Evidence map›Paper›PMID 29959620›Full record

ArticleJournal of assisted reproduction and genetics2018

Transcripts encoding free radical scavengers in human granulosa cells from primordial and primary ovarian follicles.

E H Ernst, K Lykke-Hartmann

Open access · bronzeAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.5field-weighted citation impact, top 37% 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

9 citing papers in PubMed, 16 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

2 authors at 1 institution in 1 country.

E H ErnstDepartment of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, 8000, Aarhus C, Denmark.
K Lykke-HartmannDepartment of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, 8000, Aarhus C, Denmark. kly@biomed.au.dk.ORCID http://orcid.org/0000-0002-6702-183X
Aarhus University · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo study the presence and distribution of genes encoding free radical scavengers in human granulosa cells from primordial and primary ovarian follicles.

methodsA class comparison study on existing granulosa cell transcriptome from primordial (n = 539 follicles) and primary (n = 261) follicles donated by three women having ovarian tissue cryopreserved before chemotherapy was performed and interrogated.

resultsIn granulosa cells from primordial follicles, 30 genes were annotated 'mitochondrial dysfunction' including transcripts (PRDX5, TXN2) encoding enzymatic free radical scavengers peroxiredoxin 5 and thioredoxin 2. Several apoptosis regulation genes were noted (BCL2, CAS8, CAS9, AIFM1). In granulosa cells from primary follicles, mitochondrial dysfunction signalling pathway was annotated. High expression of transcripts encoding the free radical scavenger peroxiredoxin 3, as well as anti-apoptotic enzyme BCL2, was found. Interestingly, PARK7 encoding the deglycase (DJ-1) protein was expressed in granulosa cells from primary follicles. DJ-1 is implicated in oxidative defence and functions as a positive regulator of the androgen receptor and as a negative regulator of the phosphatidylinositol 3-kinase (PI3K)/phosphatase and tensin homolog (PTEN)/serine-threonine protein kinase (AKT) signalling pathway suppressor PTEN.

conclusionsThe results indicate extensive energy production and free radical scavenging in the granulosa cells of primordial follicles with potential implications for ovarian ageing, cigarette smoking, premature ovarian failure and polycystic ovarian syndrome. Furthermore, DJ-1 may be involved in androgen responsiveness and the regulation of follicle growth via PI3K/PTEN/AKT signalling pathway regulation in the granulosa cells of primary follicles. The involvement of mitochondrial free radical production in the age-related decline of competent oocytes is becoming apparent.

Indexed as

ApoptosisCellular SenescenceCigarette SmokingFemaleFree Radical ScavengersGene Expression Regulation, DevelopmentalGranulosa CellsHumansMitochondriaOocytesOogenesisOvarian FolliclePolycystic Ovary SyndromePrimary Ovarian InsufficiencySignal TransductionTranscriptomeFree Radical ScavengersAntioxidantBCL2DJ-1 (PARK7)FertilityFree radicalGranulosa cellsHuman primordial folliclesIntegrityMitochondriaOvarian ageingPeroxiredoxinReactive nitrogen species (RNS)Reactive oxygen species (ROS)ROS scavengerThioredoxin

Identifiers

PMID29959620
PMCPMC6150893
OpenAlexW2810551608

What OpenQuestion 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 OpenQuestion graph.