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Details for messenger / hormone: serotonin

EndoNet ID: ENH00166

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Synonyms

  • serotonin
  • 5HT
  • 5-hydroxytryptamine
  • 5-OH-tryptamin
  • 5-HT

General information

  • Small-molecule neurotransmitter.
  • It is synthesized from tryptophan in serotonergic neurons in the central nervous system (CNS) and enterochromaffin cells in the gastrointestinal tract of animals including humans. [1]
  • More than 12 distinct mammalian serotonin (5-HT) receptor subtypes have been identified, all of which are G protein-coupled receptors linked to a variety of signal trancduction cascades. These subtypes exhibit subtype-specific distribution with the CNS and mediate distinct behavioral effects of 5-HT. [1]
  • Other Functions than Neurotransmitter: regulation of food intake, energy balance, cardiovascular control, pulmonary control [2]

Classification

Hormone function

  • CNS function
  • homeostasis
    • pulmonary control
      • cardiovascular control
      • metabolism

      Chemical classification

      • hormone
        • not genome-encoded
          • amino acids
            • tryptophan-derived

        Composition

        KEGG C00780

        Links to other resources

        KEGG C00780
        • Anatomical structure: raphe_nuclei_of_pontile_tegmentum

          Influenced by:

          • CB1
            in cerebral_cortex
            • Stimulation of the CB1 receptor results in the inhibition of a range of excitatory and inhibitory neurotransmitters, like acetylcholine, noradrenaline, dopamine, 5-hydroxytryptamine, D-aspartate and cholecystokinin. [3]
        • Anatomical structure: brain_stem

        • Anatomical structure: posterior_raphe_nucleus_of_midbrain

          Influenced by:

          • 5-HT-1A
            in posterior_raphe_nucleus_of_midbrain
            • The activation of somatodendritic autoreceptors inhibit the electric activity of serotoninergic neurons, thereby reducing serotonin release and neurotransmission. [4]
        • Anatomical structure: enterochromaffin_cell_of_gastrointestinal_tract

          • 5-HT is produced and stored in the EC cells. [5]

        Targets

        Cell5-HT-1A5-HT-1B5-HT-1D5-ht-1E5-ht-1F5-HT-2A5-HT-2B5-HT-2C5-ht-5 receptor5-ht-5BR5-ht-6R5-ht-7R5-HT3 receptor5-hydroxytryptamine receptor 4alpha-2A adrenoreceptoralpha-2B adrenoreceptor
        amygdaloid body Present
        Influences
        • GABA
        Present
        Influences
        • GABA
        Present
        area postrema of pons Present
        atrium of heart Present
        basket cell Present
        Present
        caudate nucleus Present
        cell of adrenal gland zona fasciculata Present
        Influences
        • cortisol
        cell of adrenal gland zona glomerulosa Present
        Influences
        • aldosterone
        central nerve system element Present
        Present
        cerebellar cortex Present
        Present
        Present
        Influences
        • norepinephrine
        • acetylcholine
        Present
        Influences
        • norepinephrine
        • acetylcholine
        cerebellar cortex Present
        Present
        cerebellum Present
        cerebral cortex Present
        Present
        corpus striatum Present
        Influences
        • dopamine
        Present
        Present
        dentate gyrus of hippocampus Present
        dentate nucleus Present
        frontal lobe Present
        Influences
        • acetylcholine
        Present
        Influences
        • acetylcholine
        Present
        Influences
        • acetylcholine
        Present
        Influences
        • glutamate
        • L-aspartate
        • acetylcholine
        Present
        Influences
        • acetylcholine
        • cholecystokinin
        Present
        Influences
        • acetylcholine
        glial cell of peripheral nervous system Present
        Golgi cell Present
        Phenotypes
        • regulation of inhibitory postsynaptic membrane potential
        Present
        Phenotypes
        • regulation of inhibitory postsynaptic membrane potential
        granular layer of cerebellar cortex Present
        Present
        Phenotypes
        • regulation of excitatory postsynaptic membrane potential
        Present
        Phenotypes
        • regulation of excitatory postsynaptic membrane potential
        heart Present
        Phenotypes
        • negative regulation of apoptosis
        hippocampus Present
        Phenotypes
        • supression of cAMP production
        Present
        Present
        Present
        Present
        Influences
        • GABA
        Present
        Influences
        • acetylcholine
        • norepinephrine
        Present
        Influences
        • sAPPalpha
        hypothalamus Present
        isocortex Present
        kidney Present
        Phenotypes
        • renal system process involved in regulation of blood volume
        liver Present
        Present
        Phenotypes
        • liver regeneration
        muscularis of bronchus Present
        Phenotypes
        • smooth muscle contraction
        Present
        nucleus accumbens Present
        Influences
        • dopamine
        Present
        Influences
        • cocaine- and amphetamine-regulated transcript protein
        platelet Present
        Phenotypes
        • platelet aggregation
        • regulation of serum calcium levels
        posterior raphe nucleus of midbrain Present
        Influences
        • serotonin
        Purkinje cell Present
        Present
        Phenotypes
        • regulation of inhibitory postsynaptic membrane potential
        Present
        Phenotypes
        • regulation of inhibitory postsynaptic membrane potential
        putamen Present
        pyramidal layer of hippocampus Present
        Phenotypes
        • anxiety behavior
        Present
        Present
        smooth muscle cell Present
        Phenotypes
        • vasoconstriction
        stomach Present
        Phenotypes
        • gastro-intestinal system smooth muscle contraction
        substantia nigra Present
        Influences
        • GABA
        Present
        Phenotypes
        • optpkinetic behavior
        suprachiasmatic nucleus of hypothalamus Present
        Phenotypes
        • regulation of circadian rhythm
        vascularendothelial cell Present
        Phenotypes
        • carcinoid syndrome
        Reference