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Hedayati MT, Taghizadeh-Armaki M, Zarrinfar H, Hoseinnejad A, Ansari S, Abastabar M, Er H, Özhak B, Öğünç D, Ilkit M, Seyedmousavi S. Discrimination of Aspergillus flavus from Aspergillus oryzae by matrix-assisted laser desorption/ionisation time-of-flight (MALDI-TOF) mass spectrometry. Mycoses 2019; 62:1182-1188. [PMID: 31556203 DOI: 10.1111/myc.13010] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 09/18/2019] [Accepted: 09/20/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Aspergillus flavus is a major cause of severe non-invasive fungal infections in the Middle Eastern countries. However, it is difficult to distinguish A flavus from A oryzae. OBJECTIVES To assess the potential of matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF MS) in discriminating between A flavus and A oryzae and compare it with β-tubulin gene sequencing. METHODS We used the Bruker Daltonik MALDI-TOF MS system to analyse 200 clinical and environmental A flavus isolates and one A pseudonomius and one A alliaceus (Aspergillus section Flavi) isolate a priori identified as such by sequencing of the β-tubulin gene. RESULTS All 200 A flavus isolates were identified at the genus level and 176 (88%) at the species levels by MALDI-TOF MS based on the spectral log-scores (≥2.0 and 1.7-1.99, respectively); among them, only 18 (10.2%) were confirmed as A flavus, whereas 35 (19.9%) were identified as A oryzae and 123 (69.9%) as A flavus/A oryzae. Aspergillus pseudonomius and A alliaceus were misidentified as A flavus and A parasiticus with log-score values of 1.39 and 1.09, respectively. CONCLUSIONS The results indicate that the commercially available Bruker Daltonik MALDI-TOF MS score database cannot separate A flavus and A oryzae species. We also showed that establishment of an in-house library is a useful tool to discriminate closely related Aspergillus species, including A flavus and A oryzae.
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Affiliation(s)
- Mohammad T Hedayati
- Invasive Fungi Research Center, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mojtaba Taghizadeh-Armaki
- Department of Medical Parasitology and Mycology, School of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Hossein Zarrinfar
- Allergy Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Akbar Hoseinnejad
- Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Saham Ansari
- Department of Medical Parasitology and Mycology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahdi Abastabar
- Invasive Fungi Research Center, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Halil Er
- Department of Microbiology, Faculty of Medicine, University of Akdeniz, Antalya, Turkey
| | - Betil Özhak
- Department of Microbiology, Faculty of Medicine, University of Akdeniz, Antalya, Turkey
| | - Dilara Öğünç
- Department of Microbiology, Faculty of Medicine, University of Akdeniz, Antalya, Turkey
| | - Macit Ilkit
- Division of Mycology, Department of Microbiology, Faculty of Medicine, University of Çukurova, Adana, Turkey
| | - Seyedmojtaba Seyedmousavi
- Invasive Fungi Research Center, Mazandaran University of Medical Sciences, Sari, Iran.,Center of Expertise in Microbiology, Infection Biology and Antimicrobial Pharmacology, Tehran, Iran.,Microbiology Service, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD, USA
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Omran SM, Taghizadeh-Armaki M, Zarrinfar H, Hedayati MT, Abastabar M, Moqarabzadeh V, Ansari S, Saber S, Hoseinnejad A, Miri A, Verweij PE, Seyedmousavi S. In-vitro antifungal susceptibility testing of lanoconazole and luliconazole against Aspergillus flavus as an important agent of invasive aspergillosis. J Infect Chemother 2018; 25:157-160. [PMID: 30241879 DOI: 10.1016/j.jiac.2018.07.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 06/23/2018] [Accepted: 07/29/2018] [Indexed: 11/25/2022]
Abstract
INTRODUCTION The incidence of Aspergillus infections has recently increased remarkably in certain tropical and sub-tropical countries, with Aspergillus flavus being identified as the leading cause of infections after A. fumigatus. Lanoconazole (LAN) and luliconazole (LUL) are currently approved for topical treatment of cutaneous fungal infections. We aimed the in-vitro antifungal susceptibility testing of two imidazole, LAN and LUL against A. flavus. METHODS One hundred and eighty-seven clinical and environmental A. flavus were tested originating from different climate zones of Iran between 2008 and 2015. The identification of all isolates was confirmed by using PCR-sequencing of β-tubuline ribosomal DNA gene. In-vitro antifungal susceptibility test was performed using CLSI guidelines against LAN, LUL, itraconazole (ITC), voriconazole (VRC), posaconazole (POS), Isavuconazole (ISA), amphotericin B (AMB), 5-flucytosine (5FC), caspofungin (CAS) and anidulafungin (AFG). The minimum inhibitory concentration (MIC) and minimum effect concentration (MEC) values were evaluated according to CLSI M38-A2 guidelines. RESULTS The geometric mean MICs for tested antifungals, in increasing order, were: 0.009 μg/mL for LUL (ranging from 0.004 to 0.062), 0.02 μg/mL for LAN (ranging from 0.004 to 0.125), POS (0.10), ISA (0.16), ITC (0.24), VRC (0.27), AMB (1.8) and 5FC (63.06) μg/mL. The mean value of MECs for AFG and CAS were 0.06 and 0.07, respectively. CONCLUSION Overall, LUL and LAN showed the lowest MIC against all isolates of A. flavus. Further studies are required to evaluate the in-vivo efficacy of these agents, and the possibility of using these agents in systemic infections.
