Abstract
Antibiotic resistance is a major problem threatening human beings. The genetic determinants that carry resistance genes can be transmitted in several ways in clinical and food environments. Hence, this research study aimed to investigate the presence of New Delhi metallo-beta-lactamase-1 (blaNDM-1) produced by enterotoxigenic Enterobacter cloacae in both clinical and food samples. Twenty-four isolates of Enterobacter spp. were isolated, seven isolates from food samples and 17 isolates from blood taken from neonates and children (1 day - 10 years old) resident in a children's hospital. Antibiotic susceptibility test to 14 antibiotics was performed for all isolates. Enterotoxigenicity of the clinical and foodborne isolates was detected phenotypically using Suckling mouse bioassay. Genomic deoxyribonucleic acid (DNA) was extracted from the isolated Enterobacter spp. that were detected resistant to imipenem. Polymerase chain reaction (PCR) was used to amplify blaNDM-1 gene followed by sequencing. The results of the bioassay revealed that 64.28% of E. cloacae ssp. cloacae isolates were enterotoxigenic. Two E. cloacae ssp. cloacae were imipenem resistant. This study showed that one isolate from a male child 1 < year was bla NDM-1 positive that was con-firmed by sequencing. This is the first report that revealed blaNDM-1 producing Enterobacter cloacae in Iraq.
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