Navigation Links
Is nanosilver toxic?
Date:2/28/2013

For his doctoral dissertation Niskanen has been studying several hybrid nanomaterials, i.e. combinations of synthetic polymers and inorganic (gold, silver and montmorillonite) nanoparticles. He will defend his doctoral thesis at the University of Helsinki in April.

Part of the magic of nano-science is that on the scale of a billionth of a metre, matter and materials behave in ways that are not yet known. Neither is it always known what types of effects the nano version of the parent matter will have on its environment.

"Due to the fact that silver in nanoparticle form is bactericidal and also fungicidal and also prevents the reproduction of those organisms, it is now used in various consumer goods ranging from wound dressing products to sportswear," says Niskanen from the Laboratory of Polymer Chemistry at the University of Helsinki, Finland.

While the usefulness of silver has been established, the debate over the toxicity mechanisms of its various forms to microorganisms but also to non-target species continues. Anne Kahru, Head of the Laboratory of Environmental Toxicology at the National Institute of Chemical Physics and Biophysics, Estonia, talks about a whole new field of ecotoxicology: nanoecotoxicology.

So far, little is known about the environmental effects of silver nanoparticles and their toxicity to aquatic organisms. A joint study from the University of Helsinki and the National Institute of Chemical Physics and Biophysics (Tallinn, Estonia), "Toxicity of two types of silver nanoparticles to aquatic crustaceans Daphnia magna and Thamnocephalus platyurus", shows that silver nanoparticles are apparently no more hazardous to aquatic ecosystems than a water-soluble silver salt. The study compared the ecotoxicity of silver nanoparticles and a water-soluble silver salt.

"Our conclusion was that the environmental risks caused by silver nanoparticles are seemingly not higher than those caused by a
'/>"/>

Contact: Jukka Niskanen
jukka.niskanen@helsinki.fi
University of Helsinki
Source:Eurekalert

Page: 1 2 3

Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/14/2015)... , May 14, 2015 Research and Markets ... of the "Fingerprint Sensors Market in Smart Mobile ... This report believes that 2014 was a watershed year ... Apple,s introduction of ,Apple Pay,. Apple gave fingerprint sensors ... mobile payment service. Fingerprint sensors are a must-have feature ...
(Date:5/11/2015)... 11, 2015 Curemark LLC, a privately held ... a new Phase III double blind, randomized, placebo-controlled clinical ... CM-AT, on all children ages 3-8 with Autism. Previously, ... III double blinded clinical trial for CM-AT in children ... the digestive enzyme chymotrypsin. This new trial will help ...
(Date:5/6/2015)... 2015 LifeBEAM, a developer of bio-sensing technology, ... today that they will expand their partnership in bio-sensing ... cycling helmet and the first joint project between the ... in order to give cyclists more style choices and ... and Lazer announced their plan to release a new ...
Breaking Biology News(10 mins):Global Smart Mobile Devices Fingerprint Sensors Market 2015-2019: Key Vendors are Authentec, Validity Sensors, Fingerprint Cards, Next Biometrics Group. IDEX, and Qualcomm 2Curemark, LLC, Launches New Phase III Trial in Expanded Population of Children with Autism 2LifeBEAM and Lazer Announce Expanded Partnership in Bio-Sensing Sports Gear 2LifeBEAM and Lazer Announce Expanded Partnership in Bio-Sensing Sports Gear 3
... involving a genetically modified baculovirus and caterpillar cells scientists ... up a key step in the development of an ... at the 2005 American Society for Microbiology Biodefense Research ... flu pandemic strain. It could happen at any time," ...
... male zebra finch knows only one scratchy tune learned ... when females are listening. But occasionally, the finch might ... emphasizing different notes. , Neurobiologists studying the finch now ... crucial learning circuit in a section of the forebrain ...
... have identified a method of assessing the malignant potential ... to enzyme digestion. The article by Andrew J. Maniotis ... decreases with malignancy and is regulated by the extracellular ... of The American Journal of Pathology and is accompanied ...
Cached Biology News:Influenza vaccine uses insect cells to speed development 2Bird Brains Show How Trial and Error May Contribute to Learning 2Bird Brains Show How Trial and Error May Contribute to Learning 3Study of genomic DNA leads to new advances in cancer diagnostics 2
(Date:5/20/2015)...  Cypher Genomics, Inc., a leading genome informatics ... to apply Cypher,s Coral TM technology to ... response to innovative medicines. The information generated from ... access to the right medicine at the right ... and potentially inform new companion diagnostics.  ...
(Date:5/20/2015)... 19, 2015 Research and Markets ... the "Bone Morphogenetic Proteins Market (Types : ... and Oral - Maxillofacial) - Global Industry Analysis, ... 2022" report to their offering. ... based on the types of recombinant BMPs, applications, ...
(Date:5/20/2015)... Cambridge, MA (PRWEB) May 20, 2015 ... quality transporter assay services for Drug-Drug Interactions (DDI), ... Rhenovia Pharma, a world leader in assessing impact ... Quantitative Systems Pharmacology supported by biosimulation, announced today ... The agreement allows both companies to expand their ...
(Date:5/20/2015)... DENVER , May 20, 2015 /PRNewswire/ ... today announced that it is an official ... Management Executives (CHIME) Cooperative Members Services Program. ... of compliant, managed cloud services and best ... of healthcare CIOs and service providers, enabling ...
Breaking Biology Technology:Cypher Genomics Collaborates with Celgene Corporation to Identify Novel Genomic Biomarkers 2Global Bone Morphogenetic Proteins Market Industry Analysis 2014 - 2022 2Optivia Biotechnology Inc. and Rhenovia Pharma Sign Partnership Agreement 2Optivia Biotechnology Inc. and Rhenovia Pharma Sign Partnership Agreement 3HOSTING Named Partner of the CHIME Cooperative Member Services Program 2HOSTING Named Partner of the CHIME Cooperative Member Services Program 3
... 2011 DRIVE4COPD, the nation,s single largest awareness campaign ... PRWeek,s Healthcare Campaign of the Year 2011.  The ... prestigious honors in the public relations industry, given each ... teams.  Boehringer Ingelheim Pharmaceuticals, Inc. is the founding sponsor ...
... BioStorage Technologies, a global leader in scientific asset management, ... appointment of Piet Smet as Director of Business Development ... Technologies with more than 20 years of experience in ... In his new role, Smet will be responsible for ...
... The Japanese nuclear crisis has caused a surge ... only in Japan, but as far away as California, ... does not provide generalized radiation protection because it only ... with orders as the radiation hysteria mounts. ...
Cached Biology Technology:DRIVE4COPD Wins PRWeek Healthcare Campaign of the Year 2011 2DRIVE4COPD Wins PRWeek Healthcare Campaign of the Year 2011 3DRIVE4COPD Wins PRWeek Healthcare Campaign of the Year 2011 4BioStorage Technologies Appoints New Director of Business Development for European Operations 2Shortages of Potassium Iodide as Radiation Panic Drives Demand 2
... Affinity Life Sciences can provide custom microplate coating using ... washes a variety of plate formats. We can also accommodate ... volume range of 0.5-320 L):, , ... 96 well microplate, ...
...
... the first biological reagent that ... and not just by inhibiting ... anti-mycoplasma agent that can be ... directly. The cytotoxicity of Mynox ...
Mynox is intended for research use only. Mynox is used for the elimination of Mycoplasma and Acholeplasma in cell and virus cultures, and other biologicals....
Biology Products: