Evidence map›Paper›PMID 28631083›Full record

ArticleClinical rheumatology2017

Is there a relationship between serum ox-LDL, oxidative stress, and PON1 in knee osteoarthritis?

Cemil Ertürk, Mehmet Akif Altay, Ali Bilge, Hakim Çelik

Abstract read
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In one paragraph

Article in Clinical rheumatology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 11% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 30 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

4 authors at 3 institutions in 1 country.

Cemil ErtürkKanuni Sultan Suleyman Training and Research Hospital, Department of Orthopaedic Surgery, University of Health Sciences, Turgut Ozal Street, Altinsehir/Kucukcekmece, 34303, Istanbul, Turkey. erturkc@yahoo.com.
Mehmet Akif AltayDepartment of Orthopaedic Surgery, Harran University Faculty of Medicine, Sanliurfa, Turkey.
Ali BilgeDepartment of Orthopaedic Surgery, Kafkas University Faculty of Medicine, Kars, Turkey.
Hakim ÇelikDepartment of Physiology, Harran University Faculty of Medicine, Sanliurfa, Turkey.
Harran University · TRKafkas University · TRSağlık Bilimleri Üniversitesi · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Previous in vitro studies have shown that oxidized low-density lipoprotein (ox-LDL) plays a role in the pathogenesis of osteoarthritis (OA). Paraoxonase-1 (PON1) protects both low-density lipoproteins (LDLs) and high-density lipoprotein (HDLs) against oxidative damage from circulating cells. In addition, PON1 is inactivated by ox-LDL and preserved by antioxidants. However, the relationship between serum ox-LDL, oxidative stress, and PON1 in knee OA remains unclear. Therefore, we investigated ox-LDL association with oxidative stress and PON1 in knee OA, and evaluated their relationships using radiological and clinical parameters. This study included 203 patients and 194 controls. The severity of OA was classified based on the Kellgren-Lawrence scoring system. In addition, each patient was clinically evaluated using the Western Ontario and McMaster University Osteoarthritis Index (WOMAC) score. Plasma concentrations of ox-LDL, oxidative stress markers, and PON1 were measured. Serum ox-LDL and oxidant parameters were significantly higher in patients compared to controls (p < 0.001 for all), whereas PON1 was significantly lower (p < 0.001). ox-LDL was inversely correlated with PON1, whereas it was positively correlated with radiographic severity, WOMAC score, and oxidant parameters. We found an association between the levels of various serum markers of oxidative injury, especially ox-LDL, and increasing severity of knee OA, as well as indirect evidence for their regulation by PON1. oxLDL seems to play a critical role in OA, both in the beginning, and during progression of, the disease. Therefore, serum oxLDL levels may be a helpful biomarker to evaluate the severity of knee OA.

Indexed as

AgedAryldialkylphosphataseBiomarkersCholesterolCross-Sectional StudiesDisease ProgressionFemaleHumansKnee JointLipoproteins, LDLMaleMiddle AgedOsteoarthritis, KneeOxidative StressRadiographySeverity of Illness IndexAryldialkylphosphataseBiomarkersCholesterolLipoproteins, LDLoxidized low density lipoproteinPON1 protein, humanTriglyceridesOxidative stressOx-LDLPON1Severity of knee OA

Identifiers

PMID28631083
OpenAlexW2637468963

What OpenQuestion holds

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Read underepoch 390

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.