Evidence map›Paper›PMID 25519716›Full record

ArticleReproductive sciences (Thousand Oaks, Calif.)2015

Vitamin C Induces the Reduction of Oxidative Stress and Paradoxically Stimulates the Apoptotic Gene Expression in Extravillous Trophoblasts Derived From First-Trimester Tissue.

Akihiro Kawashima, Akihiko Sekizawa, Keiko Koide, Junichi Hasegawa, Kazue Satoh, Tatsuya Arakaki, Shin Takenaka, Ryu Matsuoka

Open access · bronzeAbstract read
In one paragraph

Article in Reproductive sciences (Thousand Oaks, Calif.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
0.3field-weighted citation impact, top 34% 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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Sex-specific glomerular filtration rate changes in response to acute hemoglobin exposure.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2025
    Article
  6. Oxidative Stress in Cardiovascular Diseases: Mechanisms and Exploring Advanced Therapies.Cardiovascular & hematological agents in medicinal chemistry · 2025
    Review
  7. Article
  8. Article
  9. Review
  10. Review
  11. Review
  12. Article
  13. Review
  14. Review
  15. Oxygen is toxic in the cold inFrontiers in physiology · 2024
    Article
  16. Review
  17. Review
  18. Article
  19. The Effects of Vitamins and Micronutrients onJournal of immunology research · 2022
    Review
  20. 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

8 authors at 1 institution in 1 country.

Akihiro KawashimaDepartment of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan kurobei343@mac.com.
Akihiko SekizawaDepartment of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan.
Keiko KoideDepartment of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan.
Junichi HasegawaDepartment of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan.
Kazue SatohDepartment of Anatomy, Showa University School of Medicine, Shinagawa, Japan.
Tatsuya ArakakiDepartment of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan.
Shin TakenakaDepartment of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan.
Ryu MatsuokaDepartment of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan.
Showa University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo investigate the effects of vitamin C on the expression of the genes related to apoptosis in extravillous trophoblasts (EVTs) in the first trimester.

methodsExtravillous trophoblasts were cultured under 2% O2 followed by 2% O2 or 8% O2 with or without vitamin C. The level of reactive oxygen species (ROS) in the cultured medium was estimated using electron spin resonance spectroscopy. The expression levels of the genes TP53, BCL2, and BAX were quantified using real-time quantitative polymerase chain reaction.

resultsReactive oxygen species were found to be decreased after adding vitamin C under increasing oxygen concentrations. In addition, the ratio of BAX/BCL2 also increased after adding vitamin C under conditions of 2% O2, while the gene expression level of BCL2 increased after adding vitamin C under increasing oxygen concentrations. In contrast, the gene expression level of TP53 and the ratio of BAX/BCL2 both decreased.

conclusionWe have revealed that vitamin C reduces ROS and may promote the apoptosis of EVTs under conditions of 2% O2 while paradoxically preventing apoptosis under increasing oxygen concentrations.

Indexed as

ApoptosisAscorbic AcidCells, CulturedChorionic VilliFemaleGene Expression Regulation, DevelopmentalHumansOxidative StressPlacentaPregnancyPregnancy Trimester, FirstReactive Oxygen SpeciesTrophoblastsAscorbic AcidReactive Oxygen SpeciesapoptosisESRextravillous trophoblastsRT-PCRvitamin C

Identifiers

PMID25519716
PMCPMC4565473
OpenAlexW2097813231

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.