scholarly journals Improved Detection of Staphylococcus intermedius Group in a Routine Diagnostic Laboratory

2014 ◽  
Vol 53 (3) ◽  
pp. 961-963 ◽  
Author(s):  
John Lee ◽  
Aimee Murray ◽  
Richard Bendall ◽  
William Gaze ◽  
Lihong Zhang ◽  
...  
Keyword(s):  
Routine Laboratory ◽  
Simple Scheme ◽  
Diagnostic Laboratory ◽  
Laboratory Methods ◽  
Staphylococcus Pseudintermedius ◽  
Content Type ◽  
Dog Bites ◽  
Zoonotic Pathogens ◽  
Staphylococcus Intermedius

TheStaphylococcus intermediusgroup (SIG) includes zoonotic pathogens traditionally associated with dog bites. We describe a simple scheme for improved detection of SIG using routine laboratory methods, report its effect on isolation rates, and use sequencing to confirm that, apart from one atypical SIG strain, most isolates areStaphylococcus pseudintermedius.

scholarly journals Genomic and Surface Proteomic Analysis of the Canine Pathogen Staphylococcus pseudintermedius Reveals Proteins That Mediate Adherence to the Extracellular Matrix

2011 ◽  
Vol 79 (8) ◽  
pp. 3074-3086 ◽  
Author(s):  
Jeanette Bannoehr ◽  
Nouri L. Ben Zakour ◽  
Mark Reglinski ◽  
Neil F. Inglis ◽  
Sabitha Prabhakaran ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Bioinformatic Analysis ◽  
Major Constituent ◽  
Staphylococcus Pseudintermedius ◽  
Content Type ◽  
Host Tropism ◽  
Staphylococcus Intermedius ◽  
Proteomic Approach ◽  
Novel Host

ABSTRACTCell wall-associated (CWA) proteins made by Gram-positive pathogens play a fundamental role in pathogenesis.Staphylococcus pseudintermediusis a major animal pathogen responsible for the canine skin disease bacterial pyoderma. Here, we describe the bioinformatic analysis of the family of 18 predicted CWA proteins encoded in the genome ofS. pseudintermediusstrain ED99 and determine their distribution among a phylogenetically diverse panel ofS. pseudintermediusclinical isolates and closely related species of theStaphylococcus intermediusgroup. In parallel, we employed a proteomic approach to identify proteins presented on the surface of strain ED99in vitro, revealing a total of 60 surface-localized proteins in one or more phases of growth, including 6 of the 18 genome-predicted CWA proteins. Based on these analyses, we selected two CWA proteins (SpsD and SpsL) encoded by all strains examined and investigated their capacity to mediate adherence to extracellular matrix proteins. We discovered that SpsD and SpsL mediated binding of a heterologous host,Lactococcus lactis, to fibrinogen and fibronectin and that SpsD mediated binding to cytokeratin 10, a major constituent of mammalian skin. Of note, the interaction with fibrinogen was host-species dependent, suggestive of a role for SpsD and SpsL in the host tropism ofS. pseudintermedius. Finally, we identified IgG specific for SpsD and SpsL in sera from dogs with bacterial pyoderma, implying that both proteins are expressed during infection. The combined genomic and proteomic approach employed in the current study has revealed novel host-pathogen interactions which represent candidate therapeutic targets for the control of bacterial pyoderma.

scholarly journals In VitroAntimicrobial Susceptibility of Staphylococcus pseudintermedius Isolates of Human and Animal Origin: TABLE 1

2016 ◽  
Vol 54 (5) ◽  
pp. 1391-1394 ◽  
Author(s):  
Romney M. Humphries ◽  
Max T. Wu ◽  
Lars F. Westblade ◽  
Amy E. Robertson ◽  
Carey-Ann D. Burnham ◽  
...  
Keyword(s):  
Animal Origin ◽  
Staphylococcus Pseudintermedius ◽  
Methicillin Resistant ◽  
Content Type ◽  
Staphylococcus Intermedius

MIC results for 115Staphylococcus intermediusgroup isolates are presented. Of these, 33% were methicillin resistant, among which 51.4% were susceptible to doxycycline, 29.7% to clindamycin, and 21.6% to trimethoprim-sulfamethoxazole. All of the isolates were susceptible to ceftaroline, daptomycin, linezolid, nitrofurantoin, quinupristin-dalfopristin, rifampin, tigecycline, and vancomycin. Of all the isolates, 82.6%, 67.8%, and 23.5% were susceptible to ciprofloxacin, erythromycin, and penicillin, respectively. No isolates harboredmupAorqacA/Bgenes, which suggested a lack of resistance to mupirocin or chlorhexidine.

