Evidence map›Paper›PMID 24535231›Full record

ArticleDiabetologia2014

Pancreatic duct cells as a source of VEGF in mice.

Xiangwei Xiao, Krishna Prasadan, Ping Guo, Yousef El-Gohary, Shane Fischbach, John Wiersch, Iljana Gaffar, Chiyo Shiota, George K Gittes

Abstract read
In one paragraph

Article in Diabetologia, 2014. 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
16.1field-weighted citation impact, top 1% 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, 83 citations in OpenAlex.

  1. Article
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  5. Role of angiogenesis in beta-cell epithelial-mesenchymal transition in chronic pancreatitis-induced diabetes.Laboratory investigation; a journal of technical methods and pathology · 2022
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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

9 authors at 2 institutions in 1 country.

Xiangwei XiaoDivision of Pediatric Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, 4401 Penn Ave, Pittsburgh, PA, 15224, USA, xiangwei.xiao@chp.edu.
Krishna Prasadan
Ping Guo
Yousef El-Gohary
Shane Fischbach
John Wiersch
Iljana Gaffar
Chiyo Shiota
George K Gittes
Children's Hospital of Pittsburgh · USUniversity of Pittsburgh · US

Funding

Smad Regulation of Pancreatic Islet FormationR01DK083541 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI GITTES, GEORGE K. · 2009 to 2012
$1.4M
Pancreatic Intra-Islet DuctsR01DK098196 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI GITTES, GEORGE K. · 2013 to 2014
$667k
NIDDK NIH HHS R01 DK083541NIDDK NIH HHS R01 DK098196
6 · The paper itself

Abstract

aims/hypothesisVascular endothelial growth factor (VEGF) is essential for proper pancreatic development, islet vascularisation and insulin secretion. In the adult pancreas, VEGF is thought to be predominantly secreted by beta cells. Although human duct cells have previously been shown to secrete VEGF at angiogenic levels in culture, an analysis of the kinetics of VEGF synthesis and secretion, as well as elucidation of an in vivo role for this ductal VEGF in affecting islet function and physiology, has been lacking.

methodsWe analysed purified duct cells independently prepared by flow cytometry, surgical isolation or laser-capture microdissection. We infected duct cells in vivo with Vegf (also known as Vegfa) short hairpin RNA (shRNA) in an intrapancreatic ductal infusion system and examined the effect of VEGF knockdown in duct cells in vitro and in vivo.

resultsPancreatic duct cells express high levels of Vegf mRNA. Compared with beta cells, duct cells had a much higher ratio of secreted to intracellular VEGF. As a bioassay, formation of tubular structures by human umbilical vein endothelial cells was essentially undetectable when cultured alone and was substantially increased when co-cultured with pancreatic duct cells but significantly reduced when co-cultured with duct cells pretreated with Vegf shRNA. Compared with islets transplanted alone, improved vascularisation and function was detected in the islets co-transplanted with duct cells but not in islets co-transplanted with duct cells pretreated with Vegf shRNA. CONCLUSIONS/

interpretationHuman islet preparations for transplantation typically contain some contaminating duct cells and our findings suggest that the presence of duct cells in the islet preparation may improve transplantation outcomes.

Indexed as

AnimalsEpithelial CellsGene Knockdown TechniquesHumansHuman Umbilical Vein Endothelial CellsInsulin-Secreting CellsIslets of LangerhansIslets of Langerhans TransplantationMiceNeovascularization, PhysiologicPancreatic DuctsRNA, Small InterferingSOX9 Transcription FactorVascular Endothelial Growth Factor ARNA, Small InterferingSox9 protein, mouseSOX9 Transcription FactorVascular Endothelial Growth Factor Avascular endothelial growth factor A, mouse

Identifiers

PMID24535231
PMCPMC3986695
OpenAlexW2028679519

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Registered trials

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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.