Hybrid Assembly from a Pathogenic Methicillin- and Multidrug-Resistant Staphylococcus pseudintermedius Strain

Joaquim Viñes1,2, Anna Cuscó2, Olga Francino1

  • 1Servei Veterinari de Genètica Molecular (SVGM), Universitat Autònoma de Barcelona, Bellaterra, Cerdanyola del Vallès, Barcelona, Spain joaquim.vines@vetgenomics.com olga.francino@uab.cat.

Insights

We sequenced the genome of a dog pathogen, Staphylococcus pseudintermedius, causing ear infections. This analysis identified specific genes and mutations linked to its antibiotic resistance.

Area of Science:

  • Veterinary Microbiology
  • Genomics
  • Antimicrobial Resistance

Background:

  • Staphylococcus pseudintermedius is a significant pathogen in canine infections, particularly otitis externa.
  • Understanding the genetic basis of antimicrobial resistance in S. pseudintermedius is crucial for effective treatment strategies.

Purpose of the Study:

  • To perform a hybrid genome assembly of a pathogenic Staphylococcus pseudintermedius strain from a canine otitis case.
  • To correlate the assembled genome with observed antimicrobial resistance profiles.

Main Methods:

  • Hybrid genome sequencing utilizing both Illumina and Nanopore technologies.
  • Bioinformatic analysis for genome assembly and gene identification.
  • Disk diffusion testing to determine antimicrobial susceptibility.

Main Results:

  • Successful hybrid genome assembly of the Staphylococcus pseudintermedius strain.
  • Identification of specific antimicrobial resistance genes and mutations within the genome.
  • Confirmation of the strain's resistance profile through genomic data.

Conclusions:

  • The genome assembly provides a valuable resource for studying Staphylococcus pseudintermedius pathogenesis and evolution.
  • Genomic insights can predict and explain observed antimicrobial resistance patterns in canine pathogens.
  • This study highlights the importance of integrating genomic data with phenotypic testing for comprehensive antimicrobial resistance surveillance.

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