Evidence map›Paper›PMID 14680510›Full record

ArticleArthritis research & therapy2003

Quantitative biomarker analysis of synovial gene expression by real-time PCR.

David L Boyle, Sanna Rosengren, William Bugbee, Arthur Kavanaugh, Gary S Firestein

Open access · goldAbstract readEvaluation StudyValidation Study
In one paragraph

Article in Arthritis research & therapy, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 1 pooled it
4.8field-weighted citation impact, top 5% 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

74 citing papers in PubMed, 1 synthesis or guideline pooled it, 132 citations in OpenAlex.

  1. Pooled it
  2. Toreforant, an orally active histamine HInflammation research : official journal of the European Histamine Research Society ... [et al.] · 2019
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  20. Clinical Applications of Synovial Biopsy.Frontiers in medicine · 2019
    Review

14 more citing papers are in PubMed but not listed here.

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

5 authors at 1 institution in 1 country.

David L BoyleCenter for Innovative Therapy, Division of Rheumatology, Allergy and Immunology, UCSD School of Medicine, La Jolla, California, USA. dboyle@ucsd.edu
Sanna Rosengren
William Bugbee
Arthur Kavanaugh
Gary S Firestein
University of California, San Diego · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Synovial biomarker analysis in rheumatoid arthritis can be used to evaluate drug effect in clinical trials of novel therapeutic agents. Previous studies of synovial gene expression for these studies have mainly relied on histological methods including immunohistochemistry and in situ hybridization. To increase the reliability of mRNA measurements on small synovial tissue samples, we developed and validated real time quantitative PCR (Q-PCR) methods on biopsy specimens. RNA was isolated from synovial tissue and cDNA was prepared. Cell-based standards were prepared from mitogen-stimulated peripheral blood mononuclear cells. Real time PCR was performed using TaqMan chemistry to quantify gene expression relative to the cell-based standard. Application of the cellular standard curve method markedly reduced intra- and inter-assay variability and corrected amplification efficiency errors compared with the C(t) method. The inter-assay coefficient of variation was less than 25% over time. Q-PCR methods were validated by demonstrating increased expression of IL-1beta and IL-6 expression in rheumatoid arthritis synovial samples compared with osteoarthritis synovium. Based on determinations of sampling error and coefficient of variation, twofold differences in gene expression in serial biopsies can be detected by assaying approximately six synovial tissue biopsies from 8 to 10 patients. These data indicate that Q-PCR is a reliable method for determining relative gene expression in small synovial tissue specimens. The technique can potentially be used in serial biopsy studies to provide insights into mechanism of action and therapeutic effect of new anti-inflammatory agents.

Indexed as

Anti-Inflammatory AgentsArthritis, RheumatoidBiomarkersBiopsyCalibrationComputer SystemsDNA, ComplementaryDrug Evaluation, PreclinicalGene Expression ProfilingHumansOsteoarthritisPolymerase Chain ReactionProtein BiosynthesisProteinsReference StandardsReproducibility of ResultsAnti-Inflammatory AgentsBiomarkersDNA, ComplementaryProteinsRNA, Messenger

Identifiers

PMID14680510
PMCPMC333415
OpenAlexW2106580462

What OpenQuestion holds

Textmetadata
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.