Molecular investigation of extended-spectrum β-lactamases (ESBLs) genes in the Salmonella isolates obtained from children with acute diarrhea
Journal Title: Journal of Current Biomedical Reports - Year 2020, Vol 1, Issue 1
Abstract
Salmonellosis is an important public health concern among children in worldwide. Extended-spectrum β-lactams (ESBLs) cause resistance to clinically important beta-lactams which are generally used to treat invasive Salmonella infections. Therefore, the aim of this study was to investigate the presence of SHV, TEM and CTX-M genes in different strains of Salmonella isolated from children with acute diarrhea and to determine their resistance profile. In this cross-sectional study, 300 fecal samples were collected from children referred to the Amirkola Children's Hospital, Babol, Iran. Antibiotic susceptibility testing was done according to the CLSI guideline. ESBLs-producing strains were identified using double disk synergy test method on the Mueller-Hinton agar plates. Multiplex-PCR was performed using oligonucleotide specific primers to detect of SHV, TEM and CTX-M genes. In total, 7% (n; 21/300) salmonella were isolated, which 61.9%, 28.6% and 9.5% were Salmonella typhimurium, Salmonella enteritidis and Salmonella typhi, respectively. The prevalence of the ESBL-producing isolates were 52.4%. M-PCR results showed that 42.8%, 38.1% and 14.3% of isolates were carried CTX-M, TEM and SHV genes, respectively. Also, 18.2% of isolates harbored CTX-M, and TEM genes, simultaneously. The high rate of ESBLs-producing Salmonella strains in the pediatric patients is an alarm. It is also recommended that alternative drugs be used with less resistance, which requires further investigation.
Authors and Affiliations
Mohsen Mohammadi, Mohammad Hossein Tayefeh-Arbab, Zohre Baseri, Mojtaba Taghizadeh Armaki, Mohsen Karami, Saman Alhooei, Abazar Pournajaf
Keywords
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