Navigation Links
Blue light phototherapy kills antibiotic-resistant bacteria, according to new studies
Date:12/16/2013

New Rochelle, NY, December16, 2013--Blue light has proven to have powerful bacteria-killing ability in the laboratory. The potent antibacterial effects of irradiation using light in the blue spectra have now also been demonstrated in human and animal tissues. A series of groundbreaking articles that provide compelling evidence of this effect are published in Photomedicine and Laser Surgery, a peer-reviewed journal published by Mary Ann Liebert, Inc., publishers. The articles are available on the Photomedicine and Laser Surgery website.

"Bacterial resistance to drugs poses a major healthcare problem," says Co-Editor-in-Chief Chukuka S. Enwemeka, PhD, Dean, College of Health Sciences, University of Wisconsin--Milwaukee, in the accompanying Editorial "Antimicrobial Blue Light: An Emerging Alternative to Antibiotics," citing the growing number of deadly outbreaks worldwide of methicillin-resistant Staphylococcus aureus (MRSA). The articles in this issue of Photomedicine and Laser Surgery provide evidence that "blue light in the range of 405-470 nm wavelength is bactericidal and has the potential to help stem the ongoing pandemic of MRSA and other bacterial infections."

In the article "Effects of Photodynamic Therapy on Gram-Positive and Gram-Negative Bacterial Biofilms by Bioluminescence Imaging and Scanning Electron Microscopic Analysis," Aguinaldo S. Garcez, PhD and coauthors show that photodynamic therapy and methylene blue delivered directly into the root canal of a human tooth infected with a bacterial biofilm was able to destroy both Gram-positive and Gram-negative bacteria, disrupt the biofilms, and reduce the number of bacteria adhering to the tooth.

Raymond J. Lanzafame, MD, MBA, and colleagues demonstrated significantly greater bacterial reduction in the treatment of pressure ulcers in mice using a combination of photoactivated collagen-embedded compounds plus 455 nm diode laser irradiation compared to irradiation alone or no treatment. The antibacterial effect of the combined therapy increased with successive treatments, report the authors in the article "Preliminary Assessment of Photoactivated Antimicrobial Collagen on Bioburden in a Murine Pressure Ulcer Model."

In the article "Wavelength and Bacterial Density Influence the Bactericidal Effect of Blue Light on Methicillin-Resistant Staphylococcus aureus (MRSA)," Violet Bumah, PhD and coauthors compared the bacteria-killing power of 405 nm versus 470 nm light on colonies of resistant Staph aureus and how the density of the bacterial colonies could limit light penetration and the bactericidal effects of treatment.


'/>"/>

Contact: Vicki Cohn
vcohn@liebertpub.com
914-740-2100
Mary Ann Liebert, Inc./Genetic Engineering News
Source:Eurekalert  

Related biology news :

1. Environment drives genetics in Evolution Canyon; discovery sheds light on climate change
2. New study highlights key role soil structure plays in water uptake by crops
3. Volatile ecosystems, a natural wind tunnel, volcanic lightning, and stress & strain on Venus
4. Quantum effects help cells capture light, but the details are obscure
5. World Stem Cell Report 2013 highlights expert opinion and state-of-the-art science
6. Climate change may disrupt butterfly flight seasons
7. MU research sheds light on nerve regeneration following spinal cord injury
8. Natures glowing slime: Scientists peek into hidden sea worms light
9. The secrets of a bugs flight
10. Snap to attention: Polymers that react and move to light
11. Plant cell architecture: Growth toward a light source
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Blue light phototherapy kills antibiotic-resistant bacteria, according to new studies
(Date:4/13/2016)... , April 13, 2016  IMPOWER physicians supporting Medicaid ... setting a new clinical standard in telehealth thanks to ... leveraging the higi platform, IMPOWER patients can routinely track ... and body mass index, and, when they opt in, ... convenient visit to a local retail location at no ...
(Date:3/22/2016)... March 22, 2016 ... Sensors Market for Consumer Industry by Type (Image, ... Application (Communication & IT, Entertainment, Home Appliances, ... Forecast to 2022", published by MarketsandMarkets, the ... to reach USD 26.76 Billion by 2022, ...
(Date:3/15/2016)... , March 15, 2016 ... report published by Transparency Market Research "Digital Door Lock Systems ... Forecast 2015 - 2023," the global digital door lock systems ... Mn in 2014 and is forecast to grow at a ... of micro, small and medium enterprises (MSMEs) across the world ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... (PRWEB) , ... April 27, 2016 , ... ... Lamka, PhD to its Scientific Advisory Board. Dr. Lamka will assist PathSensors in ... pathogen detection. , PathSensors deploys the CANARY® test platform for the detection ...
(Date:4/27/2016)... 27, 2016 MedDay, a biotechnology company ... the appointment of Catherine Moukheibir as Chairman of its Board ... Jean Jacques Garaud , who contributed to the rapid ... immediately. Catherine started her career in strategy consulting ... London .  She held C-Suite level roles ...
(Date:4/26/2016)... ... April 26, 2016 , ... The European Patent Office ... as one of three finalists for the European Inventor Award 2016 in the category ... will be announced at a ceremony in Lisbon on June 9th. , The human ...
(Date:4/26/2016)... MD (PRWEB) , ... April 26, 2016 , ... ... a $1.8M Series A round of financing. Healthy investor interest drove significant oversubscription ... portfolio of generic biologics, known as biosimilars, to the advanced preclinical stages. , Chief ...
Breaking Biology Technology: