Laboratory Mycological Study of Visceral Fungal Infection in Tehran, Iran

Authors
Marzieh Hamedifard 1
Seyed Jamal Hashemi 1
Roshanak Daie Ghazvini 1
Mahdi Zareei 2
Leila Hosseinpour 1
Zeinab Borjian Boroujeni 1
1 Department of Medical Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, IR Iran
2 Department of Health, Rescue and Treatment of I. R. Iran Police Force, Tehran, Iran
Abstract
Background: Many comprehensive epidemiological studies have been done about fungal infections, which areone of the publichealth and therapeutic problemsin different communities. Since prevalence rate of fungal diseases and their etiological agents are changing over time,the aim of this study was to provide additional information about visceral fungal infections (VFIs) in order to understand the ways of their dissemination, to prevent disease transmission, to eliminate contamination sources and predisposing factors, and to provide effective ways for their treatment.
Materials and Methods: Samples were taken from the lesion of patients referred to medical mycology laboratory of Tehran University of Medical Sciences from 2014 to 2015. After providing direct wet mount of Potassium hydroxide (KOH) smears from these samples and samples sent from other medical centers, culturing on Sabouraud Dextrose agar with chloramphenicol (SC) and brain heart infusion agar (BHI) media was performed. After growth, species were identified.
Results: From a total of 295 suspected samples, VFI was proved in 69 cases (23%). Aspergillosis was the most prevalent infection among VFIs. Candidiasis, cryptococcosis and mucormycosis were in the late orders, respectively. Two patients were also infected by Trichosporon. The predominant species in aspergillosis infections was Aspergillus flavus, and the predominant species in candidiasis infections was Candida albicans.
Conclusion: According to the obtained results on the prevalence rate and incidence of VFIs between male and female patients in different age groups and also by taking into account the prevalent type of fungi and infectious site of patients’ bodies, it is possible to take appropriate action for the prevention and treatment of these kinds of diseases by using the important keys of these results to research and study etiological and underlying factors involved in these diseases.

Keywords

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