Evidence map›Paper›PMID 34050440›Full record

ArticleClinical rheumatology2021

Advanced glycation end products, advanced oxidation protein products, and ferric reducing ability of plasma in patients with rheumatoid arthritis: a focus on activity scores.

Seyed Reza Najafizadeh, Khatereh Amiri, Maryam Moghaddassi, Shaghayegh Khanmohammadi, Hossein Mirmiranpour, Manouchehr Nakhjavani

Erratum issuedAbstract read
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In one paragraph

Article in Clinical rheumatology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.3field-weighted citation impact, top 40% 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

9 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
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  7. Differential target of oxidative damage inFrontiers in medicine · 2025
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Seyed Reza NajafizadehRheumatology Research Center, Vali-Asr Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Khatereh AmiriRheumatology Research Center, Vali-Asr Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Maryam MoghaddassiRheumatology Research Center, Vali-Asr Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Shaghayegh KhanmohammadiRheumatology Research Center, Vali-Asr Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Hossein MirmiranpourDepartment of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
Manouchehr NakhjavaniEndocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, Tehran University of Medical Sciences, Tehran, Iran. nakhjavanim@tums.ac.ir.
Tehran University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRheumatoid arthritis (RA) is a prevalent inflammatory disorder causing functional disabilities. Oxidative stress can cause inflammation and can also be induced by inflammation. Measuring oxidative stress markers could help better understand the pathophysiology of RA and may be used to define the disease severity. MATERIAL AND

methodIn this case-control study, 75 RA patients were selected among those referred to the rheumatology clinic. Patients were further categorized into two groups, with active and inactive disease according to the Disease Activity Score (DAS) 28. Forty healthy volunteered persons were selected as the control group. Blood samples were obtained, and advanced glycation end products (AGEs), advanced oxidation protein products (AOPPs), and ferric reducing ability of plasma (FRAP) were measured. The results were compared via student t-test and Chi-square.

resultsMean ± SD values for AGEs, AOPP, and FRAP in cases and controls were 53.29 ± 6.82 vs. 44.43 ± 7.13 (p = 0.001), 146.08 ± 19.56 vs. 135.79 ± 14.23 (p = 0.004), and 967.13 ± 226.66 vs. 1012.87 ± 215.94 (p = 0.2), respectively. Mean ± SD values for AGEs, AOPP, and FRAP in patients with active disease and inactive disease were 53.32 ± 7.2 vs. 53.26 ± 6.48 (p = 0.9), 146.97 ± 17.56 vs. 145.06 ± 21.84 (p = 0.6), and 953.17 ± 217.09 vs. 983.09 ± 239.31 (p = 0.5), respectively.

conclusionAGEs and AOPP but not FRAP were significantly increased in RA patients compared to healthy controls. There was no significant difference between AGEs, AOPP, and FRAP in RA patients with active and inactive disease. Key points • AGEs and AOPP but not FRAP were significantly increased in RA patients compared to healthy controls. • There was no significant difference between AGEs, AOPP, and FRAP in RA patients with active and inactive disease.

Indexed as

Advanced Oxidation Protein ProductsArthritis, RheumatoidBiomarkersCase-Control StudiesGlycation End Products, AdvancedHumansOxidation-ReductionOxidative StressAdvanced Oxidation Protein ProductsBiomarkersGlycation End Products, AdvancedAdvanced glycation end productsAdvanced oxidation protein productsFerric reducing ability of plasmaOxidative stressRheumatoid arthritis

Identifiers

PMID34050440
OpenAlexW3164978826

What OpenQuestion holds

Textmetadata
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.