Evidence map›Paper›PMID 18805925›Full record

ArticleBiophysical journal2008

Gap junction coupling and calcium waves in the pancreatic islet.

Richard K P Benninger, Min Zhang, W Steven Head, Leslie S Satin, David W Piston

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 150 papers.

0numbers the graph read from it
0cells of the map it votes in
150citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

150 citing papers in PubMed, 246 citations in OpenAlex.

  1. Review
  2. Article
  3. GABA Regulates CaMetabolites · 2026
    Article
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  12. Review
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90 more citing papers are in PubMed but not listed here.

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 3 institutions in 1 country.

Richard K P BenningerMolecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA. richard.benninger@vanderbilt.edu
Min Zhang
W Steven Head
Leslie S Satin
David W Piston
Vanderbilt University · USUniversity of Michigan–Ann Arbor · USVirginia Commonwealth University · US

Funding

METABOLICALLY-COUPLED ION CHANNEL INTERACTIONS IN ISLETSR01DK046409 · NIDDK · VIRGINIA COMMONWEALTH UNIVERSITY · PI SATIN, LESLIE S. · 1994 to 2023
$9.1M
DYNAMICS OF PANCREATIC ISLET FUNCTIONR01DK053434 · NIDDK · VANDERBILT UNIVERSITY · PI PISTON, DAVID W · 1998 to 2010
$3.1M
Probes:Quantitative Optical and Electron Microscopy(RMI)P20GM072048 · NIGMS · VANDERBILT UNIVERSITY · PI PISTON, DAVID W. · 2004 to 2007
$2.7M
NIDDK NIH HHS R01 DK046409NIDDK NIH HHS R01 DK053434NIDDK NIH HHS R01 DK46409NIDDK NIH HHS R01-DK53434NIGMS NIH HHS P20 GM072048NIGMS NIH HHS P20-GM72048
6 · The paper itself

Abstract

The pancreatic islet is a highly coupled, multicellular system that exhibits complex spatiotemporal electrical activity in response to elevated glucose levels. The emergent properties of islets, which differ from those arising in isolated islet cells, are believed to arise in part by gap junctional coupling, but the mechanisms through which this coupling occurs are poorly understood. To uncover these mechanisms, we have used both high-speed imaging and theoretical modeling of the electrical activity in pancreatic islets under a reduction in the gap junction mediated electrical coupling. Utilizing islets from a gap junction protein connexin 36 knockout mouse model together with chemical inhibitors, we can modulate the electrical coupling in the islet in a precise manner and quantify this modulation by electrophysiology measurements. We find that after a reduction in electrical coupling, calcium waves are slowed as well as disrupted, and the number of cells showing synchronous calcium oscillations is reduced. This behavior can be reproduced by computational modeling of a heterogeneous population of beta-cells with heterogeneous levels of electrical coupling. The resulting quantitative agreement between the data and analytical models of islet connectivity, using only a single free parameter, reveals the mechanistic underpinnings of the multicellular behavior of the islet.

Indexed as

Calcium SignalingAnimalsCalciumCattleElectricityGap JunctionsGene Knockout TechniquesInsulin-Secreting CellsIslets of LangerhansMiceModels, BiologicalCalcium

Identifiers

PMID18805925
PMCPMC2586567
OpenAlexW2062783006

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.