Detection of Staphylococcal Cassette Chromosome mec Type XI Carrying Highly Divergent mecA, mecI, mecR1, blaZ, and ccr Genes in Human Clinical Isolates of Clonal Complex 130 Methicillin-Resistant Staphylococcus aureus
Anna C. Shore,E.C. Deasy,Peter Slickers,Gráinne I. Brennan,Brian O'Connell,Stefan Monecke,Ralf Ehricht,David C. Coleman +7 more
TLDR
Two clonal complex 130 methicillin-resistant Staphylococcus aureus isolates from patients in Irish hospitals were identified that were phenotypically PBP 2a positive but lacked mecA by conventional PCR and by DNA microarray screening, suggesting they may have originated in another taxon.Abstract:
Methicillin resistance in staphylococci is mediated by penicillin binding protein 2a (PBP 2a), encoded by mecA on mobile staphylococcal cassette chromosome mec (SCCmec) elements. In this study, two clonal complex 130 (CC130) methicillin-resistant Staphylococcus aureus (MRSA) isolates from patients in Irish hospitals were identified that were phenotypically PBP 2a positive but lacked mecA by conventional PCR and by DNA microarray screening. The isolates were identified as methicillin-susceptible S. aureus using the GeneXpert real-time PCR assay. Whole-genome sequencing of one isolate (M10/0061) revealed a 30-kb SCCmec element encoding a class E mec complex with highly divergent blaZ-mecA-mecR1-mecI, a type 8 cassette chromosome recombinase (ccr) complex consisting of ccrA1-ccrB3, an arsenic resistance operon, and flanking direct repeats (DRs). The SCCmec element was almost identical to that of SCCmec type XI (SCCmec XI) identified by the Sanger Institute in sequence type 425 bovine MRSA strain LGA251 listed on the website of the International Working Group on the Classification of Staphylococcal Cassette Chromosome Elements. The open reading frames (ORFs) identified within SCCmec XI of M10/0061 exhibited 21 to 93% amino acid identity to ORFs in GenBank. A third DR was identified ca. 3 kb downstream of SCCmec XI, indicating the presence of a possible SCC remnant. SCCmec XI was also identified in the second CC130 MRSA isolate by PCR and sequencing. The CC130 MRSA isolates may be of animal origin as previously reported CC130 S. aureus strains were predominantly from bovine sources. The highly divergent nature of SCCmec XI relative to other SCCmec elements indicates that it may have originated in another taxon.read more
Citations
More filters
Book ChapterDOI
DNA Microarray-Based Detection and Identification of Fungal Specimens
TL;DR: Although the use of microarray technologies in clinical diagnostics is still rare, the microarray-based approaches are believed to have great clinical potential in the field of infectious diseases.
DissertationDOI
Estudo epidemiológico molecular de Staphylococcus aureus resistentes à meticilina (MRSA) isolados no Brasil e estudo da proteína reguladora de resposta GraR
Book ChapterDOI
Advanced Methods for Screening and Identification of Methicillin-Resistant Staphylococcus aureus
Raymond Widen,Yi-Wei Tang +1 more
TL;DR: The utility and performance of currently available advanced techniques for rapid and accurate screening and identification of MRSA, especially on evolving rapid nucleic acid amplification-based methods are focused on.
Journal ArticleDOI
Mechanism and challenges associated with adaptation and evolution of drug-resistant bacteria: an overview
TL;DR: The present scenario of antimicrobial resistance and the alternatives to overcome this global issue in future are shown.
Journal ArticleDOI
A New Epidemiological Tool for Staphylococcus aureus Surveillance
TL;DR: The Defined Substrate Utilization (DSU) format provides an epidemiological series of specific screening formulations that obviate these limitations of either agar culture followed by identification, or genetic amplification.
References
More filters
Journal ArticleDOI
Basic Local Alignment Search Tool
TL;DR: A new approach to rapid sequence comparison, basic local alignment search tool (BLAST), directly approximates alignments that optimize a measure of local similarity, the maximal segment pair (MSP) score.
Performance standards for antimicrobial susceptibility testing
TL;DR: The supplemental information presented in this document is intended for use with the antimicrobial susceptibility testing procedures published in the following Clinical and Laboratory Standards Institute (CLSI)–approved standards.
Journal ArticleDOI
EMBOSS: The European Molecular Biology Open Software Suite
TL;DR: The European Molecular Biology Open Software Suite is a mature package of software tools developed for the molecular biology community that includes a comprehensive set of applications for molecular sequence analysis and other tasks and integrates popular third-party software packages under a consistent interface.
Journal ArticleDOI
Prodigal: prokaryotic gene recognition and translation initiation site identification
Doug Hyatt,Doug Hyatt,Gwo Liang Chen,Philip F. LoCascio,Miriam Land,Frank W. Larimer,Frank W. Larimer,Loren Hauser +7 more
TL;DR: This work developed a new gene prediction algorithm called Prodigal (PROkaryotic DYnamic programming Gene-finding ALgorithm), which achieved good results compared to existing methods, and it is believed it will be a valuable asset to automated microbial annotation pipelines.
Journal ArticleDOI
Artemis: sequence visualization and annotation.
Kim Rutherford,Julian Parkhill,James Crook,Terry Horsnell,Peter M. Rice,Marie-Adèle Rajandream,Bart Barrell +6 more
TL;DR: Artemis is a DNA sequence visualization and annotation tool that allows the results of any analysis or sets of analyses to be viewed in the context of the sequence and its six-frame translation.
Related Papers (5)
Meticillin-resistant Staphylococcus aureus with a novel mecA homologue in human and bovine populations in the UK and Denmark: a descriptive study.
Laura García-Álvarez,Matthew T. G. Holden,Heather Lindsay,Cerian R. Webb,Derek F. J. Brown,Martin D. Curran,Enid Walpole,Karen Brooks,Derek Pickard,Christopher Teale,Julian Parkhill,Stephen D. Bentley,Giles Edwards,E Kirsty Girvan,Angela M. Kearns,Bruno Pichon,Robert Hill,Anders Rhod Larsen,Robert Skov,Sharon J. Peacock,Duncan J. Maskell,Mark A. Holmes +21 more
Classification of staphylococcal cassette chromosome mec (SCCmec) : guidelines for reporting novel SCCmec elements.
Teruyo Ito,Keiichi Hiramatsu,D. Oliviera,H. de Lencastre,Kunyan Zhang,Henrik Westh,Frances G. O'Brien,Philip M. Giffard,David C. Coleman,Fred C. Tenover,Susan Boyle-Vavra,Robert Skov,Mark C. Enright,Barry N. Kreiswirth,Kwan Soo Ko,Hajo Grundmann,Frédéric Laurent,Johanna U. Ericson Sollid,Angela M. Kearns,Angela M. Kearns,Richard V. Goering,Joseph F. John,Robert S. Daum,Bo Söderquist +23 more
A field guide to pandemic, epidemic and sporadic clones of methicillin-resistant Staphylococcus aureus
Stefan Monecke,Geoffrey W. Coombs,Anna C. Shore,David C. Coleman,Patrick Eberechi Akpaka,Michael Borg,Henry Chow,Margaret Ip,Lutz Jatzwauk,Daniel Jonas,Kristina Kadlec,Angela M. Kearns,Frédéric Laurent,Frances G. O'Brien,Julie C. Pearson,Antje Ruppelt,Stefan Schwarz,E. Scicluna,Peter Slickers,Hui-Leen Tan,Stefan Weber,Ralf Ehricht +21 more