Evidence map›Paper›PMID 22811689›Full record

ArticleNephron extra2012

DNA hypermethylation and inflammatory markers in incident Japanese dialysis patients.

Sawako Kato, Bengt Lindholm, Peter Stenvinkel, Tomas J Ekström, Karin Luttropp, Yukio Yuzawa, Yoshinari Yasuda, Yoshinari Tsuruta, Shoichi Maruyama

Open access · goldAbstract read
In one paragraph

Article in Nephron extra, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

13 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Sex-specific epigenetic programming in renal fibrosis and inflammation.American journal of physiology. Renal physiology · 2023
    Review
  6. Article
  7. Are Alterations in DNA Methylation Related to CKD Development?International journal of molecular sciences · 2022
    Review
  8. Epigenetics in kidney diseases.Advances in clinical chemistry · 2021
    Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. 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 5 institutions in 3 countries.

Sawako KatoDepartment of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Bengt Lindholm
Peter Stenvinkel
Tomas J Ekström
Karin Luttropp
Yukio Yuzawa
Yoshinari Yasuda
Yoshinari Tsuruta
Shoichi Maruyama
Nagoya University · JPBaxter (United States) · USKarolinska Institutet · SEFujita Health University · JPOsaka Nishi Clinic · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

aimsInflammation is an established mortality risk factor in chronic kidney disease (CKD) patients. Although a previous report showed that uremic Caucasian patients with inflammation had signs of global DNA hypermethylation, it is still unknown whether DNA hypermethylation is linked to inflammatory markers including a marker of bacterial infections in Japanese CKD patients.

methodsIn 44 consecutive incident dialysis patients (26 males, mean age 59 ± 12 years) without clinical signs of infection, global DNA methylation was evaluated in peripheral blood DNA using the HpaII/MspI ratio by the luminometric methylation assay method. A lower ratio of HpaII/MspI indicates global DNA hypermethylation. Procalcitonin (PCT), a marker of inflammation due to bacterial infections, was measured using an immunochromatographic assay.

resultsThe patients were divided into hyper- and hypomethylation groups based on the median value of the HpaII/MspI ratio 0.31 (range 0.29-0.37). Whereas patients in the hypermethylation group had higher ferritin levels [133.0 (51.5-247.3) vs. 59.5 (40.0-119.0) ng/ml; p = 0.046], there were no significant differences in age, gender, diabetes, smoking, anemia or serum albumin levels. However, the HpaII/MspI ratio showed significant negative correlations with PCT (ρ = -0.32, p = 0.035) and ferritin (ρ = -0.33, p = 0.027) in Spearman's rank test. In a multiple linear regression analysis, PCT and ferritin were associated with a lower HpaII/MspI ratio (R(2) = 0.24, p = 0.013).

conclusionIn this study, global DNA hypermethylation was associated with ferritin and, most likely, PCT, suggesting that inflammation induced by subclinical bacterial infection promoted DNA methylation.

Indexed as

Chronic kidney diseaseDNA methylationFerritinInfectionInflammationProcalcitonin

Identifiers

PMID22811689
PMCPMC3398825
OpenAlexW2036310250

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LicenceCC BY-NC-ND
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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.