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Molecular investigation of exoU and exoY virulence genes in Pseudomonas aeruginosa collected from hospitalized patients in North of Iran:A descriptive-analytical study

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Journal of Acute Disease 2024年第2期13卷 74-80页

作者： Ahmad Reza Moradi Mehrdad Gholami lotfollah davoodi Negar Hajilou Hamid Reza Goli Sana Institute of Higher Education SariIran Department of Medical Microbiology and Virology Faculty of MedicineMazandaran University of Medical SciencesSariIran Antimicrobial Resistance Research Center Faculty of MedicineMazandaran University of Medical SciencesSariIran Molecular and Cell Biology Research Center Faculty of MedicineMazandaran University of Medical SciencesSariIran

Objective:To investigate the frequency of exoU and exoY genes in patients with Pseudomonas aeruginosa ***:In this study,100 clinical isolates of Pseudomonas aeruginosa were collected from patients hospitalized in educational-therapeutic hospitals and were identified using standard microbiological ***,the antibiotic resistance pattern of the isolates was determined by the disk agar diffusion *** bacterial DNAs were extracted by the alkaline lysis ***,the presence of exoU and exoY genes was evaluated by the PCR ***:In this study,47%,72%,29%,39%,40%,and 44%of the isolates were non-susceptible to piperacillin,aztreonam,ceftazidime,imipenem,tobramycin,and ciprofloxacin,*** addition,95%and 93%of the clinical isolates carried the exoU and exoY *** and fecal isolates had both virulence genes,while only one wound isolate had neither ***,all urinary isolates contained the exoY gene and only one isolate lacked the exoU ***,88 isolates simultaneously had both exoU and exoY ***:High prevalence of exoU and exoY genes in this region indicates a significant role of typeⅢsecretion system in pathogenesis of Pseudomonas *** typeⅢsecretion system may be a suitable target to reduce the pathogenicity of this bacterium.

关键词： Pseudomonas aeruginosa exoU exoY Virulence gene TypeⅢsecretion system PCR

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