The 5-HT1A receptor as a serotonergic target for neuroprotection in cerebral ischemia. 2021

Rafael Pazinatto de Aguiar, and Adrian Newman-Tancredi, and Jos Prickaerts, and Rúbia Maria Weffort de Oliveira
Department of Pharmacology and Therapeutics, State University of Maringá, Av. Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil.

Cerebral ischemia due to stroke or cardiac arrest greatly affects daily functioning and the quality of life of patients and has a high socioeconomic impact due to the surge in their prevalence. Advances in the identification of an effective pharmacotherapy to promote neuroprotection and recovery after a cerebral ischemic insult are, however, limited. The serotonin 1A (5-HT1A) receptor has been implicated in the regulation of several brain functions, including mood, emotions, memory, and neuroplasticity, all of which are deleteriously affected by cerebral ischemia. This review focuses on the specific roles and mechanisms of 5-HT1A receptors in neuroprotection in experimental models of cerebral ischemia. We present experimental evidence that 5-HT1A receptor agonists can prevent neuronal damage and promote functional recovery induced by focal and transient global ischemia in rodents. However, indiscriminate activation of pre-and postsynaptic by non-biased 5-HT1A receptor agonists may be a limiting factor in the anti-ischemic clinical efficacy of these compounds since 5-HT1A receptors in different brain regions can mediate diverging or even contradictory responses. Current insights are presented into the 'biased' 5-HT1A post-synaptic heteroreceptor agonist NLX-101 (also known as F15599), a compound that preferentially and potently stimulates postsynaptic cortical pyramidal neurons without inhibiting firing of serotoninergic neurons, as a potential strategy providing neuroprotection in cerebral ischemic conditions.

UI MeSH Term Description Entries
D009474 Neurons The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM. Nerve Cells,Cell, Nerve,Cells, Nerve,Nerve Cell,Neuron
D001921 Brain The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM. Encephalon
D002545 Brain Ischemia Localized reduction of blood flow to brain tissue due to arterial obstruction or systemic hypoperfusion. This frequently occurs in conjunction with brain hypoxia (HYPOXIA, BRAIN). Prolonged ischemia is associated with BRAIN INFARCTION. Cerebral Ischemia,Ischemic Encephalopathy,Encephalopathy, Ischemic,Ischemia, Cerebral,Brain Ischemias,Cerebral Ischemias,Ischemia, Brain,Ischemias, Cerebral,Ischemic Encephalopathies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000066829 Neuroprotection The physiological processes and techniques used by the body to prevent neuronal injury and degeneration in the central nervous system following acute disorders or as a result of chronic neurodegenerative diseases. Neural Protection,Neuron Protection,Neuronal Protection,Protection, Neural,Protection, Neuron,Protection, Neuronal
D044282 Receptor, Serotonin, 5-HT1A A serotonin receptor subtype found distributed through the CENTRAL NERVOUS SYSTEM where they are involved in neuroendocrine regulation of ACTH secretion. The fact that this serotonin receptor subtype is particularly sensitive to SEROTONIN RECEPTOR AGONISTS such as BUSPIRONE suggests its role in the modulation of ANXIETY and DEPRESSION. Serotonin 1A Receptor,5-HT(1A) Receptor,5-HT1A Receptor,5-Hydroxytryptamine 1A Receptor,5-Hydroxytryptamine 1A Receptors,Receptor, 5-Hydroxytryptamine 1A,Serotonin Receptor, 5-HT1A,Serotonin, 5-HT1a Receptor,1A Receptor, 5-Hydroxytryptamine,1A Receptors, 5-Hydroxytryptamine,5 HT1A Receptor,5 Hydroxytryptamine 1A Receptor,5 Hydroxytryptamine 1A Receptors,5-HT1A Serotonin Receptor,5-HT1a Receptor Serotonin,Receptor Serotonin, 5-HT1a,Receptor, 5 Hydroxytryptamine 1A,Receptor, 5-HT1A,Receptor, 5-HT1A Serotonin,Receptor, Serotonin 1A,Receptors, 5-Hydroxytryptamine 1A,Serotonin Receptor, 5 HT1A,Serotonin, 5 HT1a Receptor
D058825 Serotonin 5-HT1 Receptor Agonists Endogenous compounds and drugs that specifically stimulate SEROTONIN 5-HT1 RECEPTORS. Included under this heading are agonists for one or more of the specific 5-HT1 receptor subtypes. 5-HT1 Agonists,5-HT1 Agonist,5-HT1A Agonist,5-HT1B Agonist,5-HT1B-D Agonist,5-HT1D Agonist,Serotonin 5-HT1A Receptor Agonists,Serotonin 5-HT1B Receptor Agonists,Serotonin 5-HT1B-D Agonists,Serotonin 5-HT1D Receptor Agonists,5 HT1 Agonist,5 HT1 Agonists,5 HT1A Agonist,5 HT1B Agonist,5 HT1B D Agonist,5 HT1D Agonist,5-HT1B-D Agonists, Serotonin,Agonist, 5-HT1,Agonist, 5-HT1A,Agonist, 5-HT1B,Agonist, 5-HT1B-D,Agonist, 5-HT1D,Agonists, 5-HT1,Agonists, Serotonin 5-HT1B-D,Serotonin 5 HT1 Receptor Agonists,Serotonin 5 HT1A Receptor Agonists,Serotonin 5 HT1B D Agonists,Serotonin 5 HT1B Receptor Agonists,Serotonin 5 HT1D Receptor Agonists

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