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New antibacterial coating for sutures could reduce infections after surgery

Date:
August 29, 2012
Source:
American Chemical Society
Summary:
Responding to an urgent need for better antibacterial coatings on surgical sutures, scientists are reporting the discovery of a new coating that is almost 1,000 times more effective than the most widely used commercial coating.

Responding to an urgent need for better antibacterial coatings on surgical sutures, scientists are reporting the discovery of a new coating that is almost 1,000 times more effective than the most widely used commercial coating.
Credit: © uwimages / Fotolia

Responding to an urgent need for better antibacterial coatings on surgical sutures, scientists are reporting the discovery of a new coating that is almost 1,000 times more effective than the most widely used commercial coating.

Their report appears in ACS' journal Langmuir.

Professor Gregory Tew, who is from UMass-Amherst, and colleagues explain that infection at the site of surgical incisions is one of the most common post-surgical complications that keep patients hospitalized longer and boost hospital bills. The most common antibiotic coating contains triclosan, but its use in many consumer products over the years has led to the emergence of strains of bacteria that shrug off its effects.

Triclosan also can be absorbed into the body, raising concerns about possible adverse health effects. Another downside to triclosan: It slows the growth of bacteria, but does not actually kill those already present. That's why the scientists turned to PAMBM, a new substance designed from naturally occurring antimicrobial peptides that can kill a wide range of bacteria. And because of the way it works, PAMBM has a very low chance of causing bacterial resistance and the emergence of so-called superbugs.

The report described laboratory tests in which PAMBM greatly reduced the amount of bacteria compared to triclosan. In a head-to-head test with triclosan-coated sutures, those coated with PAMBM were much more effective against bacteria. "As bacterial resistance to current agents continues to increase and with resistance to triclosan now documented, the discovery of new antimicrobial agents that remain active in biomedical device coatings is essential," say the researchers.

The authors acknowledge funding from the National Science Foundation.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Yan Li, Kushi N. Kumar, Jeffrey M. Dabkowski, Meagan Corrigan, Richard W. Scott, Klaus Nόsslein, Gregory N. Tew. New Bactericidal Surgical Suture Coating. Langmuir, 2012; 28 (33): 12134 DOI: 10.1021/la302732w

Cite This Page:

American Chemical Society. "New antibacterial coating for sutures could reduce infections after surgery." ScienceDaily. ScienceDaily, 29 August 2012. <www.sciencedaily.com/releases/2012/08/120829131659.htm>.
American Chemical Society. (2012, August 29). New antibacterial coating for sutures could reduce infections after surgery. ScienceDaily. Retrieved September 15, 2014 from www.sciencedaily.com/releases/2012/08/120829131659.htm
American Chemical Society. "New antibacterial coating for sutures could reduce infections after surgery." ScienceDaily. www.sciencedaily.com/releases/2012/08/120829131659.htm (accessed September 15, 2014).

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