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Affiliation(s)
- Saeed Mahdavi Omran
- Department of Medical Mycology and Parasitology, School of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Mojtaba Taghizadeh-Armaki
- Department of Medical Mycology and Parasitology, School of Medicine, Babol University of Medical Sciences, Babol, Iran; Invasive Fungi Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hossein Zarrinfar
- Allergy Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad T Hedayati
- Invasive Fungi Research Center, Mazandaran University of Medical Sciences, Sari, Iran; Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Mahdi Abastabar
- Invasive Fungi Research Center, Mazandaran University of Medical Sciences, Sari, Iran; Department of Medical Mycology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Vahid Moqarabzadeh
- Department of Biostatistics, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran
| | - Saham Ansari
- Department of Parasitology and Mycology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sasan Saber
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Akbar Hoseinnejad
- Invasive Fungi Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ali Miri
- School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Paul E Verweij
- Department of Medical Microbiology, and Center of Expertise in Mycology Radboudumc/CWZ, Nijmegen, the Netherlands
| | - Seyedmojtaba Seyedmousavi
- Invasive Fungi Research Center, Mazandaran University of Medical Sciences, Sari, Iran; Middle East Center of Excellence for Infection Biology and Antimicrobial Pharmacology, Tehran, Iran; Molecular Microbiology Section, Laboratory of Clinical Infectious Diseases (LCID), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA
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Falahati M, Ghojoghi A, Abastabar M, Ghasemi Z, Farahyar S, Roudbary M, Hedayati MT, Armaki MT, Hoseinnejad A. The First Case of Total Dystrophic Onychomycosis Caused by Aspergillus clavatus Resistant to Antifungal Drugs. Mycopathologia 2015; 181:273-7. [PMID: 26474550 DOI: 10.1007/s11046-015-9954-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 10/04/2015] [Indexed: 10/22/2022]
Abstract
Onychomycosis is a common fungal infection of nails which is mainly caused by dermatophyte species and less often by yeasts and non-dermatophyte molds. We present a case of onychomycosis due to Aspergillus clavatus for the first time worldwide. The patient was an immunocompetent 32-year-old woman who identified with Psoriasis of the nail. The presence of A. clavatus in a nail sample was confirmed using microscopic and culture analysis followed by PCR of the β-tubulin gene. After antifungal susceptibility test, it is revealed that the isolate was resistant to the majority of common antifungal drugs, but finally the patient was treated with itraconazole 200 mg daily. A. clavatus and drug-resistant A. clavatus have not previously been reported from onychomycosis.
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Affiliation(s)
- Mehraban Falahati
- Department of Medical Mycology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Aynaz Ghojoghi
- Department of Medical Mycology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Abastabar
- Invasive Fungi Research Center (IFRC), Department of Medical Mycology and Parasitology, School of Medicine, Mazandaran University of Medical Sciences, P.O. Box 48175-1665, Sari, Iran.
| | - Zeinab Ghasemi
- Department of Medical Mycology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Shirin Farahyar
- Department of Medical Mycology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Roudbary
- Department of Medical Mycology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Taghi Hedayati
- Invasive Fungi Research Center (IFRC), Department of Medical Mycology and Parasitology, School of Medicine, Mazandaran University of Medical Sciences, P.O. Box 48175-1665, Sari, Iran
| | - Mojtaba Taghizadeh Armaki
- Invasive Fungi Research Center (IFRC), Department of Medical Mycology and Parasitology, School of Medicine, Mazandaran University of Medical Sciences, P.O. Box 48175-1665, Sari, Iran
| | - Akbar Hoseinnejad
- Invasive Fungi Research Center (IFRC), Department of Medical Mycology and Parasitology, School of Medicine, Mazandaran University of Medical Sciences, P.O. Box 48175-1665, Sari, Iran
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Nasri T, Hedayati MT, Abastabar M, Pasqualotto AC, Armaki MT, Hoseinnejad A, Nabili M. PCR-RFLP on β-tubulin gene for rapid identification of the most clinically important species of Aspergillus. J Microbiol Methods 2015; 117:144-7. [DOI: 10.1016/j.mimet.2015.08.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Revised: 08/03/2015] [Accepted: 08/06/2015] [Indexed: 10/23/2022]
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