Clinical and Molecular Epidemiology of Staphylococcus argenteus Infections in Thailand

Thaipadungpanit, Janjira; Amornchai, Premjit; Nickerson, Emma K.; Wongsuvan, Gumphol; Wuthiekanun, Vanaporn; Limmathurotsakul, Direk; Peacock, Sharon J.

doi:10.1128/jcm.03049-14

Cited by 75 publications

(113 citation statements)

References 16 publications

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“…All three isolates carried the common virulence hla , hlb, and clf A. Surprisingly, previous studies have reported that S. argenteus is negative for the pvl (Thaipadungpanit et al., ), but we found the pvl in two S. argenteus isolates in this study. These three S. argenteus isolates, isolated from rabbits, had the ability to cause severe illness in these animals, particularly via the presence of clf A, which usually contributes to abscess formation in rabbits, as previously reported (Malachowa et al., ).…”

Section: Discussioncontrasting

confidence: 80%

“…Other molecular techniques, such as matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry (MALDI‐TOF MS), nonribosomal peptide synthetase (NRPS) gene amplification, and multilocus sequence type (MLST) determination, were thus recommended in many publications as tools for the identification of S. argenteus (Chantratita et al., ; Schuster et al., ; Zhang et al., ). Some sequencing types of S. aureus were previously confirmed to be S. argenteus , such as ST2793, ST1223, and ST2250 (Chantratita et al., ; Schuster et al., ; Thaipadungpanit et al., ; Tong et al., ).…”

Section: Introductionmentioning

confidence: 96%

“…Recently, a novel coagulase‐positive Staphylococcus species, S. argenteus ( S. aureus complex), was identified from clinical human and animal sources (Argudín et al., ; Chantratita et al., ; Schuster et al., ; Thaipadungpanit et al., ; Tong et al., ). Bacterial colonies were characterised by a nonpigmented, creamy white appearance and showed β‐hemolysis on blood agar.…”

Section: Introductionmentioning

confidence: 99%

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Staphylococcus argenteus from rabbits in Thailand

et al. 2018

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Staphylococcus argenteus, a novel species of the genus Staphylococcus or a member of the S. aureus complex, is closely related to S. aureus and is usually misidentified. In this study, the presence of S. argenteus in isolated S. aureus was investigated in 67 rabbits with abscess lesions during 2014-2016. Among 19 S. aureus complex isolates, three were confirmed to be S. argenteus by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, nonribosomal peptide synthetase gene amplification, and multilocus sequence type. All S. aureus complex isolates, including the S. aureus isolates, were examined for their antimicrobial resistance phenotype by disk diffusion and for their resistance genotype by PCR assays. Among the S. argenteus isolates, one was susceptible to all antimicrobial drugs and the other two were resistant to penicillin and doxycycline. In contrast, most S. aureus isolates were resistant to penicillin (37.5%), and gentamicin (12.5%). Moreover, S. aureus isolates harbored the blaZ, mecA, aacA-aphD, and mrs(A) as well as mutations of gyrA and grlA, but S. argenteus isolates carried solely the blaZ. S. argenteus isolates were investigated for enterotoxin (sea-sed) and virulence genes by PCR. One isolate carried sea, sec, and sed, whereas the other two isolates carried only sea or sed. No isolate carried seb and see. All three S. argenteus isolates carried hla, hlb, and clfA, followed by pvl, whereas coa, spa (IgG-binding region), and spa (x region) were not detected in the three isolates. This paper presents the first identification of S. argenteus from rabbits in Thailand. S. argenteus might be pathogenic because the isolates carried virulence genes. Moreover, antimicrobial resistance was observed. Investigations of this new bacterial species should be conducted in other animal species as well as in humans.

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Section: Discussioncontrasting

confidence: 80%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Staphylococcus argenteus from rabbits in Thailand

et al. 2018

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“…ST75, ST850, ST883, ST1223, ST1304, ST1850) [2][3][4][5]. Such strains were isolated mainly from indigenous populations in Australia and French Guyana [2,4,6], but also in Cambodia, Fiji, Trinidad and Tobago, Thailand [7][8][9][10] and from animals in Africa [11,12]. No strain harbouring the PVL was described among these isolates, which were considered as having an attenuated virulence compared with other S. aureus strains [5,13,14].…”

Section: Discussionmentioning

confidence: 99%

Community-acquired infections due to Staphylococcus argenteus lineage isolates harbouring the Panton-Valentine leucocidin, France, 2014