scholarly journals Performance of Five Commercial Identification Platforms for Identification of Staphylococcus delphini

2019 ◽  
Vol 57 (11) ◽  
Author(s):  
Matthew C. Canver ◽  
Tsigereda Tekle ◽  
Samantha T. Compton ◽  
Katrina Callan ◽  
Eileen M. Burd ◽  
...  
Keyword(s):  
Distinct Species ◽  
Human Infection ◽  
Species Level ◽  
Accurate Identification ◽  
Content Type ◽  
Maldi Tof Ms ◽  
Maldi Tof ◽  
Staphylococcus Intermedius ◽  
Animal Pathogens ◽  
Tof Ms

ABSTRACT The Staphylococcus intermedius group (SIG) is a collection of coagulase-positive staphylococci consisting of four distinct species, namely, Staphylococcus cornubiensis, Staphylococcus delphini, Staphylococcus intermedius, and Staphylococcus pseudintermedius. SIG members are animal pathogens and rare causes of human infection. Accurate identification of S. pseudintermedius has important implications for interpretation of antimicrobial susceptibility testing data and may be important for other members of the group. Therefore, we sought to evaluate the performance of five commercially available identification platforms with 21 S. delphini isolates obtained from a variety of animal and geographic sources. Here, we show that automated biochemical platforms were unable to identify S. delphini to the species level, a function of its omission from their databases, but could identify isolates to the SIG level with various degrees of success. However, all automated systems misidentified at least one isolate as Staphylococcus aureus. One matrix-assisted laser desorption ionization–time of flight mass spectrometry (MALDI-TOF MS) system was able to identify S. delphini to the species level, suggesting that MALDI-TOF MS is the best option for distinguishing members of the SIG. With the exception of S. pseudintermedius, it is unclear if other SIG members should be routinely identified to the species level; however, as our understanding of their role in animal and human diseases increases, it may be necessary and important to do so.

scholarly journals Draft Genome Sequences of 12 Clinical and Environmental Methicillin-Resistant Staphylococcus pseudintermedius Strains Isolated from a Veterinary Teaching Hospital in Washington State

2018 ◽  
Vol 6 (15) ◽  
pp. e00290-18
Author(s):  
Devendra H. Shah ◽  
Lisa P. Jones ◽  
Narayan Paul ◽  
Margaret A. Davis
Keyword(s):  
Teaching Hospital ◽  
Draft Genome ◽  
Multidrug Resistant ◽  
Washington State ◽  
Nosocomial Transmission ◽  
Whole Genome ◽  
Genome Sequences ◽  
Staphylococcus Pseudintermedius ◽  
Methicillin Resistant ◽  
Content Type

ABSTRACT Methicillin-resistant Staphylococcus pseudintermedius (MRSP) is a globally emergent multidrug-resistant pathogen of dogs associated with nosocomial transmission in dogs and with potential zoonotic impacts. Here, we report the draft whole-genome sequences of 12 hospital-associated MRSP strains and their resistance genotypes and phenotypes.

scholarly journals Resistance Mechanisms, Epidemiology, and Approaches to Screening for Vancomycin-Resistant Enterococcus in the Health Care Setting

2016 ◽  
Vol 54 (10) ◽  
pp. 2436-2447 ◽  
Author(s):  
Matthew L. Faron ◽  
Nathan A. Ledeboer ◽  
Blake W. Buchan
Keyword(s):  
Health Care ◽  
Infection Control ◽  
Control Strategies ◽  
Resistance Mechanisms ◽  
Clinical Microbiology Laboratory ◽  
Laboratory Methods ◽  
Content Type ◽  
Important Health ◽  
Vancomycin Resistant ◽  
Hospital Acquired

Infections attributable to vancomycin-resistantEnterococcus(VRE) strains have become increasingly prevalent over the past decade. Prompt identification of colonized patients combined with effective multifaceted infection control practices can reduce the transmission of VRE and aid in the prevention of hospital-acquired infections (HAIs). Increasingly, the clinical microbiology laboratory is being asked to support infection control efforts through the early identification of potential patient or environmental reservoirs. This review discusses the factors that contribute to the rise of VRE as an important health care-associated pathogen, the utility of laboratory screening and various infection control strategies, and the available laboratory methods to identify VRE in clinical specimens.

scholarly journals Identification, Cloning, and Characterization ofStaphylococcus pseudintermediusCoagulase

