Evidence map›Paper›PMID 25994092›Full record

ArticleRheumatology international2015

Evaluation of prolidase activity and oxidative status in patients with knee osteoarthritis: relationships with radiographic severity and clinical parameters.

Mehmet Akif Altay, Cemil Ertürk, Ali Bilge, Metin Yaptı, Ali Levent, Nurten Aksoy

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Article in Rheumatology international, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
2.0field-weighted citation impact, top 12% 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

45 citing papers in PubMed, 82 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

6 authors at 1 institution in 1 country.

Mehmet Akif AltayDepartment of Orthopaedics and Traumatology, Harran University School of Medicine, 63300, Sanliurfa, Turkey. maltay63@yahoo.com.
Cemil ErtürkDepartment of Orthopaedics and Traumatology, Harran University School of Medicine, 63300, Sanliurfa, Turkey.
Ali BilgeDepartment of Orthopaedics and Traumatology, Harran University School of Medicine, 63300, Sanliurfa, Turkey.
Metin YaptıDepartment of Orthopaedics and Traumatology, Harran University School of Medicine, 63300, Sanliurfa, Turkey.
Ali LeventDepartment of Orthopaedics and Traumatology, Harran University School of Medicine, 63300, Sanliurfa, Turkey.
Nurten AksoyDepartment of Clinical Biochemistry, Harran University School of Medicine, 63300, Sanliurfa, Turkey.
Harran University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We investigated serum prolidase activity and oxidative/antioxidative status in patients with knee osteoarthritis (OA) and evaluated its relationships with radiographic severity and clinical parameters. The study population consisted of 137 patients with knee OA and 134 healthy volunteers. The severity of knee OA was classified according to the Kellgren-Lawrence criteria. Each patient was also evaluated clinically according to the Western Ontario and McMaster University Osteoarthritis Index (WOMAC). Serum prolidase activity was measured spectrophotometrically. Oxidative status was assessed by measuring serum lipid hydroperoxide (LOOH) and total oxidative status (TOS). Antioxidative status was assessed by measuring serum-free sulfhydryl groups (-SH = total thiol) and total antioxidant capacity (TAC). Oxidative stress index (OSI) was calculated. Serum prolidase activity was significantly lower in the knee OA group than in the control group (p < 0.001). The serum prolidase activities decreased with the severity of knee OA. Furthermore, serum LOOH, TOS, and OSI levels of the knee OA group were significantly higher than those of the controls (p < 0.001 for all), whereas TAC and -SH levels did not differ between the two groups (p > 0.05). In a multiple regression analysis, WOMAC score was independently associated with serum prolidase activity (β = -0.340, p < 0.001). Decreased serum prolidase activity and elevated LOOH, TOS, and OSI levels may be associated with knee OA, and serum prolidase activity may be a useful adjunctive indicator of the progression of knee OA in follow-up.

Indexed as

AdultAgedCase-Control StudiesDipeptidasesDisease ProgressionFemaleHumansKnee JointLipid PeroxidesMaleMiddle AgedOsteoarthritis, KneeOxidative StressRadiographySeverity of Illness IndexDipeptidasesLipid Peroxidesproline dipeptidaseKnee osteoarthritisOxidative statusProlidaseWOMAC scoreX-ray grading

Identifiers

PMID25994092
OpenAlexW331298004

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Registered trials

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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.