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Related Concept Videos

Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists01:23

Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists

Serotonin, a crucial neurotransmitter synthesized by enterochromaffin cells, plays a cardinal role in regulating gastrointestinal (GI) motility. With over 90% of the body's total serotonin in the GI tract, its influence on digestive processes is profound. Serotonin is swiftly released upon various stimuli, such as food boluses or certain drugs, triggering intrinsic sensory neurons in the myenteric plexus and extrinsic vagal and spinal sensory neurons. This leads to the activation of the...
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Neurotransmitters

Neurotransmitters are essential chemical messengers within the nervous system, facilitating the communication between neurons. These chemical messengers, varying in function and effect, are critical for sustaining various aspects of neurological health and emotional well-being.
Neurotransmitters01:30

Neurotransmitters

Neurotransmitters play a crucial role in the communication between neurons in the autonomic nervous system. Neurons in the autonomic nervous system can be cholinergic or adrenergic depending on the neurotransmitters synthesized. Cholinergic neurons use acetylcholine as their primary neurotransmitter. This includes all the preganglionic fibers of the sympathetic and pre- and postganglionic fibers of the parasympathetic nervous systems. In addition, neurons of the somatic nervous system also use...
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Functional Brain Systems: Reticular Formation

The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
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Antidepressant Drugs: Tricyclics, SSRIs, and SNRIs

Tricyclic Antidepressants (TCAs), including Desipramine (Norpramin), Imipramine (Tofranil), Clomipramine (Anafranil), and Amitriptyline (Elavil), inhibit serotonin and norepinephrine reuptake and also block other receptors. They are used for depression, pain conditions, and insomnia. Common adverse effects include anticholinergic effects, sedation, orthostatic hypotension, and weight gain. They have a narrow therapeutic window and so require plasma-level monitoring. Abrupt discontinuation can...
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G-protein coupled receptors are ligand binding receptors that indirectly affect changes in the cell. The actual receptor is a single polypeptide that transverses the cell membrane seven times creating intracellular and extracellular loops. The extracellular loops create a ligand specific pocket which binds to neurotransmitters or hormones. The intracellular loops holds onto the G-protein.

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Related Experiment Video

Updated: May 17, 2026

Rapid In Situ Hybridization using Oligonucleotide Probes on Paraformaldehyde-prefixed Brain of Rats with Serotonin Syndrome
08:49

Rapid In Situ Hybridization using Oligonucleotide Probes on Paraformaldehyde-prefixed Brain of Rats with Serotonin Syndrome

Published on: September 23, 2015

Serotonin: from top to bottom.

Sara Fidalgo1, Dobril K Ivanov, Shona H Wood

  • 1School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK.

Biogerontology
|October 27, 2012
PubMed
Summary
This summary is machine-generated.

Serotonin, a key neurotransmitter, influences aging and disease. This review explores serotonin

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Published on: November 27, 2016

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Thermostabilization, Expression, Purification, and Crystallization of the Human Serotonin Transporter Bound to S-citalopram

Published on: November 27, 2016

Area of Science:

  • Neuroscience and Aging Research
  • Molecular Biology and Disease Mechanisms

Background:

  • Serotonin (5-HT) is a conserved monoamine neurotransmitter vital for numerous physiological functions.
  • Age-related decline in serotonin systems is linked to diseases like diabetes and cardiovascular conditions.
  • Understanding serotonin's role in aging is crucial due to its impact on behavior and physiology.

Purpose of the Study:

  • To comprehensively analyze serotonin's distribution, function, and interactions across multiple organ systems.
  • To elucidate the link between serotonin function, aging, and the pathology of age-related diseases.
  • To explore microRNA regulation of serotonin and its therapeutic potential in aging.

Main Methods:

  • Literature review and comprehensive analysis of existing research on serotonin and aging.
  • Examination of serotonin's role in the brain, gastrointestinal, skeletal, vascular, and immune systems.
  • Discussion of microRNA regulation and potential pharmacological interventions.

Main Results:

  • Serotonin function is intricately linked to aging processes across various physiological systems.
  • Dysregulation of serotonin contributes to the pathology of age-related diseases.
  • MicroRNAs play a significant role in regulating serotonin, with implications for aging.

Conclusions:

  • Serotonin is implicated in whole-body aging through its systemic effects and interactions.
  • Targeting serotonin pathways, potentially modulated by microRNAs, offers therapeutic avenues for age-related diseases.
  • Further research is needed to fully understand and leverage these complex links.