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Volume 22, Number 5—May 2016
Research

Expansion of Shiga Toxin–Producing Escherichia coli by Use of Bovine Antibiotic Growth Promoters

Jong-Chul Kim, Linda Chui, Yang Wang, Jianzhong Shen, and Byeonghwa JeonComments to Author 
Author affiliations: University of Alberta, Edmonton, Alberta, Canada (J.-C. Kim, L. Chui, B. Jeon); Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety at China Agricultural University, Beijing, China (Y. Wang, J. Shen)

Main Article

Figure 6

Induction of stx2 expression by treatment of oxytetracycline (OTC) and chlortetracycline (CTC) in combination with other antibiotics. Escherichia coli O157 harboring Pstx2::gfp was exposed to the following antibiotic combinations that are used in cattle for weight gain and feed efficiency: A) OTC/neomycin (NEO), and B) CTC/sulfamethazine (SMZ). The antibiotic combinations were prepared by mixing the indicated concentrations of each antibiotic. The results show means and SDs of a single represent

Figure 6. Induction of stx2 expression by treatment of oxytetracycline (OTC) and chlortetracycline (CTC) in combination with other antibiotics. Escherichia coli O157 harboring Pstx2::gfp was exposed to the following antibiotic combinations that are used in cattle for weight gain and feed efficiency: A) OTC/neomycin (NEO), and B) CTC/sulfamethazine (SMZ). The antibiotic combinations were prepared by mixing the indicated concentrations of each antibiotic. The results show means and SDs of a single representative experiment with triplicate samples. The experiment was repeated 3 times, and similar results were observed in all experiments. Statistical analysis was performed by using a Student t-test and GraphPad Prism 6 (http://www.graphpad.com/). NS, not significant; RFU, relative fluorescence units.

Main Article

Page created: April 13, 2016
Page updated: April 13, 2016
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