ArticleBMC infectious diseases2024
Exploring antibiotic-induced persister formation and bacterial persistence genes in clinical isolates from Burkina Faso.
Article in BMC infectious diseases, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundIn addition to antibiotic resistance, persistence is another cause of treatment failure in bacterial infections, representing a significant public health concern. Due to a lack of adequate data on clinical isolates, this study was initiated to investigate persistence in clinical isolates in Burkina Faso.
methodsEighty (80) clinical isolates, including 32 Pseudomonas aeruginosa, 41 Staphylococcus aureus, and 7 Salmonella sp. obtained from clinical laboratories in Burkina Faso, were analyzed to assess their susceptibility to ciprofloxacin and gentamicin, as well as to determine the presence of persistence genes. The effects of ciprofloxacin and gentamicin on persister formation were evaluated by conducting colony counts at 1, 3, 5, 7, and 20 h after exposing the bacteria to high concentrations of these antibiotics.
resultsResults showed high sensitivity to both antibiotics (72.5% for ciprofloxacin and 82.5% for gentamicin). Persister formation occurred in Staphylococcus aureus with gentamicin and in Salmonella sp. with ciprofloxacin, while Pseudomonas aeruginosa did not form persisters. The mazF gene was found in 28.13% of P. aeruginosa and 2.44% of S. aureus isolates, and the hipA gene in 28.57% of Salmonella sp. None of the relE1 or relE2 genes were detected.
conclusionsThe study revealed high sensitivity in clinical bacterial isolates to ciprofloxacin and gentamicin. Staphylococcus aureus and Salmonella sp. showed persister formation under antibiotic stress, with low frequencies of the studied persistence genes. These findings enhance understanding of clinical bacterial behavior and inform strategies against antibiotic-resistant infections.
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