Evidence map›Paper›PMID 30052866›Full record

ArticleEndocrinology2018

In Vivo Deletion of β-Cell Drp1 Impairs Insulin Secretion Without Affecting Islet Oxygen Consumption.

Thomas G Hennings, Deeksha G Chopra, Elizabeth R DeLeon, Halena R VanDeusen, Hiromi Sesaki, Matthew J Merrins, Gregory M Ku

Open access · bronzeAbstract read
In one paragraph

Article in Endocrinology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
3.8field-weighted citation impact, top 7% 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

30 citing papers in PubMed, 45 citations in OpenAlex.

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  13. Mitochondrial Dynamics and Insulin Secretion.International journal of molecular sciences · 2023
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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 3 institutions in 1 country.

Thomas G HenningsDiabetes Center, University of California, San Francisco, San Francisco, California.
Deeksha G ChopraDiabetes Center, University of California, San Francisco, San Francisco, California.
Elizabeth R DeLeonDepartment of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin.
Halena R VanDeusenDepartment of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin.
Hiromi SesakiDepartment of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Matthew J MerrinsDepartment of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin.
Gregory M KuDiabetes Center, University of California, San Francisco, San Francisco, California.
University of California, San Francisco · USUniversity of Wisconsin–Madison · USJohns Hopkins University · US

Funding

BIOTECHNOLOGY TRAINING PROGRAMT32GM008349 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI FOX, BRIAN G · 1989 to 2019
$22.5M
Research BaseP30DK063720 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GERMAN, MICHAEL S · 2003 to 2019
$21.8M
DIABETES, ENDOCRINOLOGY &METABOLISM TRAINING PROGRAMT32DK007418 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI EDWARD C HSIAO · 1986 to 2026
$14.3M
Metabolic Functions of Pyruvate Kinase M2 in Pancreatic Beta CellsR01DK113103 · NIDDK · YALE UNIVERSITY · PI Matthew J. Merrins · 2017 to 2026
$3.3M
The role of Spry2 in beta cell function and the unfolded protein responseR01DK107650 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KU, GREGORY MICHAEL · 2016 to 2020
$1.8M
Mitochondrial Quality Control by Drp1R01GM123266 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI SESAKI, HIROMI · 2018 to 2021
$1.4M
Discovering and dissecting new regulators of insulin production in beta cellsK08DK087945 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KU, GREGORY MICHAEL · 2011 to 2015
$747k
Application for Administrative Supplement to Existing Award AG050135 to Develop Research on Alzheimer's DiseaseR21AG050135 · NIA · UNIVERSITY OF WISCONSIN-MADISON · PI LAMMING, DUDLEY WILLIAM, MERRINS, MATTHEW J. · 2016 to 2017
$568k
NIA NIH HHS R21 AG050135NIDDK NIH HHS K08 DK087945NIDDK NIH HHS P30 DK063720NIDDK NIH HHS R01 DK107650NIDDK NIH HHS R01 DK113103NIDDK NIH HHS T32 DK007418NIGMS NIH HHS R01 GM123266NIGMS NIH HHS T32 GM008349
6 · The paper itself

Abstract

Mitochondria are dynamic organelles that undergo frequent fission and fusion events. Mitochondrial fission is required for ATP production, the tricarboxylic acid cycle, and processes beyond metabolism in a cell-type specific manner. Ex vivo and cell line studies have demonstrated that Drp1, a central regulator of mitochondrial fission, is required for glucose-stimulated insulin secretion (GSIS) in pancreatic β cells. Herein, we set out to interrogate the role of Drp1 in β-cell insulin secretion in vivo. We generated β-cell-specific Drp1 knockout (KO) mice (Drp1β-KO) by crossing a conditional allele of Drp1 to Ins1cre mice, in which Cre recombinase replaces the coding region of the Ins1 gene. Drp1β-KO mice were glucose intolerant due to impaired GSIS but did not progress to fasting hyperglycemia as adults. Despite markedly abnormal mitochondrial morphology, Drp1β-KO islets exhibited normal oxygen consumption rates and an unchanged glucose threshold for intracellular calcium mobilization. Instead, the most profound consequences of β-cell Drp1 deletion were impaired second-phase insulin secretion and impaired glucose-stimulated amplification of insulin secretion. Our data establish Drp1 as an important regulator of insulin secretion in vivo and demonstrate a role for Drp1 in metabolic amplification and calcium handling without affecting oxygen consumption.

Indexed as

AnimalsCalciumDynaminsFastingGlucose IntoleranceHyperglycemiaInsulin-Secreting CellsInsulin SecretionIslets of LangerhansMiceMice, KnockoutMitochondriaMitochondrial DynamicsOxygen ConsumptionCalciumDnm1l protein, mouseDynamins

Identifiers

PMID30052866
PMCPMC6107751
OpenAlexW2884598713

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.