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:3/10/2020)... DIEGO (PRWEB) , ... March 10, 2020 , ... ... has joined Cytonus’ Board of Directors. Dr. Narasimhan is Senior Vice President of ... “On behalf of the Board of Directors of Cytonus, we are extremely pleased ...
(Date:3/5/2020)... ... March 05, 2020 , ... ... research, and MGI Tech (MGI), a subsidiary of global genomics leader BGI Group, ... in the United States, Europe and Asia Pacific. , Under the terms ...
(Date:3/4/2020)... ... March 04, 2020 , ... RoosterBio Inc., ... hMSC bioprocess systems, announces today a significant milestone in the regenerative medicine field ... The patient has been treated by RoosterBio’s pharmaceutical customer with an Investigational New ...
Breaking Biology News(10 mins):
(Date:2/21/2020)... (PRWEB) , ... February 20, 2020 , ... ... ensuring supply chain transparency and reassuring consumers that what’s listed on an ingredient ... trademarked ingredients, Nutrition21 has introduced this solution with the adoption of CertainT, which ...
(Date:2/21/2020)... ... February 21, 2020 , ... Pharmaceutical manufacturers are under ... to adapt to new approaches like ‘Industry 4.0’ and continuous manufacturing, combat the ... medicine and therapies. But with an industry with the world’s tightest regulations and ...
(Date:2/19/2020)... MEMPHIS, Tenn. (PRWEB) , ... February 18, 2020 ... ... of orthopedic medical devices, today announced the launch of a new and unified ... desire to tackle the industry’s most complex engineering challenges, as well as an ...
(Date:2/13/2020)... , ... February 12, 2020 , ... ... pharmacovigilance (PV) solutions and services, is adopting Veeva Vault Safety™ as ... a requirement for fast assessment of data, processing of safety information such as ...
Breaking Biology Technology: