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Talbot JJ, Johnson LR, Martin P, Beatty JA, Sutton DA, Billen F, Halliday CL, Gibson JS, Kidd S, Steiner JM, Ujvari B, Barrs VR. What causes canine sino-nasal aspergillosis? A molecular approach to species identification. Vet J 2014; 200:17-21. [PMID: 24559745 DOI: 10.1016/j.tvjl.2014.01.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Revised: 01/07/2014] [Accepted: 01/13/2014] [Indexed: 11/29/2022]
Abstract
On the basis of phenotypic identification methods, Aspergillus fumigatus is reported as the most commonly identified aetiological agent of canine sino-nasal aspergillosis (SNA). However, definitive identification of Aspergillus spp. using phenotypic features alone is unreliable. The aim of this study was to determine the molecular identities of fungal species causing SNA in dogs. Genomic DNA was extracted from 91 fungal isolates from 90 dogs diagnosed with SNA in Australia, the USA and Belgium, and the ITS1-5.8S-ITS2 ribosomal DNA and partial β-tubulin regions were sequenced. Eighty-eight of 91 (96.7%) isolates were identified as A. fumigatus and 3/91 (3.3%) belonged to Aspergillus section Nigri spp. (Aspergillus tubingensis: 2/91; Aspergillus uvarum: 1/91). These findings confirm that A. fumigatus is the most common aetiological agent of canine SNA. This is the first report to document a pathogenic role for A. tubingensis and A. uvarum in dogs.
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Affiliation(s)
- Jessica J Talbot
- Valentine Charlton Cat Centre, Faculty of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia
| | - Lynelle R Johnson
- Department of Medicine and Epidemiology, University of California, Davis, CA, USA
| | - Patricia Martin
- Veterinary Pathology Diagnostic Services, Faculty of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia
| | - Julia A Beatty
- Valentine Charlton Cat Centre, Faculty of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia
| | - Deanna A Sutton
- Department of Pathology, University of Texas Health Science Center at San Antonio School of Medicine, San Antonio, TX, USA
| | - Frédéric Billen
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
| | - Catriona L Halliday
- Centre for Infectious Diseases and Microbiology, Westmead Hospital, Westmead, New South Wales, Australia
| | - Justine S Gibson
- School of Veterinary Science, The University of Queensland, Gatton, Queensland, Australia
| | - Sarah Kidd
- Mycology Unit, SA Pathology, Women's and Children's Hospital, North Adelaide, South Australia, Australia
| | - Jörg M Steiner
- Department of Small Animal Clinical Sciences, Texas A&M University, College Station, TX, USA
| | - Beata Ujvari
- Valentine Charlton Cat Centre, Faculty of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia
| | - Vanessa R Barrs
- Valentine Charlton Cat Centre, Faculty of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia.
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