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Bioluminescence assays: Effects of quinones and phenols [Text] / N. . Kudryasheva [et al.] // Ecotox. Environ. Safe. - 2002. - Vol. 53, Is. 2. - P. 221-225, DOI 10.1006/eesa.2002.2214. - Cited References: 18 . - ISSN 0147-6513

РУБ Environmental Sciences + Toxicology

Кл.слова (ненормированные):
bioluminescence assays -- quinones -- phenols
Аннотация: The influence of a series of quinones and phenols on bacterial bioluminescence systems was investigated. Three bioluminescence systems used in ecological monitoring were compared: (1) water-soluble; (2) immobilized in starch gel coupled enzyme systems: NADH:FMN-oxidoreductase-luciferase; (3) luminescent bacteria. Bioluminescence inhibition constants of quinones and phenols and bioluminescence induction periods were compared. These kinetic parameters are proportional to quinone concentrations and depend on the quinone redox potential. Different effects of the substances are related to structure and properties of the bioluminescence systems. The set of bioluminescence assays for quinones and phenols monitoring should include two bioluminescence systems: 1 (or 2) and 3. (C) 2002 Elsevier Science (USA).

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
Irkutsk State Univ, Biol Res Inst, Irkutsk 664003, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kudryasheva, N...; Vetrova, E...; Kuznetsov, A...; Kratasyuk, V...; Stom, D...

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Chromosomal abnormalities in roots of aquatic plant Elodea canadensis as a tool for testing genotoxicity of bottom sediments / T. Zotina [et al.] // Ecotoxicol. Environ. Saf. - 2015. - Vol. 122. - P384-391, DOI 10.1016/j.ecoenv.2015.08.021 . - ISSN 0147-6513
Кл.слова (ненормированные):
Anaphase-telophase -- Chromosome damage -- Heavy metals -- Macrophyte -- Radionuclides -- Sediment-contact tests -- Elodea canadensis
Аннотация: Submersed freshwater macrophytes are considered as relevant indicators for use in bulk bottom sediment contact tests. The purpose of this study was to estimate the validity of endpoints of aquatic plant Elodea canadensis for laboratory genotoxicity testing of natural bottom sediments. The inherent level of chromosome abnormalities (on artificial sediments) in roots of E. canadensis under laboratory conditions was lower than the percentage of abnormal cells in bulk sediments from the Yenisei River. The percentage of abnormal cells in roots of E. canadensis was more sensitive to the presence of genotoxic agents in laboratory contact tests than in the natural population of the plant. The spectra of chromosomal abnormalities that occur in roots of E. canadensis under natural conditions in the Yenisei River and in laboratory contact tests on the bulk bottom sediments from the Yenisei River were similar. Hence, chromosome abnormalities in roots of E. canadensis can be used as a relevant and sensitive genotoxicity endpoint in bottom sediment-contact tests. © 2015 Elsevier Inc.

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Держатели документа:
Institute of Biophysics SB RAS, 50/50 Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Zotina, T.; Medvedeva, M.; Trofimova, E.; Alexandrova, Y.; Dementyev, D.; Bolsunovsky, A.

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Mercury, selenium and fish oils in marine food webs and implications for human health / M. O. Gribble [et al.] // J. Mar. Biol. Assoc. U.K. - 2016. - Vol. 96, Is. 1. - P43-59, DOI 10.1017/S0025315415001356 . - ISSN 0025-3154
Кл.слова (ненормированные):
Docosahexaenoic acid -- Ecotoxicology -- Eicosapentaenoic acid -- Fish oils -- Mercury -- N-3 fatty acids -- Oceans and human health -- OHH -- Public health -- Selenium
Аннотация: Humans who eat fish are exposed to mixtures of healthful nutrients and harmful contaminants that are influenced by environmental and ecological factors. Marine fisheries are composed of a multitude of species with varying life histories, and harvested in oceans, coastal waters and estuaries where environmental and ecological conditions determine fish exposure to both nutrients and contaminants. Many of these nutrients and contaminants are thought to influence similar health outcomes (i.e., neurological, cardiovascular, immunological systems). Therefore, our understanding of the risks and benefits of consuming seafood require balanced assessments of contaminants and nutrients found in fish and shellfish. In this paper, we review some of the reported benefits of fish consumption with a focus on the potential hazards of mercury exposure, and compare the environmental variability of fish oils, selenium and mercury in fish. A major scientific gap identified is that fish tissue concentrations are rarely measured for both contaminants and nutrients across a range of species and geographic regions. Interpreting the implications of seafood for human health will require a better understanding of these multiple exposures, particularly as environmental conditions in the oceans change. © Marine Biological Association of the United Kingdom, 2015.

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Держатели документа:
Department of Preventive Medicine, University of Southern California, Keck School of Medicine, Los Angeles, CA, United States
School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, United States
Department of Environmental Health Sciences, University at Albany School of Public Health, State University of New York, Rensselaer, NY, United States
Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
Department of Veterinary Medicine, College of Natural Science and Mathematics, University of Alaska Fairbanks, Fairbanks, AK, United States
Institute of Biophysics of Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Biological Sciences, Dartmouth College, Hanover, NH, United States

Доп.точки доступа:
Gribble, M. O.; Karimi, R.; Feingold, B. J.; Nyland, J. F.; O'Hara, T. M.; Gladyshev, M. I.; Chen, C. Y.

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Low doses of gamma-radiation induce SOS response and increase mutation frequency in Escherichia coli and Salmonella typhimurium cells / A. Bolsunovsky [et al.] // Ecotoxicol. Environ. Saf. - 2016. - Vol. 134. - P233-238, DOI 10.1016/j.ecoenv.2016.09.009 . - ISSN 0147-6513
Кл.слова (ненормированные):
Absorbed dose -- Ames test -- Dose rate -- Mutation rate -- SOS chromotest -- Ames test -- cell death -- DNA repair -- Escherichia coli -- experimental model -- gamma radiation -- limit of detection -- long term exposure -- mutation rate -- nonhuman -- SOS chromotest -- Bacteria (microorganisms) -- Escherichia coli -- Salmonella typhimurium
Аннотация: This study addresses use of two bacterial test systems (the Ames test and the SOS chromotest) to estimate the effects of low doses of γ-radiation. The most substantial increases in induction of SOS response and mutation frequencies were observed in the first 24 h of exposure to γ-radiation as compared to the cells in the exposure-free control. Gamma-radiation also impaired growth and survival of S. typhimurium cells in the first 24 h. The effects were attenuated at lower exposure doses and at longer exposure times. In the experiments conducted in this study, at 96 h of exposure, the values of some of the γ-radiation effects were lower than the MID (minimum inducing dose) detection limits and, thus, were neglected. Long-term exposure to γ-radiation could also result in combined effects of γ-radiation and the death of cells in the culture. © 2016 Elsevier Inc.

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Держатели документа:
Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
FRC Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
Novosibirsk State University, Novosibirsk, Russian Federation

Доп.точки доступа:
Bolsunovsky, A.; Frolova, T.; Dementyev, D.; Sinitsyna, O.

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