Evidence map›Paper›PMID 25940564›Full record

ArticleArthritis & rheumatology (Hoboken, N.J.)2015

Transthyretin deposition in articular cartilage: a novel mechanism in the pathogenesis of osteoarthritis.

Yukio Akasaki, Natàlia Reixach, Tokio Matsuzaki, Oscar Alvarez-Garcia, Merissa Olmer, Yukihide Iwamoto, Joel N Buxbaum, Martin K Lotz

Open access · greenAbstract read
In one paragraph

Article in Arthritis & rheumatology (Hoboken, N.J.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 7% 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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 55 citations in OpenAlex.

  1. Pooled it
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  6. The integration of genetically-regulated transcriptomics and electronic health records highlights a pattern of medical outcomes related to increased hepaticAmyloid : the international journal of experimental and clinical investigation : the official journal of the International Society of Amyloidosis · 2022
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  7. Amyloid deposition in the glenohumeral joint: a case report.JSES reviews, reports, and techniques · 2022
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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.

Yukio AkasakiThe Scripps Research Institute, La Jolla, California.
Natàlia ReixachThe Scripps Research Institute, La Jolla, California.
Tokio MatsuzakiThe Scripps Research Institute, La Jolla, California.
Oscar Alvarez-GarciaThe Scripps Research Institute, La Jolla, California.
Merissa OlmerThe Scripps Research Institute, La Jolla, California.
Yukihide IwamotoKyushu University Graduate School of Medical Sciences, Fukuoka, Japan.
Joel N BuxbaumThe Scripps Research Institute, La Jolla, California.
Martin K LotzThe Scripps Research Institute, La Jolla, California.
Scripps Research Institute · USKyushu University · JP

Funding

TISSUE ACQUISITION, MORPHOLOGY, AND CELL CULTUREP01AG007996 · NIA · UNIVERSITY OF CALIFORNIA SAN DIEGO · PI SAH, ROBERT L · 1989 to 2016
$26.0M
Probing the cellular Mechanisms of Transthyretin CytotoxicityR01AG032285 · NIA · SCRIPPS RESEARCH INSTITUTE, THE · PI REIXACH, NATALIA · 2010 to 2014
$1.9M
NIA NIH HHS AG-007996NIA NIH HHS AG-032285NIA NIH HHS P01 AG007996NIA NIH HHS R01 AG032285
6 · The paper itself

Abstract

objectiveAmyloid deposits are prevalent in osteoarthritic (OA) joints. We undertook this study to define the dominant precursor and to determine whether the deposits affect chondrocyte functions.

methodsAmyloid deposition in human normal and OA knee cartilage was determined by Congo red staining. Transthyretin (TTR) in cartilage and synovial fluid was analyzed by immunohistochemistry and Western blotting. The effects of recombinant amyloidogenic and nonamyloidogenic TTR variants were tested in human chondrocyte cultures.

resultsNormal cartilage from young donors did not contain detectable amyloid deposits, but 7 of 12 aged normal cartilage samples (58%) and 12 of 12 OA cartilage samples (100%) had Congo red staining with green birefringence under polarized light. TTR, which is located predominantly at the cartilage surfaces, was detected in all OA cartilage samples and in a majority of aged normal cartilage samples, but not in normal cartilage samples from young donors. Chondrocytes and synoviocytes did not contain significant amounts of TTR messenger RNA. Synovial fluid TTR levels were similar in normal and OA knees. In cultured chondrocytes, only an amyloidogenic TTR variant induced cell death as well as the expression of proinflammatory cytokines and extracellular matrix-degrading enzymes. The effects of amyloidogenic TTR on gene expression were mediated in part by Toll-like receptor 4, receptor for advanced glycation end products, and p38 MAPK. TTR-induced cytotoxicity was inhibited by resveratrol, a plant polyphenol that stabilizes the native tetrameric structure of TTR.

conclusionThese findings are the first to suggest that TTR amyloid deposition contributes to cell and extracellular matrix damage in articular cartilage in human OA and that therapies designed to reduce TTR amyloid formation might be useful.

Indexed as

AdolescentAdultAgedAged, 80 and overAmyloidogenic ProteinsBlotting, WesternCartilage, ArticularCells, CulturedChondrocytesFemaleHumansImmunohistochemistryMaleMiddle AgedOsteoarthritis, Kneep38 Mitogen-Activated Protein KinasesAmyloidogenic Proteinsp38 Mitogen-Activated Protein KinasesPrealbuminReceptor for Advanced Glycation End ProductsReceptors, ImmunologicRecombinant ProteinsRNA, MessengerTLR4 protein, humanToll-Like Receptor 4

Identifiers

PMID25940564
PMCPMC4519374
OpenAlexW1596900097

What OpenQuestion holds

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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.