Evidence map›Paper›PMID 21992677›Full record

ArticleJournal of inflammation (London, England)2011

Parthenolide inhibits ERK and AP-1 which are dysregulated and contribute to excessive IL-8 expression and secretion in cystic fibrosis cells.

Aicha Saadane, Jean Eastman, Melvin Berger, Tracey L Bonfield

Open access · goldAbstract read
In one paragraph

Article in Journal of inflammation (London, England), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

21 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
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  9. Molecular characterization of gene regulatory networks in primary human tracheal and bronchial epithelial cells.Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society · 2018
    Article
  10. Article
  11. Mesenchymal Stem Cell Soluble Mediators and Cystic Fibrosis.Journal of stem cell research & therapy · 2017
    Article
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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

4 authors at 1 institution in 1 country.

Aicha SaadaneDepartment of Pediatrics, Case Western Reserve University, 11100 Euclid Avenue, BRB-822 Cleveland Ohio 44106, OH 44106, USA.
Jean EastmanDepartment of Pediatrics, Case Western Reserve University, 11100 Euclid Avenue, BRB-822 Cleveland Ohio 44106, OH 44106, USA.
Melvin Berger *Department of Pediatrics, Case Western Reserve University, 11100 Euclid Avenue, BRB-822 Cleveland Ohio 44106, OH 44106, USA.
Tracey L Bonfield *Department of Pediatrics, Case Western Reserve University, 11100 Euclid Avenue, BRB-822 Cleveland Ohio 44106, OH 44106, USA.
Case Western Reserve University · US

Funding

Translational Research in Cystic FibrosisP30DK027651 · NIDDK · CASE WESTERN RESERVE UNIVERSITY · PI DRUMM, MITCHELL L · 1986 to 2014
$15.6M
NIDDK NIH HHS P30 DK027651
6 · The paper itself

Abstract

backgroundExcessive secretion of IL-8 characterizes cystic fibrosis (CF). This has been attributed to excessive activation of epithelial cell I-κB Kinase and/or NFκB. Maximum IL-8 production requires 3 cooperative mechanisms: 1) release of the promoter from repression; 2) activation of transcription by NFκB and AP-1; 3) stabilization of mRNA by p38-MAPK. Little is known about regulation of IL-8 by MAPKs or AP-1 in CF.

methodsWe studied our hypothesis in vitro using 3-cellular models. Two of these models are transformed cell lines with defective versus normal cystic fibrosis transmembrane conductance regulator (CFTR) expression: an antisense/sense transfected cell line and the patient derived IB3-1/S9. In the third series of studies, we studied primary necropsy human tracheal epithelial cells treated with an inhibitor of CFTR function. All cell lines were pretreated with parthenolide and then stimulated with TNFα and/or IL-1β.

resultsIn response to stimulation with TNFα and/or IL-1β, IL-8 production and mRNA expression was greater in CF-type cells than in non-CF controls. This was associated with enhanced phosphorylation of p38, ERK1/2 and JNK and increased activation of AP-1. Since we previously showed that parthenolide inhibits excessive IL-8 production by CF cells, we evaluated its effects on MAPK and AP-1 activation and showed that parthenolide inhibited ERK and AP-1 activation. Using a luciferase promoter assay, our studies showed that parthenolide decreased activation of the IL-8 promoter in CF cells stimulated with TNFα/IL-1β.

conclusionsIn addition to NFκB MAPKs ERK, JNK and p38 and the transcription factor AP-1 are also dysregulated in CF epithelial cells. Parthenolide inhibited both NFκB and MAPK/AP-1 pathways contributing to the inhibition of IL-8 production.

Identifiers

PMID21992677
PMCPMC3226551
OpenAlexW2167258073

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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.