Evidence map›Paper›PMID 29848377›Full record

ArticleBMC research notes2018

Some coagulase negative Staphylococcus spp. isolated from buffalo can be misidentified as Staphylococcus aureus by phenotypic and Sa442 PCR methods.

Camila C de Almeida, Lucas J L Pizauro, Glenn A Soltes, Durda Slavic, Fernando A de Ávila, João M Pizauro, Janet I MacInnes

Abstract read
In one paragraph

Article in BMC research notes, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Exposure of Buffalo Milkers to Pathogenic Bacteria and Characterization of Isolated Methicillin-ResistantInternational journal of environmental research and public health · 2022
    Article
  5. Molecular Mechanism ofInfection and drug resistance · 2022
    Article
  6. Article
  7. Article
  8. Complete Genome Sequences of 11Microbiology resource announcements · 2019
    Article
  9. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Camila C de AlmeidaAgriculture and Livestock Microbiology Graduation Program, Department of Veterinary Pathology, São Paulo State University (Unesp), School of Agricultural and Veterinarian Sciences, Jaboticabal, Brazil.
Lucas J L PizauroDepartment of Veterinary Preventive Medicine and Animal Reproduction, São Paulo State University (Unesp), School of Agricultural and Veterinarian Sciences, Jaboticabal, Brazil.
Glenn A SoltesDepartment of Pathobiology, University of Guelph, 50 Stone Rd. East, Guelph, ON, N1G 2W1, Canada.
Durda SlavicAnimal Health Laboratory, University of Guelph, Post Office 3612, Guelph, ON, N1H 6R8, Canada.
Fernando A de ÁvilaDepartment of Veterinary Preventive Medicine and Animal Reproduction, São Paulo State University (Unesp), School of Agricultural and Veterinarian Sciences, Jaboticabal, Brazil.
João M PizauroDepartment of Technology, São Paulo State University (Unesp), School of Agricultural and Veterinarian Sciences, Jaboticabal, Brazil.
Janet I MacInnesDepartment of Pathobiology, University of Guelph, 50 Stone Rd. East, Guelph, ON, N1G 2W1, Canada. macinnes@uoguelph.ca.ORCID http://orcid.org/0000-0002-1454-539X

Funding

070404 070404
6 · The paper itself

Abstract

objectiveStaphylococcus aureus is a commonly reported cause of buffalo mastitis. However, its prevalence may be overestimated. The aim of this study was to compare S. aureus identification by conventional phenotypic and genotypic assays versus Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry (MALDI-TOF MS) and novel real-time quantitative PCR tests for the cytochrome oxidase subunit D II (cydB) and staphylocoagulase (coa) genes.

resultsFrom 408 samples obtained from buffalo milk/milking environment, 32 putative S. aureus strains were identified based on characteristic growth on Baird Parker agar, positive catalase reaction, ability to clot rabbit plasma, and positive Sa442 PCR assay. However, in further testing, only 10 of these strains were positive in latex agglutination tests and by MALDI-TOF MS, only eight of the 32 strains were S. aureus while the rest were S. chromogenes (19), S. agnetis (3), S. cohnii (1), or S. xylosus (1). All eight strains identified as S. aureus by MALDI-TOF analysis and confirmed by 16S RNA gene sequencing were positive in a S. aureus-specific cydB PCR test. As well, 7/8 S. aureus strains were PCR positive in a real-time coa PCR test as were 2/69 S. chromogenes and the lone S. xylosus strain tested.

Indexed as

AnimalsBrazilBuffaloesCoagulaseFemaleMastitisMilkReal-Time Polymerase Chain ReactionSequence Analysis, RNASpecies SpecificitySpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationStaphylococcusStaphylococcus aureusCoagulasecydB PCRMastitisSpecies-specific PCR testsStaphylococcus aureus

Identifiers

PMID29848377
PMCPMC5977496

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.