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:8/27/2014)... but deadly disease that exists as five strains, none ... lethal strains is the Sudan ebolavirus (SUDV). Although not ... widespread illness, even as recently as 2012. In a ... Biology , researchers now report a possible therapy that ... John Dye, Sachdev Sidhu, Jonathan Lai and colleagues explain ...
(Date:8/27/2014)... that health advocates, campaigns against trans-fats have largely ... they,re taking aim at sugar for its potential ... policymakers are still wrangling over the best way ... to an article in Chemical & Engineering ... the American Chemical Society. , In the article, ...
(Date:8/27/2014)... Listeria is a dreaded bacterium that can be ... last few weeks, 28 persons in Denmark have been ... in supermarkets. 13 have died. , The bacterium is ... uncanny ability to adapt to changes in its surroundings, ... Together with colleagues from the Department of Biochemistry and ...
Breaking Biology News(10 mins):Potential therapy for the Sudan strain of Ebola could help contain some future outbreaks 2Researchers discover why Listeria bacterium is so hard to fight 2Researchers discover why Listeria bacterium is so hard to fight 3
... local extinction more than a century ago and unable to ... mainland New Zealand are coming home. A new study ... from a small surviving population around remote, sub-Antarctic islands have ... Before the onslaught of 19th century whaling, historical records suggest ...
... anti-retroviral drugs commonly used to treat HIV, particularly in ... according to research published today in the journal ... damage DNA in the patient,s mitochondria the ,batteries, ... why HIV-infected people treated with antiretroviral drugs sometimes show ...
... nature of RNA, researchers at the University of Michigan and ... to search for drugs that target this important molecule. Their ... Chemical Biology . Once thought to be a passive ... a number of other vital roles in the cell, and ...
Cached Biology News:Fighting back from extinction, New Zealand right whale is returning home 2Fighting back from extinction, New Zealand right whale is returning home 3Premature aging caused by some HIV drugs, study shows 2 Hitting moving RNA drug targets 2 Hitting moving RNA drug targets 3
(Date:8/27/2014)... Flagship Biosciences LLC, a leading provider of ... and medical device industries, has announced a laboratory and ... has consolidated its histology and tissue analysis operations from ... just north of Denver. The new addresses are: ... Suite 100, Westminster, CO 80021 , Tissue Image Analysis ...
(Date:8/27/2014)... DUBLIN , Aug. 27, 2014 ... "Global Stable Isotope Ratio Mass Spectrometer Industry Report ... The Global Stable Isotope Ratio Mass Spectrometer Industry Report ... current state of the global isotope ratio mass spectrometer ... of the industry including definitions, classifications, applications and industry ...
(Date:8/27/2014)... MONMOUTH JUNCTION, N.J. , Aug. 27, 2014 /PRNewswire/ ... developing innovative drug delivery technologies, today announced that it ... New Jersey Business & Industry Association,s 2014 Awards ... Finalists were selected by an independent panel of judges ... member company volunteers. Award winners will be honored at ...
(Date:8/27/2014)... FL (PRWEB) August 27, 2014 BIOEQUA, ... applied through the use of a handheld spray, has ... the United States. , The brand began with ... BIOEQUA researchers were surprised to learn that the application ... made extremely small and delivered directly to skin's basal ...
Breaking Biology Technology:Flagship Biosciences Announces Relocation and Expansion 2Global Stable Isotope Ratio Mass Spectrometer Industry Report 2014 2Tris Pharma Selected as an award winner in the New Jersey Business & Industry Association's 2014 Awards for Excellence 2BIOEQUA'S EQUA ESSENTIAL Product Line Redefines Skin Care & Now Available in America 2
... ... , ... (Vocus) September 8, 2009 -- BPG Properties, Ltd. (BPG), one of the ... a 705,000 square foot highly specialized research and development/manufacturing facility in Lansdale, Pennsylvania is ...
... , , Dan Ross to ... Sept. 8 PriceSpective, a value strategy consultancy that provides pricing ... announce that it has hired Dan Ross to open its new ... years of experience working with healthcare companies in both investment banking ...
... , , ATLANTA and ... pets and pollen, as parents prepare for this year,s back to school ... children with nasal allergies ease into the new school year, the My ... tips from a team of indoor and outdoor nasal allergy experts to ...
Cached Biology Technology:BPG Properties, Ltd. Announces 2750 Morris Road in Lansdale, Pennsylvania is for Sale 2BPG Properties, Ltd. Announces 2750 Morris Road in Lansdale, Pennsylvania is for Sale 3PriceSpective Continues Global Expansion With New San Diego Office 2VIDEO: Nasal Allergy Experts Offer Free Advice for Back to School Sneezin' 2VIDEO: Nasal Allergy Experts Offer Free Advice for Back to School Sneezin' 3VIDEO: Nasal Allergy Experts Offer Free Advice for Back to School Sneezin' 4VIDEO: Nasal Allergy Experts Offer Free Advice for Back to School Sneezin' 5VIDEO: Nasal Allergy Experts Offer Free Advice for Back to School Sneezin' 6
...
... Multidizer is designed with a variety of ... - all in one unit. Shake, rock, ... operating compartments allow for hybridization and blotting ... , The upper chamber uses a ...
... sleek design loaded with class-leading features, the 1400 Series ... work is safe and consistent every time you use ... 1400 Series reduces power consumption by as much as ... over the life of the cabinet. Multiply this ...
... Thermo Savant's latest SpeedVac Concentrator, the ... and adds a new modern twist., The ... controller and gauge for optimizing runs; preventing ... to be stopped at the end-users preset ...
Biology Products: