Antimicrobial Resistance Profile of Staphylococcus hyicus Strains Isolated from Brazilian Swine Herds

Author(s)

Moreno, Andrea Micke ; Moreno, Luisa Zanolli ; Poor, Andre Pegoraro ; Matajira, Carlos Emilio Cabrera ; Moreno, Marina ; de Moura Gomes, Vasco Tulio ; Ribeiro da Silva, Givago Faria ; Takeuti, Karine Ludwig ; Barcellos, David Emilio

• Document type: Journal article
• Source: ANTIBIOTICS-BASEL; v. 11, n. 2, p. 12-pg., 2022-02-01.

Abstract

Staphylococcus hyicus is the causative agent of porcine exudative epidermitis. This disorder affects animals in all producing countries and presents a widespread occurrence in Brazil. This study evaluated strains from a historical collection in order to detect the presence of exfoliative-toxin-encoding genes (SHETB, ExhA, ExhB, ExhC, ExhD), characterize the strains using PFGE, and determine their respective antimicrobial resistance profiles. The results obtained from the evaluation of 77 strains from 1982 to 1987 and 103 strains from 2012 reveal a significant change in resistance profiles between the two periods, especially regarding the antimicrobial classes of fluoroquinolones, amphenicols, lincosamides, and pleuromutilins. The levels of multidrug resistance observed in 2012 were significantly higher than those detected in the 1980s. It was not possible to correlate the resistance profiles and presence of genes encoding toxins with the groups obtained via PFGE. Only 10.5% of the strains were negative for exfoliative toxins, and different combinations of toxins genes were identified. The changes observed in the resistance pattern of this bacterial species over the 30-year period analyzed indicate that S. hyicus could be a useful indicator in resistance monitoring programs in swine production. In a country with animal protein production such as Brazil, the results of this study reinforce the need to establish consistent monitoring programs of antimicrobial resistance in animals, as already implemented in various countries of the world. (AU)

• FAPESP's process: 11/08541-5 - Genotypic characterization of Staphylococcus hyicus strains from swine isolated in the last 30 years
• Grantee: Andrea Micke Moreno
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/17136-2 - Characterization of Leptospira strains isolated in Brazil by pulsed field gel electrophoresis (PFGE) typing and comparative genomic analysis.
• Grantee: Luisa Zanolli Moreno
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 15/26159-1 - Comparative genome analysis of Streptococcus suis strains isolated from swine in Brazil
• Grantee: Carlos Emilio Cabrera Matajira
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 13/16946-0 - Phenotypic and genotypic characterization of strains of Salmonella enterica isolated from pork in São Paulo.
• Grantee: Vasco Túlio de Moura Gomes
• Support Opportunities: Scholarships in Brazil - Doctorate