ArticleCell2015
Hippocampal Dopamine/DRD1 Signaling Dependent on the Ghrelin Receptor.
Article in Cell, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 2 of them syntheses that pooled it.
What it found
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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.
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.
Who cites it
72 citing papers in PubMed, 2 syntheses or guidelines pooled it, 129 citations in OpenAlex.
- Animal studies reveal that the ghrelin pathway regulates alcohol-mediated responses.Frontiers in psychiatry · 2023Pooled it
- An Overview of Appetite-Regulatory Peptides in Addiction Processes; From Bench to Bed Side.Frontiers in neuroscience · 2021Pooled it
- Activation of GHSRs Facilitates the Excitability of Dentate Gyrus Granule Cells and Short-Term Spatial Memory via Multiple Ionic and Signaling Mechanisms.Advanced biology · 2026Article
- Myeloid GHSR Deficiency Protects Against Endotoxemia via Macrophage Mitochondrial Reprogramming.Biomedicines · 2026Article
- Integrative role of orexigenic peptides in neuroprotection and neurodegenerative disease modulation.Bioscience reports · 2026Review
- Meta-inflammation through the lens of macrophage programming and nutrient-sensing ghrelin signaling.Immunometabolism (Cobham, Surrey) · 2026Review
- Striosomal ghrelin receptor activity controls reward-cost integration.Research square · 2026Article
- Stachyose supplementation attenuates ischemic stroke injury via gut-brain axis mediated adenine metabolism and neuroactive ligand-receptor signaling.Current research in food science · 2026Article
- Ghrelin Increases Glutamate Release at the Perforant Path-Dentate Gyrus Granule Cell Synapses by Cross-Activating Dopamine DJournal of cellular physiology · 2025Article
- Beyond Hunger: The Structure, Signaling, and Systemic Roles of Ghrelin.International journal of molecular sciences · 2025Review
- Dual Inhibitors of Acetylcholinesterase and Monoamine Oxidase-B for the Treatment of Alzheimer's Disease.Molecules (Basel, Switzerland) · 2025Review
- Visualization of the existence of LEAP2 in the nucleus accumbens and its role in amphetamine-induced locomotor activity.Molecular brain · 2025Article
- Ghrelin in Depression: A Promising Therapeutic Target.Molecular neurobiology · 2025Review
- An Emerging Role for Gut-Brain Signaling Involving Ghrelin in Chronic Stress.Advances in experimental medicine and biology · 2025Review
- Increased GHS-R1a expression in the hippocampus impairs memory encoding and contributes to AD-associated memory deficits.Communications biology · 2024Article
- The dopamine analogue CA140 alleviates AD pathology, neuroinflammation, and rescues synaptic/cognitive functions by modulating DRD1 signaling or directly binding to Abeta.Journal of neuroinflammation · 2024Article
- Cutaneous Calcium/Calmodulin-Dependent Protein Kinase II-γ-Positive Sympathetic Nerves Secreting Norepinephrine Dictate Psoriasis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Internal-state-dependent control of feeding behavior via hippocampal ghrelin signaling.Neuron · 2024Article
- Non-canonical interplay between glutamatergic NMDA and dopamine receptors shapes synaptogenesis.Nature communications · 2024Article
- Neuropeptides Modulate Feeding via the Dopamine Reward Pathway.Neurochemical research · 2023Review
12 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
The ghrelin receptor (GHSR1a) and dopamine receptor-1 (DRD1) are coexpressed in hippocampal neurons, yet ghrelin is undetectable in the hippocampus; therefore, we sought a function for apo-GHSR1a. Real-time single-molecule analysis on hippocampal neurons revealed dimerization between apo-GHSR1a and DRD1 that is enhanced by DRD1 agonism. In addition, proximity measurements support formation of preassembled apo-GHSR1a:DRD1:Gαq heteromeric complexes in hippocampal neurons. Activation by a DRD1 agonist produced non-canonical signal transduction via Gαq-PLC-IP3-Ca(2+) at the expense of canonical DRD1 Gαs cAMP signaling to result in CaMKII activation, glutamate receptor exocytosis, synaptic reorganization, and expression of early markers of hippocampal synaptic plasticity. Remarkably, this pathway is blocked by genetic or pharmacological inactivation of GHSR1a. In mice, GHSR1a inactivation inhibits DRD1-mediated hippocampal behavior and memory. Our findings identify a previously unrecognized mechanism essential for DRD1 initiation of hippocampal synaptic plasticity that is dependent on GHSR1a, and independent of cAMP signaling.
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What OpenQuestion holds
Registered trials
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.