ArticleNeuropharmacology2015
Alpha-1 adrenoreceptors modulate GABA release onto ventral tegmental area dopamine neurons.
Article in Neuropharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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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.
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Who cites it
15 citing papers in PubMed, 29 citations in OpenAlex.
- Activation of a locus coeruleus to ventral tegmental area noradrenergic pathway blunts binge-like ethanol intake and promotes aversive unconditioned responses in TH-ires-Cre mice.Neuropharmacology · 2026Article
- Characterization of the Astrocyte Calcium Response to Norepinephrine in the Ventral Tegmental Area.Cells · 2024Article
- Assessing attention and impulsivity in the variable stimulus duration and variable intertrial interval rodent continuous performance test schedules using noradrenaline receptor antagonists in female C57BL/6JRj mice.Psychopharmacology · 2023Article
- Regulation of cocaine seeking behavior by locus coeruleus noradrenergic activity in the ventral tegmental area is time- and contingency-dependent.Frontiers in neuroscience · 2022Article
- AlphaFrontiers in behavioral neuroscience · 2022Article
- The Aversion Function of the Limbic Dopaminergic Neurons and Their Roles in Functional Neurological Disorders.Frontiers in cell and developmental biology · 2021Review
- Alpha-1 Adrenergic Receptors Modulate Glutamate and GABA Neurotransmission onto Ventral Tegmental Dopamine Neurons during Cocaine Sensitization.International journal of molecular sciences · 2020Article
- Autophagy-Based Hypothesis on the Role of Brain Catecholamine Response During Stress.Frontiers in psychiatry · 2020Review
- Gαq protein signaling in the bed nucleus of the stria terminalis regulate the lipopolysaccharide-induced despair-like behavior in mice.AIMS neuroscience · 2020Article
- Norepinephrine regulates cocaine-primed reinstatement via α1-adrenergic receptors in the medial prefrontal cortex.Neuropharmacology · 2017Article
- Specificity and impact of adrenergic projections to the midbrain dopamine system.Brain research · 2016Review
- Regulation of neurological and neuropsychiatric phenotypes by locus coeruleus-derived galanin.Brain research · 2016Review
- Locus Ceruleus Norepinephrine Release: A Central Regulator of CNS Spatio-Temporal Activation?Frontiers in synaptic neuroscience · 2016Article
- BK Channels in the Central Nervous System.International review of neurobiology · 2016Review
- Cocaine increases dopaminergic neuron and motor activity via midbrain α1 adrenergic signaling.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2015Article
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
Abstract
The ventral tegmental area (VTA) plays an important role in reward and motivational processes involved in drug addiction. Previous studies have shown that alpha1-adrenoreceptors (α1-AR) are primarily found pre-synaptically at this area. We hypothesized that GABA released onto VTA-dopamine (DA) cells is modulated by pre-synaptic α1-AR. Recordings were obtained from putative VTA-DA cells of male Sprague-Dawley rats (28-50 days postnatal) using whole-cell voltage clamp technique. Phenylephrine (10 μM; α1-AR agonist) decreased the amplitude of GABAA receptor-mediated inhibitory postsynaptic currents (IPSCs) evoked by electrical stimulation of afferent fibers (n = 7; p < 0.05). Prazosin (1 μM, α1-AR antagonist), blocked this effect. Paired-pulse ratios were increased by phenylephrine application (n = 13; p < 0.05) indicating a presynaptic site of action. Spontaneous IPSCs frequency but not amplitude, were decreased in the presence of phenylephrine (n = 7; p < 0.05). However, frequency or amplitude of miniature IPSCs were not changed (n = 9; p > 0.05). Phenylephrine in low Ca(2+) (1 mM) medium decreased IPSC amplitude (n = 7; p < 0.05). Chelerythrine (a protein kinase C inhibitor) blocked the α1-AR action on IPSC amplitude (n = 6; p < 0.05). Phenylephrine failed to decrease IPSCs amplitude in the presence of paxilline, a BK channel blocker (n = 7; p < 0.05). Taken together, these results demonstrate that α1-ARs at presynaptic terminals can modulate GABA release onto VTA-DA cells. Drug-induced changes in α1-AR could contribute to the modifications occurring in the VTA during the addiction process.
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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.