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Broad spectrum antimicrobial activity of functionalized polyanilines

Paper ID Volume ID Publish Year Pages File Format Full-Text
677 57 2011 6 PDF Available
Title
Broad spectrum antimicrobial activity of functionalized polyanilines
Abstract

The antimicrobial properties of conductive functionalized polyanilines (fPANI) were investigated by exploring their interaction with bacterial cells. In sharp contrast to polyaniline (PANI), lower concentrations of fPANI were needed to strongly inhibit the growth of wild-type Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus, as well as several antibiotic-resistant clinical pathogens. To gain an insight into how fPANI have an impact on cellular physiology we used a whole genome expression study in the model E. coli MG1655 strain exposed to a representative fPANI. The expression levels of 218 (∼5.1%) genes changed significantly. Moreover, we found that certain oxidative damage-responsive genes were strongly induced, while genes potentially involved in energy metabolism and transport and in forming bacterial cell walls and stress-resistant cellular communities (biofilms) were repressed. Taken together, our results appear to indicate that the antimicrobial effects of fPANI, in part at least, might stem from their ability to target the operations of multiple and diverse cellular processes, and suggest that fPANI could be useful ingredients for biomaterials used in the development of food packaging and medical devices.

Keywords
Conducting polymers; Bacteria; Gene expression; Antimicrobial
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 7, Issue 12, December 2011, Pages 4204–4209
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us