Evidence map›Paper›PMID 29945585›Full record

ArticleBMC musculoskeletal disorders2018

Vascular endothelial growth factor expression and their action in the synovial membranes of patients with painful knee osteoarthritis.

Shotaro Takano, Kentaro Uchida, Gen Inoue, Toshihide Matsumoto, Jun Aikawa, Dai Iwase, Manabu Mukai, Masayuki Miyagi, Masashi Takaso

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
5.4field-weighted citation impact, top 4% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 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

9 authors at 1 institution in 1 country.

Shotaro TakanoDepartment of Orthopedic Surgery, Kitasato University School of Medicine, 1-15-1 Minami-ku Kitasato, Sagamihara City, 252-0374, Japan.
Kentaro UchidaDepartment of Orthopedic Surgery, Kitasato University School of Medicine, 1-15-1 Minami-ku Kitasato, Sagamihara City, 252-0374, Japan. kuchida@med.kitasato-u.ac.jp.ORCID http://orcid.org/0000-0001-5148-914X
Gen InoueDepartment of Orthopedic Surgery, Kitasato University School of Medicine, 1-15-1 Minami-ku Kitasato, Sagamihara City, 252-0374, Japan.
Toshihide MatsumotoDepartment of Pathology, Kitasato University School of Medicine, 1-15-1 Minami-ku Kitasato, Sagamihara City, 252-0374, Japan.
Jun AikawaDepartment of Orthopedic Surgery, Kitasato University School of Medicine, 1-15-1 Minami-ku Kitasato, Sagamihara City, 252-0374, Japan.
Dai IwaseDepartment of Orthopedic Surgery, Kitasato University School of Medicine, 1-15-1 Minami-ku Kitasato, Sagamihara City, 252-0374, Japan.
Manabu MukaiDepartment of Orthopedic Surgery, Kitasato University School of Medicine, 1-15-1 Minami-ku Kitasato, Sagamihara City, 252-0374, Japan.
Masayuki MiyagiDepartment of Orthopedic Surgery, Kitasato University School of Medicine, 1-15-1 Minami-ku Kitasato, Sagamihara City, 252-0374, Japan.
Masashi TakasoDepartment of Orthopedic Surgery, Kitasato University School of Medicine, 1-15-1 Minami-ku Kitasato, Sagamihara City, 252-0374, Japan.
Kitasato University · JP

Funding

Grant of Japan Orthopaedics and Traumatology Research Foundation 373JSPS KAKENHI 18K09119
6 · The paper itself

Abstract

backgroundResearch suggests that vascular endothelial growth factor (VEGF) levels in the synovial fluid of knee osteoarthritis (KOA) patients are positively correlated with KOA severity. The relationship between synovial VEGF levels and pain in human KOA patients is not fully understood, and the role of VEGF in the pain pathway remains unclear.

methodsWe harvested synovial membrane (SM) from 102 patients with radiographic evidence of KOA (unilateral Kellgren/Lawrence [K/L] grade 2-4) during total knee arthroplasty. Patients scored their pain on a 0 to 10 cm visual analog scale (VAS). VEGF levels in the SM of KOA patients with strong/severe (VAS ≥ 6) and mild/moderate pain (VAS < 6) were compared. Correlations between VAS and VEGF mRNA expression were investigated. To investigate a possible mechanism for VEGF-induced pain, the distribution of VEGF and the neuropeptide apelin was determined by immunohistochemical analyses. To investigate the role of VEGF in regulating apelin expression, SM cells were exposed to VEGF.

resultsVEGF expression in the VAS ≥ 6 group was significantly greater than expression in the VAS < 6 group. Expression levels of VEGF were also positively correlated with VAS. VEGF-positive cells were identified in the lining of the SM. Expression of apelin mRNA and protein were significantly elevated in SM cells treated with exogenous VEGF compared to those treated with vehicle.

conclusionSynovial VEGF may be involved in pain pathways in KOA and its action may be mediated by apelin.

Indexed as

AgedAged, 80 and overBiomarkersCells, CulturedDose-Response Relationship, DrugFemaleGene ExpressionHumansMaleMiddle AgedOsteoarthritis, KneePainPain MeasurementSynovial MembraneVascular Endothelial Growth Factor ABiomarkersVascular Endothelial Growth Factor AVEGFA protein, humanNeuropeptidesOsteoarthritisPainSynovial membraneVascular endothelial growth factor

Identifiers

PMID29945585
PMCPMC6020436
OpenAlexW2810510208

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.