Evidence map›Paper›PMID 23823221›Full record

ArticleBiophysical journal2013

Complex patterns of metabolic and Ca²⁺ entrainment in pancreatic islets by oscillatory glucose.

Morten Gram Pedersen, Erik Mosekilde, Kenneth S Polonsky, Dan S Luciani

Abstract read
In one paragraph

Article in Biophysical journal, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
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

22 citing papers in PubMed.

  1. Trial
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  3. CaAmerican journal of physiology. Endocrinology and metabolism · 2023
    Review
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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

4 authors.

Morten Gram PedersenDepartment of Information Engineering, University of Padua, Padua, Italy.
Erik Mosekilde
Kenneth S Polonsky
Dan S Luciani

Funding

THE REGULATION OF HEPATIC INSULIN EXTRACTIONR01DK031842 · NIDDK · WASHINGTON UNIVERSITY · PI POLONSKY, KENNETH S · 1986 to 2013
$4.4M
REGULATION OF HEPATIC INSULIN EXTRACTIONR37DK031842 · NIDDK · WASHINGTON UNIVERSITY · PI POLONSKY, KENNETH S · 1997 to 2005
$2.0M
CIHR MOP-119537NIDDK NIH HHS DK31842NIDDK NIH HHS R01 DK031842NIDDK NIH HHS R37 DK031842
6 · The paper itself

Abstract

Glucose-stimulated insulin secretion is pulsatile and driven by intrinsic oscillations in metabolism, electrical activity, and Ca(2+) in pancreatic islets. Periodic variations in glucose can entrain islet Ca(2+) and insulin secretion, possibly promoting interislet synchronization. Here, we used fluorescence microscopy to demonstrate that glucose oscillations can induce distinct 1:1 and 1:2 entrainment of oscillations (one and two oscillations for each period of exogenous stimulus, respectively) in islet Ca(2+), NAD(P)H, and mitochondrial membrane potential. To our knowledge, this is the first demonstration of metabolic entrainment in islets, and we found that entrainment of metabolic oscillations requires voltage-gated Ca(2+) influx. We identified diverse patterns of 1:2 entrainment and showed that islet synchronization during entrainment involves adjustments of both oscillatory phase and period. All experimental findings could be recapitulated by our recently developed mathematical model, and simulations suggested that interislet variability in 1:2 entrainment patterns reflects differences in their glucose sensitivity. Finally, our simulations and recordings showed that a heterogeneous group of islets synchronized during 1:2 entrainment, resulting in a clear oscillatory response from the collective. In summary, we demonstrate that oscillatory glucose can induce complex modes of entrainment of metabolically driven oscillations in islets, and provide additional support for the notion that entrainment promotes interislet synchrony in the pancreas.

Indexed as

AnimalsCalciumGlucoseIslets of LangerhansMaleMiceMice, Inbred C57BLMicroscopy, FluorescenceCalciumGlucose

Identifiers

PMID23823221
PMCPMC3699738

What OpenQuestion holds

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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.