Evidence map›Paper›PMID 25404736›Full record

ArticleThe Journal of biological chemistry2015

Interleukin-1 receptor-associated kinase-4 (IRAK4) promotes inflammatory osteolysis by activating osteoclasts and inhibiting formation of foreign body giant cells.

Eri Katsuyama, Hiroya Miyamoto, Tami Kobayashi, Yuiko Sato, Wu Hao, Hiroya Kanagawa, Atsuhiro Fujie, Toshimi Tando, Ryuichi Watanabe, Mayu Morita and 6 more

Abstract read
In one paragraph

Article in The Journal of biological chemistry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
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

15 citing papers in PubMed.

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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

16 authors.

Eri KatsuyamaFrom the Departments of Orthopedic Surgery.
Hiroya MiyamotoFrom the Departments of Orthopedic Surgery.
Tami KobayashiFrom the Departments of Orthopedic Surgery, Integrated Bone Metabolism and Immunology.
Yuiko SatoFrom the Departments of Orthopedic Surgery, Musculoskeletal Reconstruction and Regeneration Surgery, and.
Wu HaoFrom the Departments of Orthopedic Surgery.
Hiroya KanagawaFrom the Departments of Orthopedic Surgery.
Atsuhiro FujieFrom the Departments of Orthopedic Surgery.
Toshimi TandoFrom the Departments of Orthopedic Surgery.
Ryuichi WatanabeFrom the Departments of Orthopedic Surgery.
Mayu MoritaDentistry and Oral Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo 160-8582, Japan.
Kana MiyamotoFrom the Departments of Orthopedic Surgery.
Yasuo NikiFrom the Departments of Orthopedic Surgery.
Hideo MoriokaFrom the Departments of Orthopedic Surgery.
Morio MatsumotoFrom the Departments of Orthopedic Surgery.
Yoshiaki ToyamaFrom the Departments of Orthopedic Surgery.
Takeshi MiyamotoFrom the Departments of Orthopedic Surgery, Integrated Bone Metabolism and Immunology, miyamoto@z5.keio.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Formation of foreign body giant cells (FBGCs) occurs following implantation of medical devices such as artificial joints and is implicated in implant failure associated with inflammation or microbial infection. Two major macrophage subpopulations, M1 and M2, play different roles in inflammation and wound healing, respectively. Therefore, M1/M2 polarization is crucial for the development of various inflammation-related diseases. Here, we show that FBGCs do not resorb bone but rather express M2 macrophage-like wound healing and inflammation-terminating molecules in vitro. We also found that FBGC formation was significantly inhibited by inflammatory cytokines or infection mimetics in vitro. Interleukin-1 receptor-associated kinase-4 (IRAK4) deficiency did not alter osteoclast formation in vitro, and IRAK4-deficient mice showed normal bone mineral density in vivo. However, IRAK4-deficient mice were protected from excessive osteoclastogenesis induced by IL-1β in vitro or by LPS, an infection mimetic of Gram-negative bacteria, in vivo. Furthermore, IRAK4 deficiency restored FBGC formation and expression of M2 macrophage markers inhibited by inflammatory cytokines in vitro or by LPS in vivo. Our results demonstrate that osteoclasts and FBGCs are reciprocally regulated and identify IRAK4 as a potential therapeutic target to inhibit stimulated osteoclastogenesis and rescue inhibited FBGC formation under inflammatory and infectious conditions without altering physiological bone resorption.

Indexed as

AnimalsBone ResorptionCell DifferentiationGene Expression Regulation, DevelopmentalGiant Cells, Foreign-BodyInflammationInterleukin-1 Receptor-Associated KinasesMacrophagesMiceOsteoclastsOsteolysisInterleukin-1 Receptor-Associated KinasesIrak4 protein, mouseBoneCell BiologyDifferentiationGene ExpressionOsteoclast

Identifiers

PMID25404736
PMCPMC4294496

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.