Evidence map›Paper›PMID 26473111›Full record

ArticleClinical and experimental reproductive medicine2015

The potential role of granulosa cells in the maturation rate of immature human oocytes and embryo development: A co-culture study.

Bahia Namavar Jahromi, Zahra Mosallanezhad, Najmeh Matloob, Maryam Davari, Mohamed Amin Ghobadifar

Open access · hybridAbstract read
In one paragraph

Article in Clinical and experimental reproductive medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.0field-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

20 citing papers in PubMed, 49 citations in OpenAlex.

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  20. OocyteTurkish journal of obstetrics and gynecology · 2018
    Review
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

5 authors at 1 institution in 1 country.

Bahia Namavar JahromiInfertility Research Center, Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
Zahra MosallanezhadStudent Research Committee, Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
Najmeh MatloobInfertility Research Center, Mother and Child Hospital, Shiraz, Iran.
Maryam DavariInfertility Research Center, Mother and Child Hospital, Shiraz, Iran.
Mohamed Amin GhobadifarZoonoses Research Center, Faculty of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran.
Jahrom University · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIn order to increase the number of mature oocytes usable for intracytoplasmic sperm injection (ICSI), we aimed to investigate the effect of co-culturing granulosa cells (GCs) on human oocyte maturation in vitro, the fertilization rate, and embryo development.

methodsA total of 133 immature oocytes were retrieved and were randomly divided into two groups; oocytes that were cultured with GCs (group A) and oocytes that were cultured without GCs (group B). After in vitro maturation, only oocytes that displayed metaphase II (MII) underwent the ICSI procedure. The maturation and fertilization rates were analyzed, as well as the frequency of embryo development.

resultsThe mean age of the patients, their basal levels of follicle-stimulating hormone, and the number of oocytes recovered from the patients were all comparable between the two study groups. The number of oocytes that reached MII (mature oocytes) was 59 out of 70 (84.28%) in group A, compared to 41 out of 63 (65.07%) in group B (p=0.011). No significant difference between fertilization rates was found between the two study groups (p=0.702). The embryo development rate was higher in group A (33/59, 75%) than in group B (12/41, 42.85%; p=0.006). The proportion of highest-quality embryos and the blastocyst formation rate were significantly lower in group B than in group A (p=0.003 and p<0.001, respectively).

conclusionThe findings of the current study demonstrate that culturing immature human oocytes with GCs prior to ICSI improves the maturation rate and the likelihood of embryo development.

Indexed as

FertilizationGranulosa cellsIntracytoplasmic sperm injectionIn vitro oocyte maturation techniquesOocytes

Identifiers

PMID26473111
PMCPMC4604294
OpenAlexW2201243297

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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 OpenQuestion graph.