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Basic opioid pharmacology: an update.

Hasan Pathan1, John Williams2

  • 1Royal Derby Hospital, Derby, UK.

British Journal of Pain
|October 31, 2015
PubMed
Summary
This summary is machine-generated.

Opioid analgesics target classical opioid receptors (DOP, KOP, MOP) and the novel NOP receptor for pain relief. These compounds, acting as agonists or antagonists, are classified by their synthesis, including alkaloids, semi-synthetic, and synthetic agents.

Keywords:
Analgesicsopioid classificationopioid/pharmacologypharmacokinetics

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Area of Science:

  • Pharmacology
  • Neuroscience
  • Medicinal Chemistry

Background:

  • Opioids are widely utilized analgesics in clinical settings.
  • Three classical opioid receptors (DOP, KOP, MOP) and a novel NOP receptor exist.
  • The NOP receptor represents a distinct, non-opioid pathway within the broader opioid receptor family.

Purpose of the Study:

  • To review the classification and mechanisms of opioid action.
  • To elucidate the roles of different opioid receptors in analgesia.
  • To categorize opioids based on their synthetic origins.

Main Methods:

  • Review of existing literature on opioid pharmacology.
  • Analysis of opioid receptor interactions (agonist, antagonist, partial agonist).
  • Classification of opioids by synthesis: alkaloids, semi-synthetic, and synthetic compounds.

Main Results:

  • Opioid agonists activate G-protein coupled receptors, leading to cellular hyperpolarization.
  • Clinically significant opioid analgesics primarily act as agonists at MOP receptors in the central and peripheral nervous systems.
  • Opioids are diverse, encompassing natural alkaloids, semi-synthetic derivatives, and fully synthetic molecules.

Conclusions:

  • Opioid receptor pharmacology is complex, involving multiple receptor types and signaling pathways.
  • Understanding opioid receptor interactions is crucial for developing effective analgesics.
  • The classification of opioids by synthesis aids in comprehending their diverse origins and properties.