Evidence map›Paper›PMID 24286116›Full record

Trial reportArthritis research & therapy2013

Comparative evaluation of the effects of treatment with tocilizumab and TNF-α inhibitors on serum hepcidin, anemia response and disease activity in rheumatoid arthritis patients.

Soken-Nakazawa J Song, Mitsuhiro Iwahashi, Naohisa Tomosugi, Kazuko Uno, Jiro Yamana, Seizou Yamana, Tomoyasu Isobe, Hiroki Ito, Hiroshi Kawabata, Kazuyuki Yoshizaki

Open access · goldAbstract readClinical TrialComparative Study
In one paragraph

Trial report in Arthritis research & therapy, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 2 pooled it
5.4field-weighted citation impact, top 3% 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

60 citing papers in PubMed, 2 syntheses or guidelines pooled it, 142 citations in OpenAlex.

  1. Pooled it
  2. Serum Levels of IL-6 and TNF-α May Correlate with Activity and Severity of Rheumatoid Arthritis.Medical science monitor : international medical journal of experimental and clinical research · 2015
    Pooled it
  3. Trial
  4. Anti-TNF-α effects on anemia in rheumatoid and psoriatic arthritis.International journal of immunopathology and pharmacology · 2017
    Trial
  5. Review
  6. Review
  7. Article
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  12. Article
  13. Observational
  14. Article
  15. Article
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  17. Observational
  18. Article
  19. Article
  20. The role of iron metabolism in chronic diseases related to obesity.Molecular medicine (Cambridge, Mass.) · 2022
    Review
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

10 authors at 5 institutions in 1 country.

Soken-Nakazawa J Song
Mitsuhiro Iwahashi
Naohisa Tomosugi
Kazuko Uno
Jiro Yamana
Seizou Yamana
Tomoyasu Isobe
Hiroki Ito
Hiroshi Kawabata
Kazuyuki Yoshizaki
Osaka University · JPHigashihiroshima Medical Center · JPKanazawa Medical University · JPKyoto University · JPLouis Pasteur Center for Medical Research · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionAnemia of inflammation (AI) is a common complication of rheumatoid arthritis (RA) and has a negative impact on RA symptoms and quality of life. Upregulation of hepcidin by inflammatory cytokines has been implicated in AI. In this study, we evaluated and compared the effects of IL-6 and TNF-α blocking therapies on anemia, disease activity, and iron-related parameters including serum hepcidin in RA patients.

methodsPatients (n = 93) were treated with an anti-IL-6 receptor antibody (tocilizumab) or TNF-α inhibitors for 16 weeks. Major disease activity indicators and iron-related parameters including serum hepcidin-25 were monitored before and 2, 4, 8, and 16 weeks after the initiation of treatment. Effects of tocilizumab and infliximab (anti-TNF-α antibody) on cytokine-induced hepcidin expression in hepatoma cells were analyzed by quantitative real-time PCR.

resultsAnemia at base line was present in 66% of patients. Baseline serum hepcidin-25 levels were correlated positively with serum ferritin, C-reactive protein (CRP), vascular endothelial growth factor (VEGF) levels and Disease Activity Score 28 (DAS28). Significant improvements in anemia and disease activity, and reductions in serum hepcidin-25 levels were observed within 2 weeks in both groups, and these effects were more pronounced in the tocilizumab group than in the TNF-α inhibitors group. Serum hepcidin-25 reduction by the TNF-α inhibitor therapy was accompanied by a decrease in serum IL-6, suggesting that the effect of TNF-α on the induction of hepcidin-25 was indirect. In in vitro experiments, stimulation with the cytokine combination of IL-6+TNF-α induced weaker hepcidin expression than did with IL-6 alone, and this induction was completely suppressed by tocilizumab but not by infliximab.

conclusionsHepcidin-mediated iron metabolism may contribute to the pathogenesis of RA-related anemia. In our cohort, tocilizumab was more effective than TNF-α inhibitors for improving anemia and normalizing iron metabolism in RA patients by inhibiting hepcidin production.

Indexed as

AdultAgedAnemiaAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntirheumatic AgentsArthritis, RheumatoidCell Line, TumorC-Reactive ProteinFemaleFerritinsGene ExpressionHepcidinsHumansInfliximabInterleukin-6Antibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntirheumatic AgentsC-Reactive ProteinFerritinshepcidin 25, humanHepcidinsInfliximabInterleukin-6tocilizumabTumor Necrosis Factor-alphaVascular Endothelial Growth Factor A

Identifiers

PMID24286116
PMCPMC3978580
OpenAlexW2163447382

What OpenQuestion holds

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LicenceCC BY
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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.