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Related Concept Videos

Analgesia and Pain Management01:25

Analgesia and Pain Management

Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
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Opioid Analgesics: Synthetic and Semisynthetic Opioids

Synthetic and semisynthetic opioids are pivotal in pain management and tackling opioid addiction. Semisynthetic opioids, including morphinans (morphine derivatives), oxycodone, oxymorphone, hydrocodone, and hydromorphone, have improved pharmacokinetic profiles compared to morphine. Additionally, heroin and 6-MAM (6-Monoacetylmorphine) show better CNS penetration than morphine due to heightened lipid solubility. Hydromorphone, a potent opioid, undergoes hepatic metabolism to form the active...
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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...
Antidepressant Drugs: Overview01:25

Antidepressant Drugs: Overview

Antidepressant drugs are a class of medications primarily used for treating various mood disorders, including major depression, anxiety disorders, and other related conditions. These medicines work by modulating the neurotransmitter balance within the brain, alleviating depressive symptoms. Antidepressants can be broadly categorized into several groups according to their mechanism of action and chemical structure: Selective Serotonin Reuptake Inhibitors (SSRIs), Serotonin-Norepinephrine...
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Opioid Analgesics: Morphine and Other Natural Cogeners

Opioids are a class of drugs that mimic endogenous opioid peptides and act on opioid receptors, and help in pain relief. These compounds are classified as natural, synthetic, or semi-synthetic. Natural opioids, like morphine, codeine, and thebaine, are derived from the opium poppy plant (Papaver somniferum or Papaver album) and are termed opiates. Synthetic opioids are artificial, while semi-synthetic opioids combine natural and synthetic compounds. Morphine, a prototypical opioid, possesses a...

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Intracranial Pharmacotherapy and Pain Assays in Rodents
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Antidepressants as analgesics.

Gary McCleane1

  • 1Rampark Pain Centre, Lurgan, Northern Ireland. gary@mccleane.freeserve.co.uk

CNS Drugs
|January 16, 2008
PubMed
Summary

Antidepressants, particularly tricyclic antidepressants (TCAs), effectively reduce chronic pain by acting on neuroregulatory pain pathways, independent of mood effects. Topical application of TCAs also shows analgesic potential via peripheral mechanisms.

Area of Science:

  • Neuroscience
  • Pharmacology
  • Pain Management

Background:

  • Depression frequently co-occurs with chronic pain.
  • Antidepressant medications are utilized for pain management, with effects beyond mood enhancement.
  • Understanding the mechanisms of antidepressant-induced analgesia is crucial for optimizing pain treatment.

Purpose of the Study:

  • To review the efficacy of various antidepressant classes in pain management.
  • To explore the neurobiological mechanisms underlying antidepressant analgesia.
  • To discuss the role of topical application of antidepressants in pain relief.

Main Methods:

  • Review of existing literature on antidepressant use in pain.
  • Analysis of neuroregulatory pathways involved in pain perception and transmission.

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  • Examination of clinical data on antidepressant efficacy and adverse effects.

    • Main Results:

    • Tricyclic antidepressants (TCAs) and 'balanced' reuptake inhibitors (e.g., duloxetine) show greater efficacy than selective serotonin reuptake inhibitors (SSRIs) for pain relief.
    • Antidepressant analgesia results from actions on neuroregulatory pain mechanisms.
    • Topical application of TCAs demonstrates peripheral analgesic effects.

    Conclusions:

    • Antidepressants are vital therapeutic agents for managing chronic pain.
    • The analgesic effects of antidepressants are mediated through complex neurobiological pathways.
    • Peripheral mechanisms contribute to the analgesic action of certain antidepressants like TCAs.