title: 5-HT2 receptors-mediated modulation of voltage-gated K+ channels and neurophysiopathological correlates.
abstract: The activity of voltage-gated K(+) channels (Kv) can be dynamically modulated by several events, including neurotransmitter stimulated biochemical cascades mediated by G protein-coupled receptors such as 5-HT2 receptors (5-HT2Rs). Activation of 5-HT2A/CR inhibits the Shaker-like K(+) channels Kv1.1 and Kv1.2, and this modulation involves the dual coordination of both RPTPα and distinct tyrosine kinases coupled to this receptor; 5-HT2Rs-mediated modulation of Kv channels controls glutamate release onto prefrontal cortex neurons that might play critical roles in neurophysiological, neurological, and psychiatric conditions. Noticeably, hallucinogens modulate Kv channel activity, acting at 5-HT2R. Hence, comprehensive knowledge of 5-HT2R signaling through modulation of distinct K(+) channels is a pivotal step in the direction that will enable scientists to discover novel 5-HT functions and dysfunctions in the brain and to identify original therapeutic targets.
authors.affiliation: Section of Human Physiology, Department of Internal Medicine, University of Perugia, Faculty of Medicine and Surgery, Via del Giochetto, 06126, Perugia, Italy, cdadamo@unipg.it.
authors.forename: Maria Cristina
authors.initials: MC
authors.lastname: D'Adamo
authors.forename: Ilenio
authors.initials: I
authors.lastname: Servettini
authors.forename: Luca
authors.initials: L
authors.lastname: Guglielmi
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Di Matteo
authors.forename: Roberto
authors.initials: R
authors.lastname: Di Maio
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Di Giovanni
authors.forename: Mauro
authors.initials: M
authors.lastname: Pessia
mesh_terms: D000818:Animals; D006801:Humans; D009474:Neurons / Q000378:metabolism*; D010766:Phosphorylation / Q000502:physiology; D024642:Potassium Channels, Voltage-Gated / Q000378:metabolism*; D044348:Receptors, Serotonin, 5-HT2 / Q000378:metabolism*; D012701:Serotonin / Q000378:metabolism; D015398:Signal Transduction / Q000502:physiology*
chemical_list: D024642:Potassium Channels, Voltage-Gated; D044348:Receptors, Serotonin, 5-HT2; D012701:Serotonin