Evidence map›Paper›PMID 29648638›Full record

ArticleEndocrinology2018

Ovulatory Induction of SCG2 in Human, Nonhuman Primate, and Rodent Granulosa Cells Stimulates Ovarian Angiogenesis.

Patrick R Hannon, Diane M Duffy, Katherine L Rosewell, Mats Brännström, James W Akin, Thomas E Curry

Open access · bronzeAbstract read
In one paragraph

Article in Endocrinology, 2018. 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
1.8field-weighted citation impact, top 15% 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, 29 citations in OpenAlex.

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  19. Newly Identified Regulators of Ovarian Folliculogenesis and Ovulation.International journal of molecular sciences · 2020
    Review
  20. Periovulatory insulin signaling is essential for ovulation, granulosa cell differentiation, and female fertility.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2020
    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

6 authors at 4 institutions in 2 countries.

Patrick R HannonDepartment of Obstetrics and Gynecology, University of Kentucky, Lexington, Kentucky.
Diane M DuffyDepartment of Physiological Sciences, Eastern Virginia Medical School, Norfolk, Virginia.
Katherine L RosewellDepartment of Obstetrics and Gynecology, University of Kentucky, Lexington, Kentucky.
Mats BrännströmDepartment of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
James W AkinBluegrass Fertility Center, Lexington, Kentucky.
Thomas E CurryDepartment of Obstetrics and Gynecology, University of Kentucky, Lexington, Kentucky.
University of Kentucky · USBluegrass Care Navigators · USEastern Virginia Medical School · USUniversity of Gothenburg · SE

Funding

Ovulation and Luteal Formation in Rodents Monkeys and WomenP01HD071875 · NICHD · UNIVERSITY OF KENTUCKY · PI CURRY, THOMAS E · 2014 to 2018
$6.1M
The MMP system in human ovulation: localization, regulation, and functionR01HD057446 · NICHD · UNIVERSITY OF KENTUCKY · PI CURRY, THOMAS E · 2009 to 2013
$1.4M
NICHD NIH HHS P01 HD071875NICHD NIH HHS R01 HD057446
6 · The paper itself

Abstract

The luteinizing hormone (LH) surge is essential for ovulation, but the intrafollicular factors induced by LH that mediate ovulatory processes (e.g., angiogenesis) are poorly understood, especially in women. The role of secretogranin II (SCG2) and its cleaved bioactive peptide, secretoneurin (SN), were investigated as potential mediators of ovulation by testing the hypothesis that SCG2/SN is induced in granulosa cells by human chorionic gonadotropin (hCG), via a downstream LH receptor signaling mechanism, and stimulates ovarian angiogenesis. Humans, nonhuman primates, and rodents were treated with hCG in vivo resulting in a significant increase in the messenger RNA and protein levels of SCG2 in granulosa cells collected early during the periovulatory period and just prior to ovulation (humans: 12 to 34 hours; monkeys: 12 to 36 hours; rodents: 4 to 12 hours post-hCG). This induction by hCG was recapitulated in an in vitro culture system utilizing granulosa-lutein cells from in vitro fertilization patients. Using this system, inhibition of downstream LH receptor signaling pathways revealed that the initial induction of SCG2 is regulated, in part, by epidermal growth factor receptor signaling. Further, human ovarian microvascular endothelial cells were treated with SN (1 to 100 ng/mL) and subjected to angiogenesis assays. SN significantly increased endothelial cell migration and new sprout formation, suggesting induction of ovarian angiogenesis. These results establish that SCG2 is increased in granulosa cells across species during the periovulatory period and that SN may mediate ovulatory angiogenesis in the human ovary. These findings provide insight into the regulation of human ovulation and fertility.

Indexed as

AdultAnimalsCells, CulturedFemaleGranulosa CellsHumansMacaca fascicularisMiceMice, Inbred C57BLNeovascularization, PhysiologicOvaryOvulationRatsRats, Sprague-DawleySecretogranin IIUp-RegulationSecretogranin II

Identifiers

PMID29648638
PMCPMC6287591
OpenAlexW2804424681

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.