Journal ArticleDOI
Physiological effects of nanoparticles on fish: A comparison of nanometals versus metal ions
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TLDR
It is concluded that nanometals do have adverse physiological effects on fish, and the hazard for some metal NPs will be different to the traditional dissolved forms of metals.About:
This article is published in Environment International.The article was published on 2011-08-01. It has received 359 citations till now. The article focuses on the topics: Metal toxicity.read more
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Immobilized silver nanoparticles enhance contact killing and show highest efficacy: elucidation of the mechanism of bactericidal action of silver
TL;DR: In this study, AgNPs were immobilized on an amine-functionalized silica surface and their bactericidal activity was studied concurrently with the silver release profile over time, concluding that contact killing is the predominant bactericidal mechanism and surface immobilized nanoparticles show greater efficacy than colloidal AgNPS, as well as a higher concentration of silver ions in solution.
Journal ArticleDOI
The antibacterial effects of silver, titanium dioxide and silica dioxide nanoparticles compared to the dental disinfectant chlorhexidine on Streptococcus mutans using a suite of bioassays.
TL;DR: Metal-containing nanomaterials have the potential to be used in dentistry for infection control, but little is known about their antibacterial properties, and Ag NPs were the best disinfectant and performed better than chlorhexidine.
Journal ArticleDOI
Zebrafish as a model system to study toxicology.
Yu-Jie Dai,Yong-Fang Jia,Na Chen,Wan-Ping Bian,Qinkai Li,Yan-Bo Ma,Yan-Ling Chen,De-Sheng Pei +7 more
TL;DR: The authors address the new direction of developing high‐throughput detection of genetically modified transparent zebrafish to open a new window for monitoring environmental pollutants.
Journal ArticleDOI
Nanoparticle toxicity by the gastrointestinal route: evidence and knowledge gaps.
TL;DR: Focus was placed on three categories of nanomaterials: nanometals and metal oxides, carbon-based nanoparticles, and polymer/dendrimers with emphasis on those particles of greatest relevance to gastrointestinal exposures.
Journal ArticleDOI
Impacts of metal and metal oxide nanoparticles on marine organisms.
TL;DR: In marine systems, Me(O)NPs can absorb to micro-organisms with potential for trophic transfer following consumption, and their likely fate here is sedimentation following hetero-aggregation with natural organic matter and/or free anions, putting benthic, sediment-dwelling and filter feeding organisms most at risk.
References
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Journal ArticleDOI
Electrodeposition and characterization of Cu-TiO2 nanocomposite coatings
TL;DR: In this paper, the average crystallite size was calculated by using X-ray diffraction analysis and it was ~32nm for electrodeposited copper and ~33nm for Cu-TiO2 composite coatings.
Journal ArticleDOI
Effects of copper on gill structure and transport function in the rainbow trout, Oncorhynchus mykiss.
TL;DR: The results show that active sodium transport is located on the secondary lamellae, and its entry mechanism is inhibited at that level by cupric ions only, which is in relation to hydromineral balance of the trout.
Book ChapterDOI
Endocrine responses to environmental pollutants
TL;DR: Generalized endocrine responses to stress, common to a wide variety of stressors, involve activation of the hypothalamo-pituitary-interrenal axis resulting in release of corticosteroids and catecholamines.
Journal ArticleDOI
Surface absorption of aluminium by gill tissue and body mucus of rainbow trout, Salmo gairdneri, at the onset of episodic exposure
R. D. Handy,F. B. Eddy +1 more
TL;DR: The results are discussed in terms of the gill and body mucus being major sites of aluminium absorption, and a tentative mechanism for aluminium absorption is discussed.
Journal ArticleDOI
Histological observations on intrahepatocytic copper-containing granules in rainbow trout reared on diets containing elevated levels of copper
TL;DR: Observations show that rainbow trout have the ability to sequester dietary copper in discrete granules in the cytoplasm of hepatocytes, which may suggest that these granules function in the excretion of excess copper in the bile.