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Salah H, Al-Hatmi AMS, Theelen B, Abukamar M, Hashim S, van Diepeningen AD, Lass-Florl C, Boekhout T, Almaslamani M, Taj-Aldeen SJ. Phylogenetic diversity of human pathogenic Fusarium and emergence of uncommon virulent species. J Infect 2015; 71:658-66. [PMID: 26348828 DOI: 10.1016/j.jinf.2015.08.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [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: 06/09/2015] [Revised: 08/24/2015] [Accepted: 08/27/2015] [Indexed: 12/31/2022]
Abstract
OBJECTIVES Fusarium species cause a broad spectrum of infections. However, little is known about the etiological agents to the species level. We identified Fusarium species isolated from clinical specimens including those of high risk patients to better understand the species involved in the pathogenesis. METHODS A set of 44 Fusarium isolates were identified by two-locus sequence typing using partial sequences of the second largest subunit of RNA polymerase (RPB2) and translation elongation factor 1 alpha (TEF-1α). RESULTS The identified species belonged to four species complexes (SC); the most common SC was Fusarium solani (FSSC) (75%), followed by Fusarium oxysporum (FOSC) (4.5%), Fusarium fujikuroi (FFSC) (13.6%), and Fusarium dimerum (FDSC) (6.8%). Sites of infections were nails (n = 19, 43.2%), skin (n = 7, 15.9%), cornea (n = 6, 13.6%), blood (n = 3, 9%), wound (n = 4, 6.8%), burn (n = 2, 4.5%), tissue (n = 2, 4.5%), and urine (n = 1, 2.27%). Fusarium acutatum was rare and seem restricted to the Middle East. Comorbidities associated with invasive infections were hematological malignancy and autoimmune disorders. CONCLUSIONS Members of the FSSC predominantly caused cornea, nail and bloodstream infections. Less frequently encountered were the FOSC, FFSC and FDSC. More accurate molecular identification of Fusarium species is important to predict therapeutic outcome and the emergence of these species.
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Affiliation(s)
- Husam Salah
- Mycology Unit, Microbiology Division, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, P. O. Box 3050, Doha, Qatar; CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands
| | - Abdullah M S Al-Hatmi
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands; Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands; Directorate General of Health Services, Ministry of Health, Ibri Hospital, Ibri, Oman
| | - Bart Theelen
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands
| | - Mohammed Abukamar
- Department of Medicine, Infectious Disease Division, Hamad Medical Corporation, P. O. Box 3050, Doha, Qatar
| | - Samar Hashim
- Department of Medicine, Infectious Disease Division, Hamad Medical Corporation, P. O. Box 3050, Doha, Qatar
| | | | - Cornelia Lass-Florl
- Division of Hygiene and Medical Microbiology, Innsbruck Medical University, Innsbruck, Austria
| | - Teun Boekhout
- CBS-KNAW Fungal Biodiversity Centre, Utrecht, The Netherlands; Department of Dermatology, Shanghai Key Laboratory of Molecular Medical Mycology, Institute of Dermatology and Medical Mycology, Changzheng Hospital, Second Military Medical University, Shanghai, People's Republic of China; Institute of Microbiology, Chinese Academy of Science, Beijing, People's Republic of China
| | - Muna Almaslamani
- Department of Medicine, Infectious Disease Division, Hamad Medical Corporation, P. O. Box 3050, Doha, Qatar
| | - Saad J Taj-Aldeen
- Mycology Unit, Microbiology Division, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, P. O. Box 3050, Doha, Qatar.
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