Evidence map›Paper›PMID 33764905›Full record

ArticleJCI insight2021

DMV extrasynaptic NMDA receptors regulate caloric intake in rats.

Courtney Clyburn, R Alberto Travagli, Amy C Arnold, Kirsteen N Browning

Open access · goldAbstract read
In one paragraph

Article in JCI insight, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.7field-weighted citation impact, top 37% 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

7 citing papers in PubMed, 7 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. Brain-gut communication: vagovagal reflexes interconnect the two "brains".American journal of physiology. Gastrointestinal and liver physiology · 2021
    Review
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 1 institution in 1 country.

Courtney Clyburn
R Alberto Travagli
Amy C Arnold
Kirsteen N Browning
Penn State Milton S. Hershey Medical Center · US

Funding

Influence of diet on the development of homeostatic neurocircuitsR01DK111667 · NIDDK · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI BROWNING, KIRSTEEN NAIRN · 2018 to 2021
$1.6M
Astrocyte-Dependent Modulation of Synaptic Strength in Response to Acute High Fat DietF31DK118833 · NIDDK · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI CLYBURN, COURTNEY E · 2019 to 2020
$64k
NIDDK NIH HHS F31 DK118833NIDDK NIH HHS R01 DK111667
6 · The paper itself

Abstract

Acute high-fat diet (aHFD) exposure induces a brief period of hyperphagia before caloric balance is restored. Previous studies have demonstrated that this period of regulation is associated with activation of synaptic N-methyl-D-aspartate (NMDA) receptors on dorsal motor nucleus of the vagus (DMV) neurons, which increases vagal control of gastric functions. Our aim was to test the hypothesis that activation of DMV synaptic NMDA receptors occurs subsequent to activation of extrasynaptic NMDA receptors. Sprague-Dawley rats were fed a control or high-fat diet for 3-5 days prior to experimentation. Whole-cell patch-clamp recordings from gastric-projecting DMV neurons; in vivo recordings of gastric motility, tone, compliance, and emptying; and food intake studies were used to assess the effects of NMDA receptor antagonism on caloric regulation. After aHFD exposure, inhibition of extrasynaptic NMDA receptors prevented the synaptic NMDA receptor-mediated increase in glutamatergic transmission to DMV neurons, as well as the increase in gastric tone and motility, while chronic extrasynaptic NMDA receptor inhibition attenuated the regulation of caloric intake. After aHFD exposure, the regulation of food intake involved synaptic NMDA receptor-mediated currents, which occurred in response to extrasynaptic NMDA receptor activation. Understanding these events may provide a mechanistic basis for hyperphagia and may identify novel therapeutic targets for the treatment of obesity.

Indexed as

Diet, High-FatAnimalsAppetite RegulationEatingEnergy IntakeExcitatory Amino Acid AntagonistsGastric EmptyingGastrointestinal MotilityMedulla OblongataMemantineNeuronsPatch-Clamp TechniquesPiperidinesRatsReceptors, N-Methyl-D-AspartateStomachExcitatory Amino Acid AntagonistsifenprodilMemantinePiperidinesReceptors, N-Methyl-D-AspartateGastroenterologyIon channelsNeuroscienceObesitySynapses

Identifiers

PMID33764905
PMCPMC8262316
OpenAlexW3138340910

What OpenQuestion holds

Textmetadata
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.