Evidence map›Paper›PMID 19688109›Full record

ArticleMediators of inflammation2009

Leptin enhances synthesis of proinflammatory mediators in human osteoarthritic cartilage--mediator role of NO in leptin-induced PGE2, IL-6, and IL-8 production.

Katriina Vuolteenaho, Anna Koskinen, Meiju Kukkonen, Riina Nieminen, Unto Päivärinta, Teemu Moilanen, Eeva Moilanen

Open access · goldAbstract read
In one paragraph

Article in Mediators of inflammation, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 112 papers.

0numbers the graph read from it
0cells of the map it votes in
112citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

112 citing papers in PubMed, 230 citations in OpenAlex.

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52 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

7 authors at 4 institutions in 1 country.

Katriina VuolteenahoThe Immunopharmacology Research Group, Medical School, University of Tampere and Research Unit, Tampere University Hospital, 33014 University of Tampere, Tampere, Finland.
Anna Koskinen
Meiju Kukkonen
Riina Nieminen
Unto Päivärinta
Teemu Moilanen
Eeva Moilanen
Tampere University · FITampere University · FITampere University Hospital · FICoxa Hospital · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Obesity is an important risk factor for osteoarthritis (OA) in weight-bearing joints, but also in hand joints, pointing to an obesity-related metabolic factor that influences on the pathogenesis of OA. Leptin is an adipokine regulating energy balance, and it has recently been related also to arthritis and inflammation as a proinflammatory factor. In the present paper, the effects of leptin on human OA cartilage were studied. Leptin alone or in combination with IL-1 enhanced the expression of iNOS and COX-2, and production of NO, PGE(2), IL-6, and IL-8. The results suggest that the effects of leptin are mediated through activation of transcription factor nuclear factor kappaB (NF-kappaB) and mitogen-activated protein kinase (MAPK) pathway c-Jun NH(2)-terminal kinase (JNK). Interestingly, inhibition of leptin-induced NO production with a selective iNOS inhibitor 1400 W inhibited also the production of IL-6, IL-8, and PGE(2), and this was reversed by exogenously added NO-donor SNAP, suggesting that the effects of leptin on IL-6, IL-8, and PGE(2) production are dependent on NO. These findings support the idea of leptin as a factor enhancing the production of proinflammatory factors in OA cartilage and as an agent contributing to the obesity-associated increased risk for osteoarthritis.

Indexed as

InflammationAgedAged, 80 and overCartilageDinoprostoneHumansInterleukin-6Interleukin-8JNK Mitogen-Activated Protein KinasesLeptinMAP Kinase Signaling SystemMiddle AgedNF-kappa BNitric OxideNitric Oxide Synthase Type IIOsteoarthritisDinoprostoneInterleukin-6Interleukin-8JNK Mitogen-Activated Protein KinasesLeptinNF-kappa BNitric OxideNitric Oxide Synthase Type II

Identifiers

PMID19688109
PMCPMC2726438
OpenAlexW1966652886

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.