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Biénès T, Vangrinsven E, Fastrès A, Garigliany MM, Billen F, Clercx C. Utility of fungal polymerase chain reaction on nasal swab samples in the diagnosis and monitoring of sinonasal aspergillosis in dogs. J Vet Intern Med 2022; 36:1295-1302. [PMID: 35712784 PMCID: PMC9308428 DOI: 10.1111/jvim.16441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 04/28/2022] [Indexed: 11/27/2022] Open
Abstract
Background In dogs with sinonasal aspergillosis (SNA) the utility of PCR in the diagnosis and monitoring of the disease after treatment has not been assessed. Objectives To evaluate the presence of fungal DNA using quantitative PCR targeting Aspergillus fumigatus (Aspfum) and Aspergillus spp. (PanAsp), and PCR targeting multiple fungal species (PanFun), in samples obtained from nasal cavities of dogs with SNA, other nasal diseases and healthy dogs. Animals Sixty‐two dogs including 20 with SNA, 12 with cured SNA (of which 10 are from the SNA group), 20 dogs with Non‐SNA nasal disease, and 20 healthy dogs. Methods Prospective cross‐sectional study. Aspfum, PanAsp, and PanFun were performed on blindly collected nasal swabs obtained in anesthetized dogs. Results In SNA dogs, Aspfum and PanAsp were positive in 13/20 and 14/20 dogs. In all dogs in the 3 other groups, A. fumigatus DNA was not detected using Aspfum. PanAsp was positive in 3 non‐SNA dogs: 1 with cured SNA and 2 with Non‐SNA nasal disease. A Ct cut‐off value of 33.3 for Aspfum demonstrated 65% sensitivity and 100% specificity. A Ct cut‐off value of 34.5 for PanAsp demonstrated 70% sensitivity and 96.2% specificity. PanFun was positive in 16/20, 12/12, 19/20, and 7/20 dogs in the SNA, cured SNA, Non‐SNA, and healthy groups, respectively. Conclusion and Clinical Importance Aspfum and PanAsp on blindly collected nasal swabs can be useful for the detection of SNA at diagnosis and at cure, especially when more invasive methods are not available.
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Affiliation(s)
- Tom Biénès
- Department of Clinical Sciences, Faculty of Veterinary Medicine, FARAH, University of Liège, Liège, Belgium
| | - Emilie Vangrinsven
- Department of Clinical Sciences, Faculty of Veterinary Medicine, FARAH, University of Liège, Liège, Belgium
| | - Aline Fastrès
- Department of Clinical Sciences, Faculty of Veterinary Medicine, FARAH, University of Liège, Liège, Belgium
| | - Mutien-Marie Garigliany
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, FARAH, University of Liège, Liège, Belgium
| | - Frédéric Billen
- Department of Clinical Sciences, Faculty of Veterinary Medicine, FARAH, University of Liège, Liège, Belgium
| | - Cécile Clercx
- Department of Clinical Sciences, Faculty of Veterinary Medicine, FARAH, University of Liège, Liège, Belgium
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Barrs VR, Talbot JJ. Fungal Rhinosinusitis and Disseminated Invasive Aspergillosis in Cats. Vet Clin North Am Small Anim Pract 2019; 50:331-357. [PMID: 31866094 DOI: 10.1016/j.cvsm.2019.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Fungal rhinosinusitis, including sinonasal aspergillosis (SNA) and sino-orbital aspergillosis (SOA), is the most common type of aspergillosis encountered in cats. Other focal forms of aspergillosis including disseminated invasive aspergillosis occur less frequently. SOA is an invasive mycosis that is increasingly recognized and is most commonly caused by Aspergillus felis, a close relative of Aspergillus fumigatus. SNA can be invasive or noninvasive and is most commonly caused by A fumigatus and Aspergillus niger. Molecular methods are required to correctly identify the fungi that cause SNA and SOA. SNA has a favorable prognosis with treatment, whereas the prognosis for SOA remains poor.
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Affiliation(s)
- Vanessa R Barrs
- City University of Hong Kong, Department of Infectious Diseases & Public Health, Jockey Club College of Veterinary Medicine, Kowloon, Hong Kong SAR, China.
