Ultrasensitive and rapid identification of ESRI developer- and piperacillin/tazobactam-resistant Escherichia coli by the MALDIpiptaz test. Issue 1 (31st December 2022)

• Record Type: Journal Article
• Authors: Rodríguez Villodres, Angel; Gálvez Benítez, Lydia; Arroyo, Manuel J.; Méndez, Gema; Mancera, Luis; Vila Domínguez, Andrea; Lepe Jímenez, José Antonio; Smani, Younes
• Is Part Of: Emerging microbes & infections. Volume 11:Issue 1(2022)
• Page Start: 2034
• Page End: 2044
• Publication Date: 2022-12-31
• Subjects: Piperacillin -- tazobactam -- Escherichia coli -- resistance -- beta-lactamase -- beta-lactamase inhibitor -- machine learning -- algorithm; Medical microbiology -- Periodicals; Communicable diseases -- Periodicals; Infection -- Periodicals; 616.9041
• DOI: 10.1080/22221751.2022.2113746
• Languages: English
• ISSNs: 2222-1751

Abstract

ABSTRACT: Background: The excessive use of piperacillin/tazobactam (P/T) has promoted the emergence of P/T-resistant Enterobacterales . We reported that in Escherichia coli, P/T contributes to the development of extended-spectrum resistance to β-lactam/β-lactamase inhibitor (BL/BLI) (ESRI) in isolates that are P/T susceptible but have low-level resistance to BL/BLI. Currently, the detection of P/T resistance relying on conventional methods is time-consuming. To overcome this issue, we developed a cost-effective test based on MALDI-MS technology, called MALDIpiptaz, which aims to detect P/T resistance and ESRI developers in E. coli . Methods: We used automated Clover MS Data Analysis software to analyse the protein profile spectra obtained by MALDI-MS from a collection of 248 E. coli isolates (91 P/T-resistant, 81 ESRI developers and 76 P/T-susceptible). This software allowed to preprocess all the spectra to build different peak matrices that were analysed by machine learning algorithms. Results: We demonstrated that MALDIpiptaz can efficiently and rapidly (15 min) discriminate between P/T-resistant, ESRI developer and P/T-susceptible isolates and allowed the correct classification between ESRI developers from their isogenic resistance to P/T. Conclusion: The combination of excellent performance and cost-effectiveness are all desirable attributes, allowing the MALDIpiptaz test to be a useful tool for the rapid determination of P/T resistance in clinically relevant E. coli isolates.