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:3/22/2016)... PROVO and SANDY, ... Screening Ontario (NSO), which operates the highest sample volume ... testing, and Tute Genomics and UNIConnect, leaders in clinical ... today announced the launch of a project to establish ... testing panel. NSO has been contracted ...
(Date:3/17/2016)... , March 17, 2016 ABI Research, ... forecasts the global biometrics market will reach more ... 118% increase from 2015. Consumer electronics, particularly smartphones, ... fingerprint sensors anticipated to reach two billion shipments ... Dimitrios Pavlakis , Research Analyst at ABI ...
(Date:3/14/2016)... MELBOURNE, Florida , March 14, 2016 ... on the growing mobile commerce market, announces the airing of ... York channels starting the week of March 21 st . ... and CNBC, including its popular Squawk on the Street show. ... company focused on the growing mobile commerce market, announces the ...
Breaking Biology News(10 mins):
(Date:5/25/2016)... ... May 25, 2016 , ... ... issued by the Office of the National Coordinator for Health IT (ONC) outlining ... if clinically relevant data were available when and where it was needed. The ...
(Date:5/25/2016)... ... May 25, 2016 , ... Lady had been battling arthritis ... cruciate ligament in her left knee. Lady’s owner Hannah sought the help of Dr ... veterinary surgeon, to repair her cruciate ligament and help with the pain of Lady’s ...
(Date:5/24/2016)... Israel , May 24, 2016   MedyMatch Technology ... physicians with artificial intelligence, real-time decision support tools in the ... present at the 2016 Israeli Advanced Technology Industries (IATI) BioMed ... Israel,s 15th National Life Sciences and ... at the David Intercontinental Hotel in Tel Aviv, ...
(Date:5/23/2016)... , ... May 23, 2016 , ... The need for blood donations in South Texas ... by the South Texas Blood & Tissue Center, blood donations are on the decline. In ... and they are down 21 percent in South Texas in the last four years alone. ...
Breaking Biology Technology: