Evidence map›Paper›PMID 33177640›Full record

ArticleScientific reports2020

FGF21 signaling in glutamatergic neurons is required for weight loss associated with dietary protein dilution.

Kyle H Flippo, Sharon O Jensen-Cody, Kristin E Claflin, Matthew J Potthoff

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 9% 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, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

  1. Liver Brain Interactions: Focus on FGF21 a Systematic Review.International journal of molecular sciences · 2022
    Pooled it
  2. Meal sugar-protein balance determines postprandial FGF21 response in humans.American journal of physiology. Endocrinology and metabolism · 2023
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  13. A combination ofFood & nutrition research · 2024
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  14. Protein appetite as an integrator in the obesity system: the protein leverage hypothesis.Philosophical transactions of the Royal Society of London. Series B, Biological 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

4 authors at 2 institutions in 1 country.

Kyle H Flippo *Department of Neuroscience and Pharmacology, University of Iowa Carver College of Medicine, 169 Newton Road, 3322 PBDB, Iowa City, IA, 52242, USA.
Sharon O Jensen-Cody *Department of Neuroscience and Pharmacology, University of Iowa Carver College of Medicine, 169 Newton Road, 3322 PBDB, Iowa City, IA, 52242, USA.
Kristin E ClaflinDepartment of Neuroscience and Pharmacology, University of Iowa Carver College of Medicine, 169 Newton Road, 3322 PBDB, Iowa City, IA, 52242, USA.
Matthew J PotthoffDepartment of Neuroscience and Pharmacology, University of Iowa Carver College of Medicine, 169 Newton Road, 3322 PBDB, Iowa City, IA, 52242, USA. matthew-potthoff@uiowa.edu.
Fraternal Order of Eagles · USUniversity of Iowa · US

Funding

Vector Core-Core 2P30DK054759 · NIDDK · UNIVERSITY OF IOWA · PI Alejandro Antonio Pezzulo · 1998 to 2026
$30.5M
Regulation of Metabolism by FGF21R01DK106104 · NIDDK · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI Matthew Joseph Potthoff · 2015 to 2026
$6.2M
Diabetes Research Training Program Diversity SupplementT32DK112751 · NIDDK · UNIVERSITY OF IOWA · PI Andrew W Norris · 2017 to 2026
$4.8M
Endocrine Regulation of Alcohol IntakeR01AA027654 · NIAAA · UNIVERSITY OF IOWA · PI POTTHOFF, MATTHEW JOSEPH · 2020 to 2024
$2.6M
Fatty Acid Defects & Oxidative Stress Modulate Islet Function in Cystic FibrosisR01DK097820 · NIDDK · UNIVERSITY OF IOWA · PI NORRIS, ANDREW W, UC, ALIYE · 2012 to 2016
$1.9M
Identification of a novel neural circuit regulating energy expenditure and glucose homeostasisF32DK117510 · NIDDK · UNIVERSITY OF IOWA · PI CLAFLIN, KRISTIN · 2018 to 2019
$85k
Novel Endocrine Circuit Regulating Sugar SatietyF31DK117515 · NIDDK · UNIVERSITY OF IOWA · PI IDIGA, SHARON · 2018 to 2020
$63k
Central Mechanisms Regulating Macronutrient IntakeI01BX004634 · VA · OKLAHOMA CITY VA MEDICAL CENTER · PI Matthew Joseph Potthoff · 2019 to 2026
–
BLRD VA I01 BX004634NIAAA NIH HHS R01 AA027654NIDDK NIH HHS F31 DK117515NIDDK NIH HHS F32 DK117510NIDDK NIH HHS P30 DK054759NIDDK NIH HHS R01 DK097820NIDDK NIH HHS R01 DK106104NIDDK NIH HHS T32 DK112751NIH HHS DK117510NIH HHS DK117515NIH HHS R01DK106104NIH HHS T32 DK112751
6 · The paper itself

Abstract

Alterations in macronutrient intake can have profound effects on energy intake and whole-body metabolism. For example, reducing protein intake increases energy expenditure, increases insulin sensitivity and decreases body weight in rodents. Fibroblast growth factor 21 (FGF21) signaling in the brain is necessary for the metabolic effects of dietary protein restriction and has more recently been proposed to promote protein preference. However, the neuron populations through which FGF21 elicits these effects are unknown. Here, we demonstrate that deletion of β-klotho in glutamatergic, but not GABAergic, neurons abrogated the effects of dietary protein restriction on reducing body weight, but not on improving insulin sensitivity in both diet-induced obese and lean mice. Specifically, FGF21 signaling in glutamatergic neurons is necessary for protection against body weight gain and induction of UCP1 in adipose tissues associated with dietary protein restriction. However, β-klotho expression in glutamatergic neurons was dispensable for the effects of dietary protein restriction to increase insulin sensitivity. In addition, we report that FGF21 administration does not alter protein preference, but instead promotes the foraging of other macronutrients primarily by suppressing simple sugar consumption. This work provides important new insights into the neural substrates and mechanisms behind the endocrine control of metabolism during dietary protein dilution.

Indexed as

AnimalsDietary ProteinsDiet, Protein-RestrictedDiet, ReducingFibroblast Growth FactorsGABAergic NeuronsInsulin ResistanceKlotho ProteinsMaleMembrane ProteinsMice, Inbred C57BLMice, KnockoutNeuronsObesitySignal TransductionSucroseDietary Proteinsfibroblast growth factor 21Fibroblast Growth FactorsKlb protein, mouseKlotho ProteinsMembrane ProteinsSlc17a6 protein, mouseSucroseVesicular Glutamate Transport Protein 2Vesicular Inhibitory Amino Acid Transport ProteinsViaat protein, mouse

Identifiers

PMID33177640
PMCPMC7658965
OpenAlexW3098645453

What OpenQuestion holds

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LicenceCC BY
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.