Molecular Basis for Adhesion and Biofilm Formation in Urinary Tract Infections
Abstract
Bacterial biofilms play an important role in urinary tract infections (UTIs), being responsible for persistence infections and drug resistance. Several adhesion factors are involved in attachment of bacterial cells to the urinary tract and biofilm development. Although the distribution of pathogens that cause UTIs is changing. More important is the increase in resistance to some antimicrobial agents. This study aimed to evaluate the molecular basis for adhesion and biofilm formation by the pathogens associated with UTI in ATBUTH Bauchi State, Nigeria. A random sampling method was used to select study participants. Clean catch urine samples of inpatient and outpatient with cases of UTI were collected and bacteriologically analyzed using standard microbiological procedures. Twenty-three of the bacteria isolates were detected to form biofilm which were further identified and antimicrobial susceptibility testing carried out using Vitek 2. Further analysis by PCR for biofilm and adhesion genes detected sfa, mrpA, mrKA and bap genes while ica gene was weakly detected. The most prevalent isolates were Staphylococcus aureus, Proteus mirabilis, Escherichia coli, Salmonella Typhi and Klebsiella pneumoniae. Our findings show that some of the isolated bacteria were susceptible to ampicillin and ceftriaxone but a significant number of them are multi-drug resistant.
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