Evidence map›Paper›PMID 22382520›Full record

ArticleDiabetologia2012

Carbohydrate response element-binding protein (ChREBP) plays a pivotal role in beta cell glucotoxicity.

N Poungvarin, J K Lee, V K Yechoor, M V Li, T Assavapokee, P Suksaranjit, J J Thepsongwajja, P K Saha, K Oka, L Chan

Open access · bronzeAbstract read
In one paragraph

Article in Diabetologia, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
7.3field-weighted citation impact, top 3% 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

54 citing papers in PubMed, 82 citations in OpenAlex.

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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

10 authors at 2 institutions in 1 country.

N PoungvarinDepartment of Medicine, Baylor College of Medicine, One Baylor Plaza, R614, Houston, TX 77030, USA.
J K Lee
V K Yechoor
M V Li
T Assavapokee
P Suksaranjit
J J Thepsongwajja
P K Saha
K Oka
L Chan
Baylor College of Medicine · USSt. Luke's Episcopal Hospital · US

Funding

Diabetes Endocrinology Research CenterP30DK079638 · NIDDK · BAYLOR COLLEGE OF MEDICINE · PI CHAN, LAWRENCE · 2008 to 2012
$6.4M
MODELS FOR ATHEROSCLEROSIS RESEARCHR01HL051586 · NHLBI · BAYLOR COLLEGE OF MEDICINE · PI CHAN, LAWRENCE · 1994 to 2014
$5.5M
NHLBI NIH HHS HL R01-51586NHLBI NIH HHS R01 HL051586NIDDK NIH HHS P30 DK079638NIDDK NIH HHS P30-DK079638
6 · The paper itself

Abstract

aims/hypothesisThis study was aimed at the elucidation of the pathogenesis of glucotoxicity, i.e. the mechanism whereby hyperglycaemia damages pancreatic beta cells. The identification of pathways in the process may help identify targets for beta cell-protective therapy. Carbohydrate response element-binding protein (ChREBP), a transcription factor that regulates the expression of multiple hyperglycaemia-induced genes, is produced in abundance in pancreatic beta cells. We hypothesise that ChREBP plays a pivotal role in mediating beta cell glucotoxicity.

methodsWe assessed the role of ChREBP in glucotoxicity in 832/13 beta cells, isolated mouse islets and human pancreas tissue sections using multiple complementary approaches under control and high-glucose-challenge conditions as well as in adeno-associated virus-induced beta cell-specific overexpression of Chrebp (also known as Mlxipl) in mice.

resultsUnder both in vitro and in vivo conditions, ChREBP activates downstream target genes, including fatty acid synthase and thioredoxin-interacting protein, leading to lipid accumulation, increased oxidative stress, reduced insulin gene transcription/secretion and enhanced caspase activity and apoptosis, processes that collectively define glucotoxicity. Immunoreactive ChREBP is enriched in the nucleuses of beta cells in pancreatic tissue sections from diabetic individuals compared with non-diabetic individuals. Finally, we demonstrate that induced beta cell-specific Chrebp overexpression is sufficient to phenocopy the glucotoxicity manifestations of hyperglycaemia in mice in vivo. CONCLUSIONS/

interpretationThese data indicate that ChREBP is a key transcription factor that mediates many of the hyperglycaemia-induced activations in a gene expression programme that underlies beta cell glucotoxicity at the molecular, cellular and whole animal levels.

Indexed as

AnimalsApoptosisBasic Helix-Loop-Helix Leucine Zipper Transcription FactorsCell LineGlucoseGlucose Tolerance TestHumansInsulin-Secreting CellsIslets of LangerhansLaser Capture MicrodissectionMiceMice, Inbred C57BLNuclear ProteinsRNA, Small InterferingTranscription FactorsBasic Helix-Loop-Helix Leucine Zipper Transcription FactorsGlucoseMlxipl protein, mouseNuclear ProteinsRNA, Small InterferingTranscription Factors

Identifiers

PMID22382520
PMCPMC4010252
OpenAlexW2102763753

What OpenQuestion holds

Textmetadata
LicenceTDM
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.