Evidence map›Paper›PMID 30530902›Full record

ArticleThe Journal of endocrinology2019

Inhibitors of apoptosis protect the ovarian reserve from cyclophosphamide.

Yi Luan, Maxwell E Edmonds, Teresa K Woodruff, So-Youn Kim

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of endocrinology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 97 papers.

0numbers the graph read from it
0cells of the map it votes in
97citing papers in PubMed
13.1field-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

97 citing papers in PubMed, 158 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

37 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 1 country.

Yi LuanDivision of Reproductive Science in Medicine, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
Maxwell E EdmondsDivision of Reproductive Science in Medicine, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
Teresa K WoodruffDivision of Reproductive Science in Medicine, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
So-Youn KimDivision of Reproductive Science in Medicine, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
Northwestern University · USUniversity of Nebraska Medical Center · US

Funding

Project 3: Medically-based Protection of the Ovarian Reserve Against Anti-CancerP50HD076188 · NICHD · NORTHWESTERN UNIVERSITY AT CHICAGO · PI CHANG, R JEFFREY · 2014 to 2017
$6.2M
Assessing microenvironment and endothelial cell instruction of testis functionF31HD089693 · NICHD · NORTHWESTERN UNIVERSITY AT CHICAGO · PI EDMONDS, MAXWELL ETHAN · 2017 to 2019
$149k
NICHD NIH HHS F31 HD089693NICHD NIH HHS P50 HD076188
6 · The paper itself

Abstract

Cancer therapy can cause off-target effects including ovarian damage, which may result in primary ovarian insufficiency in girls and premenopausal women. Loss of ovarian follicles within the ovarian reserve leads to ovarian endocrine dysfunction and impaired fertility. Cyclophosphamide (CPA), a commonly used chemotherapeutic and immunosuppressant agent, is a gonadotoxic agent that destroys ovarian cells by crosslinking DNA. To protect the ovary against CPA damage, we sought to precisely map the mechanism by which the ovarian reserve is depleted by CPA. We found that CPA specifically depletes primordial follicles without affecting primary and secondary follicles in three independent murine strains (CD-1, C57BL/6J and BALB/cJ) in vivo. We directly tested the effect of the active metabolite of CPA, 1 μM 4-hydroxyperoxycyclophophamide (4-HC), in vitro and confirmed the loss of primordial oocytes but no change in the number of primary and secondary follicles. We demonstrated that phospho-AKT (p-AKT) and cleaved PARP (cPARP) are present in primordial oocytes 3 days after CPA injection, consistent with the role of these markers as part of the apoptotic cascade. Interestingly, p-AKT positive primordial oocytes co-expressed cPARP. Treatment of animals with specific inhibitors of apoptotic pathway components, ETP46464 and CHK2, blocked 4-HC‒induced DNA damage in vitro. These data suggest that CPA targets primordial germ cells in the ovarian reserve by stimulating apoptosis pathways. Adjuvant therapies to protect primordial germ cells from the off-target effects of CPA may reduce the risk of POI.

Indexed as

AnimalsAntineoplastic Agents, AlkylatingApoptosisCyclophosphamideFemaleHumansMice, Inbred BALB CMice, Inbred C57BLMice, Inbred ICROocytesOvarian FollicleOvarian ReserveOxazinesPoly(ADP-ribose) PolymerasesPrimary Ovarian InsufficiencyProtective AgentsAntineoplastic Agents, AlkylatingCyclophosphamideETP-46464OxazinesPoly(ADP-ribose) PolymerasesProtective AgentsProto-Oncogene Proteins c-aktQuinolinescancerovaryprimary ovarian insufficiencyprimordial follicle

Identifiers

PMID30530902
PMCPMC6540791
OpenAlexW2905546187

What OpenQuestion holds

Textmetadata
LicenceTDM
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.