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Fang C, Zhou Z, Li J, Zhou M. Emergence of Staphylococcus argenteus in pediatrics: Molecular insights from a hospital in East China. Virulence 2024; 15:2396477. [PMID: 39185671 PMCID: PMC11364062 DOI: 10.1080/21505594.2024.2396477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 07/02/2024] [Accepted: 07/11/2024] [Indexed: 08/27/2024] Open
Abstract
Staphylococcus argenteus is a novel species within the Staphylococcus aureus complex and can cause serious bloodstream infections (BSIs) in humans, which have been mainly reported in adults, especially the elderly. In this study, we analyzed the molecular characterization of a strain of S. argenteus (22WJ8192) isolated from the peripheral vein blood sample of a seven-month-old female infant in Eastern China. The 22WJ8192 belonged to sequence type (ST)2250 and harbored six antibiotic-resistance genes and 53 virulence genes and was resistant to penicillin. Additionally, we conducted a comparative analysis of the molecular characteristics of S. argenteus sourced from various origins within the dataset, predominantly from the National Center for Biotechnology Information Collection (NCBI) genome database. Antibiotic-resistance genes blaR1, blaI_of_Z, blaZ, fosB-Saur, tet(L), aph(3")-IIIa, mecA, and dfrG were more prevalent among the strains of human origin. Virulence genes lukF-PV, sak, sdrE, scn, sdrC, and sdrD were more prevalent among strains of human origin. The presence of antibiotic-resistance genes blaR1, blaI_of_Z, blaZ, fosB-Saur, and aph(3")-IIIa in strain 22WJ8192 was also more common among strains of human origin in the dataset. Conversely, the antibiotic-resistance genes tet(L), mecA, and dfrG, typically found in strains of human origin, were not detected in 22WJ8192. Additionally, virulence genes lukF-PV, sak, sdrE, scn, sdrC, and sdrD present in 22WJ8192 exhibited a higher prevalence among strains of human origin in the dataset. In conclusion, this study emphasizes the potential of S. argenteus ST2250 to induce severe bloodstream infections in infants, shedding light on the molecular characteristics of this strain.
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Affiliation(s)
- Chao Fang
- Department of Clinical Laboratory, Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
| | - Zheng Zhou
- Department of Clinical Laboratory, Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
| | - Jianping Li
- Department of Clinical Laboratory, Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
| | - Mingming Zhou
- Department of Clinical Laboratory, Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
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Zhan Y, Tang R, Zhang Y, Li X, Fan Y, Wang J, Wang H, Lu Z. Fatal bacteremia caused by Staphylococcus argenteus: A case report. Medicine (Baltimore) 2023; 102:e35866. [PMID: 37986387 PMCID: PMC10659672 DOI: 10.1097/md.0000000000035866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 10/11/2023] [Indexed: 11/22/2023] Open
Abstract
RATIONALE Staphylococcus argenteus (S argenteus) is a novel and emerging species that is part of the Staphylococcus aureus (S aureus) complex. Fatal cases of bloodstream infection caused by S argenteus are rarely reported and should be considered in medical practice. PATIENT CONCERNS A 44-year-old male was admitted to our hospital with reduced appetite, high fever and unconsciousness. Laboratory tests indicated infection, muscle damage, and alkalosis in the patient. Brain computed tomography (CT) demonstrated small hematoma in left frontal lobe with peripheral cerebral edema. Chest CT demonstrating chronic bronchitis, emphysema, and bullae in the right lung. Blood culture was collected on the first day of hospitalization for microbial culture and pathological examination. DIAGNOSIS The isolate from blood culture was identified as S argenteus by MALDI-TOF MS after the patient death. INTERVENTIONS The patient was subjected to empirical antibiotic treatment with piperacillin/tazobactam. OUTCOMES After 48 hours of hospitalization, the patient died after ineffective rescue. LESSONS The patient had long-term heavy drinking and smoking as well as chronic malnutrition, which may account for his immune deficiency. The immunocompromised people are more vulnerable to infection by S argenteus and then develop bacteremia. The use of piperacillin/tazobactam may have contributed to the patient death.
