Evidence map›Paper›PMID 33568686›Full record

ArticleScientific reports2021

Rat in vitro spermatogenesis promoted by chemical supplementations and oxygen-tension control.

Takafumi Matsumura, Takuya Sato, Takeru Abe, Hiroyuki Sanjo, Kumiko Katagiri, Hiroshi Kimura, Teruo Fujii, Hiromitsu Tanaka, Masumi Hirabayashi, Takehiko Ogawa

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
4.8field-weighted citation impact, top 5% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Differential retinoic acid responses across testicular developmentbioRxiv : the preprint server for biology · 2025
    Article
  6. In vitro models of the male reproductive system: applications for developmental and reproductive toxicology.Toxicological sciences : an official journal of the Society of Toxicology · 2025
    Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Recent Progress of Induced Spermatogenesis In Vitro.International journal of molecular sciences · 2024
    Review
  18. Article
  19. Article
  20. 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

10 authors at 5 institutions in 1 country.

Takafumi MatsumuraLaboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa, Japan.
Takuya SatoLaboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa, Japan.
Takeru AbeLaboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa, Japan.
Hiroyuki SanjoDepartment of Urology, Yokohama City University School of Medicine, Yokohama, Kanagawa, Japan.
Kumiko KatagiriLaboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa, Japan.
Hiroshi KimuraDepartment of Mechanical Engineering, Tokai University, Hiratsuka, Kanagawa, Japan.
Teruo FujiiInstitute of Industrial Science, University of Tokyo, Bunkyo, Tokyo, Japan.
Hiromitsu TanakaFaculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Nagasaki, Japan.
Masumi HirabayashiCenter for Genetic Analysis of Behavior, National Institute for Physiological Sciences, Okazaki, Aichi, Japan.
Takehiko OgawaLaboratory of Biopharmaceutical and Regenerative Sciences, Institute of Molecular Medicine and Life Science, Yokohama City University Association of Medical Science, Yokohama, Kanagawa, Japan. ogawa@yokohama-cu.ac.jp.
Yokohama City University · JPNagasaki International University · JPNational Institute for Physiological Sciences · JPThe University of Tokyo · JPTokai University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In vitro spermatogenesis (IVS) using air-liquid interphase organ culture method is possible with mouse testis tissues. The same method, however, has been hardly applicable to animals other than mice, only producing no or limited progression of spermatogenesis. In the present study, we challenged IVS of rats with modifications of culture medium, by supplementing chemical substances, including hormones, antioxidants, and lysophospholipids. In addition, reducing oxygen tension by placing tissues in an incubator of lower oxygen concentration and/or applying silicone cover ceiling on top of the tissue were effective for improving the spermatogenic efficiency. Through these modifications of the culture condition, rat spermatogenesis up to round spermatids was maintained over 70 days in the cultured tissue. Present results demonstrated a significant progress in rat IVS, revealing conditions commonly favorable for mice and rats as well as finding rat-specific optimizations. This is an important step towards successful IVS in many animal species, including humans.

Indexed as

Organ Culture TechniquesSpermatogenesisAnimalsAnimals, Genetically ModifiedAntioxidantsCulture MediaHormonesMaleMeiosisOxygenRatsSpermatidsSpermatocytesAntioxidantsCulture MediaHormonesOxygen

Identifiers

PMID33568686
PMCPMC7875995
OpenAlexW3126728510

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.