Evidence map›Paper›PMID 32278655›Full record

ArticleMolecular metabolism2020

Intestine-selective reduction of Gcg expression reveals the importance of the distal gut for GLP-1 secretion.

Brandon L Panaro, Bernardo Yusta, Dianne Matthews, Jacqueline A Koehler, Youngmi Song, Darleen A Sandoval, Daniel J Drucker

Open access · goldAbstract read
In one paragraph

Article in Molecular metabolism, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
5.8field-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

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 61 citations in OpenAlex.

  1. Pooled it
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  4. bioRxiv : the preprint server for biology · 2026
    Article
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  7. Incretin hormones and obesity.The Journal of physiology · 2025
    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 2 institutions in 2 countries.

Brandon L PanaroDepartment of Medicine and the Lunenfeld-Tanenbaum Research Institute, Mt. Sinai Hospital, University of Toronto, Toronto, Ontario, Canada. Electronic address: drucker@lunenfeld.ca.
Bernardo YustaDepartment of Medicine and the Lunenfeld-Tanenbaum Research Institute, Mt. Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.
Dianne MatthewsDepartment of Medicine and the Lunenfeld-Tanenbaum Research Institute, Mt. Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.
Jacqueline A KoehlerDepartment of Medicine and the Lunenfeld-Tanenbaum Research Institute, Mt. Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.
Youngmi SongDepartment of Medicine and the Lunenfeld-Tanenbaum Research Institute, Mt. Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.
Darleen A SandovalDepartment of Surgery, University of Michigan, Ann Arbor, MI, USA.
Daniel J DruckerDepartment of Medicine and the Lunenfeld-Tanenbaum Research Institute, Mt. Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.
University of Toronto · CAUniversity of Michigan · US

Funding

Regional Pilot And Feasibility Study Grants ProgramP30DK020572 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Mehboob A Hussain · 2013 to 2026
$24.3M
CIHR 154321NIDDK NIH HHS P30 DK020572
6 · The paper itself

Abstract

objectiveGlucagon-like peptide-1 is a nutrient-sensitive hormone secreted from enteroendocrine L cells within the small and large bowel. Although GLP-1 levels rise rapidly in response to food ingestion, the greatest density of L cells is localized to the distal small bowel and colon. Here, we assessed the importance of the distal gut in the acute L cell response to diverse secretagogues.

methodsCirculating levels of glucose and plasma GLP-1 were measured in response to the administration of L cell secretagogues in wild-type mice and in mice with (1) genetic reduction of Gcg expression throughout the small bowel and large bowel (Gcg

resultsThe acute GLP-1 response to olive oil or arginine administration was markedly diminished in Gcg

conclusionThese findings further establish the importance of the proximal gut for the acute response to nutrient-related GLP-1 secretagogues. In contrast, we identify essential contributions of the distal gut to (i) the rapid induction of circulating GLP-1 levels in response to pharmacological selective agonism of G-protein-coupled receptors, (ii) the increased GLP-1 levels following the activation of Toll-Like Receptors with LPS, and iii) the acute GLP-1 response to metformin. Collectively, these results reveal that distal gut Gcg + endocrine cells are rapid responders to structurally and functionally diverse GLP-1 secretagogues.

Indexed as

AnimalsBlood GlucoseColonEnteroendocrine CellsFemaleGene ExpressionGene Expression RegulationGlucagonGlucagon-Like Peptide 1Glucagon-Like Peptide-2 ReceptorGlucoseInsulinIntestine, SmallMaleMetforminMiceBlood GlucoseGlucagonGlucagon-Like Peptide 1Glucagon-Like Peptide-2 ReceptorGlucoseInsulinMetforminProglucagonDiabetesInflammationIntestineMetforminObesityPancreasPeptides

Identifiers

PMID32278655
PMCPMC7200938
OpenAlexW3015942754

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.