Evidence map›Paper›PMID 24510483›Full record

ArticleDiabetes/metabolism research and reviews2014

Progressive change of intra-islet GLP-1 production during diabetes development.

Thomas J O'Malley, Genevieve E Fava, Yanqing Zhang, Vivian A Fonseca, Hongju Wu

Abstract readComparative Study
In one paragraph

Article in Diabetes/metabolism research and reviews, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
4.1field-weighted citation impact, top 7% 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

27 citing papers in PubMed, 47 citations in OpenAlex.

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  20. Effects of Linagliptin on PancreaticJournal of the Endocrine Society · 2017
    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.

Thomas J O'MalleyEndocrinology Section, Department of Medicine, Tulane University Health Science Center, New Orleans, LA, United States.
Genevieve E Fava
Yanqing Zhang
Vivian A Fonseca
Hongju Wu
Tulane University · US

Funding

Translational Research in Hypertension and Renal BiologyP30GM103337 · NIGMS · TULANE UNIVERSITY OF LOUISIANA · PI NAVAR, LUIS GABRIEL · 2012 to 2016
$5.8M
Improving Islet Transplantation Outcome With Akt1R01DK081463 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI WU, HONGJU · 2009 to 2013
$1.6M
NIDDK NIH HHS R01 DK081463NIDDK NIH HHS R01DK081463NIGMS NIH HHS P30 GM103337
6 · The paper itself

Abstract

backgroundGlucagon-like peptide 1 (GLP-1) and glucagon share the same precursor molecule proglucagon, but each arises from a distinct posttranslational process in a tissue-specific manner. Recently, it has been shown that GLP-1 is co-expressed with glucagon in pancreatic islet cells. This study was aimed to investigate the progressive changes of GLP-1 versus glucagon production in pancreatic islets during the course of diabetes development.

methodsBoth type 1 (non-obese diabetes mice) and type 2 (db/db mice) diabetes models were employed in this study. The mice were monitored closely for their diabetes progression and were sacrificed at different stages according to their blood glucose levels. GLP-1 and glucagon expression in the pancreatic islets was examined using immunohistochemistry assays. Quantitative analysis was performed to evaluate the significance of the changes.

resultsThe ratio of GLP-1-expressing cells to glucagon-expressing cells in the islets showed significant, progressive increase with the development of diabetes in db/db mice. The increase of GLP-1 expression was in agreement with the upregulation of PC1/3 expression in these cells. Interestingly, intra-islet GLP-1 expression was not significantly changed during the development of type 1 diabetes in non-obese diabetes mice.

conclusionsThe study demonstrated that GLP-1 was progressively upregulated in pancreatic islets during type 2 diabetes development. In addition, the data suggest clear differences in intra-islet GLP-1 production between type 1 and type 2 diabetes developments. These differences may have an effect on the clinical and pathophysiological processes of these diseases and may be a target for therapeutic approaches.

Indexed as

AlgorithmsAnimalsDiabetes Mellitus, Type 1Diabetes Mellitus, Type 2Disease ProgressionFemaleGlucagonGlucagon-Like Peptide 1Glucagon-Secreting CellsImmunohistochemistryIslets of LangerhansMaleMice, Inbred C57BLMice, Inbred NODMice, Mutant StrainsPrediabetic StateGlucagonGlucagon-Like Peptide 1Pcsk1 protein, mouseProprotein Convertase 1diabetesGLP-1isletsα-cells

Identifiers

PMID24510483
PMCPMC4126896
OpenAlexW1533939474

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.