Study Gene Expression of blaOXA-48 andblaVIM-1Genes CarbapenemsResistance in Klebsiella Pneumoniae isolated from urinary tract infections in Baghdad hospital's

Abstract

Klebsiella pneumoniae has emerged as one of the eight most essential causes of urinary tract infection (UTI), with increasing resistance to antibiotics, especially carbapenems. About one hundred-eight urine samples were collected from inpatients and outpatients who attended. They were collected at three Baghdad hospitals: two from Karkh (AL-Yarmouk Hospital and Al-karamu Hospital) and one from Rusafa (AL-Baghdad Educational Hospital). A minimal inhibitory concentration (MIC) test was done using the Microtiter plate method and demonstrated different resistance levels against meropenem antibiotics. Gene expression of blaOXA-48 and blaVIM-1 genes was performed when treated with meropenem antibiotic using the Real-time PCR technique. The study showed that the highest value of gene expression in the blaOXA-48 gene was recorded for the resistant group was (1.8705), and the lowest value of gene expression in the OXA-48 gene before treated with the meropenem group was (1.0312). The gene expression value in the non-treated group was (0.97) control. In contrast, A slight increase in gene expression value for the blaVIM-1 gene was recorded for the meropenem-treated group (1.8705), and the sensitive group had a gene expression value of (1.00). The lowest value was in the gene expression of the meropenem-treated group (1.0312), as well as an increase in the value of the expression. The genotype of the blaVIM-1gene for the meropenem-treated group (1.828) is based on the 2-ΔCt method for both genes. When using the 2-ΔΔCt method, gene expression differed slightly in both genes. When relying on the 2- ΔΔCt method, both genes' gene expression was slightly different. It was concluded that the coexistence of blaVIM-1 and blaOXA-48 genes in four strains of K. pneumoniae indicated widespread VIM-1 and OXA-48 in Baghdad, Iraq. Keywords: Klebsiella Pneumonia, blaOXA-48,and blaVIM-1, UTI infection