M S Alfaresi1, A A Elkoush. 1. Department of Pathology & Laboratory Medicine, Zayed Military Hospital, PO Box 3740, Abu Dhabi, United Arab Emirates. uaenow@eim.ae
Abstract
PURPOSE: This study aimed to develop an improved method for the detection of bacterial SHV-type extended-spectrum β-lactamases (ESBLs). MATERIALS AND METHODS: Our method was based on real-time polymerase chain reaction (PCR) in which the amplification of the product was monitored with a fluorescent probe. This method enabled the detection of bla SHV genes with high degrees of sensitivity and specificity. RESULTS: Based on ESBL phenotyping methods and bla gene DNA sequencing, we identified 240 bla genes from 662 Enterobacteriaceae isolated from clinical culture specimens. Of these 240 isolates, 26 had the bla SHV-28 genotype and three had the bla SHV-1 genotype. With our new real-time PCR assay, we detected 29 out of 29 bla SHV genes in ESBL-producing isolates. CONCLUSION: This method represents a powerful tool for epidemiological studies of SHV ESBLs. Furthermore, it has potential for use in diagnostic microbiology.
PURPOSE: This study aimed to develop an improved method for the detection of bacterial SHV-type extended-spectrum β-lactamases (ESBLs). MATERIALS AND METHODS: Our method was based on real-time polymerase chain reaction (PCR) in which the amplification of the product was monitored with a fluorescent probe. This method enabled the detection of bla SHV genes with high degrees of sensitivity and specificity. RESULTS: Based on ESBL phenotyping methods and bla gene DNA sequencing, we identified 240 bla genes from 662 Enterobacteriaceae isolated from clinical culture specimens. Of these 240 isolates, 26 had the bla SHV-28 genotype and three had the bla SHV-1 genotype. With our new real-time PCR assay, we detected 29 out of 29 bla SHV genes in ESBL-producing isolates. CONCLUSION: This method represents a powerful tool for epidemiological studies of SHV ESBLs. Furthermore, it has potential for use in diagnostic microbiology.
Authors: Samyyia Abrar; Noor Ul Ain; Huma Liaqat; Shahida Hussain; Farhan Rasheed; Saba Riaz Journal: Antimicrob Resist Infect Control Date: 2019-05-22 Impact factor: 4.887