Evidence map›Paper›PMID 34758863›Full record

ArticleJournal of ovarian research2021

Melatonin enhances SIRT1 to ameliorate mitochondrial membrane damage by activating PDK1/Akt in granulosa cells of PCOS.

Bo Zheng, Junan Meng, Yuan Zhu, Min Ding, Yuting Zhang, Jianjun Zhou

Open access · goldAbstract read
In one paragraph

Article in Journal of ovarian research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
8.5field-weighted citation impact, top 2% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Review
  6. Oxidative Stress andInternational journal of molecular sciences · 2026
    Review
  7. Article
  8. Sirtuins in Women's Health.Pharmaceuticals (Basel, Switzerland) · 2025
    Review
  9. Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Review
  17. Article
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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

6 authors at 1 institution in 1 country.

Bo Zheng *Reproductive Medicine Center, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Zhongshan Road 32, Nanjing, 210008, China.
Junan Meng *Reproductive Medicine Center, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Zhongshan Road 32, Nanjing, 210008, China.
Yuan ZhuReproductive Medicine Center, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Zhongshan Road 32, Nanjing, 210008, China.
Min DingReproductive Medicine Center, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Zhongshan Road 32, Nanjing, 210008, China.
Yuting ZhangReproductive Medicine Center, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Zhongshan Road 32, Nanjing, 210008, China.
Jianjun ZhouReproductive Medicine Center, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Zhongshan Road 32, Nanjing, 210008, China. zhou6jj@hotmail.com.ORCID http://orcid.org/0000-0002-9303-3623
Nanjing Drum Tower Hospital · CN

Funding

Jiangsu Provincial Key Research and Development Program BE2019601National Natural Science Foundation of China 81771537
6 · The paper itself

Abstract

Mitochondrial injury in granulosa cells (GCs) is associated with the pathophysiological mechanism of polycystic ovary syndrome (PCOS). Melatonin reduces the mitochondrial injury by enhancing SIRT1 (NAD-dependent deacetylase sirtuin-1), while the mechanism remains unclear. Mitochondrial membrane potential is a universal selective indicator of mitochondrial function. In this study, mitochondrial swelling and membrane defect mitochondria in granulosa cells were observed from PCOS patients and DHT-induced PCOS-like mice, and the cytochrome C level in the cytoplasm and the expression of BAX (BCL2-associated X protein) in mitochondria were significantly increased in GCs, with p-Akt decreased, showing mitochondrial membrane was damaged in GCs of PCOS. Melatonin treatment decreased mitochondrial permeability transition pore (mPTP) opening and increased the JC-1 (5,5',6,6'-tetrachloro1,1',3,3'-tetramethylbenzimidazolylcarbocyanine iodide) aggregate/monomer ratio in the live KGN cells treated with DHT, indicating melatonin mediates mPTP to increase mitochondrial membrane potential. Furthermore, we found melatonin decreased the levels of cytochrome C and BAX in DHT-induced PCOS mice. PDK1/Akt played an essential role in improving the mitochondrial membrane function, and melatonin treatment increased p-PDK 1 and p-Akt in vivo and in vitro. The SIRT1 was also increased with melatonin treatment, while knocking down SIRT1 mRNA inhibiting the protective effect of melatonin to activate PDK1/Akt. In conclusion, melatonin enhances SIRT1 to ameliorate mitochondrial membrane damage by activating PDK1/Akt in granulosa cells of PCOS.

Indexed as

3-Phosphoinositide-Dependent Protein KinasesAdultAnimalsbcl-2-Associated X ProteinBenzimidazolesCarbocyaninesCytochromes cCytoplasmFemaleGene Knockdown TechniquesGranulosa CellsHumansMelatoninMembrane Potential, MitochondrialMiceMitochondria3-Phosphoinositide-Dependent Protein Kinases5,5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazolocarbocyaninebcl-2-Associated X ProteinBenzimidazolesCarbocyaninesCytochromes cMelatoninMitochondrial Permeability Transition PoreProto-Oncogene Proteins c-aktSirtuin 1AktMelatoninmPTPPCOSSIRT1

Identifiers

PMID34758863
PMCPMC8582167
OpenAlexW3214035824

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.