Abstract
Serotonin, or 5-hydroxytryptamine (5-HT), is found to be involved in many physiological or pathophysiological processes including cognitive function. Seven distinct receptors (5-HT1–7), each with several subpopulations, have been identified for serotonin, which are different in terms of localization and downstream signaling. Because of the development of selective agonists and antagonists for these receptors as well as transgenic animal models of cognitive disorders, our understanding of the role of serotonergic transmission in learning and memory has improved in recent years. A large body of evidence indicates the interplay between serotonergic transmission and other neurotransmitters including acetylcholine, dopamine, γ-aminobutyric acid (GABA) and glutamate, in the neurobiological control of learning and memory. In addition, there has been an alteration in the density of serotonergic receptors in aging and Alzheimer’s disease, and serotonin modulators are found to alter the process of amyloidogenesis and exert cognitive-enhancing properties. Here, we discuss the serotonin-induced modulation of various systems involved in mnesic function including cholinergic, dopaminergic, GABAergic, glutamatergic transmissions as well as amyloidogenesis and intracellular pathways.
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Abbreviations
- 2PSDT:
-
Two-platform spatial discrimination task
- 3xTg-AD:
-
Triple-transgenic mouse model of Alzheimer’s disease
- 5-HT:
-
5-Hydroxytryptamine
- AC:
-
Adenylate cyclase
- Ach:
-
Acetylcholine
- AD:
-
Alzheimer’s disease
- APP:
-
Amyloid precursor protein
- ARN:
-
Anterior raphe nucleus
- Aβ:
-
Amyloid β
- cAMP:
-
Cyclic adenosine monophosphate
- cGMP:
-
Cyclic guanosine monophosphate
- CPP:
-
Conditioned place preference
- CREB:
-
cAMP-response element binding
- DA:
-
Dopamine
- DH:
-
Dorsal hippocampus
- DMTS:
-
Delayed matching to sample
- DNPTP:
-
Delayed non-matching to position
- DRN:
-
Dorsal raphe nucleus
- EPAC:
-
Exchange proteins activated by cAMP
- EPSCs:
-
Excitatory postsynaptic currents
- ERK:
-
Extracellular signal-regulated kinase
- FC:
-
Frontal cortex
- GABA:
-
Gamma (γ)-aminobutyric acid
- GAD:
-
Glutamic acid decarboxylase
- Gi :
-
Inhibitory G-protein
- Glu:
-
Glutamate
- GPCRs:
-
G-protein-coupled receptors
- Gs:
-
Stimulatory G-protein
- GSK3:
-
Glycogen synthase kinase 3
- i.c.v.:
-
Intracerebroventricular
- i.p.:
-
Intraperitoneal
- i.v.:
-
Intravenous
- LTP:
-
Long-term potentiation
- LTD:
-
Long-term depression
- MAPK:
-
Mitogen-activated protein kinases
- MBN:
-
Magnocellular nucleus basalis
- mGluR:
-
Metabotropic glutamate receptor
- MS/vDB:
-
Medial septum and the adjacent vertical limb of the diagonal band of Broca area
- MWM:
-
Morris water maze
- NAc:
-
Nucleus accumbens
- NMDA:
-
N-Methyl-D-aspartate
- NO:
-
Nitric oxide
- ORT:
-
Object recognition task
- PA:
-
Passive avoidance
- PCA:
-
p-Chloroamphetamine
- PDE:
-
Phosphodiesterase
- PFC:
-
Prefrontal cortex
- PI:
-
Pavlovian/instrumental autoshaping
- PKA:
-
Protein kinase A
- PKC:
-
Protein kinase C
- PKG:
-
Protein kinase G
- PKM:
-
Protein kinase M
- PLA2:
-
Phospholipase A2
- PS1:
-
Presenilin-1
- PT:
-
Pass through
- s.c.:
-
Subcutaneous
- SA:
-
Self-administration
- sIPSC:
-
Spontaneous inhibitory postsynaptic current
- VTA:
-
Ventral tegmental area
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Seyedabadi, M., Fakhfouri, G., Ramezani, V. et al. The role of serotonin in memory: interactions with neurotransmitters and downstream signaling. Exp Brain Res 232, 723–738 (2014). https://doi.org/10.1007/s00221-013-3818-4
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DOI: https://doi.org/10.1007/s00221-013-3818-4