Phylogenomic analysis of CTX-M-15–producing Enterobacter hormaechei belonging to the high-risk ST78 from animal infection: another successful One Health clone?. (June 2022)

• Record Type: Journal Article
• Authors: Cardoso, Brenda; Sellera, Fábio P.; Sano, Elder; Esposito, Fernanda; Seabra, Lourdes A.V.; Azedo, Milton R.; Pogliani, Fabio C.; Lincopan, Nilton
• Is Part Of: Journal of global antimicrobial resistance. Volume 29(2022)
• Page Start: 113
• Page End: 115
• Publication Date: 2022-06
• Subjects: Enterobacterales -- ESBL -- Dairy cattle -- Antimicrobial resistance -- Genomic surveillance -- Brazil; Drug resistance -- Periodicals; Drug resistance -- Periodicals; Drug resistance; Periodicals; 616.9041
• DOI: 10.1016/j.jgar.2022.02.010
• Languages: English
• ISSNs: 2213-7165

Abstract

Highlights: Extended-spectrum β-lactamase–positive Enterobacter cloacae complex members are critical priority pathogens. E. hormaechei belonging to sequence type (ST) ST78 is an emergent high-risk clone. Phylogenomic data of an E. hormaechei ST78/CTX-M-15 infecting a calf is presented. E. hormaechei carried a broad resistome and phylogenomic relatedness to human ST78. The success of E. hormaechei ST78 as a One Health clone is discussed. ABSTRACT: Objectives: Extended-spectrum β-lactamase (ESBL)–producing Enterobacter cloacae complex (ECC) members have been a leading cause of severe infections in hospital setting and have lately been recognized as important pathogens for animals. In this article, we report phylogenomic data of a multidrug-resistant and CTX-M-15–positive E. hormaechei belonging to ST78 isolated from a calf with omphalitis. Methods: Genomic DNA was extracted and sequenced using the Illumina NextSeq platform. De novo assembly was performed by Unicycler and in silico prediction accomplished by curated bioinformatics tools. Single nucleotide polymorphism (SNP)-based comparative phylogenomic analysis was conducted by using publicly available ECC genomes belonging to ST78. Results: The genome size was calculated at 3 8465 40 bp, comprising 4717 total genes, 3 rRNAs, 43 tRNAs, 7 ncRNAs, and 74 pseudogenes. The animal-associated E. hormaechei (ECBEZ strain) ST78 harboured the bla CTX-M-15 ESBL gene in addition to other critically important resistance genes conferring resistance to β-lactams, aminoglycosides, fosfomycin, phenicol, quinolones, sulphonamides, tetracyclines, and trimethoprim. Phylogenetic analysis revealed that ECBEZ is closely related to human-isolated strains from Asian and African countries. Conclusion: Phylogenomic analysis of CTX-M-15-producing E. hormaechei from animal infection reveals that ST78 is a successful One Health clone among ECC members. Furthermore, data presented in this study reinforce the urgent need to monitor ESBL-producing ECC members in veterinary settings.