| | - Jessica J Talbot
- Faculty of Veterinary Science, University Veterinary Teaching Hospital, Sydney, University of Sydney, Faculty of Science, Sydney School of Veterinary Science, Camperdown, New South Wales 2006, Australia
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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: 1.7] [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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Trempala CL, Herold LV. Spontaneous pneumothorax associated withAspergillusbronchopneumonia in a dog. J Vet Emerg Crit Care (San Antonio) 2013; 23:624-30. [DOI: 10.1111/vec.12118] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 01/01/2013] [Indexed: 11/30/2022]
Affiliation(s)
| | - Lee V. Herold
- DoveLewis Emergency Animal Hospital; Portland OR 97209
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Mercier E, Peters IR, Billen F, Battaille G, Clercx C, Day MJ, Peeters D. Potential role of Alternaria and Cladosporium species in canine lymphoplasmacytic rhinitis. J Small Anim Pract 2013; 54:179-83. [PMID: 23496099 DOI: 10.1111/jsap.12049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To evaluate the possible role of Alternaria and Cladosporium species in the pathogenesis of canine lymphoplasmacytic rhinitis by comparing the amount of specific fungal DNA in nasal mucosal biopsies between dogs without nasal neoplasia and those with lymphoplasmacytic rhinitis or nasal neoplasia. METHODS Quantitative real-time polymerase chain reaction (qPCR) assays detecting DNA from Alternaria and Cladosporium fungi were applied to nasal mucosal biopsies collected from dogs with lymphoplasmacytic rhinitis (n = 8), dogs with nasal neoplasia (n = 10) and control animals (n = 10). A copy number for each sample was calculated using a standard curve of known copy number and differences amongst groups were assessed using Kruskal-Wallis tests. RESULTS No significant difference was found between the groups. Low levels of Alternaria DNA (10-100 copies/PCR) were detected in one sample; very low levels of DNA (<10 copies/qPCR) were detected in 6 samples, and 21 samples were negative. Low levels of Cladosporium DNA were detected in 2 samples; very low levels of DNA in 18; and 8 were negative. CLINICAL SIGNIFICANCE Results of this study reveal that Alternaria and Cladosporium species are part of the canine nasal flora, and that these fungi are probably not involved in the pathogenesis of lymphoplasmacytic rhinitis.
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Affiliation(s)
- E Mercier
- Department of Veterinary Clinical Sciences, Division of Companion Animal Internal Medicine, Faculty of Veterinary Medicine, University of Liège, Sart Tilman, 4000, Liège, Belgium
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Abstract
Sinonasal aspergillosis is an uncommon, yet debilitating and often frustrating condition to treat in dogs despite years of research evaluating pathogenesis, diagnosis and treatment. The disease is most commonly caused by non-invasive fungal infection, thought to be secondary to altered innate and/or adaptive immune responses. Attempts to confirm this have however failed. A variety of conflicting opinions regarding the diagnosis and treatment of sinonasal aspergillosis exist. Often the use of a particular treatment protocol is based upon personal or regional preference. Evaluation of the veterinary literature demonstrates that the evidence base in support of individual treatment recommendations is weak. A number of recent publications have helped to expand the current knowledge base and therefore our understanding of important practicalities for both diagnostic options and treatment protocols. The following review examines the current evidence for the pathogenesis of sinonasal aspergillosis in dogs, as well as the various diagnostic options. The available evidence for frequently utilised -therapeutic options and their likely outcomes is also explored.
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Affiliation(s)
- M J Sharman
- Veterinary Science, University of Melbourne, 250 Princes Highway, Werribee, Victoria, 3030, Australia
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Adamama-Moraitou KK, Pardali D, Day MJ, Denning DW, Papazoglou L, Papastefanou A, Rallis TS. Aspergillus fumigatus Bronchopneumonia in a Hellenic Shepherd Dog. J Am Anim Hosp Assoc 2011; 47:e13-8. [DOI: 10.5326/jaaha-ms-5497] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A 3 yr old intact female Hellenic shepherd dog was referred due to depression, partial anorexia, fever, and a mild productive cough of 2 mo duration. Thoracic radiographs showed increased opacity of all of the left lung lobes. Upon bronchoscopy, a sanguineous, purulent discharge was detected in the tracheal lumen with hyperplastic tissue narrowing the left main stem bronchus. Cultures were positive for bacteria (Bacillus spp. and Clostridium spp.) but negative for fungi. Due to the severity of the lesions, a complete left lung pneumonectomy was performed. Histopathological examination of the excised lung tissues revealed a severe granulomatous bronchopneumonia with numerous alveolar macrophages laden with structures stained positively by periodic acid-Schiff and Grocott stain that had morphology consistent with fungi. PCR and sequencing of internal transcribed spacer regions 1 and 2 from genetic material extracted from paraffin-embedded pulmonary tissue confirmed the presence of Aspergillus fumigatus. Itraconazole was administrated for 5.5 mo and the dog was clinically normal 26 mo after surgery.
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Affiliation(s)
- Katerina K. Adamama-Moraitou
- Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, University of Thessaloniki, Thessaloniki, Greece (K.A., D.P., L.P., A.P., T.R.); School of Clinical Veterinary Science, University of Bristol, Bristol, UK (M.D.); and School of Translational Medicine, University of Manchester, Manchester, UK (D.D.)
| | - Dimitra Pardali
- Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, University of Thessaloniki, Thessaloniki, Greece (K.A., D.P., L.P., A.P., T.R.); School of Clinical Veterinary Science, University of Bristol, Bristol, UK (M.D.); and School of Translational Medicine, University of Manchester, Manchester, UK (D.D.)
| | - Michael J. Day
- Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, University of Thessaloniki, Thessaloniki, Greece (K.A., D.P., L.P., A.P., T.R.); School of Clinical Veterinary Science, University of Bristol, Bristol, UK (M.D.); and School of Translational Medicine, University of Manchester, Manchester, UK (D.D.)
