Resistance Pattern of Urinary Tract Infection Bacterial Isolates to Selected Quinolones

ABSTRACT

The Quinolones inhibit bacteria by interacting with DNA topoisomerases (gyrases) of which four subunits (two A and B monomers) have been identified thus; inhibiting bacterial DNA gyrase. High level resistance to quinolones can be produced by serial exposure of bacteria to subinhibitory concentration. A Total of 408 suspected UTI and high vagina swab (HVS) samples were examined for bacteria and the isolates obtained tested against the newer quinolones. Prevalence of Bacterial isolates revealed Escherichia coli 10(92) as the most isolated organism from urine; while Staphylococcus aureus 31(32) was the most isolated species from HVS samples. Bacterial species such as coliforms 55(70) and Klebsiella spp 42(84); equally had high prevalence rate in urine samples. Pseudomonas aeroginosa 19(66) was next to Staphylococcus aureus in terms of prevalence of isolated strains from HVS samples. The resistance pattern observed for these isolates; showed that the strains were least resistant to Ciprofloxacin; followed by Ofloxacin and Perfloxacin; while they were most resistant to Nalidixic acid. There was however no statistical significance P0.001) between the use of Ofloxacin and Perfloxacin; however; ANOVA showed a significant difference (P0.05) between the pattern of Klebsiella spp resistance against Perfloxacin when compared to Proteus vulgaris