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Blue Light Destroys Antibiotic-Resistant Staph Infection–As Reported in Photomedicine and Laser
Two common strains of methicillin-resistant Staphylococcus aureus, commonly known as MRSA, were virtually eradicated in the laboratory by exposing them to a wavelength of blue light, in a process called photo-irradiation
By: Mary Ann Liebert, Inc.
Blue Light Destroys Antibiotic-Resistant Staph Infection–
Results Reported in Photomedicine and Laser Surgery Journal
New Rochelle, NY—Two common strains of methicillin-
Chukuka S. Enwemeka, Deborah Williams, Sombiri K. Enwemeka, Steve Hollosi, and David Yens from the New York Institute of Technology (Old Westbury, NY) had previously demonstrated that photo-irradiation using 405-nm light destroys MRSA strains grown in culture. In the current study, “Blue 470-nm Light Kills Methicillin-
The two MRSA populations studied—the US-300 strain of CA-MRSA and the IS-853 strain of HA-MRSA—represent prominent community-acquired and hospital-acquired strains, respectively.
The authors report that the higher the dose of 470-nm blue light, the more bacteria were killed. High-dose photo-irradiation was able to destroy 90.4% of the US-300 colonies and the IS-853 colonies. The effectiveness of blue light in vitro suggests that it should also be effective in human cases of MRSA infection, and particularly in cutaneous and subcutaneous infections.
“It is inspiring that an inexpensive naturally visible wavelength of light can eradicate two common strains of MRSA. Developing strategies that are capable of destroying MRSA, using mechanisms that would not lead to further antibiotic resistance, is timely and important for us and our patients,” says Chukuka S. Enwemeka, PhD, FACSM, Co-Editor-in-
Photomedicine and Laser Surgery is an authoritative peer-reviewed journal published bimonthly in print and online. The Journal provides rapid publication of cutting-edge techniques and research in phototherapy, low level laser therapy (LLLT), and laser medicine and surgery. Reports cover a range of basic and clinical research and procedures in medicine, surgery, and dentistry; they focus on safety issues, new instrumentation, optical diagnostics and activities related to the understanding and applications of biophotonics in medicine. Photomedicine and Laser Surgery is the official journal of the World Association for Laser Therapy (WALT), North American Association for Laser Therapy (NAALT), and International Musculoskeletal Laser Society. Tables of contents and a free sample issue may be viewed online at http://www.liebertpub.com/
Mary Ann Liebert, Inc. (http://www.liebertpub.com), is a privately held, fully integrated media company known for establishing authoritative peer-reviewed journals in many promising areas of science and biomedical research, including Journal of Laparoendoscopic & Advanced Surgical Techniques and Journal of Gynecologic Surgery. Its biotechnology trade magazine, Genetic Engineering & Biotechnology News (GEN), was the first in its field and is today the industry’s most widely read publication worldwide. A complete list of the firm’s 60 journals, books, and newsmagazines is available at www.liebertpub.com
Mary Ann Liebert, Inc. 140 Huguenot St., New Rochelle, NY 10801-5215 www.liebertpub.com
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Mary Ann Liebert, Inc (www.liebertpub.com)