Evidence map›Paper›PMID 21040553›Full record

ArticleReproductive biology and endocrinology : RB&E2010

Mammalian oocytes are targets for prostaglandin E2 (PGE2) action.

Diane M Duffy, Lynda K McGinnis, Catherine A Vandevoort, Lane K Christenson

Open access · goldAbstract readComparative Study
In one paragraph

Article in Reproductive biology and endocrinology : RB&E, 2010. 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
2.7field-weighted citation impact, top 10% 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, 44 citations in OpenAlex.

  1. Article
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  4. Identification of Sex-Related Genes from the Three-Spot Swimming CrabAnimals : an open access journal from MDPI · 2021
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  7. A Metabolomic Overview of Follicular Fluid in Cows.Frontiers in veterinary science · 2018
    Article
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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

4 authors at 3 institutions in 1 country.

Diane M DuffyDepartment of Physiological Sciences, Eastern Virginia Medical School, Norfolk, VA 23507, USA.
Lynda K McGinnis
Catherine A Vandevoort
Lane K Christenson
University of Kansas Medical Center · USEastern Virginia Medical School · USUniversity of California, Davis · US

Funding

ZONA PELLUCIDA PEPTIDES AS IMMUNOCONTRACEPTIVE ANTIGENSP51RR000169 · NCRR · UNIVERSITY OF CALIFORNIA DAVIS · PI HYDE, DALLAS MELVIN · 1985 to 2011
$126.2M
PROTOCOLS FOR MATURING AND FREEZING OOCYTESR01RR013439 · NCRR · UNIVERSITY OF CALIFORNIA DAVIS · PI VANDEVOORT, CATHERINE A · 1998 to 2006
$3.5M
Prostaglandin Receptors in Primate Ovulatory FolliclesR01HD054691 · NICHD · EASTERN VIRGINIA MEDICAL SCHOOL · PI DUFFY, DIANE M · 2007 to 2011
$2.0M
REPRODUCTIVE BIOLOGY: EARLY PREGNANCY AND DEVELOPMENTT32HD007455 · NICHD · UNIVERSITY OF KANSAS MEDICAL CENTER · PI KINSEY, WILLIAM H. · 1996 to 2010
$747k
Post-transcriptional gene regulation in the ovaryR21HD051870 · NICHD · UNIVERSITY OF KANSAS MEDICAL CENTER · PI CHRISTENSON, LANE K · 2006 to 2007
$359k
NCRR NIH HHS RR00169NCRR NIH HHS RR13439NICHD NIH HHS HD051870NICHD NIH HHS HD054691NICHD NIH HHS R01 HD054691NICHD NIH HHS T32HD007455
6 · The paper itself

Abstract

backgroundThe ovulatory gonadotropin surge increases synthesis of prostaglandin E2 (PGE2) by the periovulatory follicle. PGE2 actions on granulosa cells are essential for successful ovulation. The aim of the present study is to determine if PGE2 also acts directly at the oocyte to regulate periovulatory events.

methodsOocytes were obtained from monkeys and mice after ovarian follicular stimulation and assessed for PGE2 receptor mRNA and proteins. Oocytes were cultured with vehicle or PGE2 and assessed for cAMP generation, resumption of meiosis, and in vitro fertilization.

resultsGerminal vesicle intact (GV) oocytes from both monkeys and mice expressed mRNA for the PGE2 receptors EP2, EP3, and EP4. EP2 and EP4 proteins were detected by confocal microscopy in oocytes of both species. Monkey and mouse oocytes responded to PGE2 as well as agonists selective for EP2 and EP4 receptors with elevated cAMP, consistent with previous identification of EP2 and EP4 as Gαs/adenylyl cyclase coupled receptors. Incubation of mouse GV stage oocytes with PGE2 delayed oocyte nuclear maturation in vitro, but PGE2 treatment did not alter the percentage of mouse oocytes that fertilized successfully. PGE2 treatment also decreased the percentage of monkey oocytes that resumed meiosis in vitro. In contrast with mouse oocytes, the percentage of monkey oocytes which fertilized in vitro was lower after treatment with PGE2. Monkey oocytes with intact cumulus showed delayed nuclear maturation, but fertilization rate was not affected by PGE2 treatment.

conclusionsMonkey and mouse oocytes express functional PGE2 receptors. PGE2 acts directly at mammalian oocytes to delay nuclear maturation. Surrounding cumulus cells modulate the effect of PGE2 to alter subsequent fertilization.

Indexed as

AnimalsCells, CulturedDinoprostoneFemaleFertilization in VitroMacaca fascicularisMaleMammalsMiceMice, Inbred C57BLOocytesOogenesisReceptors, Prostaglandin EDinoprostoneReceptors, Prostaglandin E

Identifiers

PMID21040553
PMCPMC2988801
OpenAlexW2121331723

What OpenQuestion holds

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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.