Journal ArticleDOI
Oxidative stress responses of Daphnia magna exposed to TiO2 nanoparticles according to size fraction
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TLDR
Biochemical level observations suggested that TiO(2) NP toxicity was mediated by reactive oxygen species (ROS) generation via oxidative stress in D. magna.About:
This article is published in Science of The Total Environment.The article was published on 2010-04-15. It has received 213 citations till now. The article focuses on the topics: Daphnia magna & Superoxide dismutase.read more
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Journal ArticleDOI
Titanium dioxide in our everyday life; is it safe?
TL;DR: Until relevant toxicological and human exposure data that would enable reliable risk assessment are obtained, TiO2 nanoparticles should be used with great care.
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Ultrasonic dispersion of nanoparticles for environmental, health and safety assessment--issues and recommendations.
TL;DR: Survey potential sonication effects that can alter the physicochemical or biological properties of dispersed nanomaterials and discuss methods to mitigate these effects, and propose a method for standardizing the measurement of sonication power to facilitate reproducibility of studies involving engineered nanoparticle suspensions obtained via sonication.
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Ecotoxicity of nanosized TiO2. Review of in vivo data
TL;DR: The aim, to identify the biologically important characteristics of the nanoparticles that have most biological significance, was unsuccessful, no discernable correlation between primary particle size and toxic effect being apparent.
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Adverse effects of microplastics and oxidative stress-induced MAPK/Nrf2 pathway-mediated defense mechanisms in the marine copepod Paracyclopina nana.
Chang-Bum Jeong,Hye-Min Kang,Min-Chul Lee,Duck-Hyun Kim,Jeonghoon Han,Dae-Sik Hwang,Sami Souissi,Su Jae Lee,Kyung-Hoon Shin,Heum Gi Park,Jae-Seong Lee +10 more
TL;DR: This study provides the first insight into the mode of action in terms of microplastic-induced oxidative stress and related signaling pathways in P. nana, and proposes an adverse outcome pathway for microplastics exposure that covers molecular and individual levels.
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Toxicity of various silver nanoparticles compared to silver ions in Daphnia magna
Saba Asghari,Saba Asghari,Seyed Ali Johari,Seyed Ali Johari,Ji Hyun Lee,Yong Seok Kim,Yong Bae Jeon,Hyun Jung Choi,Min Chaul Moon,Il Je Yu +9 more
TL;DR: Silver nanoparticles should be classified according to GHS as "category acute 1" to Daphnia neonates, suggesting that the release of nanosilver into the environment should be carefully considered.
References
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A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding
TL;DR: This assay is very reproducible and rapid with the dye binding process virtually complete in approximately 2 min with good color stability for 1 hr with little or no interference from cations such as sodium or potassium nor from carbohydrates such as sucrose.
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Free radicals in biology and medicine
TL;DR: 1. Oxygen is a toxic gas - an introduction to oxygen toxicity and reactive species, and the chemistry of free radicals and related 'reactive species'
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Methods of Enzymatic Analysis
TL;DR: Methods of enzymatic analysis, Methods of enzymes analysis, the authors, Methods of enzyme analysis, enzymatics, methods of enzymes, and methods of analysis, method of enzymes.
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Glutathione S-transferases. The first enzymatic step in mercapturic acid formation.
TL;DR: The purification of homogeneous glutathione S-transferases B and C from rat liver is described, and only transferases A and C are immunologically related.
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Nanomaterials in the environment: Behavior, fate, bioavailability, and effects
Stephen J. Klaine,Pedro J. J. Alvarez,Graeme E. Batley,Teresa F. Fernandes,Richard D. Handy,Delina Y. Lyon,Shaily Mahendra,Mike J. McLaughlin,Jamie R. Lead +8 more
TL;DR: This review critiques existing nanomaterial research in freshwater, marine, and soil environments and illustrates the paucity of existing research and demonstrates the need for additional research.