ArticleCerebral cortex (New York, N.Y. : 1991)2014
Dopaminergic modulation of GABAergic transmission in the entorhinal cortex: concerted roles of α1 adrenoreceptors, inward rectifier K⁺, and T-type Ca²⁺ channels.
Article in Cerebral cortex (New York, N.Y. : 1991), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 36 citations in OpenAlex.
- Activation of the medial entorhinal cortex drives memory-guided navigation behavior.bioRxiv : the preprint server for biology · 2025Article
- Genetic disruption of dopamine β-hydroxylase dysregulates innate responses to predator odor in mice.Neurobiology of stress · 2024Article
- Genetic disruption of dopamine β-hydroxylase dysregulates innate responses to predator odor in mice.bioRxiv : the preprint server for biology · 2024Article
- Levodopa suppresses grid-like activity and impairs spatial learning in novel environments in healthy young adults.Cerebral cortex (New York, N.Y. : 1991) · 2023Article
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- Estrogen Receptor-A in Medial Preoptic Area Contributes to Sex Difference of Mice in Response to Sevoflurane Anesthesia.Neuroscience bulletin · 2022Article
- CaInternational journal of molecular sciences · 2022Review
- Navigating for reward.Nature reviews. Neuroscience · 2021Review
- αFrontiers in pharmacology · 2020Review
- Roles of KNeuropharmacology · 2019Article
- Learning place cells, grid cells and invariances with excitatory and inhibitory plasticity.eLife · 2018Article
- Inwardly rectifying potassium channels influenceDevelopment (Cambridge, England) · 2017Article
- Histamine facilitates GABAergic transmission in the rat entorhinal cortex: Roles of HHippocampus · 2017Article
- Article
- Locus Ceruleus Norepinephrine Release: A Central Regulator of CNS Spatio-Temporal Activation?Frontiers in synaptic neuroscience · 2016Article
- A behavioral defect of temporal association memory in mice that partly lack dopamine reuptake transporter.Scientific reports · 2015Article
- Depression of neuronal excitability and epileptic activities by group II metabotropic glutamate receptors in the medial entorhinal cortex.Hippocampus · 2015Article
- Neuroanatomical correlates of atrial fibrillation: a longitudinal MRI study.Journal of vascular and interventional neurology · 2014Article
- Cross interaction of dopaminergic and adrenergic systems in neural modulation.International journal of physiology, pathophysiology and pharmacology · 2014Review
- Moderate Alcohol Exposure during the Rat Equivalent to the Third Trimester of Human Pregnancy Alters Regulation of GABAA Receptor-Mediated Synaptic Transmission by Dopamine in the Basolateral Amygdala.Frontiers in pediatrics · 2014Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
Whereas the entorhinal cortex (EC) receives profuse dopaminergic innervations from the midbrain, the effects of dopamine (DA) on γ-Aminobutyric acid (GABA)ergic interneurons in this brain region have not been determined. We probed the actions of DA on GABAA receptor-mediated synaptic transmission in the EC. Application of DA increased the frequency, not the amplitude, of spontaneous IPSCs (sIPSCs) and miniature IPSCs (mIPSCs) recorded from entorhinal principal neurons, but slightly reduced the amplitude of the evoked IPSCs. The effects of DA were unexpectedly found to be mediated by α1 adrenoreceptors, but not by DA receptors. DA endogenously released by the application of amphetamine also increased the frequency of sIPSCs. Ca(2+) influx via T-type Ca(2+) channels was required for DA-induced facilitation of sIPSCs and mIPSCs. DA depolarized and enhanced the firing frequency of action potentials of interneurons. DA-induced depolarization was independent of extracellular Na(+) and Ca(2+) and did not require the functions of hyperpolarization-activated (Ih) channels and T-type Ca(2+) channels. DA-generated currents showed a reversal potential close to the K(+) reversal potential and inward rectification, suggesting that DA inhibits the inward rectifier K(+) channels (Kirs). Our results demonstrate that DA facilitates GABA release by activating α1 adrenoreceptors to inhibit Kirs, which further depolarize interneurons resulting in secondary Ca(2+) influx via T-type Ca(+) channels.
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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.