Evidence map›Paper›PMID 23074219›Full record

ArticleThe Journal of biological chemistry2012

Phosphoenolpyruvate carboxykinase and glucose-6-phosphatase are required for steroidogenesis in testicular Leydig cells.

Seung Won Ahn, Gil-Tae Gang, Surendar Tadi, Balachandar Nedumaran, Yong Deuk Kim, Ji Hoon Park, Gi Ryang Kweon, Seung-Hoi Koo, Keesook Lee, Ryun-Sup Ahn and 4 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

15 citing papers in PubMed, 33 citations in OpenAlex.

  1. Review
  2. Identification of Male Sex-Related Genes Regulated byInternational journal of molecular sciences · 2023
    Article
  3. Article
  4. Article
  5. Article
  6. Roles of AMP-Activated Protein Kinase (AMPK) in Mammalian Reproduction.Frontiers in cell and developmental biology · 2020
    Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. MAFB mediates the therapeutic effect of sleeve gastrectomy for obese diabetes mellitus by activation of FXR expression.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2018
    Article
  12. Article
  13. Article
  14. Review
  15. 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

14 authors at 7 institutions in 2 countries.

Seung Won AhnNational Creative Research Initiatives Center for Nuclear Receptor Signals, School of Biological Sciences and Technology, Chonnam National University, Gwangju 500-757, Republic of Korea.
Gil-Tae Gang
Surendar Tadi
Balachandar Nedumaran
Yong Deuk Kim
Ji Hoon Park
Gi Ryang Kweon
Seung-Hoi Koo
Keesook Lee
Ryun-Sup Ahn
Yong-Hyeon Yim
Chul-Ho Lee
Robert A Harris
Hueng-Sik Choi
Chonnam National University · KRChungnam National University · KRCHA University · KRIndiana University – Purdue University Indianapolis · USKorea Research Institute of Bioscience and Biotechnology · KRKorea Research Institute of Standards and Science · KRSamsung (South Korea) · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cyclic AMP (cAMP) induces steroidogenic enzyme gene expression and stimulates testosterone production in Leydig cells. Phosphoenolpyruvate carboxykinase (PEPCK) is expressed in Leydig cells, but its role has not been defined. In this study, we found that PEPCK and glucose-6-phosphatase (Glc-6-Pase) are increased significantly following cAMP treatment of mouse Leydig cells. Moreover, cAMP treatment increased recruitment of the cAMP-response element-binding transcription factor and decreased recruitment of the corepressor DAX-1 on the pepck promoter. Furthermore, cAMP induced an increase in ATP that correlated with a decrease in phospho-AMP-activated protein kinase (AMPK). In contrast, knockdown or inhibition of PEPCK decreased ATP and increased phospho-AMPK. Treatment with an AMPK activator or overexpression of the constitutively active form of AMPK inhibited cAMP-induced steroidogenic enzyme promoter activities and gene expression. Liver receptor homolog-1 (LRH-1) was involved in cAMP-induced steroidogenic enzyme gene expression but was inhibited by AMPK activation in Leydig cells. Additionally, inhibition or knockdown of PEPCK and Glc-6-Pase decreased cAMP-mediated induction of steroidogenic enzyme gene expression and steroidogenesis. Finally, pubertal mouse (8-week-old) testes and human chorionic gonadotropin-induced prepubertal mouse testes showed increased PEPCK and Glc-6-Pase gene expression. Taken together, these results suggest that induction of PEPCK and Glc-6-Pase by cAMP plays an important role in Leydig cell steroidogenesis.

Indexed as

AMP-Activated Protein KinasesAnimalsCyclic AMPDAX-1 Orphan Nuclear ReceptorGene Expression Regulation, EnzymologicGlucose-6-PhosphataseHeLa CellsHumansLeydig CellsMaleMicePhosphoenolpyruvate Carboxykinase (ATP)Promoter Regions, GeneticReceptors, Cytoplasmic and NuclearAMP-Activated Protein KinasesCyclic AMPDAX-1 Orphan Nuclear ReceptorGlucose-6-PhosphataseNR0B1 protein, humanNr0b1 protein, mouseNR5A2 protein, humanNr5a2 protein, mousePhosphoenolpyruvate Carboxykinase (ATP)Receptors, Cytoplasmic and Nuclear

Identifiers

PMID23074219
PMCPMC3516735
OpenAlexW2091961171

What OpenQuestion holds

Textmetadata
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.