Evidence map›Paper›PMID 23475366›Full record

ArticleDiabetologia2013

GRP78 overproduction in pancreatic beta cells protects against high-fat-diet-induced diabetes in mice.

T Teodoro-Morrison, I Schuiki, L Zhang, D D Belsham, A Volchuk

Open access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Diabetologia, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
5.5field-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

29 citing papers in PubMed, 49 citations in OpenAlex.

  1. SARS-CoV-2 seeds IAPP aggregation and β-cell failure.Signal transduction and targeted therapy · 2026
    Article
  2. Article
  3. Article
  4. Review
  5. New Perspectives in Studying Type 1 Diabetes Susceptibility Biomarkers.International journal of molecular sciences · 2025
    Review
  6. World journal of gastroenterology · 2025
    Article
  7. Review
  8. Article
  9. Article
  10. GRP78 Activity Moderation as a Therapeutic Treatment against Obesity.International journal of environmental research and public health · 2022
    Review
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Dietary carbohydrates modulate metabolic and β-cell adaptation to high-fat diet-induced obesity.American journal of physiology. Endocrinology and metabolism · 2020
    Article
  19. Article
  20. Review
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 2 institutions in 1 country.

T Teodoro-MorrisonDivision of Cellular and Molecular Biology, Toronto General Research Institute, University Health Network, 101 College Street, TMDT 10-706, Toronto, ON M5G 1L7, Canada.
I Schuiki
L Zhang
D D Belsham
A Volchuk
University Health Network · CAUniversity of Toronto · CA

Funding

Canadian Institutes of Health Research MOP-114992Canadian Institutes of Health Research MOP-86641
6 · The paper itself

Abstract

aims/hypothesisEndoplasmic reticulum (ER) stress has been detected in pancreatic beta cells and in insulin-sensitive tissues, such as adipose and liver, in obesity-linked rodent models of type 2 diabetes. The contribution of ER stress to pancreatic beta cell dysfunction in type 2 diabetes is unclear. We hypothesised that increased chaperone capacity protects beta cells from ER stress and dysfunction caused by obesity and improves overall glucose homeostasis.

methodsWe generated a mouse model that overproduces the resident ER chaperone GRP78 (glucose-regulated protein 78 kDa) in pancreatic beta cells under the control of a rat insulin promoter. These mice were subjected to high-fat diet (HFD) feeding for 20 weeks and metabolic variables and markers of ER stress in islets were measured.

resultsAs expected, control mice on the HFD developed obesity, glucose intolerance and insulin resistance. In contrast, GRP78 transgenic mice tended to be leaner than their non-transgenic littermates and were protected against development of glucose intolerance, insulin resistance and ER stress in islets. Furthermore, islets from transgenic mice had a normal insulin content and normal levels of cell-surface GLUT2 (glucose transporter 2) and the transgenic mice were less hyperinsulinaemic than control mice on the HFD. CONCLUSIONS/

interpretationThese data show that increased chaperone capacity in beta cells provides protection against the pathogenesis of obesity-induced type 2 diabetes by maintaining pancreatic beta cell function, which ultimately improves whole-body glucose homeostasis.

Indexed as

Endoplasmic Reticulum StressUp-RegulationAnimalsCrosses, GeneticDiabetes Mellitus, Type 2Diet, High-FatEndoplasmic Reticulum Chaperone BiPGlucose Transporter Type 2Heat-Shock ProteinsHyperinsulinismInsulinInsulin ResistanceInsulin-Secreting CellsInsulin SecretionIslets of LangerhansMaleEndoplasmic Reticulum Chaperone BiPGlucose Transporter Type 2Heat-Shock ProteinsHspa5 protein, mouseInsulinSlc2a2 protein, mouse

Identifiers

PMID23475366
OpenAlexW2036377986

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.