Evidence map›Paper›PMID 25889494›Full record

ArticleReproductive biology and endocrinology : RB&E2015

A possible role for AMP-activated protein kinase activated by metformin and AICAR in human granulosa cells.

Yufuko Kai, Yasushi Kawano, Hanae Yamamoto, Hisashi Narahara

Open access · goldAbstract read
In one paragraph

Article in Reproductive biology and endocrinology : RB&E, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

16 citing papers in PubMed, 21 citations in OpenAlex.

  1. Review
  2. Article
  3. Metformin Beyond Glycemic Control: Cardiovascular Protection and Diabetes Prevention.Journal of cardiovascular development and disease · 2026
    Review
  4. Review
  5. Review
  6. Vitamin BJournal of the Turkish German Gynecological Association · 2022
    Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. 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

4 authors at 1 institution in 1 country.

Yufuko KaiDepartment of Obstetrics and Gynecology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama, Yufu, Oita, 879-5593, Japan. yufukou@oita-u.ac.jp.
Yasushi KawanoDepartment of Obstetrics and Gynecology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama, Yufu, Oita, 879-5593, Japan. kawayas@oita-u.ac.jp.
Hanae YamamotoDepartment of Obstetrics and Gynecology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama, Yufu, Oita, 879-5593, Japan. h-sawa@oita-u.ac.jp.
Hisashi NaraharaDepartment of Obstetrics and Gynecology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama, Yufu, Oita, 879-5593, Japan. naraharh@oita-u.ac.jp.
Oita University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWomen with polycystic ovary syndrome (PCOS) are generally insulin- resistant and are consequently often treated with metformin. We investigated the effect of metformin and AICAR on the AMP-activated protein kinase (AMPK) pathway.

methodsWe evaluated the effects of 5-amino-imidazole-4-carboxyamide-1- beta-D-ribofuranoside (AICAR) and metformin on tumor necrosis factor (TNF)-alpha- stimulated chemokine production in human granulosa cells. The phosphorylations of AMPK, I-kappaB, 4E-BP-1, p70S6K were analyzed by western immunoblotting.

resultsAICAR and metformin markedly reduced the IL-8 and GROalpha production induced by TNF-alpha. AICAR and metformin also reduced the TNF-alpha-induced phosphorylation of I-kappaB. The phosphorylations of I-kappaB, 4EBP-1, p70S6K were inhibited via an AMPK-dependent signal transduction.

conclusionsThese results suggest that metformin promotes granulosa cell function by reducing a TNF-alpha- and chemokine-mediated inflammatory reaction through an AMPK-dependent pathway. These finding may have implications for metformin's actions during the treatment of PCOS with metformin.

Indexed as

Adaptor Proteins, Signal TransducingAminoimidazole CarboxamideAMP-Activated Protein KinasesCell Cycle ProteinsChemokinesFemaleGranulosa CellsHumansI-kappa B ProteinsMetforminPhosphoproteinsPhosphorylationRibonucleotidesRibosomal Protein S6 Kinases, 70-kDaSignal TransductionTumor Necrosis Factor-alphaAdaptor Proteins, Signal TransducingAICA ribonucleotideAminoimidazole CarboxamideAMP-Activated Protein KinasesCell Cycle ProteinsChemokinesEIF4EBP1 protein, humanI-kappa B ProteinsMetforminPhosphoproteinsRibonucleotidesRibosomal Protein S6 Kinases, 70-kDaTumor Necrosis Factor-alpha

Identifiers

PMID25889494
PMCPMC4397678
OpenAlexW2138505924

What OpenQuestion holds

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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.