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Affiliation(s)
- Yu Zhan
- Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ruizhi Tang
- Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yingmiao Zhang
- Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xun Li
- Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yue Fan
- Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Wang
- Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hui Wang
- Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhongxin Lu
- Department of Medical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Cancer Research Institute of Wuhan, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Chen JHK, Leung HY, Wong CMC, Yuen KY, Cheng VCC. Prevalence and Characteristics of Invasive Staphylococcus argenteus among Patients with Bacteremia in Hong Kong. Microorganisms 2023; 11:2435. [PMID: 37894094 PMCID: PMC10609611 DOI: 10.3390/microorganisms11102435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 09/25/2023] [Accepted: 09/25/2023] [Indexed: 10/29/2023] Open
Abstract
Staphylococcus argenteus is a novel Staphylococcus species derived from Staphylococcus aureus. Information on the prevalence and genetic characteristics of invasive S. argenteus in Asia is limited. In this study, 275 invasive S. aureus complex strains were retrieved from blood culture specimens in Hong Kong and re-analyzed using MALDI-TOF mass spectrometry and an in-house multiplex real-time PCR for S. argenteus. The prevalence of invasive S. argenteus in Hong Kong was found to be 4.0% (11/275). These strains were primarily susceptible to commonly used antibiotics, except penicillin. Whole-genome sequencing revealed the circulation of three S. argenteus genotypes (ST-2250, ST-1223, and ST-2854) in Hong Kong, with ST-2250 and ST-1223 being the predominant genotypes. The local ST-2250 and ST-1223 strains showed close phylogenetic relationships with isolates from mainland China. Antimicrobial-resistant genes (fosB, tet-38, mepA, blaI, blaZ) could be found in nearly all local S. argenteus strains. The ST-1223 and ST-2250 genotypes carried multiple staphylococcal enterotoxin genes that could cause food poisoning and toxic shock syndrome. The CRISPR/Cas locus was observed only in the ST-2250 strains. This study provides the first report on the molecular epidemiology of invasive S. argenteus in Hong Kong, and further analysis is needed to understand its transmission reservoir.
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Affiliation(s)
- Jonathan H. K. Chen
- Department of Microbiology, Queen Mary Hospital, Hong Kong SAR, China; (H.-Y.L.); (V.C.C.C.)
- Department of Microbiology, School of Clinical Medicine, The University of Hong Kong, Hong Kong SAR, China; (C.M.C.W.); (K.-Y.Y.)
| | - Hoi-Yi Leung
- Department of Microbiology, Queen Mary Hospital, Hong Kong SAR, China; (H.-Y.L.); (V.C.C.C.)
| | - Charles M. C. Wong
- Department of Microbiology, School of Clinical Medicine, The University of Hong Kong, Hong Kong SAR, China; (C.M.C.W.); (K.-Y.Y.)
| | - Kwok-Yung Yuen
- Department of Microbiology, School of Clinical Medicine, The University of Hong Kong, Hong Kong SAR, China; (C.M.C.W.); (K.-Y.Y.)
| | - Vincent C. C. Cheng
- Department of Microbiology, Queen Mary Hospital, Hong Kong SAR, China; (H.-Y.L.); (V.C.C.C.)
- Infection Control Team, Queen Mary Hospital, Hong Kong West Cluster, Hong Kong SAR, China
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Riedel T, Bunk B, Schröttner P. Editorial: Characterization of rare and recently first described human pathogenic bacteria. Front Cell Infect Microbiol 2023; 13:1212627. [PMID: 37469593 PMCID: PMC10353429 DOI: 10.3389/fcimb.2023.1212627] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 06/19/2023] [Indexed: 07/21/2023] Open
Affiliation(s)
- Thomas Riedel
- Department of Microbial Ecology und Diversity Research, Leibniz Institute, German Collection of Microorganisms and Cell Cultures (DSMZ) GmbH, Braunschweig, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Braunschweig, Germany
| | - Boyke Bunk
- Department of Bioinformatics and Database, Leibniz Institute, German Collection of Microorganisms and Cell Cultures (DSMZ) GmbH, Braunschweig, Germany
| | - Percy Schröttner
- Carl Gustav Carus Faculty of Medicine, University Hospital Carl Gustav Carus Dresden, Institute for Medical Microbiology and Virology, Technical University (TU) Dresden, Dresden, Germany
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Shittu AO, Layer-Nicolaou F, Strommenger B, Nguyen MT, Bletz S, Mellmann A, Schaumburg F. First Report of a Methicillin-Resistant, High-Level Mupirocin-Resistant Staphylococcus argenteus. Front Cell Infect Microbiol 2022; 12:860163. [PMID: 35372120 PMCID: PMC8964999 DOI: 10.3389/fcimb.2022.860163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 02/09/2022] [Indexed: 11/30/2022] Open
Abstract
We describe the identification of a methicillin-resistant, high-level mupirocin-resistant Staphylococcus argenteus. The isolate (1801221) was characterized as t6675-ST2250-SCCmecIVc, and whole-genome sequencing revealed that the isolate possessed two plasmids. One plasmid (34,870 bp), designated p1_1801221 with rep23, harboured the mupirocin resistance (mupA) gene. The second plasmid (20,644 bp), assigned as p2_1801221 with rep5a and rep16, carried the resistance determinants for penicillin (blaZ) and cadmium (cadD). Phylogenetic analysis revealed that the isolate clustered with the European ST2250 lineage. The overall high similarity of both plasmids in S. argenteus with published DNA sequences of Staphylococcus aureus plasmids strongly suggests an interspecies transfer. The pathogenic potential, community and nosocomial spread, and acquisition of antibiotic resistance gene determinants, including the mupA gene by S. argenteus, highlight its clinical significance and the need for its correct identification.
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Affiliation(s)
- Adebayo Osagie Shittu
- Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Nigeria
- Institute of Medical Microbiology, University Hospital Münster, Münster, Germany
- *Correspondence: Adebayo Osagie Shittu,
| | - Franziska Layer-Nicolaou
- National Reference Centre (NRC) for Staphylococci and Enterococci, Division of Nosocomial Pathogens and Antibiotic Resistances, Department of Infectious Diseases, Robert Koch Institute, Wernigerode Branch, Wernigerode, Germany
| | - Birgit Strommenger
- National Reference Centre (NRC) for Staphylococci and Enterococci, Division of Nosocomial Pathogens and Antibiotic Resistances, Department of Infectious Diseases, Robert Koch Institute, Wernigerode Branch, Wernigerode, Germany
| | - Minh-Thu Nguyen
- Institute of Medical Microbiology, University Hospital Münster, Münster, Germany
| | - Stefan Bletz
- Institute for Hygiene, University Hospital Münster, Münster, Germany
| | | | - Frieder Schaumburg
- Institute of Medical Microbiology, University Hospital Münster, Münster, Germany
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Staphylococcus massiliensis isolated from human blood cultures, Germany, 2017-2020. Eur J Clin Microbiol Infect Dis 2022; 41:663-669. [PMID: 35079932 PMCID: PMC8789367 DOI: 10.1007/s10096-022-04409-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 01/18/2022] [Indexed: 11/06/2022]
Abstract
Clinical and laboratory data on newly described staphylococcal species is rare, which hampers decision-making when such pathogens are detected in clinical specimens. Here, we describe Staphylococcus massiliensis detected in three patients at a university hospital in southwest Germany. We report the discrepancy of microbiological findings between matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, 16S-rRNA polymerase chain reaction, and whole-genome sequencing for all three isolates. Our findings highlight the diagnostic pitfalls pertinent to novel and non-model organisms in daily microbiological practice, in whom the correct identification is dependent on database accuracy.
