Evidence map›Paper›PMID 32446875›Full record

ArticleMolecular metabolism2020

PPG neurons in the nucleus of the solitary tract modulate heart rate but do not mediate GLP-1 receptor agonist-induced tachycardia in mice.

Marie K Holt, Daniel R Cook, Daniel I Brierley, James E Richards, Frank Reimann, Alexander V Gourine, Nephtali Marina, Stefan Trapp

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 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

24 citing papers in PubMed, 33 citations in OpenAlex.

  1. Future GLP-1 receptor co-agonists and their cardiac effects.Naunyn-Schmiedeberg's archives of pharmacology · 2026
    Article
  2. Comment on "The effects of glucagon-like peptide-1 receptor agonists on sympathetic neuron activity".Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  3. The effects of glucagon-like peptide-1 receptor agonists on sympathetic neuron activity.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
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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 3 institutions in 2 countries.

Marie K HoltCentre for Cardiovascular and Metabolic Neuroscience, Department of Neuroscience, Physiology & Pharmacology, UCL, London, UK.
Daniel R CookCentre for Cardiovascular and Metabolic Neuroscience, Department of Neuroscience, Physiology & Pharmacology, UCL, London, UK.
Daniel I BrierleyCentre for Cardiovascular and Metabolic Neuroscience, Department of Neuroscience, Physiology & Pharmacology, UCL, London, UK.
James E RichardsCentre for Cardiovascular and Metabolic Neuroscience, Department of Neuroscience, Physiology & Pharmacology, UCL, London, UK.
Frank ReimannWellcome Trust/MRC Institute of Metabolic Science (IMS), Addenbrookes Hospital, University of Cambridge, Cambridge, UK.
Alexander V GourineCentre for Cardiovascular and Metabolic Neuroscience, Department of Neuroscience, Physiology & Pharmacology, UCL, London, UK.
Nephtali MarinaCentre for Cardiovascular and Metabolic Neuroscience, Department of Neuroscience, Physiology & Pharmacology, UCL, London, UK. Electronic address: n.marina@ucl.ac.uk.
Stefan TrappCentre for Cardiovascular and Metabolic Neuroscience, Department of Neuroscience, Physiology & Pharmacology, UCL, London, UK. Electronic address: s.trapp@ucl.ac.uk.
University College London · GBCenter for Neurosciences · USUniversity of Cambridge · GB

Funding

British Heart Foundation FS/14/43/30960Medical Research Council MC_UU_00014/3Medical Research Council MC_UU_12012/3Medical Research Council MR/N02589X/1Wellcome Trust 200893Wellcome Trust 200893/Z/16/Z
6 · The paper itself

Abstract

objectiveGlucagon-like peptide-1 receptor agonists (GLP-1RAs) are used as anti-diabetic drugs and are approved for obesity treatment. However, GLP-1RAs also affect heart rate (HR) and arterial blood pressure (ABP) in rodents and humans. Although the activation of GLP-1 receptors (GLP-1R) is known to increase HR, the circuits recruited are unclear, and in particular, it is unknown whether GLP-1RAs activate preproglucagon (PPG) neurons, the brain source of GLP-1, to elicit these effects.

methodsWe investigated the effect of GLP-1RAs on heart rate in anaesthetized adult mice. In a separate study, we manipulated the activity of nucleus tractus solitarius (NTS) PPG neurons (PPG

resultsSystemic administration of the GLP-1RA Ex-4 increased resting HR in anaesthetized or conscious mice, but had no effect on ABP in conscious mice. This effect was abolished by β-adrenoceptor blockade with atenolol, but unaffected by the muscarinic antagonist atropine. Furthermore, Ex-4-induced tachycardia persisted when PPG

conclusionsThese results demonstrate that both systemic application of Ex-4 or GLP-1 and chemogenetic activation of PPG

Indexed as

Glucagon-Like Peptide-1 Receptor AgonistsHeart RateAnimalsDisease Models, AnimalElectrocardiographyExenatideGlucagon-Like Peptide-1 ReceptorMiceMice, TransgenicNeuronsProglucagonSolitary NucleusSpinal CordSympathetic Nervous SystemTachycardiaExenatideGlucagon-Like Peptide-1 ReceptorGlucagon-Like Peptide-1 Receptor AgonistsProglucagonBiotelemetryCardiovascular functionChemogeneticsGLP-1PPG neuronsSympathetic outflow

Identifiers

PMID32446875
PMCPMC7317700
OpenAlexW3027768060

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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.