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Gatti G, Taddei F, Marzucco A, Montanari MS, Dirani G, Zannoli S, Grumiro L, Brandolini M, Colosimo C, Dionisi L, Ingletto L, De Pascali AM, Scagliarini A, Sambri V, Cricca M. Isolation and Genomic Analysis of a Case of Staphylococcus argenteus ST2250 Related to Sepsis in Italy. Microorganisms 2024; 12:1485. [PMID: 39065252 PMCID: PMC11279301 DOI: 10.3390/microorganisms12071485] [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: 06/30/2024] [Revised: 07/09/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
Staphylococcus argenteus, identified in 2006, represents a challenging case of bacterial taxonomic identification because of its high similarity to Staphylococcus aureus. In this context, neither mass spectrometry (MS) nor 16S gene analysis cannot precisely reveal the difference between the two species. In our study, the sensitivity to antibiotics of S. argenteus isolated from blood culture was tested, and the investigation of the bacterial genome was performed by Multi-Locus Sequence Typing (MLST) and Whole-Genome Next-Generation Sequencing (WG-NGS). The pathogen was identified as ST2250 and presented perfectly matched resistance genes, namely aph(3')-III, mgrA, and sepA, whereas the virulence gene detected was scn. Two plasmids were found: the pSAS plasmid, belonging to the family of Inc18, and plasmid pN315, belonging to the Rep3 group. The epidemiological distribution and the spread of S. argenteus infection are scarcely documented, particularly when associated with sepsis. Therefore, a correct taxonomy identification, antibiogram, and resistance gene analysis may help in acquiring knowledge about this bacterium and implement its detection and treatment.
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Affiliation(s)
- Giulia Gatti
- Department of Medical and Surgical Sciences—DIMEC, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (M.B.); (C.C.); (L.D.); (L.I.); (A.M.D.P.); (A.S.); (V.S.); (M.C.)
| | - Francesca Taddei
- Unit of Microbiology, The Great Romagna Hub Laboratory, 47522 Cesena, Italy; (F.T.); (A.M.); (M.S.M.); (G.D.); (S.Z.); (L.G.)
| | - Anna Marzucco
- Unit of Microbiology, The Great Romagna Hub Laboratory, 47522 Cesena, Italy; (F.T.); (A.M.); (M.S.M.); (G.D.); (S.Z.); (L.G.)
| | - Maria Sofia Montanari
- Unit of Microbiology, The Great Romagna Hub Laboratory, 47522 Cesena, Italy; (F.T.); (A.M.); (M.S.M.); (G.D.); (S.Z.); (L.G.)
| | - Giorgio Dirani
- Unit of Microbiology, The Great Romagna Hub Laboratory, 47522 Cesena, Italy; (F.T.); (A.M.); (M.S.M.); (G.D.); (S.Z.); (L.G.)
| | - Silvia Zannoli
- Unit of Microbiology, The Great Romagna Hub Laboratory, 47522 Cesena, Italy; (F.T.); (A.M.); (M.S.M.); (G.D.); (S.Z.); (L.G.)
| | - Laura Grumiro
- Unit of Microbiology, The Great Romagna Hub Laboratory, 47522 Cesena, Italy; (F.T.); (A.M.); (M.S.M.); (G.D.); (S.Z.); (L.G.)
| | - Martina Brandolini
- Department of Medical and Surgical Sciences—DIMEC, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (M.B.); (C.C.); (L.D.); (L.I.); (A.M.D.P.); (A.S.); (V.S.); (M.C.)
| | - Claudia Colosimo
- Department of Medical and Surgical Sciences—DIMEC, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (M.B.); (C.C.); (L.D.); (L.I.); (A.M.D.P.); (A.S.); (V.S.); (M.C.)
| | - Laura Dionisi
- Department of Medical and Surgical Sciences—DIMEC, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (M.B.); (C.C.); (L.D.); (L.I.); (A.M.D.P.); (A.S.); (V.S.); (M.C.)
| | - Ludovica Ingletto
- Department of Medical and Surgical Sciences—DIMEC, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (M.B.); (C.C.); (L.D.); (L.I.); (A.M.D.P.); (A.S.); (V.S.); (M.C.)
| | - Alessandra Mistral De Pascali
- Department of Medical and Surgical Sciences—DIMEC, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (M.B.); (C.C.); (L.D.); (L.I.); (A.M.D.P.); (A.S.); (V.S.); (M.C.)
| | - Alessandra Scagliarini
- Department of Medical and Surgical Sciences—DIMEC, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (M.B.); (C.C.); (L.D.); (L.I.); (A.M.D.P.); (A.S.); (V.S.); (M.C.)
| | - Vittorio Sambri
- Department of Medical and Surgical Sciences—DIMEC, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (M.B.); (C.C.); (L.D.); (L.I.); (A.M.D.P.); (A.S.); (V.S.); (M.C.)
