Navigation Links
Fine-tuning lasers to destroy blood-borne diseases like AIDS
Date:10/31/2007

Physicists in Arizona State University have designed a revolutionary laser technique which can destroy viruses and bacteria such as AIDS without damaging human cells and may also help reduce the spread of hospital infections such as MRSA.

The research, published on Thursday November 1 in the Institute of Physics Journal of Physics: Condensed Matter, discusses how pulses from an infrared laser can be fine-tuned to discriminate between problem microorganisms and human cells.

Current laser treatments such as UV are indiscriminate and can cause ageing of the skin, damage to the DNA or, at worst, skin cancer, and are far from 100 per cent effective.

Femtosecond laser pulses, through a process called Impulsive Stimulated Raman Scattering (ISRS), produces lethal vibrations in the protein coat of microorganisms, thereby destroying them. The effect of the vibrations is similar to that of high-pitched noise shattering glass.

The physicists in Arizona have undertaken experiments to show that the coherent vibrations excited by infrared lasers with carefully selected wavelengths and pulse widths do no damage to human cells, most likely because of the different structural compositions in the protein coats of human cells vis a vis bacteria and viruses.

Professor K. T. Tsen from Arizona State University said, Although it is not clear at the moment why there is a large difference in laser intensity for inactivation between human cells and microorganisms such as bacteria and viruses, the research so far suggests that ISRS will be ready for use in disinfection and could provide treatments against some of the worst, often drug-resistant, bacterial and viral pathogens.

Femtosecond lasers could find immediate application in hospitals as a way to disinfect blood supply or biomaterials and for the treatment of blood-borne diseases such as AIDS and Hepatitis.


'/>"/>

Contact: Joseph Winters
joseph.winters@iop.org
44-020-747-04815
Institute of Physics
Source:Eurekalert

Page: 1

Related biology news :

1. New methods of gene delivery using lasers
2. Invasive parasite destroying fish species
3. Green catalyst destroys pesticides and munitions toxins, finds Carnegie Mellon University
4. Seafloor creatures destroyed by ice action during ice ages
5. Radiation-armed robot rapidly destroys human lung tumors
6. Study reveals how cells destroy faulty proteins in cystic fibrosis
7. Genome info from plant destroyers could save trees, beans and chocolate
8. Notorious cancer gene may work by destroying messenger
9. UC Davis researchers use heated nanoprobes to destroy breast cancer cells in mice
10. Researchers wake up viruses inside tumors to image and then destroy cancers
11. Molecule that destroys bone also protects it, new research shows
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/2/2017)... Summary This report provides all ... and its partnering interests and activities since 2010. ... The Partnering Deals and Alliance since 2010 report provides ... of the world,s leading life sciences companies. ... ensure inclusion of the most up to date deal ...
(Date:2/28/2017)... 2017 News solutions for biometrics, bag drop ... ... 14 to 16 March, Materna will present its complete end-to-end ... travel is a real benefit for passengers. To accelerate the ... passenger touch point solutions to take passengers through the complete ...
(Date:2/22/2017)... -- With the biometrics market to exceed $10 ... that innovative and agile startups must incorporate into ... changing competitive landscape: multifactor authentication (MFA), point-of-sale (PoS), ... "Companies can no longer afford to cut corners ... Pavlakis , Industry Analyst at ABI Research. "Pairing ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... March 23, 2017 NetworkNewsWire Editorial Coverage  ... Cancer ... significant strain on health care systems, in terms of costs ... so too does the development of innovative and efficient therapies ... Among the many types of cancer treatments, a growing number ...
(Date:3/23/2017)... ... March 23, 2017 , ... ... announced the hire of Dr. Sigmund “Sig” Floyd as Vice President ? Global ... and joint development activities. , “Dr. Floyd’s career has spanned 30 years in ...
(Date:3/22/2017)... MONICA, Calif. , March 22, 2017 /PRNewswire/ ... are proud to announce their extended partnership and ... will be headlined by the 21 st ... BIOMEDevice Boston, taking place May 3-4, 2017. ... Advanced Medical Technology Association (ADVAMED) President and CEO, ...
(Date:3/22/2017)... ALBANY, New York , March 22, 2017 /PRNewswire/ ... market is largely fragmented, states a research report by ... Sanofi S.A., Pfizer Inc., Amgen Inc., and AbbVie Inc., ... market in 2015. The prominent players in this market ... to expand their product portfolio, which is likely to ...
Breaking Biology Technology: