Evidence mapPaperPMID 36294452Full record

ArticleJournal of clinical medicine2022

The Effect of Stimulation Protocols (GnRH Agonist vs. Antagonist) on the Activity of mTOR and Hippo Pathways of Ovarian Granulosa Cells and Its Potential Correlation with the Outcomes of In Vitro Fertilization: A Hypothesis.

Michail Papapanou, Kalliopi Syristatidi, Maria Gazouli, Makarios Eleftheriades, Nikolaos Vlahos, Charalampos Siristatidis

Open access · goldAbstract read
In one paragraph

Article in Journal of clinical medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.4field-weighted citation impact, top 46% 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

1 citing paper in PubMed, 3 citations in OpenAlex.

  1. 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 2 institutions in 2 countries.

Michail PapapanouAssisted Reproduction Unit, Second Department of Obstetrics and Gynecology, "Aretaieion" Hospital, Medical School, National and Kapodistrian University of Athens, 76 Vas. Sofias Av., 11528 Athens, Greece.ORCID 0000-0001-8331-2402
Kalliopi SyristatidiSchool of Medicine, University of St. Andrews, North Haugh, St. Andrews KY16 9TF, UK.
Maria GazouliLaboratory of Biology, Medical School, National and Kapodistrian University of Athens, 176 Michalakopoulou Str., 11527 Athens, Greece.ORCID 0000-0002-3295-6811
Makarios EleftheriadesSecond Department of Obstetrics and Gynecology, "Aretaieion" Hospital, Medical School, National and Kapodistrian University of Athens, Vas. Sofias 76, 11528 Athens, Greece.ORCID 0000-0003-4967-2505
Nikolaos VlahosAssisted Reproduction Unit, Second Department of Obstetrics and Gynecology, "Aretaieion" Hospital, Medical School, National and Kapodistrian University of Athens, 76 Vas. Sofias Av., 11528 Athens, Greece.
Charalampos SiristatidisAssisted Reproduction Unit, Second Department of Obstetrics and Gynecology, "Aretaieion" Hospital, Medical School, National and Kapodistrian University of Athens, 76 Vas. Sofias Av., 11528 Athens, Greece.ORCID 0000-0003-0850-6623
National and Kapodistrian University of Athens · GRUniversity of St Andrews · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Controlled ovarian hyperstimulation (COH) is essential for the success of in vitro fertilization (IVF). Evidence showing the comparison of different COH protocols remains predominantly of low certainty and derives from unspecified infertile and highly heterogeneous populations. Thus, personalized approaches to examine the response of patients to the various COH protocols need to be investigated. Data from in vitro and animal studies have identified the mechanistic target of rapamycin (mTOR) and Hippo signaling pathways play a key role in follicular homeostasis and oocyte quality. To be specific, current data indicate the controlled activation of mTOR and the controlled inhibition of the Hippo pathway within the ovarian granulosa cells (GC). Both are reported to lead to a nurturing follicular microenvironment, increase oocyte quality, and potentially improve reproductive outcomes. As intracellular markers, phosphorylated/unphosphorylated levels of the pathways' main downstream mediators could be included among the candidate "personalized" predictors of patients' response to COH protocols and final IVF outcomes. Based on these hypotheses, we make a preliminary attempt to investigate their validity: We propose a prospective cohort study to compare the levels of certain phosphorylated/unphosphorylated components of the investigated pathways (mTOR, ribosomal protein S6 kinase beta-1 (p70S6K-1), yes-associated protein-1 (YAP-1), and transcriptional coactivator with PDZ-binding motif (TAZ)) within the follicular fluid-isolated GC between women undergoing gonadotropin-releasing hormone (GnRH) antagonist/"short" protocols and those receiving GnRH agonist/"long 21" protocols. A case-control design comparing these levels between women achieving pregnancy and those who did not is further planned. Additional analyses addressing the population's expected heterogeneity are planned after the completion of the pilot phase, during which 100 participants undergoing IVF are intended to be recruited. At this stage, these hypotheses are solely based on in vitro/animal data, and thus, similar studies on humans in this respect are necessary for the investigation of their potential validity.

Indexed as

assisted reproductive techniquesGnRH agonistGnRH antagonistHippo signaling pathwayin vitro fertilizationmechanistic target of rapamycinovarian stimulation protocol

Identifiers

PMID36294452
PMCPMC9605084
OpenAlexW4306765286

What Socratic holds

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Registered trials

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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 Socratic graph.