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Novel nanotechnology heals abscesses caused by resistant staph bacteria
Date:12/22/2009

Investigative Dermatology, the interdisciplinary Einstein team showed that NO-containing nanoparticles could clear up superficial skin infections caused by MRSA. The current study of abscesses was designed to learn whether the nanoparticles could combat infections deep in the skin.

The researchers experimentally induced MRSA abscesses in 60 mice. The abscesses were either left untreated, topically treated with "empty" nanoparticles, or topically treated with nanoparticles containing NO and were evaluated four days later.

The microbial concentration in the abscesses of mice treated with NO-containing nanoparticles was significantly reduced compared with abscesses in the other two groups. In addition, the abscesses of mice treated with NO-containing nanoparticles had undergone much more healing, as shown by their improved appearance and by the far greater amounts of collagen (a protein important in maintaining the structure of skin) deposited within them.

The Einstein nanoparticle technology was developed by Joel M. Friedman, M.D., Ph.D., the Young Men's Division Chair of Physiology and professor of physiology & biophysics and of medicine, and Adam Friedman, M.D., currently the chief resident in the division of dermatology of the department of medicine at Montefiore Medical Center, The University Hospital and Academic Medical Center for Einstein.

When introduced on the skin or into the body, the tiny nanoparticles absorb water, swell up, and start releasing their cargo in a sustained manner. The nanoparticles can carry and release a variety of drugs as well as chemicals, including NO.

Produced naturally by cells throughout the body, NO has important biological properties including killing bacteria, healing wounds, and increasing blood flow by dilating blood vessels. "But NO is a very short-lived gas," notes Dr. Joel Friedman, "and, until now, methods to deliver it to targeted tissues in the proper doses have proven el
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Contact: Deirdre Branley
sciencenews@einstein.yu.edu
718-430-3101
Albert Einstein College of Medicine
Source:Eurekalert  

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