Evidence map›Paper›PMID 31519956›Full record

ArticleScientific reports2019

A thyroid hormone network exists in synovial fibroblasts of rheumatoid arthritis and osteoarthritis patients.

Anna-Sophia Pörings, Torsten Lowin, Bianca Dufner, Joachim Grifka, Rainer H Straub

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed, 27 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

5 authors at 1 institution in 1 country.

Anna-Sophia PöringsLaboratory of Experimental Rheumatology and Neuroendocrine Immunology, Dept. of Internal Medicine, University Hospital Regensburg, Regensburg, Germany.
Torsten LowinLaboratory of Experimental Rheumatology and Neuroendocrine Immunology, Dept. of Internal Medicine, University Hospital Regensburg, Regensburg, Germany.
Bianca DufnerLaboratory of Experimental Rheumatology and Neuroendocrine Immunology, Dept. of Internal Medicine, University Hospital Regensburg, Regensburg, Germany.
Joachim GrifkaDepartment of Orthopedic Surgery, University Hospital Regensburg, Asklepios Clinic Bad Abbach, Bad Abbach, Germany.
Rainer H StraubLaboratory of Experimental Rheumatology and Neuroendocrine Immunology, Dept. of Internal Medicine, University Hospital Regensburg, Regensburg, Germany. rainer.straub@ukr.de.ORCID http://orcid.org/0000-0003-1165-4555
University Hospital Regensburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

While patients with rheumatoid arthritis (RA) sometimes demonstrate thyroidal illness, the role of thyroid hormones in inflamed synovial tissue is unknown. This is relevant because thyroid hormones stimulate immunity, and local cells can regulate thyroid hormone levels by deiodinases (DIO). The study followed the hypothesis that elements of a thyroid hormone network exist in synovial tissue. In 12 patients with RA and 32 with osteoarthritis (OA), we used serum, synovial fluid, synovial tissue, and synovial fibroblasts (SF) in order to characterize the local thyroid hormone network using ELISAs, immunohistochemistry, imaging methods, tissue superfusion studies, cell-based ELISAs, flow cytometry, and whole genome expression profiling. Serum/synovial fluid thyroid hormone levels were similar in RA and OA (inclusion criteria: no thyroidal illness). The degradation product termed reverse triiodothyronine (reverse T3) was much lower in serum compared to synovial fluid indicating biodegradation of thyroid hormones in the synovial environment. Superfusion experiments with synovial tissue also demonstrated biodegradation, particularly in RA. Cellular membrane transporters of thyroid hormones, DIOs, and thyroid hormone receptors were present in tissue and SF. Density of cells positive for degrading DIOs were higher in RA than OA. TNF increased protein expression of degrading DIOs in RASF and OASF. Gene expression studies of RASF revealed insignificant gene regulation by bioactive T3. RA and OA synovial tissue/SF show a local thyroid hormone network. Thyroid hormones undergo strong biodegradation in synovium. While bioactive T3 does not influence SF gene expression, SF seem to have a relay function for thyroid hormones.

Indexed as

Gene Expression RegulationAgedArthritis, RheumatoidFemaleFibroblastsHumansMaleMiddle AgedOsteoarthritisSynovial MembraneThyroid HormonesThyroid Hormones

Identifiers

PMID31519956
PMCPMC6744488
OpenAlexW2972846114

What OpenQuestion holds

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LicenceCC BY
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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.