Evidence map›Paper›PMID 17324259›Full record

ArticleBMC molecular biology2007

Selection of reliable reference genes for qPCR studies on chondroprotective action.

Stefan Toegel, Wenwen Huang, Claudia Piana, Frank M Unger, Michael Wirth, Mary B Goldring, Franz Gabor, Helmut Viernstein

Open access · hybridAbstract read
In one paragraph

Article in BMC molecular biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

27 citing papers in PubMed, 64 citations in OpenAlex.

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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

8 authors at 2 institutions in 2 countries.

Stefan ToegelDepartment of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria. stefan.toegel@univie.ac.at
Wenwen Huang
Claudia Piana
Frank M Unger
Michael Wirth
Mary B Goldring
Franz Gabor
Helmut Viernstein
University of Vienna · ATHarvard University · US

Funding

Role of ESE1 Regulation of Type II Collagen in CartilageR01AG022021 · NIA · HOSPITAL FOR SPECIAL SURGERY · PI GOLDRING, MARY B · 2002 to 2014
$3.4M
ESE 1 a novel transcriptional regulator of cartilage remodelingR56AG022021 · NIA · HOSPITAL FOR SPECIAL SURGERY · PI GOLDRING, MARY B · 2009 to 2009
$438k
NIA NIH HHS AG-22021NIA NIH HHS R01 AG022021NIA NIH HHS R56 AG022021
6 · The paper itself

Abstract

backgroundChondroprotective agents (CPA) such as glucosamine, curcumin and diacerein represent potential remedies for the management of osteoarthritis and several studies have been performed on their effects in-vitro and in-vivo. For the investigation of chondroprotective action on chondrocyte gene expression, quantitative real-time RT-PCR is the method of choice. However, validation of applied normalization strategies represents a crucial and sometimes neglected step in the analysis process. Therefore, the present study aimed to determine the expression stability of common reference genes (ACTB, Beta actin; GAPDH, Glyceraldehyde-3-phosphate; B2M, Beta-2-microglobulin; HPRT1, Hypoxanthine phosphoribosyl-transferase I; SDHA, Succinate dehydrogenase complex, subunit A; YWHAZ, Tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein, zeta polypeptide) under the influence of glucosamine, curcumin and diacerein in the IL-1beta-stimulated C-28/I2 chondrocyte model, using the geNorm software tool.

resultsCPA treatment of C-28/I2 chondrocytes significantly affected the expression level of many reference genes (p < 0.05). According to their expression stability, geNorm analysis revealed rankings of the 3 most stable genes (from most stable to least stable) as follows: GAPDH, B2M and SDHA in glucosamine treated samples and HPRT1, GAPDH and B2M in curcumin or diacerein treated samples. Interestingly, ACTB was one of the most variably expressed genes throughout all experiments.

conclusionOur study points out the problem of relying on commonly used reference genes without an accurate validation process. For normalization purposes in gene profiling studies on glucosamine action, the genes GAPDH, B2M and SDHA are recommended as single reference genes depending on the expression level of the target gene or more favourably in combination. For experiments with curcumin and diacerein the use of HPRT1, GAPDH and B2M should be considered.

Indexed as

ChondrocytesAnimalsAnthraquinonesCurcuminGene Expression ProfilingGene Expression RegulationGlucosamineHumansPolymerase Chain ReactionProtective AgentsReference StandardsAnthraquinonesCurcumindiacereinGlucosamineProtective Agents

Identifiers

PMID17324259
PMCPMC1820791
OpenAlexW2074154368

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.