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:1/12/2017)...  Trovagene, Inc. (NASDAQ: TROV ), a ... that it has signed agreements with seven strategic partners ... Middle East for commercialization of the ... wave of international distribution agreements for Trovagene,s CLIA based ... The initial partners will introduce Trovagene,s liquid biopsy ...
(Date:1/11/2017)... -- Michael Johnson, co-founder of Visikol Inc. a company originally funded with ... to the elite "Forbes 30 Under 30" list in the Science ... 20 fields nationwide to be recognized as a leader in business ... ... a PhD candidate at Rutgers University. Visikol ...
(Date:1/4/2017)... thousands of attendees at this year,s International Consumer Electronics Show (CES), ... devices and services, will be featuring its new line of ULTRA CONNECT ... special CES Exhibit Suite , the new upper arm and wrist smart ... product platform.  Continue Reading ... ...
Breaking Biology News(10 mins):
(Date:1/11/2017)... ... January 11, 2017 , ... ... Research show early promise of the investigational anti-cancer agent tucatinib (formerly ONT-380) against ... previous treatment regimens. Twenty-seven percent of these heavily pretreated patients saw clinical benefit ...
(Date:1/11/2017)... , ... January 11, 2017 , ... ... year and costing healthcare systems more than $23.7 billion, healthcare systems are ... , Among the most common sepsis-causing pathogens are bacteria and the yeast ...
(Date:1/11/2017)... ... 11, 2017 , ... Symbios Technologies, Inc., a ... Science Foundation (NSF) has awarded Symbios a Small Business Innovation Research (SBIR) ... the Symbios Tubular Plasma Reactor™ (TPR™) by scaling the system for first customer ...
(Date:1/11/2017)... 11, 2017  GenVec, Inc. (NASDAQ: ... today that its chief scientific officer, Douglas ...  "AdenoVerse™ platform for translational development of innovative gene ... the upcoming Phacilitate Cell & Gene Therapy World ... Florida.  Dr. Brough,s presentation will highlight the utility ...
Breaking Biology Technology: