Evidence map›Paper›PMID 24456841›Full record

ArticleBMC biotechnology2014

Rapid and simple detection of methicillin-resistance Staphylococcus aureus by orfX loop-mediated isothermal amplification assay.

Jianyu Su, Xiaochen Liu, Hemiao Cui, Yanyan Li, Dingqiang Chen, Yanmei Li, Guangchao Yu

Open access · goldAbstract read
In one paragraph

Article in BMC biotechnology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 9% of its field
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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 45 citations in OpenAlex.

  1. Pooled it
  2. Advances in methods for rapid detection of Staphylococcus aureus and methicillin-resistant S. aureus.Analytical sciences : the international journal of the Japan Society for Analytical Chemistry · 2025
    Review
  3. Article
  4. Article
  5. Loop-mediated isothermal amplification (LAMP): a sensitive molecular tool for detection of Staphylococcus aureus in meat and dairy product.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2022
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. LAMP Method as One of the Best Candidates for Replacing with PCR Method.The Malaysian journal of medical sciences : MJMS · 2018
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Fluorescent Detection of Methicillin ResistantAvicenna journal of medical biotechnology
    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 at 5 institutions in 2 countries.

Jianyu Su
Xiaochen Liu
Hemiao Cui
Yanyan Li
Dingqiang ChenDepartment of Laboratory Medicine, First Affiliated Hospital of Guangzhou Medical College, Guangzhou 510120, China. jyksys@126.com.
Yanmei Li
Guangchao Yu
South China University of Technology · CNFirst Affiliated Hospital of Jinan University · CNGuangzhou Medical University · CNGuangzhou Women and Children Medical Center · CNUniversity of Maryland, Baltimore · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMethicillin-resistant Staphylococcus aureus (MRSA) has become one of the most prevalent pathogens responsible for nosocomial infections throughout the world. As clinical MRSA diagnosis is concerned, current diagnostic methodologies are restricted by significant drawbacks and novel methods are required for MRSA detection. This study aimed at developing a simple loop-mediated isothermal amplification (LAMP) assay targeting on orfX for the rapid detection of methicillin-resistance Staphylococcus aureus (MRSA).

resultsThe protocol was designed by targeting orfX, a highly conserved open reading frame in S. aureus. One hundred and sixteen reference strains, including 52 Gram-positive and 64 Gram-negative isolates, were included for evaluation and optimization of the orfX-LAMP assay. This assay had been further performed on 667 Staphylococcus (566 MRSA, 25 MSSA, 53 MRCNS and 23 MSCNS) strains and were comparatively validated by PCR assay using primers F3 and B3, with rapid template DNA processing, simple equipments (water bath) and direct result determination (both naked eye and under UV light) applied. The indispensability of each primer had been confirmed, and the optimal amplification was obtained under 65°C for 45 min. The 25 μl reactant was found to be the most cost-efficient volume, and the detection limit was determined to be 10 DNA copies and 10 CFU/reaction. High specificity was observed when orfX-LAMP assay was subjected to 116 reference strains. For application, 557 (98.4%, 557/566) and 519 (91.7%, 519/566) tested strains had been detected positive by LAMP and PCR assays. The detection rate, positive predictive value (PPV) and negative predictive value (NPV) of orfX-LAMP were 98.4%, 100% and 92.7% respectively.

conclusionsThe established orfX-LAMP assay had been demonstrated to be a valid and rapid detection method on MRSA.

Indexed as

Open Reading FramesDNA PrimersLimit of DetectionMethicillin-Resistant Staphylococcus aureusNucleic Acid Amplification TechniquesPolymerase Chain ReactionSensitivity and SpecificityDNA Primers

Identifiers

PMID24456841
PMCPMC3902190
OpenAlexW2030013262

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.