Evidence map›Paper›PMID 32961443›Full record

ArticleRedox biology2020

Novel ovarian endometriosis model causes infertility via iron-mediated oxidative stress in mice.

Shotaro Hayashi, Tomoko Nakamura, Yashiro Motooka, Fumiya Ito, Li Jiang, Shinya Akatsuka, Akira Iwase, Hiroaki Kajiyama, Fumitaka Kikkawa, Shinya Toyokuni

Open access · goldAbstract read
In one paragraph

Article in Redox biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 4 pooled it
9.5field-weighted citation impact, top 1% 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

52 citing papers in PubMed, 4 syntheses or guidelines pooled it, 93 citations in OpenAlex.

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  14. Ferroptosis and cancer: when iron turns against tumors.Cellular and molecular life sciences : CMLS · 2025
    Review
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  19. Susceptibility of Brca1Cancer science · 2025
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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

10 authors at 3 institutions in 2 countries.

Shotaro HayashiDepartment of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-Ku, Nagoya, 466-8550, Japan; Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-Ku, Nagoya, 466-8550, Japan.
Tomoko NakamuraDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-Ku, Nagoya, 466-8550, Japan.
Yashiro MotookaDepartment of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-Ku, Nagoya, 466-8550, Japan.
Fumiya ItoDepartment of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-Ku, Nagoya, 466-8550, Japan.
Li JiangDepartment of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-Ku, Nagoya, 466-8550, Japan.
Shinya AkatsukaDepartment of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-Ku, Nagoya, 466-8550, Japan.
Akira IwaseDepartment of Obstetrics and Gynecology, Gunma University School of Medicine, 3-39-22, Showa-machi, Maebashi, 371-8511, Japan.
Hiroaki KajiyamaDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-Ku, Nagoya, 466-8550, Japan.
Fumitaka KikkawaDepartment of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-Ku, Nagoya, 466-8550, Japan.
Shinya ToyokuniDepartment of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-Ku, Nagoya, 466-8550, Japan; Center for Low Temperature Plasma Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya, 484-8601, Japan; Sydney Medical School, The University of Sydney, NSW, Australia. Electronic address: toyokuni@med.nagoya-u.ac.jp.
Nagoya University · JPGunma University · JPThe University of Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ovarian endometriosis (OE) provides women of reproductive age with not only severe menstrual pain but also infertility and an increased risk for ovarian carcinogenesis. Whereas peritoneal endometriosis models have been developed with syngeneic implantation of minced uterine tissue and oncogenic K-ras allele with conditional Pten deletion within ovarian surface epithelium generated preneoplastic endometrial glandular morphology, followed by endometrioid adenocarcinoma, there has been no mouse model of OE similar to human counterparts, applicable to preclinical studies. Here we for the first time established a murine OE model that reveals infertility, and evaluated the involvement of iron catalyzed oxidative stress in the pathogenesis. Minced uterine tissue from female mice was implanted on ovarian surface of syngeneic mice after bursectomy to induce OE. Ectopic growth of endometrium was observed in association with ovary 4 weeks after implantation in 85.7% (12/14) of the operated mice with our protocol. Endometriotic lesions involved intestine, pancreas and peritoneal wall. Fibrosis around the ovary was prominent and increased time-dependently in the OE group. Iron accumulation was significantly increased in the OE group, leading to oxidative stress in each stage of the follicles as evaluated by 4-hydroxy-2-nonenal-modified proteins and 8-hydroxy-2'-deoxyguanosine. Expression of follicle stimulating hormone receptor in the follicles revealed a significant decrease during pre-antral, antral and pre-ovulatory phases in the OE group. Finally, the number of pups was significantly reduced in the OE group in comparison to the controls. This model affords an opportunity to evaluate agents or procedures to counteract ovarian endometriosis in the preclinical settings.

Indexed as

EndometriosisInfertilityIronOxidative StressAnimalsDisease Models, AnimalFemaleMiceOvaryIronFollicle stimulating hormone receptorInfertilityIronMouse modelOvarian endometriosisOxidative stress

Identifiers

PMID32961443
PMCPMC7509075
OpenAlexW3084449299

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.