Search Results - "Kasemets, Kaja"

Toxicity of Ag, CuO and ZnO nanoparticles to selected environmentally relevant test organisms and mammalian cells in vitro: a critical review by Bondarenko, Olesja, Juganson, Katre, Ivask, Angela, Kasemets, Kaja, Mortimer, Monika, Kahru, Anne

“…Nanoparticles (NPs) of copper oxide (CuO), zinc oxide (ZnO) and especially nanosilver are intentionally used to fight the undesirable growth of bacteria, fungi…”
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Toxicity of ZnO and CuO nanoparticles to ciliated protozoa Tetrahymena thermophila by Mortimer, Monika, Kasemets, Kaja, Kahru, Anne

“…Abstract The toxic effects of nanoparticles (NPs) of ZnO and CuO to particle-ingesting model organism protozoa Tetrahymena thermophila were evaluated. Nano-ZnO…”
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Toxicity of nanoparticles of CuO, ZnO and TiO₂ to microalgae Pseudokirchneriella subcapitata by Aruoja, Villem, Dubourguier, Henri-Charles, Kasemets, Kaja, Kahru, Anne

“…Toxicities of ZnO, TiO₂ and CuO nanoparticles to Pseudokirchneriella subcapitata were determined using OECD 201 algal growth inhibition test taking in account…”
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Size-dependent toxicity of silver nanoparticles to bacteria, yeast, algae, crustaceans and mammalian cells in vitro by Ivask, Angela, Kurvet, Imbi, Kasemets, Kaja, Blinova, Irina, Aruoja, Villem, Suppi, Sandra, Vija, Heiki, Käkinen, Aleksandr, Titma, Tiina, Heinlaan, Margit, Visnapuu, Meeri, Koller, Dagmar, Kisand, Vambola, Kahru, Anne

“…The concept of nanotechnologies is based on size-dependent properties of particles in the 1-100 nm range. However, the relation between the particle size and…”
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Mechanisms of toxic action of Ag, ZnO and CuO nanoparticles to selected ecotoxicological test organisms and mammalian cells in vitro: A comparative review by Ivask, Angela, Juganson, Katre, Bondarenko, Olesja, Mortimer, Monika, Aruoja, Villem, Kasemets, Kaja, Blinova, Irina, Heinlaan, Margit, Slaveykova, Vera, Kahru, Anne

“…Abstract Silver, ZnO and CuO nanoparticles (NPs) are increasingly used as biocides. There is however increasing evidence of their threat to "non-target"…”
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Toxicity of nanoparticles of ZnO, CuO and TiO2 to yeast Saccharomyces cerevisiae by Kasemets, Kaja, Ivask, Angela, Dubourguier, Henri-Charles, Kahru, Anne

“…The aim of this study was to evaluate the toxic effect of nanosized ZnO, CuO and TiO(2) to Saccharomyces cerevisiae - a widely used unicellular eukaryotic…”
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Biotests and Biosensors for Ecotoxicology of Metal Oxide Nanoparticles: A Minireview by Kahru, Anne, Dubourguier, Henri-Charles, Blinova, Irina, Ivask, Angela, Kasemets, Kaja

“…Nanotechnologies have become a significant priority worldwide. Several manufactured nanoparticles - particles with one dimension less than 100 nm - are…”
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Toxicity of CuO Nanoparticles to Yeast Saccharomyces cerevisiae BY4741 Wild-Type and Its Nine Isogenic Single-Gene Deletion Mutants by Kasemets, Kaja, Suppi, Sandra, Künnis-Beres, Kai, Kahru, Anne

“…A suite of eight tentatively oxidative stress response-deficient Saccharomyces cerevisiae BY4741 single-gene mutants (sod1Δ, sod2Δ, yap1Δ, cta1Δ, ctt1Δ, gsh1Δ,…”
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Toxicity of Silver-Chitosan Nanocomposites to Aquatic Microcrustaceans Daphnia magna and Thamnocephalus platyurus and Naturally Luminescent Bacteria Vibrio fischeri by Sihtmäe, Mariliis, Laanoja, Jüri, Blinova, Irina, Kahru, Anne, Kasemets, Kaja

“…All novel materials should be analyzed for their potential environmental hazard. In this study, the toxicity of different silver-chitosan…”
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Antibacterial Activity of Positively and Negatively Charged Hematite ( α -Fe 2 O 3 ) Nanoparticles to Escherichia coli , Staphylococcus aureus and Vibrio fischeri by Vihodceva, Svetlana, Šutka, Andris, Sihtmäe, Mariliis, Rosenberg, Merilin, Otsus, Maarja, Kurvet, Imbi, Smits, Krisjanis, Bikse, Liga, Kahru, Anne, Kasemets, Kaja

“…In the current study, the antibacterial activity of positively and negatively charged spherical hematite ( -Fe O ) nanoparticles (NPs) with primary size of 45…”
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Synthesis and synergistic antibacterial efficiency of chitosan-copper oxide nanocomposites by Laanoja, Jüri, Sihtmäe, Mariliis, Vihodceva, Svetlana, Iesalnieks, Mairis, Otsus, Maarja, Kurvet, Imbi, Kahru, Anne, Kasemets, Kaja

