Prevalence and characterization of carbapenemase-producing Escherichia coli from a tertiary care hospital in India

Govindaswamy, Aishwarya; Bajpai, Vijeta; Khurana, Surbhi; Batra, Priyam; Mathur, Purva; Malhotra, Rajesh

doi:10.4103/jgid.jgid_68_18

Cited by 10 publications

(1 citation statement)

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“… 8 Among Enterobacterales, uropathogenic Escherichia coli has been noted as one of the most common and significant ESBL or carbapenemase producers. 9 , 10 While MDR E. coli isolates were previously found mainly in healthcare settings, e.g. causing nosocomial infections, they are increasingly described in the community and primary care.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial resistance in patients with suspected urinary tract infections in primary care in Assam, India

Paul

Anto

Bhardwaj

et al. 2021

JAC-Antimicrobial Resistance

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Objectives We investigated the prevalence and diversity of antimicrobial resistance in bacteria isolated from urine samples of community-onset urinary tract infection (UTI) patients in southern Assam, India. Methods Freshly voided midstream urine samples were collected from patients attending primary healthcare centres, with the patients’ epidemiological data also recorded. Species identification was confirmed using a VITEK 2 compact automated system. Phenotypic confirmation of ESBLs was performed using the combined disc diffusion method (CLSI 2017) and carbapenemase production was phenotypically characterized using a modified Hodge test. Common ESBLs and carbapenem-resistance mechanisms were determined in Escherichia coli isolates using PCR assays. Incompatibility typing of the conjugable plasmids was determined by PCR-based replicon typing; the phylotypes and MLSTs were also analysed. Results A total of 301 (59.7%) samples showed significant bacteriuria along with symptoms of UTI and among them 103 isolates were identified as E. coli of multiple STs (ST3268, ST3430, ST4671 and others). Among them, 26.2% (27/103) were phenotypically ESBL producers whereas 12.6% (13/103) were carbapenemase producers. This study describes the occurrence of diverse ESBL genes—blaCTX-M-15, blaSHV-148, blaPER-1 and blaTEM—and two E. coli isolates carrying the blaNDM-1 carbapenemase gene. ESBL genes were located within transconjugable plasmids of IncP and IncF type whereas blaNDM-1 was carried in an IncFrepB type plasmid. Conclusions This study illustrates the high rate of MDR in E. coli causing UTI in primary care in rural Assam. UTIs caused by ESBL- or MBL-producing bacteria are very difficult to treat and can often lead to treatment failure. Thus, future research should focus on rapid diagnostics to enable targeted treatment options and reduce the treatment failure likely to occur with commonly prescribed antibiotics, which will help to combat antimicrobial resistance and the burden of UTIs.

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Section: Introductionmentioning

confidence: 99%