Evidence map›Paper›PMID 30887159›Full record

ArticleJournal of assisted reproduction and genetics2019

Fibroblast growth factor 2 regulates cumulus differentiation under the control of the oocyte.

Rodrigo G Barros, Paula F Lima, Ana Caroline S Soares, Lorena Sanches, Christopher A Price, José Buratini

Open access · greenAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
3.3field-weighted citation impact, top 9% 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

13 citing papers in PubMed, 34 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

6 authors at 2 institutions in 2 countries.

Rodrigo G BarrosDepartamento de Fisiologia, Instituto de Biociências, Universidade Estadual Paulista, Rubião Junior, Botucatu, São Paulo, 18618-970, Brazil. rodrigo.garcia@unimi.it.ORCID http://orcid.org/0000-0002-1727-2155
Paula F LimaDepartamento de Fisiologia, Instituto de Biociências, Universidade Estadual Paulista, Rubião Junior, Botucatu, São Paulo, 18618-970, Brazil.
Ana Caroline S SoaresDepartamento de Fisiologia, Instituto de Biociências, Universidade Estadual Paulista, Rubião Junior, Botucatu, São Paulo, 18618-970, Brazil.
Lorena SanchesDepartamento de Fisiologia, Instituto de Biociências, Universidade Estadual Paulista, Rubião Junior, Botucatu, São Paulo, 18618-970, Brazil.
Christopher A PriceCentre de Recherche en Reproduction et Fertilité, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, Québec, J2S 7C6, Canada.
José BuratiniDepartamento de Fisiologia, Instituto de Biociências, Universidade Estadual Paulista, Rubião Junior, Botucatu, São Paulo, 18618-970, Brazil.
Universidade Estadual Paulista (Unesp) · BRUniversité de Montréal · CA

Funding

Conselho Nacional de Desenvolvimento Científico e Tecnológico 312521/2014-6Fundação de Amparo à Pesquisa do Estado de São Paulo 12/06417-8
6 · The paper itself

Abstract

purposeWe first assessed regulation of FGF2 expression in cumulus cells by FSH and oocyte-secreted factors during in vitro maturation (IVM). Then, we tested the hypothesis that FGF2 regulates meiotic progression, cumulus expansion, and apoptosis in cumulus-oocyte complexes (COC) undergoing IVM.

methodsIn vitro maturation of bovine COC was utilized as a model to assess regulation of FGF2 expression by FSH and oocyte-secreted factors (via microsurgical removal of the oocyte), as well as effects of graded doses of FGF2 on meiotic progression, degree of cumulus expansion, dissociation of cumulus cells, and cumulus cells apoptosis. Expression of genes regulating functional endpoints altered by FGF2 treatment was assessed in cumulus cells by real-time PCR. Cultures were replicated 4-5 times and effects of treatments were tested by ANOVA.

resultsFGF2 mRNA expression was increased by FSH and oocyte-secreted factors during IVM. Addition of FGF2 to the IVM medium advanced meiosis resumption, decreased the ease with which cumulus cells were dissociated, and inhibited cumulus cells apoptosis. Decreased cumulus dissociation was accompanied by decreased expression of TNFAIP6.

conclusionsThis is the first study showing that FGF2 expression is regulated by the oocyte in cumulus cells. Moreover, we report novel effects of FGF2 on cumulus cell survival and extracellular matrix (ECM) quality during IVM that may favor acquisition of developmental competence and suggest physiological roles during the final steps of COC differentiation.

Indexed as

Cell DifferentiationAnimalsApoptosisBlastocystCattleCumulus CellsEmbryo Culture TechniquesEmbryonic DevelopmentFemaleFibroblast Growth Factor 2In Vitro Oocyte Maturation TechniquesMeiosisOocytesFibroblast Growth Factor 2ApoptosisCumulus expansionFGF2IVMMeiosisOocyte-secreted factors

Identifiers

PMID30887159
PMCPMC6541720
OpenAlexW2921909923

What OpenQuestion holds

Textmetadata
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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.