Abstract
This review article gives an overview of a number of central neuro-transmitters, which are essential for integrating many functions in the central nervous system (CNS), such as learning, memory, sleep cycle, body movement, hormone regulation and many others. Neurons use neuro-transmitters to communicate, and a great variety of molecules are known to fit the criteria to be classified as such. A process shared by all neuro-transmitters is their release by excocytosis, and we give an outline of the molecular events and protein complexes involved in this mechanism. Synthesis, transport, inactivation, and cellular signaling can be very diverse when different neuro-transmitters are compared, and these processes are described separately for each neuro-transmitter system. Here we focus on the most well known neurotransmitters: acetyl-choline, catechol-amines (dopamine and nor-adrenalin), indole-amine (serotonin), glutamate, and γ- amino-butyric acid (GABA). Glutamate is the major excitatory neuro-transmitter in the brain and its actions are counterbalanced by GABA, which is the major inhibitory substance in the CNS. A balance of neuronal transmission between these two neuro-transmitters is essential to normal brain function. Acetyl-choline, serotonin and catechol-amines have a more modulatory function in the brain, being involved in many neuronal circuits. Apart from summarizing the current knowledge about the synthesis, release and receptor signaling of these transmitters, some disease states due to alteration of their normal neuro-transmission are also described.
Keywords: Acetyl-choline, Alzheimer's disease, catechol-amines, γ-amino-butyric acid (GABA), glutamate, indole-amine, neuro-transmitters, learning and memory
Current Medicinal Chemistry
Title: Neuro-Transmitters in the Central Nervous System & their Implication in Learning and Memory Processes
Volume: 16 Issue: 7
Author(s): Helton J. Reis, Cristina Guatimosim, Maryse Paquet, Magda Santos, Fabiola M. Ribeiro, Arthur Kummer, Grace Schenatto, Joao V. Salgado, Luciene B. Vieira, Antonio L. Teixeira and Andras Palotas
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Keywords: Acetyl-choline, Alzheimer's disease, catechol-amines, γ-amino-butyric acid (GABA), glutamate, indole-amine, neuro-transmitters, learning and memory
Abstract: This review article gives an overview of a number of central neuro-transmitters, which are essential for integrating many functions in the central nervous system (CNS), such as learning, memory, sleep cycle, body movement, hormone regulation and many others. Neurons use neuro-transmitters to communicate, and a great variety of molecules are known to fit the criteria to be classified as such. A process shared by all neuro-transmitters is their release by excocytosis, and we give an outline of the molecular events and protein complexes involved in this mechanism. Synthesis, transport, inactivation, and cellular signaling can be very diverse when different neuro-transmitters are compared, and these processes are described separately for each neuro-transmitter system. Here we focus on the most well known neurotransmitters: acetyl-choline, catechol-amines (dopamine and nor-adrenalin), indole-amine (serotonin), glutamate, and γ- amino-butyric acid (GABA). Glutamate is the major excitatory neuro-transmitter in the brain and its actions are counterbalanced by GABA, which is the major inhibitory substance in the CNS. A balance of neuronal transmission between these two neuro-transmitters is essential to normal brain function. Acetyl-choline, serotonin and catechol-amines have a more modulatory function in the brain, being involved in many neuronal circuits. Apart from summarizing the current knowledge about the synthesis, release and receptor signaling of these transmitters, some disease states due to alteration of their normal neuro-transmission are also described.
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Reis J. Helton, Guatimosim Cristina, Paquet Maryse, Santos Magda, Ribeiro M. Fabiola, Kummer Arthur, Schenatto Grace, Salgado V. Joao, Vieira B. Luciene, Teixeira L. Antonio and Palotas Andras, Neuro-Transmitters in the Central Nervous System & their Implication in Learning and Memory Processes, Current Medicinal Chemistry 2009; 16 (7) . https://dx.doi.org/10.2174/092986709787549271
DOI https://dx.doi.org/10.2174/092986709787549271 |
Print ISSN 0929-8673 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-533X |
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