Evidence map›Paper›PMID 38177279›Full record

ArticleCommunications biology2024

Multiple ageing effects on testicular/epididymal germ cells lead to decreased male fertility in mice.

Tsutomu Endo, Kiyonori Kobayashi, Takafumi Matsumura, Chihiro Emori, Manabu Ozawa, Shimpei Kawamoto, Daisuke Okuzaki, Keisuke Shimada, Haruhiko Miyata, Kentaro Shimada and 5 more

Open access · goldAbstract read
In one paragraph

Article in Communications biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
19.9field-weighted citation impact, top 1% 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

22 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Silicon-Based Agent Attenuates Age-Related Spermatogenesis Disorder.International journal of urology : official journal of the Japanese Urological Association · 2025
    Article
  9. Review
  10. Germ cells and the aging niche: a systems approach to reproductive longevity.Journal of assisted reproduction and genetics · 2025
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Epididymal-Born circRNA Cargo and Its Implications in Male Fertility.International journal of molecular sciences · 2025
    Review
  17. Review
  18. Article
  19. Defects in the H3t Gene Cause an Increase in Leydig Cells With Impaired Spermatogenesis in Mice.Genes to cells : devoted to molecular & cellular mechanisms · 2025
    Article
  20. Male aging in germ cells: What are we inheriting?Genetics and molecular biology · 2025
    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

15 authors at 6 institutions in 1 country.

Tsutomu EndoImmunology Frontier Research Center, Osaka University, Osaka, Japan. atendo@g.ecc.u-tokyo.ac.jp.
Kiyonori KobayashiResearch Institute for Microbial Diseases, Osaka University, Osaka, Japan.
Takafumi MatsumuraResearch Institute for Microbial Diseases, Osaka University, Osaka, Japan.
Chihiro EmoriResearch Institute for Microbial Diseases, Osaka University, Osaka, Japan.ORCID 0000-0001-8040-2517
Manabu OzawaThe Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
Shimpei KawamotoResearch Institute for Microbial Diseases, Osaka University, Osaka, Japan.ORCID 0000-0002-7033-671X
Daisuke OkuzakiResearch Institute for Microbial Diseases, Osaka University, Osaka, Japan.ORCID 0000-0002-4552-783X
Keisuke ShimadaResearch Institute for Microbial Diseases, Osaka University, Osaka, Japan.ORCID 0000-0003-3739-7163
Haruhiko MiyataResearch Institute for Microbial Diseases, Osaka University, Osaka, Japan.ORCID 0000-0003-4758-5803
Kentaro ShimadaResearch Institute for Microbial Diseases, Osaka University, Osaka, Japan.
Mayo KodaniResearch Institute for Microbial Diseases, Osaka University, Osaka, Japan.
Yu Ishikawa-YamauchiThe Institute of Medical Science, The University of Tokyo, Tokyo, Japan.ORCID 0009-0006-2438-619X
Daisuke MotookaResearch Institute for Microbial Diseases, Osaka University, Osaka, Japan.
Eiji HaraImmunology Frontier Research Center, Osaka University, Osaka, Japan.ORCID 0000-0001-7821-3960
Masahito IkawaImmunology Frontier Research Center, Osaka University, Osaka, Japan. ikawa@biken.osaka-u.ac.jp.ORCID 0000-0001-9859-6217
The University of Osaka · JPOsaka University of Pharmaceutical Sciences · JPThe University of Tokyo · JPUbe Frontier University · JPCentral Institute for Experimental Animals · JPOsaka University of Economics · JP

Funding

MEXT | Japan Society for the Promotion of Science (JSPS) JP19K06439MEXT | Japan Society for the Promotion of Science (JSPS) JP23K05587
6 · The paper itself

Abstract

In mammals, females undergo reproductive cessation with age, whereas male fertility gradually declines but persists almost throughout life. However, the detailed effects of ageing on germ cells during and after spermatogenesis, in the testis and epididymis, respectively, remain unclear. Here we comprehensively examined the in vivo male fertility and the overall organization of the testis and epididymis with age, focusing on spermatogenesis, and sperm function and fertility, in mice. We first found that in vivo male fertility decreased with age, which is independent of mating behaviors and testosterone levels. Second, overall sperm production in aged testes was decreased; about 20% of seminiferous tubules showed abnormalities such as germ cell depletion, sperm release failure, and perturbed germ cell associations, and the remaining 80% of tubules contained lower number of germ cells because of decreased proliferation of spermatogonia. Further, the spermatozoa in aged epididymides exhibited decreased total cell numbers, abnormal morphology/structure, decreased motility, and DNA damage, resulting in low fertilizing and developmental rates. We conclude that these multiple ageing effects on germ cells lead to decreased in vivo male fertility. Our present findings are useful to better understand the basic mechanism behind the ageing effect on male fertility in mammals including humans.

Indexed as

EpididymisTestisAgingAnimalsFertilityMaleMammalsMiceSemenSpermatogonia

Identifiers

PMID38177279
PMCPMC10766604
OpenAlexW4390581797

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.