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Association of multilocus sequencing types and antimicrobial resistance profiles of methicillin-resistant Mammaliicoccus sciuri in animals in Southern Thailand

Veterinary World, ISSN: 2231-0916, Vol: 16, Issue: 2, Page: 291-295
2023
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Research Results from Walailak University Update Knowledge of Veterinary Research (Association of multilocus sequencing types and antimicrobial resistance profiles of methicillin-resistant Mammaliicoccus sciuri in animals in Southern Thailand)

2023 FEB 27 (NewsRx) -- By a News Reporter-Staff News Editor at NewsRx Life Science Daily -- Data detailed on veterinary research have been presented.

Article Description

Background and Aim: Mammaliicoccus sciuri, formerly known as Staphylococcus sciuri, is an opportunistic pathogen in the environment, human and animal mucosa, and skin. Although this pathogen is becoming more resistant to drugs and harmful to animals and humans, basic knowledge of this pathogen remains limited. This study aimed to investigate a new multilocus sequencing type (MLST) related to the antibiotic resistance pattern of M. sciuri from animals in southern Thailand. Materials and Methods: We used 11 methicillin-resistant M. sciuri (MRMS) isolates in this study which were obtained from six horses, four cows, and one chicken of the previous study. Antimicrobial resistance (AMR) was re-evaluated based on the minimum inhibitory concentration using the VITEK® 2 automated system. Three AMR genes were examined, namely mecA, mecC, and blaZ. Staphylococcal chromosomal cassette mec (SCCmec) gene detection was performed through the multiplex polymerase chain reaction (PCR). Internal segments of the seven housekeeping genes, ack, aroE, ftsZ, glpK, gmk, pta1, and tpiA, were used for multilocus sequence typing. The population of resistant bacteria and the types of multidrugresistant, extensively drug-resistant, and pandemic drug-resistant bacteria were classified through descriptive analysis. Results: mecA and blaZ genes were detected in all isolates; however, the mecC gene was not observed in any isolate based on the PCR results. All MRMS isolates revealed a non-typable SCCmec. Seven MLSTs (71, 81, 120, 121, 122, 199, and 200) were identified in this study. Conclusion: The characteristics of MRMS in Southern Thailand were variable, particularly in cattle and horses. The antibiogram and SCCmec types of this pathogen remain concerns with regard to antibiotic-resistant gene transmission among Staphylococcus and Mammaliicoccus species. All MLSTs in Thailand revealed the distribution among clones in Asia, including the virulence of a zoonotic clone in Southern Thailand.

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