Evidence map›Paper›PMID 20622170›Full record

ArticleDiabetes2010

Kinetics of contraction-induced GLUT4 translocation in skeletal muscle fibers from living mice.

Hans P M M Lauritzen, Henrik Galbo, Taro Toyoda, Laurie J Goodyear

Open access · hybridAbstract read
In one paragraph

Article in Diabetes, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
3.4field-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

44 citing papers in PubMed, 77 citations in OpenAlex.

  1. Trial
  2. Exercise increases TBC1D1 phosphorylation in human skeletal muscle.American journal of physiology. Endocrinology and metabolism · 2011
    Trial
  3. Article
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  6. Review
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  8. Article
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  10. Is GLUT4 translocation the answer to exercise-stimulated muscle glucose uptake?American journal of physiology. Endocrinology and metabolism · 2021
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. A Tbc1d1Diabetologia · 2017
    Article
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 at 3 institutions in 2 countries.

Hans P M M LauritzenResearch Division, Joslin Diabetes Center and Harvard Medical School, Boston, Massachusetts, USA.
Henrik Galbo
Taro Toyoda
Laurie J Goodyear
Joslin Diabetes Center · USCopenhagen University Hospital · DKHarvard University · US

Funding

SPECIAL ASSAY COREP30DK036836 · NIDDK · JOSLIN DIABETES CENTER · PI JEAN E. SCHAFFER · 1986 to 2026
$50.5M
EXERCISE REGULATION OF GLUCOSE UPTAKE IN SKELETAL MUSCLER01AR045670 · NIAMS · JOSLIN DIABETES CENTER · PI GOODYEAR, LAURIE J · 1998 to 2012
$4.6M
Regultion of Serine/Threonine Kinases in Skeletal MuscleR01DK068626 · NIDDK · JOSLIN DIABETES CENTER · PI GOODYEAR, LAURIE J · 2004 to 2012
$3.5M
NIAMS NIH HHS R01 AR045670NIAMS NIH HHS R01AR45670NIDDK NIH HHS P30 DK036836NIDDK NIH HHS P30DK036836NIDDK NIH HHS R01 DK068626NIDDK NIH HHS R01DK68626
6 · The paper itself

Abstract

objectiveExercise is an important strategy for the treatment of type 2 diabetes. This is due in part to an increase in glucose transport that occurs in the working skeletal muscles. Glucose transport is regulated by GLUT4 translocation in muscle, but the molecular machinery mediating this process is poorly understood. The purpose of this study was to 1) use a novel imaging system to elucidate the kinetics of contraction-induced GLUT4 translocation in skeletal muscle and 2) determine the function of AMP-activated protein kinase alpha2 (AMPKalpha2) in this process. RESEARCH DESIGN AND

methodsConfocal imaging was used to visualize GLUT4-enhanced green fluorescent protein (EGFP) in transfected quadriceps muscle fibers in living mice subjected to contractions or the AMPK-activator AICAR.

resultsContraction increased GLUT4-EGFP translocation from intracellular vesicle depots to both the sarcolemma and t-tubules with similar kinetics, although translocation was greater with contractions elicited by higher voltage. Re-internalization of GLUT4 did not begin until 10 min after contractions ceased and was not complete until 130 min after contractions. AICAR increased GLUT4-EGFP translocation to both sarcolemma and t-tubules with similar kinetics. Ablation of AMPKalpha2 activity in AMPKalpha2 inactive transgenic mice did not change GLUT4-EGFP's basal localization, contraction-stimulated intracellular GLUT4-EGFP vesicle depletion, translocation, or re-internalization, but diminished AICAR-induced translocation.

conclusionsWe have developed a novel imaging system to study contraction-stimulated GLUT4 translocation in living mice. Contractions increase GLUT4 translocation to the sarcolemma and t-tubules with similar kinetics and do not require AMPKalpha2 activity.

Indexed as

Adenylate KinaseAnimalsGlucose Transporter Type 4Green Fluorescent ProteinsKineticsMaleMiceMice, TransgenicMicrotubulesMuscle Fibers, SkeletalPlasmidsProtein TransportSarcolemmaTransfectionAdenylate KinaseGlucose Transporter Type 4Green Fluorescent Proteins

Identifiers

PMID20622170
PMCPMC2927934
OpenAlexW2162058012

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.