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Wakabayashi Y, Takemoto K, Iwasaki S, Yajima T, Kido A, Yamauchi A, Kuroiwa K, Kumai Y, Yoshihara S, Tokumoto H, Kawatsu K, Yasugi M, Miyake M. Isolation and characterization of Staphylococcus argenteus strains from retail foods and slaughterhouses in Japan. Int J Food Microbiol 2021; 363:109503. [PMID: 34968888 DOI: 10.1016/j.ijfoodmicro.2021.109503] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 12/05/2021] [Accepted: 12/11/2021] [Indexed: 11/20/2022]
Abstract
Staphylococcus argenteus has been recently established as a novel species of Staphylococcus aureus complex. It is known to cause various human diseases, such as skin and soft-tissue infections, sepsis, and staphylococcal food poisoning, although the source of infection has not been clearly described. In food poisoning cases, the source of bacterial contamination in food is unknown. This study examined the prevalence of S. argenteus among retail fresh food and poultry slaughterhouses in Japan. Among 642 food samples examined, successful isolation of S. argenteus was achieved in 21 of 151 (13.9%) chicken samples. No isolations from pork, beef, fish, or vegetables in retail markets were confirmed. Multiple-locus sequence typing revealed that the 21 isolates were classified into four sequence types (ST) that were divided into 14 subtypes using spa-typing. All food isolates were susceptible to methicillin and did not show positivity for the Panton-Valentine leukocidin gene. When bacteria were isolated from two poultry slaughterhouses in the same region, 14 S. argenteus strains were successfully isolated from only one slaughterhouse. Thirteen of 14 strains were isolated from a poultry carcass and slaughterhouse environments during a certain sampling period and were all classified as ST5961 with identical spa-type. Also, the number of single nucleotide variants (SNVs) detected on the core genomes of the same 13 strains were between 0 and 17, suggesting a long-term inhabitation of an S. argenteus strain inside the facility. Furthermore, one isolate from chicken meat was also genetically linked with the same lineage of slaughterhouse isolates, with ≤15 SNVs being detected. Additionally, one slaughterhouse isolate from chiller water and three chicken isolates were classified into the same cluster by phylogenetic analysis, although the number of pairwise SNVs ranged from 62 to 128. To the best of the authors' knowledge, this is the first study that demonstrated S. argenteus in a food processing facility and the possible bacterial contamination on food during food processing.
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Affiliation(s)
- Yuki Wakabayashi
- Bacteriology Section, Division of Microbiology, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka, Japan; Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku Ourai Kita, Izumisano, Osaka, Japan
| | - Kohei Takemoto
- Osaka Prefectural Government Poultry Inspection Center, 2-11-13 Sangenyahigashi, Taisyo-ku, Osaka, Japan
| | - Satomi Iwasaki
- Osaka Prefectural Government Poultry Inspection Center, 2-11-13 Sangenyahigashi, Taisyo-ku, Osaka, Japan
| | - Tomoya Yajima
- Osaka Prefectural Government Poultry Inspection Center, 2-11-13 Sangenyahigashi, Taisyo-ku, Osaka, Japan
| | - Akiko Kido
- Osaka Prefectural Government Poultry Inspection Center, 2-11-13 Sangenyahigashi, Taisyo-ku, Osaka, Japan
| | - Akiko Yamauchi
- Osaka Prefectural Government Poultry Inspection Center, 2-11-13 Sangenyahigashi, Taisyo-ku, Osaka, Japan
| | - Kyoko Kuroiwa
- Osaka Prefectural Government Poultry Inspection Center, 2-11-13 Sangenyahigashi, Taisyo-ku, Osaka, Japan
| | - Yuko Kumai
- Osaka Prefectural Government Poultry Inspection Center, 2-11-13 Sangenyahigashi, Taisyo-ku, Osaka, Japan
| | - Shizue Yoshihara
- Department of Biological Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, Japan
| | - Hayato Tokumoto
- Department of Biological Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, Japan
| | - Kentaro Kawatsu
- Bacteriology Section, Division of Microbiology, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka, Japan
| | - Mayo Yasugi
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku Ourai Kita, Izumisano, Osaka, Japan
| | - Masami Miyake
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku Ourai Kita, Izumisano, Osaka, Japan.
