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Growth temperature determines titanium dioxide nanoparticles response by Saccha...

Capela-Pires, JM; Alves-Pereira, I; Ferreira, Rui

The environmental levels of titanium dioxide nanoparticles (TiO2-NP), a new material described as ROS generator, has increased in several regions of the earth due its massive industrial use. Thus, the main purpose of this work was to determine the influence of temperature on response to TiO2-NP by S. cerevisiae UE-ME3.The results show that cells grown at 28 ºC show dry weight, protein and glutathione contents h...


Heat shock decrease Saccharomyces cerevisiae UE-ME3 survival exposed to nanopar...

Capela-Pires, JM; Alves-Pereira, I; Ferreira, Rui

The main objective of this study was to evaluate the effect of temperature in Saccharomyces cerevisiae exposed to nanoparticles of titanium dioxide (NP-TiO2), because there are scarces studies to evaluate the toxic effects of NP-TiO2 in eukaryote cells. S. cerevisiae UE-ME3, wild-type yeast, belonging to the Enology laboratory collection of University of Evora


Glucose-6-phosphate dehydrogenase of Saccharomyces cervisiae decreased in prese...

Capela-Pires, JM; Alves-Pereira, I; Ferreira, Rui

The in vivo toxicity of titanium nanoparticles is manifested by the induction of inflammatory states or by the occurrence of geno toxic and cytotoxic effects that usually depend on the particle size and, therefore its surface area, photocatalytic activity and their tendency to aggregate. However we not found studies in the literature on the importance of temperature on the biological effects of nanoparticles in...


Influence of temperature on Saccharomyces cerevisiae UE-ME3 response to titaniu...

Capela-Pires, JM; Alves-Pereira, I; Ferreira, Rui

Titanium dioxide is a polymorphic material which can be found in nature in three mineral phases: rutile, anatase and brookite, the most unstable and of less interest. The form of NP-rutile TiO2 (<100 nm) is described as one of the most toxic compound. While living organisms have been exposed with nanoparticles from millions of years ago and may be adapted to low levels of these materials, the increase of indust...


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