Evidence map›Paper›PMID 19213846›Full record

ArticleEndocrinology2009

Impaired insulin exocytosis in neural cell adhesion molecule-/- mice due to defective reorganization of the submembrane F-actin network.

Charlotta S Olofsson, Joakim Håkansson, Albert Salehi, Martin Bengtsson, Juris Galvanovskis, Chris Partridge, Maria SörhedeWinzell, Xiaojie Xian, Lena Eliasson, Ingmar Lundquist and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Endocrinology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.7field-weighted citation impact, top 5% 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

24 citing papers in PubMed, 43 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

12 authors at 4 institutions in 2 countries.

Charlotta S OlofssonLund University Diabetes Centre, Clinical Research Centre, SE20502 Malmö, Sweden. charlotta.olofsson@physiol.gu.se
Joakim Håkansson
Albert Salehi
Martin Bengtsson
Juris Galvanovskis
Chris Partridge
Maria SörhedeWinzell
Xiaojie Xian
Lena Eliasson
Ingmar Lundquist
Henrik Semb
Patrik Rorsman
Lund University · SEChurchill Hospital · GBOxford Centre for Diabetes, Endocrinology and Metabolism · GBUniversity of Gothenburg · SE

Funding

Wellcome Trust 084655
6 · The paper itself

Abstract

The neural cell adhesion molecule (NCAM) is required for cell type segregation during pancreatic islet organogenesis. We have investigated the functional consequences of ablating NCAM on pancreatic beta-cell function. In vivo, NCAM(-/-) mice exhibit impaired glucose tolerance and basal hyperinsulinemia. Insulin secretion from isolated NCAM(-/-) islets is enhanced at glucose concentrations below 15 mM but inhibited at higher concentrations. Glucagon secretion from pancreatic alpha-cells evoked by low glucose was also severely impaired in NCAM(-/-) islets. The diminution of insulin secretion is not attributable to defective glucose metabolism or glucose sensing (documented as glucose-induced changes in intracellular Ca(2+) and K(ATP)-channel activity). Resting K(ATP) conductance was lower in NCAM(-/-) beta-cells than wild-type cells, and this difference was abolished when F-actin was disrupted by cytochalasin D (1 muM). In wild-type beta-cells, the submembrane actin network disassembles within 10 min during glucose stimulation (30 mM), an effect not seen in NCAM(-/-) beta-cells. Cytochalasin D eliminated this difference and normalized insulin and glucagon secretion in NCAM(-/-) islets. Capacitance measurements of exocytosis indicate that replenishment of the readily releasable granule pool is suppressed in NCAM(-/-) alpha- and beta-cells. Our data suggest that remodeling of the submembrane actin network is critical to normal glucose regulation of both insulin and glucagon secretion.

Indexed as

ActinsAdenosine TriphosphateAnimalsExocytosisFemaleGlucagonGlucoseGlucose IntoleranceInsulinInsulin SecretionIslets of LangerhansMiceMice, KnockoutNeural Cell Adhesion MoleculesPatch-Clamp TechniquesPotassium Channels, Inwardly RectifyingActinsAdenosine TriphosphateGlucagonGlucoseInsulinNeural Cell Adhesion MoleculesPotassium Channels, Inwardly Rectifying

Identifiers

PMID19213846
PMCPMC2703535
OpenAlexW2025661071

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.