- Unit of Microbiology, The Great Romagna Hub Laboratory, 47522 Cesena, Italy; (F.T.); (A.M.); (M.S.M.); (G.D.); (S.Z.); (L.G.)
| | - Monica Cricca
- Department of Medical and Surgical Sciences—DIMEC, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (M.B.); (C.C.); (L.D.); (L.I.); (A.M.D.P.); (A.S.); (V.S.); (M.C.)
- Unit of Microbiology, The Great Romagna Hub Laboratory, 47522 Cesena, Italy; (F.T.); (A.M.); (M.S.M.); (G.D.); (S.Z.); (L.G.)
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Supriadi IR, Santosaningsih D, Budayanti NS, Zandijk WHA, Rijfkogel A, Klaassen CHW, Severin JA. Identification and characterization of Staphylococcus argenteus from Indonesia. Int J Med Microbiol 2024; 316:151629. [PMID: 39053073 DOI: 10.1016/j.ijmm.2024.151629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/31/2024] [Accepted: 07/09/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND In 2015, Staphylococcus argenteus was reported for the first time as a novel species of the Staphylococcus aureus complex. While S. argenteus has been found in many countries, its presence in Indonesia has not been reported yet. Our aim is to confirm S. argenteus presence in Indonesia, describe its characteristics and analyze its genomic diversity. METHODS The S. aureus isolates used in this study were collected from patients with skin and soft tissue infections in Indonesia, between July 2009 to February 2010. Randomly selected isolates were recultured from -80 C° stocks and analyzed using matrix-assisted laser desorption/ionization - time of flight (MALDI-TOF). Isolates identified as S. argenteus, S. roterodami, or S. schweitzeri and S. aureus with a low score in the MALDI-TOF analysis were analyzed by a real-time PCR targeting the nucA gene able to identify true S. argenteus. Isolates identified as S. argenteus were further characterized by whole genome sequencing. Vitek®2 (bioMérieux) was used for antimicrobial susceptibility testing. RESULTS Fifteen isolates were identified as S. argenteus, with the majority belonging to ST2250. Two pairs of isolates proved to be identical by core genome multilocus sequence typing analysis. Most isolates were susceptible to all antibiotics tested, except for seven isolates (46.7 %) that were resistant to benzylpenicillin, and one isolate was resistant to tetracycline (6.7 %). The presence of resistance genes blaZ and tet(45) correlated with these findings. Notably, the sey enterotoxin gene was prevalent in 80 % of the isolates. Other virulence factor genes were less prevalent. Plasmid replicon types in S. argenteus were also known to S. aureus. CONCLUSION Our study reveals the occurrence of S. argenteus in Indonesia. The diversity within Indonesian S. argenteus matches the global diversity of S. argenteus. Identical isolates between patients indicate potential transmission events. A lower prevalence of a broad panel of virulence factors suggests that S. argenteus is less virulent than S. aureus.
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Affiliation(s)
- Indri Rooslamiati Supriadi
- National Biomedical and Genome Science Institute, Directorate of Healthcare Services, Ministry of Health of Indonesia, Jakarta, Indonesia; Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Cardiology, University Medical Centre Utrecht, the Netherlands
| | - Dewi Santosaningsih
- Department of Clinical Microbiology, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Nyoman S Budayanti
- Department of Microbiology, Faculty of Medicine, Universitas Udayana/Udayana University Hospital, Badung, Indonesia
| | - Willemien H A Zandijk
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Amber Rijfkogel
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Corné H W Klaassen
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Juliëtte A Severin
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, the Netherlands.
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Wakabayashi Y, Kumeda Y, Yoshihara S, Tokumoto H, Kawatsu K, Miyake M. Prevalence of Staphylococcus argenteus among food handlers, kitchen utensils, and food samples in Japan. Lett Appl Microbiol 2024; 77:ovae031. [PMID: 38544318 DOI: 10.1093/lambio/ovae031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 03/01/2024] [Accepted: 03/26/2024] [Indexed: 04/17/2024]
Abstract
Staphylococcus argenteus has received increased attention from an aspect of food safety since several food poisoning outbreaks caused by the bacterium were reported in Japan. However, S. argenteus prevalence among food handlers and utensils has not yet been investigated. In this study, we investigated S. argenteus prevalence among a collection of coagulase-positive staphylococci (CPS) that were isolated during food sanitary inspections in Japan. Out of a total of 191 CPS isolates, 14 were identified as S. argenteus. One was isolated from shelled shrimp, nine were isolated from food handlers' hand swabs, and four were isolated from kitchen utensils. Whole-genome sequencing revealed that transmission of S. argenteus from human hands to utensils was possible. Though all 14 isolates were negative for the pvl and tst-1 genes, 6 harbored the seb gene. Only 21.4% of S. argenteus isolates were resistant to antibiotics, while 62.1% of the S. aureus isolates from the same sources were confirmed to be resistant. To the best of our knowledge, this is the first report to demonstrate possible transmission of S. argenteus from food handlers to utensils in food-processing environments.
