Evidence map›Paper›PMID 19481682›Full record

ReviewMolecular and cellular endocrinology2009

Male infertility caused by spermiogenic defects: lessons from gene knockouts.

Wei Yan

Abstract readReview
In one paragraph

Review in Molecular and cellular endocrinology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed
14.0field-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

106 citing papers in PubMed, 193 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Adverse Effects of Nicotine on Human Sperm Nuclear Proteins.The world journal of men's health · 2025
    Review
  6. TEX38 localizes ZDHHC19 to the plasma membrane and regulates sperm head morphogenesis in mice.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. CaAnimal cells and systems · 2024
    Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

46 more citing papers are in PubMed but not listed here.

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

1 author at 1 institution in 1 country.

Wei YanDepartment of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA. wyan@medicine.nevada.edu
University of Nevada, Reno · US

Funding

KLHL 10-mediated uniquitination during spermiogenesisR01HD050281 · NICHD · UNIVERSITY OF NEVADA RENO · PI YAN, WEI · 2006 to 2010
$1.4M
Small RNA profiling during spermatogenesisR03HD048855 · NICHD · UNIVERSITY OF NEVADA RENO · PI YAN, WEI · 2005 to 2006
$143k
NICHD NIH HHS HD048855NICHD NIH HHS HD050281NICHD NIH HHS R01 HD050281NICHD NIH HHS R03 HD048855
6 · The paper itself

Abstract

Spermiogenesis refers to the process by which postmeiotic spermatids differentiate into elongated spermatids and eventually spermatozoa. During spermiogenesis, round spermatids undergo dynamic morphologic changes, which include nuclear condensation and elongation, formation of flagella and acrosome, reorganization of organelles and elimination of cytoplasm upon spermiation. This cellular differentiation process is unique to male haploid germ cells, which may explain why approximately half of the testis-specific genes are exclusively expressed in spermiogenesis. The spermiogenesis-specific expression implies that these genes contribute to either structural or functional aspects of future sperm. Many such genes have been inactivated in mice and some of these gene knockout mice display male infertility due to nonfunctional sperm which display no or various degrees of structural abnormalities. Since the majority of these spermiogenesis-specific genes are highly conserved between mice and humans, findings from knockout mouse studies may be applicable to human infertility. Here, I briefly review some of these spermatid-specific gene knockouts. The mouse studies strongly suggest that sperm quality rather than quantity is a better indicator of male fertility and novel assays should be developed to determine sperm functionality.

Indexed as

Gene Knockout TechniquesSpermatogenesisAnimalsInfertility, MaleMaleMiceModels, AnimalOrgan SpecificitySpermatozoa

Identifiers

PMID19481682
PMCPMC5438260
OpenAlexW2070319253

What OpenQuestion holds

Textmetadata
LicenceTDM
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.