Evidence map›Paper›PMID 22872579›Full record

ArticleEndocrinology2012

GPRC6A mediates the effects of L-arginine on insulin secretion in mouse pancreatic islets.

Min Pi, Yunpeng Wu, Nataliya I Lenchik, Ivan Gerling, L Darryl Quarles

Open access · bronzeAbstract read
In one paragraph

Article in Endocrinology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
5.9field-weighted citation impact, top 4% 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

45 citing papers in PubMed, 72 citations in OpenAlex.

  1. The roles of arginases and arginine in immunity.Nature reviews. Immunology · 2025
    Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. The Pancreatic β-Cell: The Perfect Redox System.Antioxidants (Basel, Switzerland) · 2021
    Review
  13. Article
  14. Functions of Osteocalcin in Bone, Pancreas, Testis, and Muscle.International journal of molecular sciences · 2020
    Review
  15. Humanized GPRC6AScientific reports · 2020
    Article
  16. Article
  17. Article
  18. Review
  19. Article
  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

5 authors at 1 institution in 1 country.

Min PiDepartment of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee 38163, USA. mpi@uthsc.edu
Yunpeng Wu
Nataliya I Lenchik
Ivan Gerling
L Darryl Quarles
University of Tennessee Health Science Center · US

Funding

PHARMACOLOGICALLY INDUCED NEO-OSTEOGENESISR01AR037308 · NIAMS · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI QUARLES, L DARRYL · 1991 to 2009
$3.3M
Discovery of an Osteocalcin Sensing GPCR Regulating Beta-Cell FunctionR01DK095812 · NIDDK · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI QUARLES, L DARRYL · 2013 to 2016
$1.4M
NIAMS NIH HHS R01 AR037308NIAMS NIH HHS R01-AR037308NIDDK NIH HHS R01 DK095812
6 · The paper itself

Abstract

L-arginine (l-Arg) is an insulin secretagogue, but the molecular mechanism whereby it stimulates insulin secretion from β-cells is not known. The possibility that l-Arg regulates insulin secretion through a G protein-coupled receptor (GPCR)-mediated mechanism is suggested by the high expression of the nutrient receptor GPCR family C group 6 member A (GPRC6A) in the pancreas and TC-6 β-cells and the finding that Gprc6a(-/]minus]) mice have abnormalities in glucose homeostasis. To test the direct role of GPRC6A in regulating insulin secretion, we evaluated the response of pancreatic islets derived from Gprc6a(-/]minus]) mice to L-Arg. We found that the islet size and insulin content were decreased in pancreatic islets from Gprac6a(-/]minus]) mice. These alterations were selective for β-cells, because there were no abnormalities in serum glucagon levels or glucagon content of islets derived from Gprac6a(-/]minus]) mice. Significant reduction was observed in both the pancreatic ERK response to L-Arg administration to Gprc6a(-/]minus]) mice in vivo and L-Arg-induced insulin secretion and production ex vivo in islets isolated from Gprc6a(-/]minus]) mice. L-Arg stimulation of cAMP accumulation in isolated islets isolated from Gprc6a(-/]minus]) mice was also diminished. These findings suggest that l-Arg stimulation of insulin secretion in β-cells is mediated, at least in part, through GPRC6A activation of cAMP pathways.

Indexed as

AnimalsArginineCyclic AMPExtracellular Signal-Regulated MAP KinasesGlucagonGlucoseInsulinInsulin-Secreting CellsInsulin SecretionIslets of LangerhansMiceMice, KnockoutPhosphorylationReceptors, G-Protein-CoupledArginineCyclic AMPExtracellular Signal-Regulated MAP KinasesGlucagonGlucoseGPRC6A protein, mouseInsulinReceptors, G-Protein-Coupled

Identifiers

PMID22872579
PMCPMC3512028
OpenAlexW2080748413

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.