Evidence map›Paper›PMID 25299671›Full record

ArticlePloS one2014

GLUT4 defects in adipose tissue are early signs of metabolic alterations in Alms1GT/GT, a mouse model for obesity and insulin resistance.

Francesca Favaretto, Gabriella Milan, Gayle B Collin, Jan D Marshall, Fabio Stasi, Pietro Maffei, Roberto Vettor, Jürgen K Naggert

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 6% 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

39 citing papers in PubMed, 1 synthesis or guideline pooled it, 86 citations in OpenAlex.

  1. Pooled it
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  16. ALMS1 Regulates TGF-β Signaling and Morphology of Primary Cilia.Frontiers in cell and developmental biology · 2021
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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

8 authors at 2 institutions in 2 countries.

Francesca FavarettoDepartment of Medicine, University of Padua, Padua, Italy.
Gabriella MilanDepartment of Medicine, University of Padua, Padua, Italy.
Gayle B CollinThe Jackson Laboratory, Bar Harbor, Maine, United States of America.
Jan D MarshallThe Jackson Laboratory, Bar Harbor, Maine, United States of America.
Fabio StasiDepartment of Medicine, University of Padua, Padua, Italy.
Pietro MaffeiDepartment of Medicine, University of Padua, Padua, Italy.
Roberto VettorDepartment of Medicine, University of Padua, Padua, Italy.
Jürgen K NaggertThe Jackson Laboratory, Bar Harbor, Maine, United States of America.
University of Padua · ITJackson Laboratory · US

Funding

MOLECULAR GENETIC CHARACTERIZATION OF ALSTROM SYNDROMER01HD036878 · NICHD · JACKSON LABORATORY · PI NAGGERT, JUERGEN K. · 1998 to 2011
$4.2M
NICHD NIH HHS HD036878NICHD NIH HHS R01 HD036878
6 · The paper itself

Abstract

Dysregulation of signaling pathways in adipose tissue leading to insulin resistance can contribute to the development of obesity-related metabolic disorders. Alström Syndrome, a recessive ciliopathy, caused by mutations in ALMS1, is characterized by progressive metabolic alterations such as childhood obesity, hyperinsulinemia, and type 2 diabetes. Here we investigated the role of Alms1 disruption in AT expansion and insulin responsiveness in a murine model for Alström Syndrome. A gene trap insertion in Alms1 on the insulin sensitive C57BL6/Ei genetic background leads to early hyperinsulinemia and a progressive increase in body weight. At 6 weeks of age, before the onset of the metabolic disease, the mutant mice had enlarged fat depots with hypertrophic adipocytes, but without signs of inflammation. Expression of lipogenic enzymes was increased. Pre-adipocytes isolated from mutant animals demonstrated normal adipogenic differentiation but gave rise to mature adipocytes with reduced insulin-stimulated glucose uptake. Assessment of whole body glucose homeostasis revealed glucose intolerance. Insulin stimulation resulted in proper AKT phosphorylation in adipose tissue. However, the total amount of glucose transporter 4 (SLC4A2) and its translocation to the plasma membrane were reduced in mutant adipose depots compared to wildtype littermates. Alterations in insulin stimulated trafficking of glucose transporter 4 are an early sign of metabolic dysfunction in Alström mutant mice, providing a possible explanation for the reduced glucose uptake and the compensatory hyperinsulinemia. The metabolic signaling deficits either reside downstream or are independent of AKT activation and suggest a role for ALMS1 in GLUT4 trafficking. Alström mutant mice represent an interesting model for the development of metabolic disease in which adipose tissue with a reduced glucose uptake can expand by de novo lipogenesis to an obese state.

Indexed as

AdipocytesAdipogenesisAdipose TissueAlstrom SyndromeAnimalsBiological TransportBody WeightCell Cycle ProteinsChloride-Bicarbonate AntiportersDisease Models, AnimalDNA-Binding ProteinsGene Expression RegulationGlucoseGlucose IntoleranceHumansHyperinsulinismAlms1 protein, mouseCell Cycle ProteinsChloride-Bicarbonate AntiportersDNA-Binding ProteinsGlucoseInsulinSlc4a2 protein, mouse

Identifiers

PMID25299671
PMCPMC4192353
OpenAlexW2050429205

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LicenceCC BY
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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.