Detection of blaNDM-1 gene in ESBL producing Escherichia coli and Klebsiella pneumoniae isolated from urine samples

  • Sohni Naeem Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
  • Hazrat Bilal Faculty of Health Sciences, Institute of Physical Sciences and Information Technology, Anhui University, Hefei PR, China
  • Hafsah Muhammad Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
  • Muhammad Asif Khan Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
  • Fareeha Hameed Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
  • Sher Bahadur Department of Animal Health, University of Agriculture, Peshawar, Pakistan
  • Tayyab Ur Rehman Department of Animal Health, University of Agriculture, Peshawar, Pakistan
Keywords: blaNDM-1, Carbapenemase, Extended-spectrum-β-lactamase, Metallo-β-lactamase, E. coli, K. pneumoniae

Abstract

Introduction: Enterobacteriaceae such as Escherichia coli and Klebsiella pneumoniae are the most prominent bacterial species resistant to almost all commonly used antibiotics. Carbapenem is one of the last resort drugs for treating such emerging multidrug-resistant bacteria. This study aimed to detect carbapenem-resistant blaNDM-1 gene in ESBL producing E. coli and K. pneumoniae isolates.

Methodology: A total of 190 E. coli and 350 K. pneumoniae isolates were screened for extended spectrumβ-lactamase (ESBL), carbapenemase and metallo β-lactamase (MBL) production via double-disk synergy test (DDST), modified Hodge test and combined-disk diffusion method. The blaNDM-1 gene was detected by PCR and confirmed via Sanger sequencing method.

Results: Of the 540 isolates tested, 71.8% were found to be multidrug-resistant. Overall rate of ESBL-positive isolates were 57.89% E. coli and 31.42% K. pneumoniae. Among ESBL positive isolates, 49.09% E. coli and 40% K. pneumoniae were positive for carbapenemase production whereas MBL production was detected in 29% E. coli and 22% K. pneumoniae isolates. In MBL positive isolates, (37%) E. coli and (40%) K. pneumoniae isolates harboured blaNDM-1 gene. The pair-wise DNA was aligned with the NDM-1 sequence from GenBank. The alignment score was 243 and the blast nucleotide sequencing results showed 97% sequence similarity with the sequences in GenBank for the blaNDM-1 gene.

Conclusions: The blaNDM-1 gene was found to be the most prevalent in urine samples. There is a dire need to conduct screening tests in hospitals and communities to find out the exact prevalence of the blaNDM-1 spread in our population.

Published
2021-04-30
How to Cite
1.
Naeem S, Bilal H, Muhammad H, Khan MA, Hameed F, Bahadur S, Rehman TU (2021) Detection of blaNDM-1 gene in ESBL producing Escherichia coli and Klebsiella pneumoniae isolated from urine samples. J Infect Dev Ctries 15:516-522. doi: 10.3855/jidc.12850
Section
Original Articles