Dupieux

Blondé²,

Bouchiat

et al. 2015

Eurosurveillance

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We describe two cases of human infections caused by Staphylococcus aureus clonal complex (CC) 75, also called Staphylococcus argenteus, harbouring the Panton-Valentine leucocidin (PVL). These two sporadic cases were community-acquired, and identified in France in 2014. Both had an epidemiological link with Mayotte, an overseas department of France located in the Indian Ocean off the south-eastern African coast. This report illustrates that, contrary to previous descriptions, S. argenteus can acquire important virulence factors and be responsible for severe infections.In 2014, two cases of human infections caused by Staphylococcus aureus isolates belonging to clonal complex (CC) 75 lineage, also called Staphylococcus argenteus, harbouring the Panton-Valentine leucocidin (PVL) occurred in France. The two cases were sporadic and community-acquired, and had an epidemiological link with Mayotte, a French archipelago in the Indian Ocean. The two strains affecting the respective cases were both isolated from blood culture.

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“…A study in Thailand demonstrated that 4.1% of isolates believed to be S. aureus were subsequently determined to be S. argenteus (27). This organism was associated primarily with community-acquired skin and soft tissue infections, although bacteremia and bone and joint infections were seen in three and two patients, respectively (27).…”

Section: Gram-positive Coccimentioning

confidence: 99%

What's in a Name? New Bacterial Species and Changes to Taxonomic Status from 2012 through 2015

Munson

Carroll

2017

J Clin Microbiol

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Technological advancements in fields such as molecular genetics and the human microbiome have resulted in an unprecedented recognition of new bacterial genus/species designations by the International Journal of Systematic and Evolutionary Microbiology. Knowledge of designations involving clinically significant bacterial species would benefit clinical microbiologists in the context of emerging pathogens, performance of accurate organism identification, and antimicrobial susceptibility testing. In anticipation of subsequent taxonomic changes being compiled by the Journal of Clinical Microbiology on a biannual basis, this compendium summarizes novel species and taxonomic revisions specific to bacteria derived from human clinical specimens from the calendar years 2012 through 2015.KEYWORDS anaerobes, bacteria, Gram-negative bacteria, Gram-positive bacteria, taxonomy H uman microbiome studies, particularly those involving genome sequencing, have resulted in a seeming explosion of novel bacterial taxonomy. While many of these organisms appear to play a commensal role in site-specific ecology, some of the organisms may be of clinical significance in various patient populations. Moreover, enhanced studies of known bacterial genomes in a variety of applications, including those of an epidemiologic nature, have given rise to revisions and amendments to accepted bacterial taxonomy. Summaries of microbial taxonomy updates, such as those introduced in this edition of the Journal of Clinical Microbiology, are essential to routine practice in the clinical microbiology laboratory.Since 2014, laboratories subscribing to the College of American Pathologists accreditation program have encountered checklist standard MIC.11375 in the context of biennial inspection exercises. The standard (1) requires laboratories to assimilate "taxonomic changes that potentially affect the choice of appropriate antimicrobials to report and/or the interpretative breakpoints to use." Cited as an example for the context of this standard is the Gram-negative bacillus with the former taxonomic designation Actinobacillus actinomycetemcomitans. The taxonomic revision in 1985 (2) resulting in organism classification within the genus Haemophilus subsequently enabled antimicrobial susceptibility testing of clinically significant isolates using standards outlined in Table 2E of CLSI supplement M100S (example provided in [3]). Haemophilus test medium, with a 16-to 18-hour incubation in 5% CO 2 enrichment, could be utilized for disk diffusion. Haemophilus test medium broth could also be inoculated for broth microdilution testing with 20-to 24-hour incubation in ambient air.Subsequent reclassification of this organism into the genus Aggregatibacter (4) has resulted in the transition of susceptibility testing guidelines to those specific to (former) HACEK group organisms (Aggregatibacter spp., Cardiobacterium spp., Eikenella corrodens, and Kingella spp.) in Table 9 of the CLSI guideline M45 (5).

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Clinical and Molecular Epidemiology of Staphylococcus argenteus Infections in Thailand

Cited by 75 publications

References 16 publications

Staphylococcus argenteus from rabbits in Thailand

Staphylococcus argenteus from rabbits in Thailand

Community-acquired infections due to Staphylococcus argenteus lineage isolates harbouring the Panton-Valentine leucocidin, France, 2014

What's in a Name? New Bacterial Species and Changes to Taxonomic Status from 2012 through 2015

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