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Synthesis and Characterization of Cefotaxime Conjugated Gold Nanoparticles and Their Use to Target Drug-Resistant CTX-M-Producing Bacterial Pathogens.

Abstract：

:Multidrug-resistance due to "β lactamases having the expanded spectrum" (ESBLs) in members of Enterobacteriaceae is a matter of continued clinical concern. CTX-M is among the most common ESBLs in Enterobacteriaceae family. In the present study, a nanoformulation of cefotaxime was prepared using gold nanoparticles to combat drug-resistance in ESBL producing strains. Here, two CTX-M-15 positive cefotaxime resistant bacterial strains (i.e., one Escherichia coli and one Klebsiella pneumoniae strain) were used for testing the efficacy of "cefotaxime loaded gold-nanoparticles." Bromelain was used for both reduction and capping in the process of synthesis of gold-nanoparticles. Thereafter, cefotaxime was conjugated onto it with the help of activator 1-Ethyl-3-(3-dimethylaminopropyl)-carbodiimide. For characterization of both unconjugated and cefotaxime conjugated gold nanoparticles; UV-Visible spectroscopy, Scanning, and Transmission type Electron Microscopy methods accompanied with Dynamic Light Scattering were used. We used agar diffusion method plus microbroth-dilution method for the estimation of the antibacterial-activity and determination of minimum inhibitory concentration or MIC values, respectively. MIC values of cefotaxime loaded gold nanoparticles against E. coli and K. pneumoniae were obtained as 1.009 and 2.018 mg/L, respectively. These bacterial strains were completely resistant to cefotaxime alone. These results reinforce the utility of conjugating an old unresponsive antibiotic with gold nanoparticles to restore its efficacy against otherwise resistant bacterial pathogens. J. Cell. Biochem. 118: 2802-2808, 2017. © 2017 Wiley Periodicals, Inc.

journal_name

J Cell Biochem

journal_title

Journal of cellular biochemistry

authors

Shaikh S,Rizvi SMD,Shakil S,Hussain T,Alshammari TM,Ahmad W,Tabrez S,Al-Qahtani MH,Abuzenadah AM

doi

10.1002/jcb.25929

subject

Has Abstract

pub_date

2017-09-01 00:00:00

pages

2802-2808

issue

eissn

0730-2312

issn

1097-4644

journal_volume

118

pub_type

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Synthesis and Characterization of Cefotaxime Conjugated Gold Nanoparticles and Their Use to Target Drug-Resistant CTX-M-Producing Bacterial Pathogens.