Candida non albicans with a High Amphotericin B Resistance Pattern Causing Candidemia among Cancer Patients

  • Kalantar, Enayatollah (Department of Microbiology and Immunology, School of Medicine, Alborz University of Medical Sciences) ;
  • Assadi, Mojan (Department of Oncology, School of Medicine, Alborz University of Medical Sciences) ;
  • Pormazaheri, Helen (Department of Microbiology and Immunology, School of Medicine, Alborz University of Medical Sciences) ;
  • Hatami, Shiva (Department of Microbiology and Immunology, School of Medicine, Alborz University of Medical Sciences) ;
  • Barari, Maryam Agha (Department of Nursing, School of Nursery and Midwifery, Alborz University of Medical Sciences) ;
  • Asgari, Esfandiar (Educational Supervisor Cancer Institute, Imam Khomeini Hospital, Tehran University of Medical Sciences) ;
  • Mahmoudi, Elaheh (Department of Pathobiology, School of Medicine, Alborz University of Medical Sciences) ;
  • Kabir, Kourosh (Department of Social Medicine, School of Medicine, Alborz University of Medical Sciences) ;
  • Marashi, Seyed Mahmoud Amin (Department of Microbiology and Immunology, School of Medicine, Alborz University of Medical Sciences)
  • 발행 : 2015.01.22


Background: Many scientists have reported Candida species to be of great concern because of the high frequency that they colonize and infect human hosts, particularly cancer patients. Moreover, in the last decades Candida species have developed resistance to many antifungal agents. Based on this, we aimed to identify and determine the prevalence of Candida spp from blood culture bottles among cancer patients and their antifungal resistance pattern. Materials and Methods: From the blood culture bottles isolation and identification of the Candida spp were performed by conventional microbiological techniques. The in vitro antibiotic resistance pattern of the isolates was determined by CLSI guidelines. Genomic DNA was isolated and amplified. Each gene was separated by agar gel electrophoresis. Results: Identification of Candida spp was based on the presence of yeast cells in direct examination, culture and DNA extraction. Of the 68 blood samples collected during the study period (April 2013 to October 2013), five (7.35%) were positive for the presence of Candida spp, 2 (40%) of which were identified as Candida albicans and 3 (60%) were Candida non-albicans. Conclusions: High resistance to amphotricin B was observed among all the Candida non-albicans isolates. Regular investigations into antifungal resistance will help us to get an updated knowledge about their antibiotic resistance pattern which may help the physician in selecting the antibiotics for empirical therapy.


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