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8
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Phenotypic and Genomic Profiling of Staphylococcus argenteus in Canada and the United States and Recommendations for Clinical Result Reporting. J Clin Microbiol 2021; 59:JCM.02470-20. [PMID: 33731414 DOI: 10.1128/jcm.02470-20] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 03/07/2021] [Indexed: 11/20/2022] Open
Abstract
Staphylococcus argenteus is a newly described species, formerly known as S. aureus clonal complex 75 (CC75). Here, we describe the largest collection of S. argenteus isolates in North America, highlighting identification challenges. We present phenotypic and genomic characteristics and provide recommendations for clinical reporting. Between 2017 and 2019, 22 isolates of S. argenteus were received at 2 large reference laboratories for identification. Identification with routine methods (biochemical, matrix-assisted laser desorption ionization-time of flight mass spectrometry [MALDI-TOF MS], 16S rRNA gene analysis) proved challenging to confidently distinguish these isolates from S. aureus Whole-genome sequencing analysis was employed to confirm identifications. Using several different sequence-based analyses, all clinical isolates under investigation were confirmed to be S. argenteus with clear differentiation from S. aureus Seven of 22 isolates were recovered from sterile sites, 11 from nonsterile sites, and 4 from surveillance screens. While sequence types ST1223/coa type XV, ST2198/coa type XIV, and ST2793/coa type XId were identified among the Canadian isolates, the majority of isolates (73%) belonged to multilocus sequence types (MLST) ST2250/coa type XId and exhibited a high degree of homology at the genomic level. Despite this similarity, 5 spa types were identified among ST2250 isolates, demonstrating some diversity between strains. Several isolates carried mecA, as well as other resistance and virulence determinants (e.g., PVL, TSST-1) commonly associated with S. aureus Based on our findings, the growing body of literature on S. argenteus, the potential severity of infections, and possible confusion associated with reporting, including use of incorrect breakpoints for susceptibility results, we make recommendations for clinical laboratories regarding this organism.
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Michels R, Last K, Becker SL, Papan C. Update on Coagulase-Negative Staphylococci-What the Clinician Should Know. Microorganisms 2021; 9:microorganisms9040830. [PMID: 33919781 PMCID: PMC8070739 DOI: 10.3390/microorganisms9040830] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/03/2021] [Accepted: 04/06/2021] [Indexed: 02/07/2023] Open
Abstract
Coagulase-negative staphylococci (CoNS) are among the most frequently recovered bacteria in routine clinical care. Their incidence has steadily increased over the past decades in parallel to the advancement in medicine, especially in regard to the utilization of foreign body devices. Many new species have been described within the past years, while clinical information to most of those species is still sparse. In addition, interspecies differences that render some species more virulent than others have to be taken into account. The distinct populations in which CoNS infections play a prominent role are preterm neonates, patients with implanted medical devices, immunodeficient patients, and those with other relevant comorbidities. Due to the property of CoNS to colonize the human skin, contamination of blood cultures or other samples occurs frequently. Hence, the main diagnostic hurdle is to correctly identify the cases in which CoNS are causative agents rather than contaminants. However, neither phenotypic nor genetic tools have been able to provide a satisfying solution to this problem. Another dilemma of CoNS in clinical practice pertains to their extensive antimicrobial resistance profile, especially in healthcare settings. Therefore, true infections caused by CoNS most often necessitate the use of second-line antimicrobial drugs.
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Complete Genome Sequences of Staphylococcus argenteus Tokyo13064 and Tokyo13069, Isolated from Specimens Obtained during a Food Poisoning Outbreak in Tokyo, Japan. Microbiol Resour Announc 2021; 10:10/10/e01447-20. [PMID: 33707339 PMCID: PMC7953302 DOI: 10.1128/mra.01447-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
The complete genome sequences of two Staphylococcus argenteus strains, Tokyo13064 and Tokyo13069, isolated from human feces and suspected causative foods during a staphylococcal food poisoning outbreak, consist of 2,750,811-bp and 2,751,556-bp circular chromosomes and 2,543 and 2,548 genome annotation-predicted coding DNA sequences, respectively, with 19 rRNAs, 61 tRNAs, and 1 CRISPR each. The complete genome sequences of two Staphylococcus argenteus strains, Tokyo13064 and Tokyo13069, isolated from human feces and suspected causative foods during a staphylococcal food poisoning outbreak, consist of 2,750,811-bp and 2,751,556-bp circular chromosomes and 2,543 and 2,548 genome annotation-predicted coding DNA sequences, respectively, with 19 rRNAs, 61 tRNAs, and 1 CRISPR each.
