Evidence map›Paper›PMID 34549304›Full record

ArticleMolecular medicine reports2021

Interleukin‑Iβ promotes cartilage degeneration by regulating forkhead box protein O4 and type Ⅱ collagen.

Jianxiong Wu, Hongjun Zhang, Rulin Deng, Lifeng Xing, Mingwu Hu, Xiaoling Fu

Open access · hybridAbstract read
In one paragraph

Article in Molecular medicine reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.9field-weighted citation impact, top 26% 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

5 citing papers in PubMed, 8 citations in OpenAlex.

  1. Article
  2. Forkhead box O proteins in chondrocyte aging and diseases.Journal of orthopaedic translation · 2025
    Review
  3. Review
  4. Article
  5. Article
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

6 authors at 4 institutions in 1 country.

Jianxiong Wu *Department of Emergency Medicine, Sir Run Run Shaw Hospital, Affiliated with The Zhejiang University School of Medicine, Hangzhou, Zhejiang 310085, P.R. China.
Hongjun Zhang *Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China.
Rulin DengDepartment of Orthopedics, Nanchang Hongdu Hospital of Traditional Chinese Medicine, Nanchang, Jiangxi 330038, P.R. China.
Lifeng XingDepartment of Emergency Medicine, Sir Run Run Shaw Hospital, Affiliated with The Zhejiang University School of Medicine, Hangzhou, Zhejiang 310085, P.R. China.
Mingwu HuDepartment of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China.
Xiaoling FuDepartment of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China.
Nanchang University · CNSecond Affiliated Hospital of Nanchang University · CNSir Run Run Shaw Hospital · CNZhejiang University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Osteoarthritis (OA) is one of the most prevalent pain‑inducing and disabling diseases globally. Aging is a primary contributing factor to the progression of OA. Forkhead box protein O4 (FOXO4) is known to be involved in the cell cycle and apoptosis regulation. The aim of the present study was to investigate the association between FOXO4 expression and chondrocyte degeneration in rats. Chondrocytes were assigned to the control (4‑week‑old rats), natural degeneration (16‑week‑old rats) or induced degeneration (IL‑1β‑treated chondrocytes from 4‑week‑old rats) groups. Immunocytochemical analysis with β‑galactosidase staining revealed a greater number of stained cells present in the natural and induced degeneration groups than in the control group. PCR analysis indicated lower mRNA expression levels of collagen type II α1 chain (Col2α) and higher levels of FOXO4, and western blotting revealed reduced Col2α protein expression levels and significantly elevated FOXO4 levels in the natural and induced degeneration groups, compared with those in the control group. The results of the present study revealed that FOXO4 expression was altered in the natural and induced degeneration groups, and further research and exploration are needed to clarify the underlying mechanism.

Indexed as

Gene Expression RegulationAnimalsBiomarkersCartilage, ArticularCells, CulturedChondrocytesCollagen Type IIDisease SusceptibilityForkhead Transcription FactorsInterleukin-1betaMaleOsteoarthritisRatsRNA, MessengerBiomarkersCollagen Type IIForkhead Transcription FactorsFOXO4 protein, ratIL1B protein, ratInterleukin-1betaRNA, Messengerchondrocytescollagen type IIdegeneration modelforkhead box protein O4osteoarthritis

Identifiers

PMID34549304
PMCPMC8477174
OpenAlexW3199949757

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.