Evidence map›Paper›PMID 20661660›Full record

Trial reportBiological trace element research2011

The effect of selenium supplementation in the prevention of DNA damage in white blood cells of hemodialyzed patients: a pilot study.

Bronislaw A Zachara, Jolanta Gromadzinska, Jadwiga Palus, Zbigniew Zbrog, Rafal Swiech, Ewa Twardowska, Wojciech Wasowicz

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Biological trace element research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
2.6field-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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 60 citations in OpenAlex.

  1. Pooled it
  2. Antioxidants for adults with chronic kidney disease.The Cochrane database of systematic reviews · 2023
    Pooled it
  3. Article
  4. Review
  5. Article
  6. Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. DNA Damage in Chronic Kidney Disease: Evaluation of Clinical Biomarkers.Oxidative medicine and cellular longevity · 2016
    Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
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

7 authors at 1 institution in 1 country.

Bronislaw A ZacharaDepartment of Toxicology and Carcinogenesis, Nofer Institute of Occupational Medicine, Lodz, Poland. bronzach1@gmail.com
Jolanta Gromadzinska
Jadwiga Palus
Zbigniew Zbrog
Rafal Swiech
Ewa Twardowska
Wojciech Wasowicz
Nofer Institute of Occupational Medicine · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Patients with chronic kidney disease (CKD) have an increased incidence of cancer. It is well known that long periods of hemodialysis (HD) treatment are linked to DNA damage due to oxidative stress. In this study, we examined the effect of selenium (Se) supplementation to CKD patients on HD on the prevention of oxidative DNA damage in white blood cells. Blood samples were drawn from 42 CKD patients on HD (at the beginning of the study and after 1 and 3 months) and from 30 healthy controls. Twenty-two patients were supplemented with 200 μg Se (as Se-rich yeast) per day and 20 with placebo (baker's yeast) for 3 months. Se concentration in plasma and DNA damage in white blood cells expressed as the tail moment, including single-strand breaks (SSB) and oxidative bases lesion in DNA, using formamidopyrimidine glycosylase (FPG), were measured. Se concentration in patients was significantly lower than in healthy subjects (P < 0.0001) and increased significantly after 3 months of Se supplementation (P < 0.0001). Tail moment (SSB) in patients before the study was three times higher than in healthy subjects (P < 0.01). After 3 months of Se supplementation, it decreased significantly (P < 0.01) and was about 16% lower than in healthy subjects. The oxidative bases lesion in DNA (tail moment, FPG) of HD patients at the beginning of the study was significantly higher (P < 0.01) compared with controls, and 3 months after Se supplementation it was 2.6 times lower than in controls (P < 0.01). No changes in tail moment was observed in the placebo group. In conclusion, our study shows that in CKD patients on HD, DNA damage in white blood cells is higher than in healthy controls, and Se supplementation prevents the damage of DNA.

Indexed as

AdultAgedDNA DamageFemaleHumansKidney Failure, ChronicLeukocytesMaleMiddle AgedOxidative StressRenal DialysisSeleniumSelenium

Identifiers

PMID20661660
PMCPMC3152706
OpenAlexW1985963839

What OpenQuestion holds

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LicenceCC BY-NC
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.