Biofilm Formation of <i>Staphylococcus aureus</i> from Pets, Livestock, and Wild Animals: Relationship with Clonal Lineages and Antimicrobial Resistance

This study aimed to compare the biofilm formation ability of <i>Staphylococcus aureus</i> isolated from a wide range of animals and study the association between biofilm formation and antimicrobial resistance and genetic lineages. A total of 214 <i>S. aureus</i> strains isola...

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Main Authors: Vanessa Silva, Elisete Correia, José Eduardo Pereira, Camino González-Machado, Rosa Capita, Carlos Alonso-Calleja, Gilberto Igrejas, Patrícia Poeta
Format: Article
Language:English
Published: MDPI AG 2022-06-01
Series:Antibiotics
Subjects:
Online Access:https://www.mdpi.com/2079-6382/11/6/772
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author Vanessa Silva
Elisete Correia
José Eduardo Pereira
Camino González-Machado
Rosa Capita
Carlos Alonso-Calleja
Gilberto Igrejas
Patrícia Poeta
author_facet Vanessa Silva
Elisete Correia
José Eduardo Pereira
Camino González-Machado
Rosa Capita
Carlos Alonso-Calleja
Gilberto Igrejas
Patrícia Poeta
author_sort Vanessa Silva
collection DOAJ
description This study aimed to compare the biofilm formation ability of <i>Staphylococcus aureus</i> isolated from a wide range of animals and study the association between biofilm formation and antimicrobial resistance and genetic lineages. A total of 214 <i>S. aureus</i> strains isolated from pets, livestock, and wild animals were evaluated regarding their ability to form biofilms by the microtiter biofilm assay and their structure via confocal scanning laser microscopy. Statistical analysis was used to find an association between biofilm formation and antimicrobial resistance, multidrug resistance, sequence types (STs), <i>spa</i> and <i>agr</i>-types of the isolates. The antimicrobial susceptibility of 24 h-old biofilms was assessed against minimum inhibitory concentrations (MIC) and 10× MIC of amikacin and tetracycline, and the biomass reduction was measured. The metabolic activity of biofilms after antimicrobial treatment was evaluated by the XTT assay. All isolates were had the ability to form biofilms. Yet, significant differences in biofilm biomass production were detected among animal species. Multidrug resistance had a positive association with biofilm formation as well as methicillin-resistance. Significant differences were also detected among the clonal lineages of the isolates. Both tetracycline and amikacin were able to significantly reduce the biofilm mass. However, none of the antimicrobials were able to eradicate the biofilm at the maximum concentration used. Our results provide important information on the biofilm-forming capacity of animal-adapted <i>S. aureus</i> isolates, which may have potential implications for the development of new biofilm-targeted therapeutics.
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spelling doaj.art-ea0900a0d5b443a48ecd11f76d688ca72023-11-23T15:17:01ZengMDPI AGAntibiotics2079-63822022-06-0111677210.3390/antibiotics11060772Biofilm Formation of <i>Staphylococcus aureus</i> from Pets, Livestock, and Wild Animals: Relationship with Clonal Lineages and Antimicrobial ResistanceVanessa Silva0Elisete Correia1José Eduardo Pereira2Camino González-Machado3Rosa Capita4Carlos Alonso-Calleja5Gilberto Igrejas6Patrícia Poeta7Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, PortugalCenter for Computational and Stochastic Mathematics (CEMAT), Department of Mathematics, University of Trás-os-Montes and Alto Douro (UTAD), 5001-801 Vila Real, PortugalCECAV—Veterinary and Animal Research Centre, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, PortugalDepartment of Food Hygiene and Technology, Veterinary Faculty, University of León, E-24071 León, SpainDepartment of Food Hygiene and Technology, Veterinary Faculty, University of León, E-24071 León, SpainDepartment of Food Hygiene and Technology, Veterinary Faculty, University of León, E-24071 León, SpainDepartment of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, PortugalMicrobiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, PortugalThis study aimed to compare the biofilm formation ability of <i>Staphylococcus aureus</i> isolated from a wide range of animals and study the association between biofilm formation and antimicrobial resistance and genetic lineages. A total of 214 <i>S. aureus</i> strains isolated from pets, livestock, and wild animals were evaluated regarding their ability to form biofilms by the microtiter biofilm assay and their structure via confocal scanning laser microscopy. Statistical analysis was used to find an association between biofilm formation and antimicrobial resistance, multidrug resistance, sequence types (STs), <i>spa</i> and <i>agr</i>-types of the isolates. The antimicrobial susceptibility of 24 h-old biofilms was assessed against minimum inhibitory concentrations (MIC) and 10× MIC of amikacin and tetracycline, and the biomass reduction was measured. The metabolic activity of biofilms after antimicrobial treatment was evaluated by the XTT assay. All isolates were had the ability to form biofilms. Yet, significant differences in biofilm biomass production were detected among animal species. Multidrug resistance had a positive association with biofilm formation as well as methicillin-resistance. Significant differences were also detected among the clonal lineages of the isolates. Both tetracycline and amikacin were able to significantly reduce the biofilm mass. However, none of the antimicrobials were able to eradicate the biofilm at the maximum concentration used. Our results provide important information on the biofilm-forming capacity of animal-adapted <i>S. aureus</i> isolates, which may have potential implications for the development of new biofilm-targeted therapeutics.https://www.mdpi.com/2079-6382/11/6/772<i>S. aureus</i>MRSAanimalsbiofilmsantimicrobial resistancegenetic linages
spellingShingle Vanessa Silva
Elisete Correia
José Eduardo Pereira
Camino González-Machado
Rosa Capita
Carlos Alonso-Calleja
Gilberto Igrejas
Patrícia Poeta
Biofilm Formation of <i>Staphylococcus aureus</i> from Pets, Livestock, and Wild Animals: Relationship with Clonal Lineages and Antimicrobial Resistance
Antibiotics
<i>S. aureus</i>
MRSA
animals
biofilms
antimicrobial resistance
genetic linages
title Biofilm Formation of <i>Staphylococcus aureus</i> from Pets, Livestock, and Wild Animals: Relationship with Clonal Lineages and Antimicrobial Resistance
title_full Biofilm Formation of <i>Staphylococcus aureus</i> from Pets, Livestock, and Wild Animals: Relationship with Clonal Lineages and Antimicrobial Resistance
title_fullStr Biofilm Formation of <i>Staphylococcus aureus</i> from Pets, Livestock, and Wild Animals: Relationship with Clonal Lineages and Antimicrobial Resistance
title_full_unstemmed Biofilm Formation of <i>Staphylococcus aureus</i> from Pets, Livestock, and Wild Animals: Relationship with Clonal Lineages and Antimicrobial Resistance
title_short Biofilm Formation of <i>Staphylococcus aureus</i> from Pets, Livestock, and Wild Animals: Relationship with Clonal Lineages and Antimicrobial Resistance
title_sort biofilm formation of i staphylococcus aureus i from pets livestock and wild animals relationship with clonal lineages and antimicrobial resistance
topic <i>S. aureus</i>
MRSA
animals
biofilms
antimicrobial resistance
genetic linages
url https://www.mdpi.com/2079-6382/11/6/772
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