Navigation Links
Plasma treatment zaps viruses before they can attack cells
Date:12/16/2011

Adenoviruses can cause respiratory, eye, and intestinal tract infections, and, like other viruses, must hijack the cellular machinery of infected organisms in order to produce proteins and their own viral spawn. Now an international research team made up of scientists from Chinese and Australian universities has found a way to disrupt the hijacking process by using plasma to damage the viruses in the laboratory environment, before they come into contact with host cells.

The researchers prepared solutions containing adenoviruses and then treated the samples with a low-temperature plasma created by applying a voltage to a gaseous mixture in a syringe. The strong electric field energized electrons that collided with molecules in the gas, generating charged particles and highly reactive species such as oxygen atoms that likely etched away the protein shell of the viruses and damaged or destroyed the viral DNA. When the virus solutions were later added to colonies of embryonic kidney cells, the plasma-treated samples showed much less viral activity, as measured by the amount of a florescent virus protein the infected kidney cells produced. If the virus solution was covered during treatment to maximize plasma-virus interactions, more than 99 percent of the viruses could be deactivated in eight minutes. The technique is described in a paper accepted for publication in the AIP's journal Applied Physics Letters.

Adenoviruses pose life-threatening risks to patients undergoing stem-cell therapy, so the anti-viral plasma treatment may help pave the way to safer therapies, the researchers write. Because plasma jets have multiple biomedical applications, the team is also developing a portable device that generates plasma by using a 12 V battery to decompose and ionize air, says Dr. XinPei Lu at the HuaZhong University of Science and Technology in China and leader of the team. The device might be used in rural areas and battlefields, according to Lu.


'/>"/>
Contact: Catherine Meyers
cmeyers@aip.org
301-209-3088
American Institute of Physics
Source:Eurekalert

Related biology news :

1. How Toxoplasma gondii gets noticed
2. Plasma produces KO cocktail for MRSA
3. Modeling Toxoplasma focus of workshop
4. Toxoplasma gondii spreads in the habitat of the Iberian lynx
5. Atmospheric pressure plasma jet from a grounded electrode
6. Grant advances quark-gluon plasma studies

7. Scripps Research scientists redefine the role of plasma cells in the immune system
8. MIT researchers study the danger of toxoplasma parasites
9. RevaTen platelet-rich plasma shows promise as potential treatment for heart attacks
10. Plasma in bags
11. Ionized plasmas as cheap sterilizers for developing world
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2017)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), ... Report on Form 10-K on Thursday April 13, 2017 with the ... The ... section of the Company,s website at http://www.nxt-id.com  under "SEC Filings," ... 2016 Year Highlights: Acquisition of ...
(Date:4/11/2017)... Research and Markets has announced the addition ... their offering. ... tracking market to grow at a CAGR of 30.37% during the ... 2017-2021, has been prepared based on an in-depth market analysis with ... its growth prospects over the coming years. The report also includes ...
(Date:4/5/2017)... -- The Allen Institute for Cell Science today announces the ... and dynamic digital window into the human cell. The ... of deep learning to create predictive models of cell ... growing suite of powerful tools. The Allen Cell Explorer ... available resources created and shared by the Allen Institute ...
Breaking Biology News(10 mins):
(Date:7/26/2017)... ... July 26, 2017 , ... Vincent R. Burton, MBBS, FRCA, ... licensed by the Bahamas’ National Stem Cell Ethics Committee (NSCEC). , Dr. Burton ... the West Indies. He went on to complete residency training in the United Kingdom ...
(Date:7/26/2017)... ... July 25, 2017 , ... Avery Products ... that enable short-run digital printing, is proud to announce that it has won ... Wizard online software available at avery.com/GHS . The products were recently honored ...
(Date:7/26/2017)... , ... July 25, 2017 , ... ... and manufacturing services that are necessary in the preparation and development of human ... biorepository facility operates under the US Food and Drug Administration’s (FDA) Current Good ...
(Date:7/26/2017)... , ... July 26, 2017 , ... ... company for the improvement of crop productivity and economics for the food, feed ... The scope of the agreement includes the research and development of microbiome-based seed ...
Breaking Biology Technology: