Comparison of Oral Microbial Composition and Determinants Encoding Antimicrobial Resistance in Dogs and Their Owners

• Published in: Antibiotics (Basel) Vol. 12; no. 10; p. 1554
• Main Authors: Šakarnytė, Laura, Šiugždinienė, Rita, Žymantienė, Judita, Ruzauskas, Modestas
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.10.2023; MDPI
• Subjects: Aminoglycosides; Ammonium; Ammonium compounds; Analysis; Animal human relations; Animals; Antimicrobial agents; Antimicrobial resistance; Bacteria; Bacterial infections; Composition; Disease transmission; Dogs; Drug resistance; Drug resistance in microorganisms; Environmental health; Genes; Gum disease; Infections; Lincosamides; Metagenomics; microbiome; Microbiomes; Microbiota; Microbiota (Symbiotic organisms); Microorganisms; Pathogens; Periodontal disease; Periodontal diseases; Pets; Phylogenetics; Quaternary ammonium compounds; Quaternary ammonium salts; resistome; Sulfonamides; Tetracycline; Tetracyclines; Virulence; Zoonoses; β Lactamase; California; pets; resistome; zoonoses; bacteria; antimicrobial resistance; microbiome
• ISSN: 2079-6382; 2079-6382
• DOI: 10.3390/antibiotics12101554

Consolidated studies on animal, human, and environmental health have become very important for understanding emerging zoonotic diseases and the spread of antimicrobial resistance (AMR). The aim of this study was to analyse the oral microbiomes of healthy dogs and their owners, including determinants of AMR. Shotgun metagenomic sequencing detected 299 bacterial species in pets and their owners, from which 70 species were carried by dogs and 229 species by humans. Results demonstrated a unique microbial composition of dogs and their owners. At an order level, Bacteroidales were the most prevalent oral microbiota of dogs with significantly lower prevalence in their owners where Actinomycetales and Lactobacillales predominated. and were the most prevalent genera in dogs, whereas and were in animal owners. The resistances to macrolides, tetracyclines, lincosamides and Cfx family A class broad-spectrum β-lactamase were detected in both animal and human microbiomes. Resistance determinants to amphenicols, aminoglycosides, sulphonamides, and quaternary ammonium compounds were detected exceptionally in dogs. In conclusion, the study demonstrated different bacterial composition in oral microbiomes of healthy dogs without clinical signs of periodontal disease and their owners. Due to the low numbers of the samples tested, further investigations with an increased number of samples should be performed.