Evidence map›Paper›PMID 28667175›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2017

The Relevance of AgRP Neuron-Derived GABA Inputs to POMC Neurons Differs for Spontaneous and Evoked Release.

Andrew R Rau, Shane T Hentges

Abstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
–field-weighted citation impact
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

33 citing papers in PubMed.

  1. Article
  2. The Genetic Blueprint of Obesity: From Pathogenesis to Novel Therapies.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2025
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  16. Fetal programming of human energy homeostasis brain networks: Issues and considerations.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2022
    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

2 authors.

Andrew R RauDepartment of Biomedical Sciences, Colorado State University, Fort Collins, Colorado 80523.ORCID 0000-0002-7983-6809
Shane T HentgesDepartment of Biomedical Sciences, Colorado State University, Fort Collins, Colorado 80523 hentgess@colostate.edu.ORCID 0000-0001-5541-2713

Funding

Hypothalmic Circuits Regulating Energy Balance and Obesity: Synaptic PhysiologyR01DK078749 · NIDDK · WASHINGTON STATE UNIVERSITY · PI HENTGES, SHANE T · 2008 to 2021
$4.6M
Opioid regulation of hypothalamic neuronsR01DA032562 · NIDA · COLORADO STATE UNIVERSITY · PI HENTGES, SHANE T · 2012 to 2016
$1.6M
NIDA NIH HHS R01 DA032562NIDDK NIH HHS R01 DK078749
6 · The paper itself

Abstract

Hypothalamic agouti-related peptide (AgRP) neurons potently stimulate food intake, whereas proopiomelanocortin (POMC) neurons inhibit feeding. Whether AgRP neurons exert their orexigenic actions, at least in part, by inhibiting anorexigenic POMC neurons remains unclear. Here, the connectivity between GABA-releasing AgRP neurons and POMC neurons was examined in brain slices from male and female mice. GABA-mediated spontaneous IPSCs (sIPSCs) in POMC neurons were unaffected by disturbing GABA release from AgRP neurons either by cell type-specific deletion of the vesicular GABA transporter or by expression of botulinum toxin in AgRP neurons to prevent vesicle-associated membrane protein 2-dependent vesicle fusion. Additionally, there was no difference in the ability of μ-opioid receptor (MOR) agonists to inhibit sIPSCs in POMC neurons when MORs were deleted from AgRP neurons, and activation of the inhibitory designer receptor hM4Di on AgRP neurons did not affect sIPSCs recorded from POMC neurons. These approaches collectively indicate that AgRP neurons do not significantly contribute to the strong spontaneous GABA input to POMC neurons. Despite these observations, optogenetic stimulation of AgRP neurons reliably produced evoked IPSCs in POMC neurons, leading to the inhibition of POMC neuron firing. Thus, AgRP neurons can potently affect POMC neuron function without contributing a significant source of spontaneous GABA input to POMC neurons. Together, these results indicate that the relevance of GABAergic inputs from AgRP to POMC neurons is state dependent and highlight the need to consider different types of transmitter release in circuit mapping and physiologic regulation.

Indexed as

Action PotentialsAgouti-Related ProteinAnimalsEvoked PotentialsFemalegamma-Aminobutyric AcidMaleMiceMice, Inbred C57BLMice, TransgenicNeurotransmitter AgentsPro-OpiomelanocortinSynapsesSynaptic TransmissionAgouti-Related ProteinAgrp protein, mousegamma-Aminobutyric AcidNeurotransmitter AgentsPro-Opiomelanocortinarcuate nucleuscircuit mappingelectrophysiologyenergy balanceIPSCoptogenetics

Identifiers

PMID28667175
PMCPMC5546108

What OpenQuestion holds

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Read underepoch 390

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.