Evidence map›Paper›PMID 32241504›Full record

ArticlePoultry science2020

Melatonin regulates the ovarian function and enhances follicle growth in aging laying hens via activating the mammalian target of rapamycin pathway.

Er-Ying Hao, Hui Chen, De-He Wang, Chen-Xuan Huang, Ya-Guang Tong, Yi-Fan Chen, Rong-Yan Zhou, Ren-Lu Huang

Open access · goldAbstract read
In one paragraph

Article in Poultry science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.9field-weighted citation impact, top 8% 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

22 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
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  4. Review
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  6. Article
  7. Melatonin: A Silver Bullet for Fertility and Reproductive Health.Reproductive sciences (Thousand Oaks, Calif.) · 2026
    Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Melatonin in animal husbandry: functions and applications.Frontiers in veterinary science · 2024
    Review
  14. Article
  15. Article
  16. Article
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  19. Review
  20. Article
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.

Er-Ying HaoCollege of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China.
Hui ChenCollege of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China.
De-He WangCollege of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China.
Chen-Xuan HuangCollege of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China.
Ya-Guang TongCollege of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China.
Yi-Fan ChenCollege of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China.
Rong-Yan ZhouCollege of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China.
Ren-Lu HuangCollege of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, China. Electronic address: dkhrl@126.com.
Hebei Agricultural University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The signal pathway of target of rapamycin (TOR) plays an important role in regulating cell growth and proliferation, follicular development, and ovulation. Melatonin (N-acetyl-5-methoxytryptamine) (MT) is involved in the regulation of many physiological functions in animals. Recent studies have shown that MT affects the number and the degree of maturation of follicles in the ovary, but there are few studies concerning its mechanism. Therefore, the aim of this study was to investigate the mechanism of TOR signal pathway in the regulation of ovarian function by MT in aging laying hens. In the present study, a total of 60 hens (70-week-old) were randomly divided into 2 groups: control group and melatonin group (M). Melatonin was administered intraperitoneally at a dose of 20 mg/kg/D for 28 D in the M group. The results showed that MT significantly increased the levels of the antioxidant enzymes superoxide dismutase and total antioxidant capacity (P < 0.01) as well as levels of immunoglobulin (IgA, IgG, and IgM) (P < 0.05) and the reproductive hormones estradiol and luteinizing hormone (P < 0.01) in the plasma and also increased the numbers of middle white follicles and small white follicles (P < 0.05) and decreased the level of reactive oxygen species in plasma (P < 0.01) in laying hens. There were higher expression levels in MT receptor A (P < 0.05), melatonin receptor B (P < 0.01), and tuberous sclerosis complex 2 (P < 0.01). Activation of TOR, 4E binding protein-l (4E-BP1), and ribosomal protein 6 kinase (P < 0.01) was found in the M. The levels of mTOR and p-mTOR protein were increased in the M (P < 0.05). The mTORC1-dependent 4E-BP1 and p-4E-BP1 were increased in the M (P < 0.05). This study indicated that MT may enhance follicle growth by increasing levels of antioxidant enzymes and reproductive hormones and by activating the mTOR and downstream components in aging laying hens.

Indexed as

Signal TransductionAnimalsAntioxidantsAvian ProteinsChickensFemaleInjections, IntraperitonealMelatoninOvarian FollicleOvaryRandom AllocationTOR Serine-Threonine KinasesAntioxidantsAvian ProteinsMelatoninTOR Serine-Threonine KinasesagingfolliclehenmelatoninmTOR

Identifiers

PMID32241504
PMCPMC7587849
OpenAlexW3003874504

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.