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Affiliation(s)
- Yuki Wakabayashi
- Bacteriology Section, Division of Microbiology, Osaka Institute of Public Health, 1-3-3 Nakamichi, Higashinari-ku, Osaka, 537-0025, Japan
- Graduate School of Veterinary Science, Department of Veterinary Science, Osaka Metropolitan University, 1-58 Rinku Ourai Kita, Izumisano, Osaka, 598-0048, Japan
| | - Yuko Kumeda
- Research Center of Microorganism Control, Organization for Research Promotion, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-kyu, Sakai, Osaka, 599-8231, Japan
| | - Shizue Yoshihara
- Graduate School of Science, Department of Biology, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8231, Japan
| | - Hayato Tokumoto
- Graduate School of Science, Department of Biology, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8231, Japan
| | - Kentaro Kawatsu
- Bacteriology Section, Division of Microbiology, Osaka Institute of Public Health, 1-3-3 Nakamichi, Higashinari-ku, Osaka, 537-0025, Japan
| | - Masami Miyake
- Graduate School of Veterinary Science, Department of Veterinary Science, Osaka Metropolitan University, 1-58 Rinku Ourai Kita, Izumisano, Osaka, 598-0048, Japan
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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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Genetic Characteristics of Methicillin-Resistant Staphylococcus argenteus Isolates Collected in the Dutch National MRSA Surveillance from 2008 to 2021. Microbiol Spectr 2022; 10:e0103522. [PMID: 36005448 PMCID: PMC9603934 DOI: 10.1128/spectrum.01035-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Staphylococcus argenteus is a recently described member of the Staphylococcus aureus complex (SAC) and is associated with human disease. The frequency and intensity of infections caused by S. argenteus are similar to those of Staphylococcus aureus. S. argenteus can harbor antibiotic resistance genes and a variety of virulence factors analogous to methicillin-resistant S. aureus (MRSA). The aim of our study was to analyze a collection of isolates in the Dutch national MRSA surveillance from January 2008 until March 2021 that were nontypeable by multilocus variable-number tandem-repeat analysis (MLVA). Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-ToF MS) was used for identifying the S. argenteus isolates, and whole-genome sequencing and SeqSphere were used to generate an in-house whole-genome multilocus sequence typing (wgMLST) scheme for typing the isolates. Furthermore, the presence of antibiotic resistance genes, replicons, and virulence genes was determined. Of 52,467 isolates submitted as MRSA from January 2008 until March 2021, 64 isolates (0.12%) were nontypeable with MLVA, and 54 of them were identified with mass spectrometry (MALDI-ToF MS) as S. argenteus. It appeared in retrospect that the first methicillin-resistant S. argenteus (MRSArg) was already submitted in 2008. An in-house-developed S. argenteus wgMLST scheme revealed that S. argenteus isolates clustered in 5 genomic groups which were characterized by distinct MLST types, resistomes, plasmid replicon families, and virulence factors. All but one isolate carried the staphylococcal chromosomal cassette mec (SCCmec) type IV harboring the methicillin resistance gene mecA and represent MRSArg. Most of the isolates with SCCmec subtype IVc(2B) had a trimethoprim resistance gene, dfrG, and harbored a blaZ-carrying plasmid, and most MRSArg isolates have the immune-modulating genes scn and sak. Nine of the 47 isolates carried enterotoxin-encoding genes seg, sei, sem, seo, and seu, which might be able to cause food poisoning. In some persons there was long-term persistence of MRSArg, and there were several genetically related MRSArg isolates in people living in close proximity, suggesting direct human-human transmission. IMPORTANCE We show that MRSArg has been circulating in the Netherlands since at least 2008. Although MRSArg is distinct from MRSA, it has a comparable population structure and carries similar resistance and virulence genes. The Dutch national MRSA surveillance has been expanded to include other methicillin-resistant members of the S. aureus complex, such as S. argenteus and Staphylococcus schweitzeri.
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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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