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Methicillin-resistant Staphylococcus argenteus in the Netherlands: not a new arrival. Eur J Clin Microbiol Infect Dis 2021; 40:1583-1585. [PMID: 33629211 DOI: 10.1007/s10096-021-04204-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 02/16/2021] [Indexed: 10/22/2022]
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12
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Aung MS, Urushibara N, Kawaguchiya M, Hirose M, Ike M, Ito M, Kobayashi N. Distribution of Virulence Factors and Resistance Determinants in Three Genotypes of Staphylococcus argenteus Clinical Isolates in Japan. Pathogens 2021; 10:pathogens10020163. [PMID: 33546443 PMCID: PMC7913748 DOI: 10.3390/pathogens10020163] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 11/16/2022] Open
Abstract
Staphylococcus argenteus, a novel staphylococcal species independent of S. aureus, causes a wide spectrum of infectious diseases. As detection of this species from humans and animals has been increasingly reported worldwide, its growing virulence and drug resistance via external genetic determinants has become concerning. In this study, the prevalence and genetic characteristics of virulence factors and drug resistance determinants were investigated for 82 S. argenteus clinical isolates in Hokkaido, Japan, for a one-year period starting in August 2019. These S. argenteus isolates corresponded to 0.66% of the total number of S. aureus isolates collected in the same period. The most prevalent genotype was sequence type (ST) 2250 and staphylocoagulase (coa) genotype XId (45.1%, n = 37), followed by ST1223-coa XV (30.5%, n = 25) and ST2198-coa XIV (24.4%, n = 20). Panton-Valentine leukocidin genes (lukS-PV-lukF-PV) were identified in a single ST2250 isolate. Only ST1223 isolates had the enterotoxin gene cluster (egc-2), seb, and selw (detection rate; 100%, 60%, and 84%, respectively), while sec, sey, sel26-sel27, tst-1 were only detected in ST2250 isolates (detection rate; 10.8%, 100%, 67.6%, and 10.8%, respectively). ST2198 isolates harbored selx at a significantly higher rate (60%) than isolates of other STs. Although most of S. argenteus isolates were susceptible to antimicrobials examined, ST2198 showed higher resistance rates to penicillin, macrolides, and aminoglycosides than other STs, and it harbored various resistance genes such as blaZ, erm(C), msr(A), lnuA, and aac(6′)-Ie-aph(2″)-Ia. Only one ST2250 isolate possessed SCCmec-IVc, showing resistance to oxacillin. blaZ was the most prevalent determinant of resistance in the three STs and belonged to two plasmid groups and a chromosomal group, suggesting its diverse origin. lnu(A) in ST2198 isolates was assigned to a major cluster with various staphylococcal species. The present study indicates that the prevalence of virulence factors and drug resistance profile/determinants differ depending on the lineage (ST) of S. argenteus.
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Affiliation(s)
- Meiji Soe Aung
- Department of Hygiene, Sapporo Medical University School of Medicine, Hokkaido, Sapporo 060-8556, Japan; (N.U.); (M.K.); (N.K.)
- Correspondence: ; Tel.: +81-11-611-2111
| | - Noriko Urushibara
- Department of Hygiene, Sapporo Medical University School of Medicine, Hokkaido, Sapporo 060-8556, Japan; (N.U.); (M.K.); (N.K.)
| | - Mitsuyo Kawaguchiya
- Department of Hygiene, Sapporo Medical University School of Medicine, Hokkaido, Sapporo 060-8556, Japan; (N.U.); (M.K.); (N.K.)
| | - Mina Hirose
- Division of Pediatric Dentistry, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu 061-0293, Japan;
| | - Miyo Ike
- Sapporo Clinical Laboratory, Incorporated, Hokkaido, Sapporo 060-0005, Japan; (M.I.); (M.I.)
| | - Masahiko Ito
- Sapporo Clinical Laboratory, Incorporated, Hokkaido, Sapporo 060-0005, Japan; (M.I.); (M.I.)
| | - Nobumichi Kobayashi
- Department of Hygiene, Sapporo Medical University School of Medicine, Hokkaido, Sapporo 060-8556, Japan; (N.U.); (M.K.); (N.K.)
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