Evidence map›Paper›PMID 32181477›Full record

ArticleEndocrinology2020

Dynorphin and GABAA Receptor Signaling Contribute to Progesterone's Inhibition of the LH Surge in Female Mice.

Yali Liu, Xiaofeng Li, Deyana Ivanova, Geffen Lass, Wen He, Qiuju Chen, Sha Yu, Yun Wang, Hui Long, Li Wang and 3 more

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Endocrinology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

7 citing papers in PubMed, 18 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 2 institutions in 2 countries.

Yali LiuDepartment of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Huangpu District, Shanghai, China.
Xiaofeng LiDepartment of Women and Children's Health, Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, UK.
Deyana IvanovaDepartment of Women and Children's Health, Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, UK.
Geffen LassDepartment of Women and Children's Health, Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, UK.
Wen HeDepartment of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Huangpu District, Shanghai, China.
Qiuju ChenDepartment of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Huangpu District, Shanghai, China.
Sha YuDepartment of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Huangpu District, Shanghai, China.
Yun WangDepartment of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Huangpu District, Shanghai, China.
Hui LongDepartment of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Huangpu District, Shanghai, China.
Li WangDepartment of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Huangpu District, Shanghai, China.
Qifeng LyuDepartment of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Huangpu District, Shanghai, China.
Yanping KuangDepartment of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Huangpu District, Shanghai, China.
Kevin T O'ByrneDepartment of Women and Children's Health, Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, UK.
Shanghai Ninth People's Hospital · CNKing's College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Progesterone can block estrogen-induced luteinising hormone (LH) surge secretion and can be used clinically to prevent premature LH surges. The blocking effect of progesterone on the LH surge is mediated through its receptor in the anteroventral periventricular nucleus (AVPV) of the hypothalamus. However, the underlying mechanisms are unclear. The preovulatory LH surge induced by estrogen is preceded by a significant reduction in hypothalamic dynorphin and gamma-aminobutyric acid (GABA) release. To test the detailed roles of dynorphin and GABA in an LH surge blockade by progesterone, ovariectomized and 17β-estradiol capsule-implanted (OVX/E2) mice received simultaneous injections of estradiol benzoate (EB) and progesterone (P) or vehicle for 2 consecutive days. The LH level was monitored from 2:30 pm to 8:30 pm at 30-minute intervals. Progesterone coadministration resulted in the LH surge blockade. A continuous microinfusion of the dynorphin receptor antagonist nor-BNI or GABAA receptor antagonist bicuculline into the AVPV from 3:00 pm to 7:00 pm reversed the progesterone-mediated blockade of the LH surge in 7 of 9 and 6 of 10 mice, respectively. In addition, these LH surges started much earlier than the surge induced by estrogen alone. However, 5 of 7 progesterone-treated mice did not show LH surge secretion after microinfusion with the GABAB receptor antagonist CGP-35348. Additionally, peripheral administration of kisspeptin-54 promotes LH surge-like release in progesterone treated mice. These results demonstrated that the progesterone-mediated suppression of the LH surge is mediated by an increase in dynorphin and GABAA receptor signaling acting though kisspeptin neurons in the AVPV of the hypothalamus in female mice.

Indexed as

AnimalsBicucullineDynorphinsEstradiolFemaleGABA AntagonistsHypothalamusHypothalamus, AnteriorKisspeptinsLuteinizing HormoneMice, Inbred C57BLNaltrexoneNeuronsOrganophosphorus CompoundsOvariectomyProgesteroneBicucullineCGP 35348DynorphinsEstradiolGABA AntagonistsKisspeptinsLuteinizing HormoneNaltrexonenorbinaltorphimineOrganophosphorus CompoundsProgesteroneReceptors, GABA-AAVPVdynorphinGABALH surgeprogesterone

Identifiers

PMID32181477
PMCPMC7153819
OpenAlexW3011973698

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.