Evidence map›Paper›PMID 26996575›Full record

ArticleYonsei medical journal2016

The Relationship between HIF-2α and VEGF with Radiographic Severity in the Primary Osteoarthritic Knee.

Zhou Jian-lin, Fang Hong-song, Peng Hao, Deng Shuang, Chen Shen, Li Jian-ping, Qiu Bo, Weng Jin-qing, Liu Feng

Open access · goldAbstract read
In one paragraph

Article in Yonsei medical journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 28% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Intra-articular etanercept attenuates pain and hypoxia from TMJ loading in the rat.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2020
    Article
  7. Article
  8. Effect of rapamycin on endometriosis in mice.Experimental and therapeutic medicine · 2016
    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

9 authors at 2 institutions in 1 country.

Zhou Jian-linDepartment of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China. zhoujianlin2005@sina.com.
Fang Hong-songDepartment of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China.
Peng HaoDepartment of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China.
Deng ShuangDepartment of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China.
Chen ShenDepartment of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China.
Li Jian-pingDepartment of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China.
Qiu BoDepartment of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China.
Weng Jin-qingDepartment of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China.
Liu FengDepartment of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China.
Wuhan University · CNRenmin Hospital of Wuhan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this study was to determine the relationship of hypoxia-inducible factor-2 (HIF-2α) and vascular endothelial growth factor (VEGF) with radiographic severity in primary osteoarthritis (OA) of the knee. Expression of these two factors in cartilage samples from OA knee joints was examined at mRNA and protein levels. MATERIALS AND

methodsKnee joints were examined using plain radiographs, and OA severity was assessed using the Kellgren and Lawrence (KL) grading system. Specimens were collected from 29 patients (31 knees) who underwent total knee replacement because of severe medial OA of the knee (KL grades 3 and 4), 16 patients who underwent knee arthroscopy (KL grade 2), and 5 patients with traumatic knees (KL grade 0). HIF-2α and VEGF expression was quantified by real-time polymerase chain reaction and western blotting.

resultsCartilage degeneration correlated with the radiographic severity grade. OA severity, determined using the Mankin scale, correlated positively with the KL grade (r=0.8790, p<0.01), and HIF-2α and VEGF levels with the radiographic severity of knee OA (r=0.7001, p<0.05; r=0.6647, p<0.05).

conclusionIn OA cartilage, HIF-2α and VEGF mRNA and protein levels were significantly and positively correlated. The expression of both factors correlated positively with the KL grade. HIF-2α and VEGF, therefore, may serve as biochemical markers as well as potential therapeutic targets in knee OA.

Indexed as

AdultAgedArthroplasty, Replacement, KneeArthroscopyBasic Helix-Loop-Helix ProteinsBiomarkersCartilageEndothelial PAS Domain-Containing Protein 1FemaleHumansKnee JointMaleMiddle AgedOsteoarthritis, KneeRadiographyReal-Time Polymerase Chain ReactionBasic Helix-Loop-Helix ProteinsBiomarkersEndothelial PAS Domain-Containing Protein 1RNA, MessengerVascular Endothelial Growth Factor Acartilage degenerationHIF-2αKL gradeVEGF

Identifiers

PMID26996575
PMCPMC4800365
OpenAlexW2300447974

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.