Evidence map›Paper›PMID 26840733›Full record

ArticleBiophysical journal2016

Phase Analysis of Metabolic Oscillations and Membrane Potential in Pancreatic Islet β-Cells.

Matthew J Merrins, Chetan Poudel, Joseph P McKenna, Joon Ha, Arthur Sherman, Richard Bertram, Leslie S Satin

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
7.2field-weighted citation impact, top 3% 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

47 citing papers in PubMed, 70 citations in OpenAlex.

  1. Trial
  2. Article
  3. Are physiological oscillations physiological?The Journal of physiology · 2026
    Review
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  15. KThe Journal of physiology · 2023
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  18. 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

7 authors at 4 institutions in 1 country.

Matthew J MerrinsDivision of Endocrinology, Diabetes & Metabolism, Department of Medicine and Department of Biomolecular Chemistry, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin; William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin.
Chetan PoudelDivision of Endocrinology, Diabetes & Metabolism, Department of Medicine and Department of Biomolecular Chemistry, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin; William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin.
Joseph P McKennaDepartment of Mathematics and Programs in Neuroscience and Molecular Biophysics, Florida State University, Tallahassee, Florida.
Joon HaLaboratory of Biological Modeling, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland.
Arthur ShermanLaboratory of Biological Modeling, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland.
Richard BertramDepartment of Mathematics and Programs in Neuroscience and Molecular Biophysics, Florida State University, Tallahassee, Florida.
Leslie S SatinDepartment of Pharmacology and Brehm Diabetes Center, University of Michigan, Ann Arbor, Michigan. Electronic address: lsatin@umich.edu.
Florida State University · USNational Institutes of Health · USUniversity of Wisconsin–Madison · USUniversity of Michigan · US

Funding

Regional Pilot And Feasibility Study Grants ProgramP30DK020572 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Scott Soleimanpour · 2013 to 2026
$24.3M
METABOLICALLY-COUPLED ION CHANNEL INTERACTIONS IN ISLETSR01DK046409 · NIDDK · VIRGINIA COMMONWEALTH UNIVERSITY · PI SATIN, LESLIE S. · 1994 to 2023
$9.1M
Stimulus secretion coupling in pancreatic beta-cellsZIADK013027 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI SHERMAN, ARTHUR · 2009 to 2025
$3.6M
Cyclin-Dependant Kinase 2 (CDK2) Function in Pancreatic Beta-CellsK01DK101683 · NIDDK · UNIVERSITY OF WISCONSIN-MADISON · PI MERRINS, MATTHEW J. · 2014 to 2016
$426k
Intramural NIH HHSNIDDK NIH HHS K01 DK101683NIDDK NIH HHS K01-DK101683NIDDK NIH HHS P30 DK020572NIDDK NIH HHS R01 DK046409
6 · The paper itself

Abstract

Metabolism in islet β-cells displays oscillations that can trigger pulses of electrical activity and insulin secretion. There has been a decades-long debate among islet biologists about whether metabolic oscillations are intrinsic or occur in response to oscillations in intracellular Ca(2+) that result from bursting electrical activity. In this article, the dynamics of oscillatory metabolism were investigated using five different optical reporters. Reporter activity was measured simultaneously with membrane potential bursting to determine the phase relationships between the metabolic oscillations and electrical activity. Our experimental findings suggest that Ca(2+) entry into β-cells stimulates the rate of mitochondrial metabolism, accounting for the depletion of glycolytic intermediates during each oscillatory burst. We also performed Ca(2+) clamp tests in which we clamped membrane potential with the KATP channel-opener diazoxide and KCl to fix Ca(2+) at an elevated level. These tests confirm that metabolic oscillations do not require Ca(2+) oscillations, but show that Ca(2+) plays a larger role in shaping metabolic oscillations than previously suspected. A dynamical picture of the mechanisms of oscillations emerged that requires the restructuring of contemporary mathematical β-cell models, including our own dual oscillator model. In the companion article, we modified our model to account for these new data.

Indexed as

Calcium SignalingMembrane PotentialsAnimalsCells, CulturedInsulin-Secreting CellsKATP ChannelsMiceKATP Channels

Identifiers

PMID26840733
PMCPMC4744170
OpenAlexW2264119991

What Socratic 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 Socratic graph.