stratified lakes--zooplankton--crustacean--epilimnion--hypolimnion--lake ecosystem--thermocline--vertical migration--zooplankton--siberia--arctodiaptomus salinus--calanoida--copepoda
Аннотация: Asynchronous vertical migrations of calanoid copepods Arctodiaptomus salinus were studied in two stratified lakes in the south of Siberia using the method of two-section enclosures. It was found that the presence of a pronounced thermocline and a depth maximum of phytoplankton (Lake Shira) contributes to the appearance of intensive individual migrations of copepods between areas of the epi- and hypolimnion. В© 2012 Pleiades Publishing, Ltd.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Khromechek E.B., Barkhatov Y.V., Rogozin D.Y.
Заглавие : Densities and distribution of flagellates and ciliates in the chemocline of saline, meromictic Lake Shunet (Siberia, Russia)
Место публикации : Aquatic Ecology. - 2010. - Vol. 44, Is. 3. - С. 497-511. - ISSN 13862588 (ISSN) , DOI 10.1007/s10452-010-9332-x
Ключевые слова (''Своб.индексиров.''): chemocline--ciliate--cryptomonas--deep chlorophyll maximum--diel vertical migrations--meromictic lakes--anoxic conditions--bacterium--biomass--chlorophyll--ciliate--diel migration--flagellate--meromictic lake--population density--saline lake--seasonal variation--vertical distribution--zooplankton--khakassia--lake shunet--russian federation--siberia--bacteria (microorganisms)--ciliophora--cryptomonas--hypotrichia--mastigophora (flagellates)--oligotrichia--phytomastigophorea--prostomatida--scuticociliatia
Аннотация: The vertical and seasonal distributions of the phytoflagellate Cryptomonas spp., and its most common, the planktonic ciliate predators (Oligotrichida, Scuticociliatida, Hypotrichida and Prostomatida) were investigated in chemocline region of small saline, meromictic lake Shunet (Siberia, Russia) during 2003 and 2005. The lake has a pronounced chemocline, with abundance of purple and green sulphur bacteria. Vertical distribution of the Cryptomonas populations near the oxic/anoxic boundary layer was studied at close intervals in water sampled using a hydraulically operated thin-layer sampler. In both summer and winter, Cryptomonas peaked in water stratum 5-10 cm above anoxic zone or in the anoxic zone water column in the chemocline (about 5 m). Ciliate densities and biomass were also much higher in chemocline than in mixolimnion. The range of diurnal migration of Cryptomonas population was not very wide, and it was restricted to layers with high light intensity. The ciliates were sometimes detected above the upper border of the anoxic zone but also several centimetres below this zone. В© 2010 Springer Science+Business Media B.V.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Lepskaya E.V., Sushchik N.N., Makhutova O.N., Kalacheva G.S.
Заглавие : Differences in fatty acid composition between smolts of Sockeye Salmon and adults migrated from sea to lake for spawning
Место публикации : Doklady Biochemistry and Biophysics. - 2010. - Vol. 430, Is. 1. - С. 29-32. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672910010096
Ключевые слова (''Своб.индексиров.''): fatty acid--fresh water--sea water--animal--article--chemistry--cytology--female--male--metabolism--muscle--physiology--population migration--reproduction--salmon--sea--animal migration--animals--fatty acids--female--fresh water--male--muscles--oceans and seas--reproduction--salmon--seawater--oncorhynchus nerka
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Anishchenko O.V., Gladyshev M.I., Kravchuk E.S., Sushchik N.N., Gribovskaya I.V.
Заглавие : Distribution and migration of metals in trophic chains of the Yenisei ecosystem near Krasnoyarsk City
Место публикации : Water Resources. - 2009. - Vol. 36, Is. 5. - С. 594-603. - ISSN 00978078 (ISSN) , DOI 10.1134/S0097807809050121
Ключевые слова (''Своб.индексиров.''): aquatic organisms--atomic absorption--bulk concentration--cd concentrations--cr concentration--ecosystem components--emission spectral analysis--flame photometry--fly larvae--international standards--periphytons--primary producers--waterbodies--aquaculture--cadmium--chromium--ecology--photometry--spectroscopy--spectrum analysis--spectrum analyzers--water absorption--water analysis--concentration (process)--aluminum--aquatic ecosystem--aquatic organism--cadmium--chromium--concentration (composition)--copper--pollutant transport--river pollution--trophic environment--krasnoyarsk [russian federation]--russian federation--yenisei river--bryophyta--decapoda (crustacea)--thymallus arcticus
Аннотация: Methods of atomic absorption, flame photometry, and emission spectral analysis were used to study the concentrations of metals in water and major ecosystem components of the Yenisei River upstream of Krasnoyarsk City (conventionally background area). The mean bulk concentrations of Al and Cu in water exceeded the MAC for water bodies used for fishery. Cu concentration in freshwater shrimp was found to be reliably higher than that in the link of primary producers (periphyton), and Cd concentration in caddis fly larvae was found to exceed that in water moss. The maximal concentrations of metals among the examined aquatic organisms were recorded in periphyton. Cr concentration in the muscles of Arctic grayling was found to exceed some international standards. В© 2009 Pleiades Publishing, Ltd.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Somova L.A., Pechurkin N.S.