| | - David W. Denning
- Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, University of Thessaloniki, Thessaloniki, Greece (K.A., D.P., L.P., A.P., T.R.); School of Clinical Veterinary Science, University of Bristol, Bristol, UK (M.D.); and School of Translational Medicine, University of Manchester, Manchester, UK (D.D.)
| | - Lysimachos Papazoglou
- Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, University of Thessaloniki, Thessaloniki, Greece (K.A., D.P., L.P., A.P., T.R.); School of Clinical Veterinary Science, University of Bristol, Bristol, UK (M.D.); and School of Translational Medicine, University of Manchester, Manchester, UK (D.D.)
| | - Anastasia Papastefanou
- Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, University of Thessaloniki, Thessaloniki, Greece (K.A., D.P., L.P., A.P., T.R.); School of Clinical Veterinary Science, University of Bristol, Bristol, UK (M.D.); and School of Translational Medicine, University of Manchester, Manchester, UK (D.D.)
| | - Timoleon S. Rallis
- Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, University of Thessaloniki, Thessaloniki, Greece (K.A., D.P., L.P., A.P., T.R.); School of Clinical Veterinary Science, University of Bristol, Bristol, UK (M.D.); and School of Translational Medicine, University of Manchester, Manchester, UK (D.D.)
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Billen F, Clercx C, Le Garérrès A, Massart L, Mignon B, Peeters D. Effect of sampling method and incubation temperature on fungal culture in canine sinonasal aspergillosis. J Small Anim Pract 2008; 50:67-72. [PMID: 19037883 DOI: 10.1111/j.1748-5827.2008.00672.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To evaluate the most appropriate sampling procedure and the effect of incubation temperature on fungal culture in the diagnosis of canine sinonasal aspergillosis (SNA). METHODS Sixteen dogs with SNA and 20 dogs with non-fungal nasal disease entered a prospective study. Nasal secretions and mucosal biopsies were collected in all dogs. Fungal plaques were also sampled in dogs with SNA. Each specimen was taken in duplicate from each dog and incubated at room temperature and 37 degrees C. RESULTS In dogs with SNA, nasal secretions, mucosal biopsies and fungal plaques yielded fungal growth at room temperature in one, one and seven dogs, respectively, whereas fungal growth was obtained at 37 degrees C in three, 12 and 14 dogs, respectively. No specimen collected from any dog with non-fungal nasal disease yielded fungal growth at room temperature or at 37 degrees C. CLINICAL SIGNIFICANCE The diagnosis of canine SNA is more likely to be confirmed following culture of mucosal biopsies or fungal plaques than nasal secretions sampled blindly with swabs. Incubating cultures at 37 degrees C is more likely to provide a diagnostic outcome than when samples are cultured at room temperature. Fungal culture of nasal specimens has good specificity for the diagnosis of SNA in dogs.
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Affiliation(s)
- F Billen
- Department of Clinical Sciences, University of Liège, Boulevard de Colonster, Liège, Belgium
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Billen F, Peeters D, Peters IR, Helps CR, Huynen P, De Mol P, Massart L, Day MJ, Clercx C. Comparison of the value of measurement of serum galactomannan and Aspergillus-specific antibodies in the diagnosis of canine sino-nasal aspergillosis. Vet Microbiol 2008; 133:358-65. [PMID: 18768268 DOI: 10.1016/j.vetmic.2008.07.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2008] [Revised: 07/18/2008] [Accepted: 07/24/2008] [Indexed: 11/18/2022]
Abstract
Serology is currently used for the diagnosis of canine sino-nasal aspergillosis (SNA). However, the accuracy of serological testing using commercially available, standardized purified antigen preparations of Aspergillus (CAPurAspAg) has only been poorly documented. The aim of the present study was to assess the diagnostic value of an agar-gel double immunodiffusion (AGDD) test and an anti-Aspergillus IgG ELISA, using CAPurAspAg and the commercially available Platelia test for the detection of serum galactomannan. Sera from 17 dogs with SNA, 18 dogs with a nasal tumour (NT), 11 dogs with lymphoplasmacytic rhinitis (LPR) and 33 control dogs were tested with the 3 methods. AGDD result was positive in 76.5% of dogs with SNA, whereas all sera from dogs with non-fungal nasal disease and control dogs were negative. A positive IgG ELISA result was obtained in 88% of dogs with SNA and in 18% of dogs with LPR. All patients with NT and control dogs had a negative IgG ELISA result. The Platelia test was positive in 24% of dogs with SNA, 11% of dogs with NT, 9% of dogs with LPR and 24% of control dogs. The results of this study suggest that (1) the detection of serum Aspergillus-specific antibodies with AGDD or ELISA, using CAPurAspAg, provides excellent specificity and good sensitivity, (2) the specificity is higher for AGDD (100%) than for ELISA (96.8%) while sensitivity is higher for ELISA (88.2%) than for AGDD (76.5%) and (3) serum galactomannan quantification with the Plateliat test is unreliable for the diagnosis of canine SNA.
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Affiliation(s)
- F Billen
- Department of Veterinary Clinical Sciences, University of Liège, Boulevard de Colonster 20(B44), 4000 Liège, Belgium.
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