Diagnosing Antibiotic Resistance Using Nucleic Acid Enzymes and Gold Nanoparticles. Abdou Mohamed, M. A., Kozlowski, H. N., Kim, J., Zagorovsky, K., Kantor, M., Feld, J. J., Mubareka, S., Mazzulli, T., & Chan, W. C. W. ACS Nano, 15(6):9379–9390, June, 2021. Publisher: American Chemical Society
Diagnosing Antibiotic Resistance Using Nucleic Acid Enzymes and Gold Nanoparticles [link]Paper  Diagnosing Antibiotic Resistance Using Nucleic Acid Enzymes and Gold Nanoparticles [pdf]Paper  doi  abstract   bibtex   7 downloads  
The rapid and accurate detection of antimicrobial resistance is critical to limiting the spread of infections and delivering effective treatments. Here, we developed a rapid, sensitive, and simple colorimetric nanodiagnostic platform to identify disease-causing pathogens and their associated antibiotic resistance genes within 2 h. The platform can detect bacteria from different biological samples (i.e., blood, wound swabs) with or without culturing. We validated the multicomponent nucleic acid enzyme–gold nanoparticle (MNAzyme-GNP) platform by screening patients with central line associated bloodstream infections and achieved a clinical sensitivity and specificity of 86% and 100%, respectively. We detected antibiotic resistance in methicillin-resistant Staphylococcus aureus (MRSA) in patient swabs with 90% clinical sensitivity and 95% clinical specificity. Finally, we identified mecA resistance genes in uncultured nasal, groin, axilla, and wound swabs from patients with 90% clinical sensitivity and 95% clinical specificity. The simplicity and versatility for detecting bacteria and antibiotic resistance markers make our platform attractive for the broad screening of microbial pathogens.

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