Evidence map›Paper›PMID 24169552›Full record

ArticleEndocrinology2013

Loss of vascular endothelial growth factor A (VEGFA) isoforms in the testes of male mice causes subfertility, reduces sperm numbers, and alters expression of genes that regulate undifferentiated spermatogonia.

Ningxia Lu, Kevin M Sargent, Debra T Clopton, William E Pohlmeier, Vanessa M Brauer, Renee M McFee, John S Weber, Napoleone Ferrara, David W Silversides, Andrea S Cupp

Open access · bronzeAbstract read
In one paragraph

Article in Endocrinology, 2013. 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
6.9field-weighted citation impact, top 4% 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, 54 citations in OpenAlex.

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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 3 institutions in 2 countries.

Ningxia LuDepartment of Animal Science, University of Nebraska-Lincoln, Lincoln, NE 68583-0908. acupp2@unl.edu.
Kevin M Sargent
Debra T Clopton
William E Pohlmeier
Vanessa M Brauer
Renee M McFee
John S Weber
Napoleone Ferrara
David W Silversides
Andrea S Cupp
Université de Montréal · CAUniversity of California, San Diego · USUniversity of Nebraska–Lincoln · US

Funding

Role of VEGF in Testis MorphogenesisR01HD051979 · NICHD · UNIVERSITY OF NEBRASKA LINCOLN · PI CUPP, ANDREA S · 2007 to 2010
$1.1M
NICHD NIH HHS HD051979NICHD NIH HHS R01 HD051979
6 · The paper itself

Abstract

Vascular endothelial growth factor A (VEGFA) isoform treatment has been demonstrated to alter spermatogonial stem cell homeostasis. Therefore, we generated pDmrt1-Cre;Vegfa(-/-) (knockout, KO) mice by crossing pDmrt1-Cre mice to floxed Vegfa mice to test whether loss of all VEGFA isoforms in Sertoli and germ cells would impair spermatogenesis. When first mated, KO males took 14 days longer to get control females pregnant (P < .02) and tended to take longer for all subsequent parturition intervals (9 days; P < .07). Heterozygous males sired fewer pups per litter (P < .03) and after the first litter took 10 days longer (P < .05) to impregnate females, suggesting a more progressive loss of fertility. Reproductive organs were collected from 6-month-old male mice. There were fewer sperm per tubule in the corpus epididymides (P < .001) and fewer ZBTB16-stained undifferentiated spermatogonia (P < .003) in the testes of KO males. Testicular mRNA abundance for Bcl2 (P < .02), Bcl2:Bax (P < .02), Neurog3 (P < .007), and Ret was greater (P = .0005), tended to be greater for Sin3a and tended to be reduced for total Foxo1 (P < .07) in KO males. Immunofluorescence for CD31 and VE-Cadherin showed no differences in testis vasculature; however, CD31-positive staining was evident in undifferentiated spermatogonia only in KO testes. Therefore, loss of VEGFA isoforms in Sertoli and germ cells alters genes necessary for long-term maintenance of undifferentiated spermatogonia, ultimately reducing sperm numbers and resulting in subfertility.

Indexed as

AnimalsFemaleGenotypeInfertility, MaleMaleMiceMice, KnockoutPregnancyProtein IsoformsSpermatogenesisSpermatogoniaTestisTranscription FactorsVascular Endothelial Growth Factor ADMRT1 proteinProtein IsoformsTranscription FactorsVascular Endothelial Growth Factor A

Identifiers

PMID24169552
PMCPMC3836063
OpenAlexW2057582738

What OpenQuestion holds

Textmetadata
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.