Add to favorite
 
123
Subscribe to our Newsletters Subscribe to our Newsletters Get Daily Updates RSS


Luminous Molecules Help to Detect Toxicity of Nanomaterials
November 27, 2017 13:50


Bioluminescent molecules have been isolated from marine bacteria Vibrio fischeri.
Scientists from the Siberian Federal University (SFU) and the Federal Research Center "Krasnoyarsk Scientific Center of the SB RAS" have developed a test system based on bioluminescent molecules to assess the toxicity of nanomaterials, the SFU press service reports.
Luminous molecules were isolated by researchers from marine bacteria Vibrio fischeri. In the future, the technology can be modified for a wider range of nanomaterials. The article with the research results was published in the Toxicology in Vitro journal.
“The method stands out with the ease of use, high sensitivity and quickness of the result”, - the press release reads. Modern nanomaterials, such as, for example, nanotubes and fullerenes, are increasingly used in medicine, perfumes, cosmetics and food industry. As scientists write in their study, these may be toxic, but it is difficult to measure their toxicity due to the properties of the materials themselves – the size, structure, surface properties and chemical composition.
Scientists of SFU suggested using luminous substances from marine luminescent bacteria to detect toxicity. They developed a test system, which is a small disc with molecules of bioluminescent enzymes. Analyzed samples are placed on a disk, and after a few minutes it starts glowing: the brightness of this glow indicates the level of toxicity.
The first results have shown that multi-walled carbon nanotubes exhibit the greatest toxicity. They are followed with single-walled nanotubes and only then fullerenes. However, noticeable toxicity is observed only with the concentrations of substances much higher than those found in nature. However, with the growth of the nanoindustry, carbon materials are already produced artificially in large volumes.
In recent years, carbon nanotubes have been extensively used in a variety of areas - from electronics to the automotive industry. They are graphene “sheets” (i.e. modification of carbon laid in a one atom thick plane) folded into cylinders. In the case of multi-walled tubes, such cylinders can be nested in a different way. Technologies for the artificial synthesis of carbon nanotubes are developing rapidly, and their application is going to expand more and more overtime. Therefore, the task of assessing their toxicity is extremely urgent, since there is still much unknown about the interaction of nanomaterials with living cells, including the human body.


Sources: http://tass.ru 


Author: Vera Ivanova

Tags: Nanomaterials Russian science Russian scientists Russian technologies  

Next Previous

You might also find interesting:

Russian Emercom to Start Monitoring Meteoric Threats Let Bacteria Sleep Health and Aducational Centre - Ebola - Opens in Moscw The Nobel Prize in Literature 1958 Animals that are Now Lost





comments powered by Disqus




Comment on our site


RSS   twitter   facebook   submit

Bookmark and Share


TAGS:
accident  Russian movies  Pavel Chukhrai  Russian scientists  Smolensk  Moscow Aeroexpress   Russian festivals  Mercedes-Benz Fashion Week Russia  St. Petersburg  Russian schools  cosmic rays   Russian science  Tretyakov Gallery  Zenit St. Petersburg  Russian Museums   Polytechnic Museum  Concerts in Saint Petersburg  Moscow  ski tourist route   Cowshed Bowling   Russian oligarchs  Soviet  Mikhail Derzhavin  Exhibitions in Moscow  health  StartTrack  Mausoleum  Olympic Games 2012  Moscow Metro  Russian politics  Concerts in St. Petersburg  Russian tourism  St. Basil's Cathedral  Salavat  Bast Shoes  Filipp Malyavin  Yury Solomin  Russian airlines  Russian parliament  Russian business  Russian economy  Moscow State University  Portraits  Arkhip Kuindzhi  Regional Cuisines  projects  AvtoVAZ   Bashneft  Russian Cinema  Krasnoyarsk 


Travel Blogs
Top Traveling Sites