Molecular Epidemiological Characteristics of Staphylococcus pseudintermedius, Staphylococcus coagulans, and Coagulase-Negative Staphylococci Cultured from Clinical Canine Skin and Ear Samples in Queensland

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Publicado en:Antibiotics vol. 14, no. 1 (2025), p. 80
Autor principal: Horsman, Sara
Otros Autores: Zaugg, Julian, Meler, Erika, Mikkelsen, Deirdre, Soares Magalhães, Ricardo J, Gibson, Justine S
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MDPI AG
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003 UK-CbPIL
022 |a 2079-6382 
024 7 |a 10.3390/antibiotics14010080  |2 doi 
035 |a 3159182292 
045 2 |b d20250101  |b d20251231 
084 |a 231335  |2 nlm 
100 1 |a Horsman, Sara  |u School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia; <email>e.meler@uq.edu.au</email> (E.M.); <email>gibson.j@uq.edu.au</email> (J.S.G.) 
245 1 |a Molecular Epidemiological Characteristics of <i>Staphylococcus pseudintermedius</i>, <i>Staphylococcus coagulans,</i> and Coagulase-Negative Staphylococci Cultured from Clinical Canine Skin and Ear Samples in Queensland 
260 |b MDPI AG  |c 2025 
513 |a Journal Article 
520 3 |a Background/Objectives: Infections in dogs caused by methicillin-resistant staphylococci (MRS) present limited treatment options. This study’s objective was to investigate the molecular epidemiology of Staphylococcus spp. cultured exclusively from clinical canine skin and ear samples in Queensland, Australia, using whole-genome sequencing (WGS). Methods: Forty-two Staphylococcus spp. isolated from clinical canine skin and ear samples, from an unknown number of dogs, were sourced from two veterinary diagnostic laboratories between January 2022 and May 2023. These isolates underwent matrix-assisted laser desorption ionisation– time of flight bacterial identification, minimum inhibitory concentration testing using SensititreTM plates and WGS. Phylogenetic trees and core genome multilocus sequence typing (cgMLST) minimum spanning trees (MSTs) were constructed. Results: The isolates included methicillin-resistant and -sensitive S. pseudintermedius (MRSP: 57.1%, 24/42; and MSSP: 19.1%, 8/42), methicillin-resistant and -sensitive S. coagulans (MRSC: 14.3%, 6/42; and MSSC: 2.4%, 1/42) and methicillin-resistant coagulase-negative staphylococci (MR-CoNS: 7.1%, 3/42). Thirty-nine isolates were included after WGS, where all MRS harboured the mecA gene. Eighteen sequence types (STs) were identified, including three novel MRSP and six novel MSSP STs. MRSP ST496-V-VII (23%; 9/39) and MRSP ST749-IV-(IVg) (12.8%; 5/39) were commonly isolated. Phylogenetic analysis of single nucleotide polymorphisms showed that MRSP, MRSC and MSSC were similar to globally isolated staphylococci from canine skin and ear infections. Using cgMLST MSTs, MRSP isolates were not closely related to global strains. Conclusions: Our findings revealed a genotypically diverse geographical distribution and phylogenetic relatedness of staphylococci cultured from clinical canine skin and ear samples across Queensland. This highlights the importance of ongoing surveillance to aid in evidence-based treatment decisions and antimicrobial stewardship. 
651 4 |a Australia 
651 4 |a Queensland Australia 
651 4 |a United States--US 
653 |a Skin 
653 |a Infections 
653 |a Population 
653 |a Geographical distribution 
653 |a Phylogenetics 
653 |a Epidemiology 
653 |a Drug resistance 
653 |a Laboratories 
653 |a Methicillin 
653 |a Nucleotide sequence 
653 |a Penicillin 
653 |a Genes 
653 |a Phylogeny 
653 |a Virulence 
653 |a Dogs 
653 |a Plasmids 
653 |a Ear 
653 |a Veterinary services 
653 |a Nucleotides 
653 |a MecA protein 
653 |a Skin resistance 
653 |a Gene sequencing 
653 |a Graph theory 
653 |a Minimum inhibitory concentration 
653 |a Coagulase 
653 |a Antimicrobial agents 
653 |a Single-nucleotide polymorphism 
653 |a Whole genome sequencing 
653 |a Multilocus sequence typing 
653 |a Microbiota 
653 |a Evidence-based practice 
653 |a Staphylococcus 
700 1 |a Zaugg, Julian  |u Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia; &lt;email&gt;j.zaugg@uq.edu.au&lt;/email&gt; 
700 1 |a Meler, Erika  |u School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia; &lt;email&gt;e.meler@uq.edu.au&lt;/email&gt; (E.M.); &lt;email&gt;gibson.j@uq.edu.au&lt;/email&gt; (J.S.G.) 
700 1 |a Mikkelsen, Deirdre  |u School of Agriculture and Food Sustainability, The University of Queensland, Brisbane, QLD 4072, Australia; &lt;email&gt;d.mikkelsen@uq.edu.au&lt;/email&gt; 
700 1 |a Soares Magalhães, Ricardo J  |u School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia; &lt;email&gt;e.meler@uq.edu.au&lt;/email&gt; (E.M.); &lt;email&gt;gibson.j@uq.edu.au&lt;/email&gt; (J.S.G.) 
700 1 |a Gibson, Justine S  |u School of Veterinary Science, The University of Queensland, Gatton, QLD 4343, Australia; &lt;email&gt;e.meler@uq.edu.au&lt;/email&gt; (E.M.); &lt;email&gt;gibson.j@uq.edu.au&lt;/email&gt; (J.S.G.) 
773 0 |t Antibiotics  |g vol. 14, no. 1 (2025), p. 80 
786 0 |d ProQuest  |t Biological Science Database 
856 4 1 |3 Citation/Abstract  |u https://www.proquest.com/docview/3159182292/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
856 4 0 |3 Full Text + Graphics  |u https://www.proquest.com/docview/3159182292/fulltextwithgraphics/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
856 4 0 |3 Full Text - PDF  |u https://www.proquest.com/docview/3159182292/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch