Antimicrobial resistance among fungi from patients with urinary tract infections in Ojo, Lagos, Nigeria
1 Department of Microbiology, Faculty of Science, Lagos State University, P.M.B., 0001, Ojo, Lagos, Nigeria.
2 Department of Microbiology, Ekiti State University, P.M.B. 5363, Ado-Ekiti, Nigeria.
Research Article
GSC Biological and Pharmaceutical Sciences, 2021, 14(03), 254-264.
Article DOI: 10.30574/gscbps.2021.14.3.0082
Publication history:
Received on 12 February 2021; revised on 17 March 2021; accepted on 20 March 2021
Abstract:
The incidence of fungal urinary tract infections has risen gradually and has thus constituted a public health challenge. The aim of this study was to determine the prevalence of urinary tract infections by fungi in two health centres in Ojo, Lagos. A total of 200 patients attending the health centers constituting 160 males’ urines and 40 females’ vaginal swabs were recruited for this study. Midstream urine samples and vaginal swabs were aseptically collected and processed using standard mycological techniques. Fungal isolates were identified based on cultural characteristics, lactophenol blue stain, chlamydospore formation, colony colour on CHROM agar Candida medium and API yeast identification. Antifungal susceptibility testing of the isolates was performed by using the Broth dilution and Kirby-Bauer disk diffusion methods using two of the most commonly used antifungal agents. A total of 122 fungal isolates, of which 68 (55.7%) were Candida spp. and 54(44.3%) Aspergillus spp. were recovered. The Candida spp. included 64 (52.5%) C. albicans and 4(3.3%) C. glabrata while Aspergillus spp. included A. flavus, 20(16.4%), A. fumigatus, 24 (19.8%) and A niger, 10(8.2%). The most common fungal pathogens in the urinary tracts of the subjects were Candida albicans and Aspergillus fumigatus. Both C. albicans and A. fumigatus were highly susceptible to both fluconazole and amphotericin B in dimethyl sulphoxide and water (90-100%). Similarly, all Aspergillus spp. were susceptible to both antifungals except A. flavus which showed a slight resistance (10-15%), which appears to be emerging. Both fluconazole and amphotericin B still show high chances of therapeutic efficacy against fungal infections of the urinary tracts.
Keywords:
Fungal Urinary Tract Infection; Aspergillus Spp.; Aspergillus flavus; Candida albicans; Candida glabrata; Fluconazole; Amphotericin B
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