Заглавие : The influence of microbial associations on germination of wheat seeds and growth of seedlings under impact of zinc salts
Место публикации : Advances in Space Research. - 2009. - Vol. 43, Is. 8. - С. 1224-1228. - ISSN 02731177 (ISSN) , DOI 10.1016/j.asr.2008.12.008
Ключевые слова (''Своб.индексиров.''): heavy metals--life support system--microbial associations--microorganisms--wheat seeds--concentration (process)--heavy metals--metals--microorganisms--recycling--salts--seed--zinc--adverse effects--biological recycling--growth and development--heavy metal salts--higher plants--investigate effects--life support system--long-term missions--maximum permissible concentrations--microbial associations--pathogenic organisms--plantlets--recycling systems--root systems--wheat seeds--zinc salts--grain (agricultural product)
Аннотация: The life support systems (LSS) for long-term missions are to use cycling-recycling systems, including biological recycling. Higher plants are the traditional regenerator of air and producer of food. They should be used in many successive generations of their reproduction in LSS. Studies of influence of microbial associations on germination of wheat seeds and on growth of seedlings under impact of heavy metals are necessary because of migration of heavy metals in LSS. Microbial associations are able to stimulate growth of plants, to protect them from pathogenic organisms and from toxicity of heavy metal salts. The goal of this work was to investigate effect of microbial associations on the germination of wheat seeds and on the growth of seedlings under impact of different concentrations of ZnSO4. The results of investigations showed that:(1)Zinc salt had an adverse effect on germination of wheat seeds, beginning with concentrations of 8 MPC (Maximum Permissible Concentration) and higher.(2)Microbial associations (concentrations -104 to 107 cells/ml) were able to decrease (partly or completely) the adverse effect of ZnSO4 on germination of wheat seeds.(3)Concentrations (104-107 cells/ml) of microbial associations were able to decrease partly the adverse effect of zinc salts (intervals: from 1 to 32 MPS{cyrillic}) on the growth and development of wheat plantlets during heterotrophic phase.(4)The root system of plants was more sensitive to the adverse effect of ZnSO4 than shoots of plants. В© 2008 COSPAR.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondareva L.G., Bolsunovskii A.Ya.
Заглавие : Speciation of artificial radionuclides 60Co, 137Cs, 152Eu, and 241Am in bottom sediments of the Yenisei river
Место публикации : Radiochemistry. - 2008. - Vol. 50, Is. 5. - С. 547-552. - ISSN 10663622 (ISSN) , DOI 10.1134/S1066362208050196
Аннотация: The speciation of artificial radionuclides 60Co, 137Cs, 152Eu, and 241Am in surface layers of bottom sediments of the Yenisei river, collected within the near zone of impact of the Mining and Chemical Combine (Rosatom), was studied. In these samples the radionuclides 60Co, 152Eu, and 241Am are mainly associated with fractions of humic and fulvic acids. The fraction of 152Eu associated with nonsilicate iron is approximately 92%. The migration capability of radionuclides collected near the Atamanovo settlement decreases in the order 152Eu > 241Am > 60Co > 137Cs. For samples collected near Bol'shoi Balchug settlement, this order is as follows: 152Eu ? 241Am > 60Co > 137Cs. The presence of radionuclide-bearing micro-particles in bottom sediments considerably complicates the distribution of radionuclides, in particular, of 241Am and 137Cs, among migration forms. В© 2008 MAIK Nauka.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondareva L.G., Kalyakina O.P., Bolsunovskii A.Y.
