Add to favorite
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.


Author: Vera Ivanova

Tags: Nanomaterials     

Next Previous

You might also find interesting:

The Nobel Prize in Physics 1958 Petersburg Chemists Know How to Diagnose Kidney Diseases with Anything Available Luminous Molecules Help to Detect Toxicity of Nanomaterials Russian Scientists Suggest that Asteroids are Blasted When Moving away from the Earth Expeditions To Yamal Funnels

Comment on our site

RSS   twitter   facebook   submit

Bookmark and Share

search on the map
Altai  travel to Russia  Fairs in Moscow  Mercedes-Benz Fashion Week Russia  Novosibirsk Zoo   Yuri Kara  All-Russia Exhibition Center  military historical festival   Russian religion  bus tickets Russia FIFA  Triumphal Square  Samara  Valentina Gagarina  Russian oil companies  Russian emergencies ministry  Visit Russia  the Urals region  Russian business  corruption in Russia  Zlatoust   The Ivanovo Oblast  Moscow cinema  St. Petersburg Museums  Russian opera singers  Festivals in Moscow  Izhevsk  Illarion Golitsyn  Voronezh   Andrey Zvyagintsev  Wind Power  Alexei Navalny  Russian courts  Painting  Exhibitions in Moscow  Alexander Kharitonov  Russian Cinema  Russian tourism  Pavel Sokolov-Skalya  visa to Russia  Echo of Moscow  Russian television  Russian Nature  Music Festivals  Natural Science Exhibitions  Russian events  St. Petersburg  Moscow  Gelendzhik  St. Matrona of Moscow  Russian regions 

Travel Blogs
Top Traveling Sites