Akademik Veri Yönetim Sistemi
Turk Hijyen ve Deneysel Biyoloji Dergisi, cilt.70, sa.4, ss.185-190, 2013 (Scopus)
Objective: Urinary system infections caused by Candida species are the most common nosocomial infections. Diabetes mellitus, urinary system defects, chronic renal failure, neutopenia, immunsuppressive treatment, and use of antimicrobials of patients increase the incidence of these infections. Antifungal tests should be applied with identification of species for effective treatment. In this study, identification of Candida species isolated from urine and investigation of susceptibility of these strains to amphotericin B, fluconazole, voriconazole and caspofungin by E-test method are aimed to be investigated. Method: 61 Candida strains isolated from urine cultures of hospitalized patients between June-December 2011 are included in the study. Germ tube test, growth on Cornmeal-Tween 80 agar and chylamidospore formation, presence of psudohyphae, carbohydrate fermentation and assimilation tests, urease test and nitrate tests were used to identificate Candida species. The antifungal (amphotericin B, fluconazole, voriconazole, and caspofungin) susceptibility of the identified Candida strains was investigated by E-test (AB Biodisk, Sweden) method. For this method, RPMI 1640 medium with 2% glucose and 1.5% agar (Sigma, USA) was used. The results were evaluated according to manufacturer recommendation. Results: Total of 61 strains were identified as follows; 18 (30%) were C. albicans, 18 (30%) were C. glabrata, 14 (23%) were C. tropicalis, 7 (11%) were C. parapsilosis, 2 (3%) were C. krusei and 2 (3%) were C. kefyr. All of the strains were found as susceptible to amphotericin B, caspofungin, voriconazole and fluconazole except two C. krusei strains resistant to fluconazole and one C. glabrata strain dose-dependant susceptible to fluconazole. Conclusion: In our hospital, C. albicans was the most frequently isolated Candida species from urine cultures, however, C. glabrata was found as the second most frequent species. As a result, in parallel to the increase of patient population who are at risk for Candida infections, the necessity of doing epidemiological studies for identification of species and susceptibility tests including new antifungal agents was concluded.