Evidence map›Paper›PMID 25796034›Full record

ArticleRedox biology2015

Advancing age increases sperm chromatin damage and impairs fertility in peroxiredoxin 6 null mice.

Burak Ozkosem, Sheldon I Feinstein, Aron B Fisher, Cristian O'Flaherty

Open access · goldAbstract read
In one paragraph

Article in Redox biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed, 1 pooled it
6.8field-weighted citation impact, top 3% 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

58 citing papers in PubMed, 1 synthesis or guideline pooled it, 103 citations in OpenAlex.

  1. Effects of aging on the male reproductive system.Journal of assisted reproduction and genetics · 2016
    Pooled it
  2. Trial
  3. Article
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  8. Review
  9. Article
  10. Review
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  12. Review
  13. Male aging in germ cells: What are we inheriting?Genetics and molecular biology · 2025
    Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Sperm chromatin structure assay (SCSABasic and clinical andrology · 2023
    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

4 authors at 2 institutions in 2 countries.

Burak OzkosemUrology Research Laboratory, Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada; Department of Surgery (Urology Division), Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada.
Sheldon I FeinsteinInstitute for Environmental Medicine, University of Pennsylvania, Philadelphia, PA, USA; Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Aron B FisherInstitute for Environmental Medicine, University of Pennsylvania, Philadelphia, PA, USA; Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Cristian O'FlahertyUrology Research Laboratory, Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada; Department of Surgery (Urology Division), Research Institute of the McGill University Health Centre, McGill University, Montréal, Québec, Canada; Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec, Canada. Electronic address: cristian.oflaherty@mcgill.ca.
McGill University Health Centre · CAUniversity of Pennsylvania · US

Funding

Translational Research Support CoreP30ES013508 · NIEHS · UNIVERSITY OF PENNSYLVANIA · PI Rebecca A Simmons · 2006 to 2026
$35.3M
CIHR 133661-1NIEHS NIH HHS P30 ES013508
6 · The paper itself

Abstract

Due to socioeconomic factors, more couples are choosing to delay conception than ever. Increasing average maternal and paternal age in developed countries over the past 40 years has raised the question of how aging affects reproductive success of males and females. Since oxidative stress in the male reproductive tract increases with age, we investigated the impact of advanced paternal age on the integrity of sperm nucleus and reproductive success of males by using a Prdx6(-/-) mouse model. We compared sperm motility, cytoplasmic droplet retention sperm chromatin quality and reproductive outcomes of young (2-month-old), adult (8-month-old), and old (20-month-old) Prdx6(-/-) males with their age-matched wild type (WT) controls. Absence of PRDX6 caused age-dependent impairment of sperm motility and sperm maturation and increased sperm DNA fragmentation and oxidation as well as decreased sperm DNA compaction and protamination. Litter size, total number of litters and total number of pups per male were significantly lower in Prdx6(-/-) males compared to WT controls. These abnormal reproductive outcomes were severely affected by age in Prdx6(-/-) males. In conclusion, the advanced paternal age affects sperm chromatin integrity and fertility more severely in the absence of PRDX6, suggesting a protective role of PRDX6 in age-associated decline in the sperm quality and fertility in mice.

Indexed as

Aging8-Hydroxy-2'-DeoxyguanosineAnimalsChromatinDeoxyguanosineDNADNA FragmentationFemaleImmunohistochemistryInfertility, MaleMaleMiceMice, Inbred C57BLMice, KnockoutOxidative StressPeroxiredoxin VI8-Hydroxy-2'-DeoxyguanosineChromatinDeoxyguanosineDNAPeroxiredoxin VIMale infertilityOxidative stressPaternal agePRDX6Reactive oxygen speciesSperm chromatin

Identifiers

PMID25796034
PMCPMC4371547
OpenAlexW1987693668

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.