“…Copper and chitosan are used for biomedical applications due to their antimicrobial properties. In this study, a facile method for the synthesis of…”
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Visible-Light Active Flexible and Durable Photocatalytic Antibacterial Ethylene-co-vinyl Acetate—Ag/AgCl/α-Fe2O3 Composite Coating by Vihodceva, Svetlana, Šutka, Andris, Otsus, Maarja, Vija, Heiki, Grase, Liga, Kahru, Anne, Kasemets, Kaja

“…When particles are mixed in polymer, particle surfaces become passivated by polymer matrix, leading to significantly reduced photocatalytic and, thus, also…”
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Comparison of Toxicity and Cellular Uptake of CdSe/ZnS and Carbon Quantum Dots for Molecular Tracking Using Saccharomyces cerevisiae as a Fungal Model by Färkkilä, Sanni M A, Mortimer, Monika, Jaaniso, Raivo, Kahru, Anne, Kiisk, Valter, Kikas, Arvo, Kozlova, Jekaterina, Kurvet, Imbi, Mäeorg, Uno, Otsus, Maarja, Kasemets, Kaja

“…Plant resource sharing mediated by mycorrhizal fungi has been a subject of recent debate, largely owing to the limitations of previously used isotopic tracking…”
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Atomic layer deposition of titanium oxide films on As-synthesized magnetic Ni particles: Magnetic and safety properties by Uudeküll, Peep, Kozlova, Jekaterina, Mändar, Hugo, Link, Joosep, Sihtmäe, Mariliis, Käosaar, Sandra, Blinova, Irina, Kasemets, Kaja, Kahru, Anne, Stern, Raivo, Tätte, Tanel, Kukli, Kaupo, Tamm, Aile

“…Spherical nickel particles with size in the range of 100–400nm were synthesized by non-aqueous liquid phase benzyl alcohol method. Being developed for…”
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Growth characteristics of Saccharomyces cerevisiae S288C in changing environmental conditions : auxo-accelerostat study by KASEMETS, Kaja, NISAMEDTINOV, Ildar, LAHT, Tiiu-Maie, ABNER, Kristo, PAALME, Toomas

“…The effect of individual environmental conditions (pH, pO(2), temperature, salinity, concentration of ethanol, propanol, tryptone and yeast extract) on the…”
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Modification of A-stat for the characterization of microorganisms by Kasemets, Kaja, Drews, Monika, Nisamedtinov, Ildar, Adamberg, Kaarel, Paalme, Toomas

“…Two novel modifications of continuous culture with gradual change of dilution rate (A-stat): D-stat and auxo-accelerostat were evaluated in the studies of the…”
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Hazard evaluation of polystyrene nanoplastic with nine bioassays did not show particle-specific acute toxicity by Heinlaan, Margit, Kasemets, Kaja, Aruoja, Villem, Blinova, Irina, Bondarenko, Olesja, Lukjanova, Aljona, Khosrovyan, Alla, Kurvet, Imbi, Pullerits, Mirjam, Sihtmäe, Mariliis, Vasiliev, Grigory, Vija, Heiki, Kahru, Anne

“…Plastic is a wide-spread pollutant and must be evaluated for potential adverse effects of its breakdown product, microplastic (≤5 mm) along with its…”
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Changes in the Daphnia magna midgut upon ingestion of copper oxide nanoparticles: A transmission electron microscopy study by Heinlaan, Margit, Kahru, Anne, Kasemets, Kaja, Arbeille, Brigitte, Prensier, Gérard, Dubourguier, Henri-Charles

“…This work is a follow-up of our previous paper ( Heinlaan et al., 2008. Chemosphere 71, 1308–1316) where we showed about 50-fold higher acute toxicity of CuO…”
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A novel method for comparison of biocidal properties of nanomaterials to bacteria, yeasts and algae by Suppi, Sandra, Kasemets, Kaja, Ivask, Angela, Künnis-Beres, Kai, Sihtmäe, Mariliis, Kurvet, Imbi, Aruoja, Villem, Kahru, Anne

“…[Display omitted] •A novel method was introduced to evaluate biocidal efficiency of nanomaterials (NMs).•Exposure to NMs is conducted in deionized…”
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Antimicrobial potency of differently coated 10 and 50 nm silver nanoparticles against clinically relevant bacteria Escherichia coli and Staphylococcus aureus by Kubo, Anna-Liisa, Capjak, Ivona, Vrček, Ivana Vinković, Bondarenko, Olesja M., Kurvet, Imbi, Vija, Heiki, Ivask, Angela, Kasemets, Kaja, Kahru, Anne

“…[Display omitted] •Differently coated 10 and 50 nm nanoAg were synthesised and tested in DI water.•10 nm nanoAg were more soluble and more antibacterial than…”
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