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Related Concept Videos

Direct-Acting Cholinergic Agonists: Pharmacological Actions00:59

Direct-Acting Cholinergic Agonists: Pharmacological Actions

Direct-acting cholinergic agonists exert their pharmacological actions by mimicking the effects of acetylcholine on postsynaptic muscarinic receptors to generate parasympathetic responses. These agents elicit a range of physiological responses, including cardiovascular effects. For example, activation of muscarinic receptors induces bradycardia, decreased cardiac output, reduced peripheral resistance, and consequent hypotension. In the eye, stimulation of M3 receptors leads to smooth muscle...
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Adrenergic Agonists: Indirect-Acting Agents

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Skeletal muscle relaxants can target the central nervous system [CNS] to reduce muscle tension or act directly at the neuromuscular junction to induce temporary paralysis. These two classes of muscle relaxants are called centrally acting muscle relaxants and peripherally acting muscle relaxants. They differ in their action, mechanism, administration route, and clinical uses.
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In vitro Functional Characterization of Mouse Colorectal Afferent Endings
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Published on: January 21, 2015

Centrally acting agents and visceral sensitivity.

J Fioramonti1, L Bueno

  • 1NeuroGastroenterology and Nutrition Unit, Institut National de la Recherche Agronomique, 180 Chemin de Tournefeuille, BP 3, 31931 Toulouse, France. jfioramo@toulouse.inra.fr

Gut
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Summary

Centrally acting medications, including antidepressants and opiates, can reduce visceral pain. Central nervous system cytokines may also influence visceral hypersensitivity, offering future therapeutic targets.

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Gastroenterology

Background:

  • Visceral sensitivity is modulated by centrally acting agents.
  • Irritable Bowel Syndrome (IBS) involves visceral hypersensitivity.

Purpose of the Study:

  • To review the mechanisms of centrally acting agents affecting visceral sensitivity.
  • To explore the role of cytokines in visceral hypersensitivity.

Main Methods:

  • Literature review of studies on centrally acting drugs and visceral pain.
  • Examination of evidence for cytokine involvement in central pain modulation.

Main Results:

  • Antidepressants (SSRIs) and opiates (morphine) act on the CNS to reduce visceral nociception.
  • Centrally acting cytokines are implicated in visceral hypersensitivity.

Conclusions:

  • Central nervous system targets, including cytokines, are promising for managing visceral hypersensitivity.
  • Further research into cytokine pathways could yield novel IBS therapies.