2018 ◽  
Vol 86 (8) ◽  
Author(s):  
Alaa H. Sewid ◽  
M. Nabil Hassan ◽  
A. M. Ammar ◽  
David A. Bemis ◽  
Stephen A. Kania
Keyword(s):  
Staphylococcus Aureus ◽  
Recombinant Protein ◽  
Immune Evasion ◽  
Complement C3 ◽  
Fibrin Deposition ◽  
Staphylococcus Pseudintermedius ◽  
Content Type ◽  
Chromogenic Assay ◽  
Prothrombin Activation ◽  
Multifunctional Properties

ABSTRACTCoagulase activation of prothrombin by staphylococcus induces the formation of fibrin deposition that facilitates the establishment of infection byStaphylococcusspecies. Coagulase activity is a key characteristic ofStaphylococcus pseudintermedius; however, no coagulase gene or associated protein has been studied to characterize this activity. We report a recombinant protein sharing 40% similarity toStaphylococcus aureuscoagulase produced from a putativeS. pseudintermediuscoagulase gene. Prothrombin activation by the protein was measured with a chromogenic assay using thrombin tripeptide substrate. Stronger interaction with bovine prothrombin than with human prothrombin was observed. TheS. pseudintermediuscoagulase protein also bound complement C3 and immunoglobulin. Recombinant coagulase facilitated the escape ofS. pseudintermediusfrom phagocytosis, presumably by forming a bridge between opsonizing antibody, complement, and fibrinogen. Evidence from this work suggests thatS. pseudintermediuscoagulase has multifunctional properties that contribute to immune evasion that likely plays an important role in virulence.

scholarly journals Hybrid Assembly from a Pathogenic Methicillin- and Multidrug-Resistant Staphylococcus pseudintermedius Strain Isolated from a Case of Canine Otitis in Spain

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Joaquim Viñes ◽  
Anna Cuscó ◽  
Olga Francino
Keyword(s):  
Antimicrobial Resistance ◽  
Genome Assembly ◽  
Hybrid Approach ◽  
Multidrug Resistant ◽  
Nanopore Sequencing ◽  
Hybrid Assembly ◽  
Staphylococcus Pseudintermedius ◽  
Content Type ◽  
Antimicrobial Resistance Profile ◽  
Disk Diffusion Testing

Here we report the genome assembly, using a hybrid approach with Illumina and Nanopore sequencing, of a pathogenic Staphylococcus pseudintermedius strain isolated from a case of canine otitis. Genome assembly confirmed the antimicrobial resistance profile (disk diffusion testing) with specific genes and mutations.

scholarly journals Routine laboratory surveillance of antimicrobial resistance in community-acquired urinary tract infections adequately informs prescribing policy in England

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Vicky Watts ◽  
Benjamin Brown ◽  
Maria Ahmed ◽  
André Charlett ◽  
Carolyn Chew-Graham ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Antimicrobial Resistance ◽  
Urinary Tract Infections ◽  
Laboratory Data ◽  
Routine Data ◽  
Sentinel Surveillance ◽  
Routine Laboratory ◽  
Diagnostic Laboratory ◽  
E Coli ◽  
Tract Infections

Abstract Objectives To assess whether resistance estimates obtained from sentinel surveillance for antimicrobial resistance (AMR) in community-acquired urinary tract infections (UTIs) differ from routinely collected laboratory community UTI data. Methods All patients aged ≥18 years presenting to four sentinel general practices with a suspected UTI, from 13 November 2017 to 12 February 2018, were asked to provide urine specimens for culture and susceptibility. Specimens were processed at the local diagnostic laboratory. Antibiotic susceptibility testing was conducted using automated methods. We calculated the proportion of Escherichia coli isolates that were non-susceptible (according to contemporaneous EUCAST guidelines) to trimethoprim, nitrofurantoin, cefalexin, ciprofloxacin and amoxicillin/clavulanic acid, overall and by age group and sex, and compared this with routine estimates. Results Sentinel practices submitted 740 eligible specimens. The specimen submission rate had increased by 28 specimens per 1000 population per year (95% CI 21–35). Uropathogens were isolated from 23% (169/740) of specimens; 67% were E. coli (113/169). Non-susceptibility of E. coli to trimethoprim was 28.2% (95% CI 20.2–37.7) on sentinel surveillance (33.4%; 95% CI 29.5–37.6 on routine data) and to nitrofurantoin was 0.9% (95% CI 0–5.7) (1.5%; 95% CI 0.7–3.0 on routine data). Conclusions Routine laboratory data resulted in a small overestimation in resistance (although the difference was not statistically significant) and our findings suggest that it provides an adequate estimate of non-susceptibility to key antimicrobials in community-acquired UTIs in England. This study does not support the need for ongoing local sentinel surveillance.

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