Evidence map›Paper›PMID 19893612›Full record

ArticlePLoS genetics2009

OAZ-t/OAZ3 is essential for rigid connection of sperm tails to heads in mouse.

Keizo Tokuhiro, Ayako Isotani, Sadaki Yokota, Yoshihisa Yano, Shigeru Oshio, Mika Hirose, Morimasa Wada, Kyoko Fujita, Yukiko Ogawa, Masaru Okabe and 2 more

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
1.1field-weighted citation impact, top 24% 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

55 citing papers in PubMed, 126 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Article
  6. Mechanisms of Development of Sperm Defects.Advances in anatomy, embryology, and cell biology · 2025
    Review
  7. The Ultrastructure and Composition of Bovine Spermatozoa.Advances in anatomy, embryology, and cell biology · 2025
    Review
  8. Article
  9. Article
  10. Article
  11. Identification of protein candidates in spermatozoa of water buffalo (Frontiers in cell and developmental biology · 2023
    Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

12 authors at 4 institutions in 1 country.

Keizo TokuhiroTANAKA Project, Center for Advanced Science and Innovation, Osaka University, Suita, Osaka, Japan.
Ayako Isotani
Sadaki Yokota
Yoshihisa Yano
Shigeru Oshio
Mika Hirose
Morimasa Wada
Kyoko Fujita
Yukiko Ogawa
Masaru Okabe
Yoshitake Nishimune
Hiromitsu Tanaka
Nagasaki International University · JPOsaka University · JPKyoto University of Advanced Science · JPOhu University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Polyamines are known to play important roles in the proliferation and differentiation of many types of cells. Although considerable amounts of polyamines are synthesized and stored in the testes, their roles remain unknown. Ornithine decarboxylase antizymes (OAZs) control the intracellular concentration of polyamines in a feedback manner. OAZ1 and OAZ2 are expressed ubiquitously, whereas OAZ-t/OAZ3 is expressed specifically in germline cells during spermiogenesis. OAZ-t reportedly binds to ornithine decarboxylase (ODC) and inactivates ODC activity. In a prior study, polyamines were capable of inducing a frameshift at the frameshift sequence of OAZ-t mRNA, resulting in the translation of OAZ-t. To investigate the physiological role of OAZ-t, we generated OAZ-t-disrupted mutant mice. Homozygous OAZ-t mutant males were infertile, although the polyamine concentrations of epididymides and testes were normal in these mice, and females were fertile. Sperm were successfully recovered from the epididymides of the mutant mice, but the heads and tails of the sperm cells were easily separated in culture medium during incubation. Results indicated that OAZ-t is essential for the formation of a rigid junction between the head and tail during spermatogenesis. The detached tails and heads were alive, and most of the headless tails showed straight forward movement. Although the tailless sperm failed to acrosome-react, the heads were capable of fertilizing eggs via intracytoplasmic sperm injection. OAZ-t likely plays a key role in haploid germ cell differentiation via the local concentration of polyamines.

Indexed as

AnimalsCarrier ProteinsCell DifferentiationFemaleInfertility, MaleIntracellular Signaling Peptides and ProteinsMaleMiceMice, KnockoutMicroscopy, ElectronSpermatozoaSperm TailTestisCarrier ProteinsIntracellular Signaling Peptides and ProteinsOaz3 protein, mouse

Identifiers

PMID19893612
PMCPMC2763286
OpenAlexW2013639515

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.