NDLI: Copper as an antimicrobial agent against opportunistic pathogenic and multidrug resistant Enterobacter bacteria

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Copper as an antimicrobial agent against opportunistic pathogenic and multidrug resistant Enterobacter bacteria

Content Provider	Springer Nature Link
Author	Tian, Wen Xiao Yu, Shi Ibrahim, Muhammad Almonaofy, Abdul Wareth He, Liu Hui, Qiu Bo, Zhu Li, Bin Xie, Guan lin
Copyright Year	2012
Abstract	Infections by Enterobacter species are common and are multidrug resistant. The use of bactericidal surface materials such as copper has lately gained attention as an effective antimicrobial agent due to its deadly effects on bacteria, yeast, and viruses. The aim of the current study was to assess the antibacterial activity of copper surfaces against Enterobacter species. The antibacterial activity of copper surfaces was tested by overlying 5×10$^{6}$ CFU/ml suspensions of representative Enterobacter strains and comparing bacterial survival counts on copper surfaces at room temperature. Iron, stainless steel, and polyvinylchloride (PVC) were used as controls. The mechanisms responsible for bacterial killing on copper surfaces were investigated by a mutagenicity assay of the D-cycloserin (cyclA gene), single cell gel electrophoresis, a staining technique, and inductively coupled plasma mass spectroscopy. Copper yielded a significant decrease in the viable bacterial counts at 2 h exposure and a highly significant decrease at 4 h. Loss of cell integrity and a significantly higher influx of copper into bacterial cells exposed to copper surfaces, as compared to those exposed to the controls, were documented. There was no increase in mutation rate and DNA damage indicating that copper contributes to bacterial killing by adversely affecting cellular structure without directly targeting the genomic DNA. These findings suggest that copper’s antibacterial activity against Enterobacter species could be utilized in health care facilities and in food processing plants to reduce the bioburden, which would increase protection for susceptible members of the community.
Starting Page	586
Ending Page	593
Page Count	8
File Format	PDF
ISSN	12258873
Journal	Journal of Microbiology
Volume Number	50
Issue Number	4
e-ISSN	19763794
Language	English
Publisher	The Microbiological Society of Korea
Publisher Date	2012-07-21
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Enterobacter opportunistic pathogen multidrug resistant copper antibacterial activity Microbiology
Content Type	Text
Resource Type	Article
Subject	Medicine Microbiology Applied Microbiology and Biotechnology

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