Заглавие : Effect of humic acid on absorption-release processes in the bottom sediments-Yenisei river water system as studied by dual-column ion chromatography and gamma-ray spectrometry
Место публикации : J. Anal. Chem.: MAIK NAUKA/INTERPERIODICA, 2006. - Vol. 61, Is. 4. - С. 354-358. - 5. - ISSN 1061-9348, DOI 10.1134/S1061934806040101
Примечания : Cited References: 11
Аннотация: The effect of humic acid on absorption-release processes in the bottom sediments-Yenisei river water system was studied by dual-column ion chromatography and gamma-ray spectrometry. With the use of ion chromatography, it was found that processes related to the absorption of SO42- and Cl- anions by a solid phase with the release of NO3-, PO43-, and F- to a liquid phase competed in the test systems as the concentration of water-soluble organic carbon (WSOC) was increased. Only the test anions were released in the systems without the introduction of an additional amount of WSOC as humic acid. With the use of gamma-ray spectrometry, it was found that the release of Co-60, Eu-152, and Am-241 radionuclides to the liquid phase in the systems with added humic acid began much earlier than in the system without the addition of humic acid. In this case, the amount of released radionuclides was greater than the amount of radioisotopes released in the system without the addition of humic acid: similar to 25% Am-241, similar to 3% Eu-152, and similar to 0.8% Co-60 in the system with added humic acid or 0.8% Eu-152 and 0.1% Co-60 in the system without the addition of humic acid. The Am-241 radionuclide was not determined in the system without the addition of humic acid. An increase in the concentration of WSOC in the experimental system of bottom sediments-Yenisei river water initiated the release of Co-60, Eu-152, and Am-241 anthropogenic radionuclides from bottom sediments because of the formation of soluble complexes capable of migration. An increase in the concentration of WSOC had almost no effect on the release of K-40 and Cs-137 radionuclides.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A.Ya., Ermakov A.I., Sobolev A.I., Degermendzhi A.G.
Заглавие : First evidence for concentrations of transuranium curium in the Yenisei floodplain ecosystem
Место публикации : Doklady Earth Sciences. - 2006. - Vol. 409, Is. 5. - С. 810-813. - ISSN 1028334X (ISSN) , DOI 10.1134/S1028334X06050308
Ключевые слова (''Своб.индексиров.''): actinide--background level--floodplain--fluvial deposit--radionuclide migration--river pollution--soil pollution--eurasia--krasnoyarsk [russian federation]--russian federation--yenisei river--zheleznogorsk
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondareva L.G., Kalyakina O.P., Bolsunovskii A.Ya.
Заглавие : Effect of humic acid on absorption-release processes in the bottom sediments-Yenisei river water system as studied by dual-column ion chromatography and ?-ray spectrometry
Место публикации : Journal of Analytical Chemistry. - 2006. - Vol. 61, Is. 4. - С. 354-358. - ISSN 10619348 (ISSN) , DOI 10.1134/S1061934806040101
Ключевые слова (''Своб.индексиров.''): absorption--chromatographic analysis--complexation--gamma ray spectrometers--radioisotopes--?-ray spectrometry--absorption-release processes--dual-column ion chromatography--humic acid--organic acids
Аннотация: The effect of humic acid on absorption-release processes in the bottom sediments-Yenisei river water system was studied by dual-column ion chromatography and ?-ray spectrometry. With the use of ion chromatography, it was found that processes related to the absorption of SO 42- and Cl- anions by a solid phase with the release of NO 3- , PO 43- , and F- to a liquid phase competed in the test systems as the concentration of water-soluble organic carbon (WSOC) was increased. Only the test anions were released in the systems without the introduction of an additional amount of WSOC as humic acid. With the use of ?-ray spectrometry, it was found that the release of 60Co, 152Eu, and 241Am radionuclides to the liquid phase in the systems with added humic acid began much earlier than in the system without the addition of humic acid. In this case, the amount of released radionuclides was greater than the amount of radioisotopes released in the system without the addition of humic acid: ?25% 241Am, ?3% 152Eu, and ?0.8% 60Co in the system with added humic acid or 0.8% 152Eu and <0.1% 60Co in the system without the addition of humic acid. The 241Am radionuclide was not determined in the system without the addition of humic acid. An increase in the concentration of WSOC in the experimental system of bottom sediments-Yenisei river water initiated the release of 60Co, 152Eu, and 241Am anthropogenic radionuclides from bottom sediments because of the formation of soluble complexes capable of migration. An increase in the concentration of WSOC had almost no effect on the release of 40K and 137Cs radionuclides. В© Pleiades Publishing, Inc., 2006.
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