Evidence map›Paper›PMID 23213375›Full record

ArticleBiology open2012

Spermatogenesis arrest caused by conditional deletion of Hsp90α in adult mice.

Chiaki Kajiwara, Shiho Kondo, Shizuha Uda, Lei Dai, Tomoko Ichiyanagi, Tomoki Chiba, Satoshi Ishido, Takehiko Koji, Heiichiro Udono

Open access · goldAbstract read
In one paragraph

Article in Biology open, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
0.8field-weighted citation impact, top 29% 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

19 citing papers in PubMed, 31 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Impact of Heat Stress on Bovine Sperm Quality and Competence.Animals : an open access journal from MDPI · 2022
    Review
  10. Article
  11. Selective Inhibition of the Hsp90α Isoform.Angewandte Chemie (International ed. in English) · 2021
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Gene expression and functional analysis of Aha1a and Aha1b in stress response in zebrafish.Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology
    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 4 institutions in 1 country.

Chiaki KajiwaraLaboratories for Immunochaperones, Research Center for Allergy and Immunology (RCAI), RIKEN Yokohama Institute , Yokohama 230-0045 , Japan.
Shiho Kondo
Shizuha Uda
Lei Dai
Tomoko Ichiyanagi
Tomoki Chiba
Satoshi Ishido
Takehiko Koji
Heiichiro Udono
RIKEN Center for Integrative Medical Sciences · JPNagasaki University · JPKyushu University · JPUniversity of Tsukuba · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It is controversial whether a functional androgen receptor (AR) on germ cells, including spermatogonia, is essential for their development into sperm and, thus, initiation and maintenance of spermatogenesis. It was recently shown that many spermatocytes underwent apoptosis in the testes of Hsp90α KO mice. We had generated Hsp90α KO mice independently and confirmed this phenotype. However, the important question of whether Hsp90α is required to maintain spermatogenesis in adult mice in which testicular maturation is already completed could not be addressed using these conventional KO mice. To answer this question, we generated a tamoxifen-inducible deletion mutant of Hsp90α and found that conditional deletion of Hsp90α in adult mice caused even more severe apoptosis in germ cells beyond the pachytene stage, leading to complete arrest of spermatogenesis and testicular atrophy. Importantly, immunohistochemical analysis revealed that AR expression in WT testis was more evident in spermatogonia than in spermatocytes, whereas its expression was aberrant and ectopic in Hsp90α KO testis, raising the possibility that an AR abnormality in primordial germ cells is involved in spermatogenesis arrest in the Hsp90α KO mice. Our results suggest that the AR, specifically chaperoned by Hsp90α in spermatogonia, is critical for maintenance of established spermatogenesis and for survival of spermatocytes in adult testis, in addition to setting the first wave of spermatogenesis before puberty.

Indexed as

Androgen receptorHsp90αSpermatogenesisSpermatogonia

Identifiers

PMID23213375
PMCPMC3507171
OpenAlexW2075262826

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.