Detection of biofilm genes in MDR Staphylococcus aureus isolated from human and cattle urinary tract infections in Babylon Governorate, Iraq
Abstract
Background: Staphylococcus aureus (S. aureus) is a major pathogenic bacterium in veterinary medicine and human health. It is one of the most important bacterial agents causing urinary tract infection (UTI). The increasing incidence of multidrug-resistant and biofilm-forming S. aureus is a great problem today. The aim of the study was to investigate the phenotypic and genotypic aspects of biofilm formation in multiple drug-resistant (MDR) S. aureus isolated from UTI infection in human and cattle in Babylon, Iraq.
Methodology: A total of 168 and 172 urine samples were collected from UTI infection in humans and cattle, respectively, during the period from November 2023 to February 2024. Morphological and biochemical identification was used to diagnose S. aureus. Additional confirmation was performed by the automated Vitek 2 compact system.
Results: Among the 168 human isolates, 24 (14.2%) and 172 cattle isolates, 16 (9.3%) isolates were diagnosed as S. aureus. Genotypically identification of the isolates was performed using the 16s RNA gene. Twenty-two (91.6%) from 24 human source S. aureus isolates and 8 (50%) from 16 animal source S. aureus isolates were found to be MDR according to the Vitek 2 compact system. Results revealed that 19 (86.3%) and 7(87.5%) MDR isolates were phenotypically positive for biofilm production in concern to human and animal source isolates, respectively. Genotypically, three polysaccharide intracellular adhesion genes and one MSCRAMMs (fib) were…
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