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Related Concept Videos

Depressants01:28

Depressants

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Depressant drugs, including alcohol and sedative-hypnotics, diminish central nervous system activity by enhancing the action of gamma-aminobutyric acid (GABA), a neurotransmitter that reduces brain activity and promotes relaxation. These substances can have various therapeutic uses but also pose significant risks, especially when misused or combined.
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Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...
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Analgesia and Pain Management01:25

Analgesia and Pain Management

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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

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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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Opioid Analgesics: Morphine and Other Natural Cogeners01:20

Opioid Analgesics: Morphine and Other Natural Cogeners

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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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Opioid Receptors: Overview01:22

Opioid Receptors: Overview

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Opioid receptors, including the mu (μ, MOR), delta (δ, DOR), and kappa (κ, KOR) types, belong to the rhodopsin family of G protein-coupled receptors. These receptors are located throughout the central and peripheral nervous systems and in non-neuronal tissues such as macrophages and astrocytes. Opioid receptor ligands can be categorized into agonists or antagonists. Highly selective agonists include [d-Ala2, MePhe4, Gly(ol)5]-enkephalin or DAMGO for MOR, [D-Pen2,...
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Related Experiment Video

Updated: Oct 14, 2025

Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder
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Elevated customary alcohol consumption attenuates opioid effects.

Monique M Cherrier1, Danny D Shen2, Laura Shireman2

  • 1Department of Psychiatry and Behavioral Sciences, School of Medicine, University of Washington, Seattle, WA 98195, United States of America.

Pharmacology, Biochemistry, and Behavior
|November 7, 2021
PubMed
Summary
This summary is machine-generated.

Elevated alcohol consumption in adults can lessen opioid effects like pupil changes and cognitive impairment. Gender also impacts how individuals experience these drug effects.

Keywords:
AgingAlcoholAttenuationCognitionElderlyMiosisOpioidOxycodonePain

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Area of Science:

  • Pharmacology
  • Neuroscience
  • Gerontology

Background:

  • Rising alcohol consumption among older adults presents challenges for pain management.
  • Alcohol may alter pain perception and responses to pain medications.

Purpose of the Study:

  • To investigate the effects of elevated alcohol consumption on cognitive, analgesic, and side effect responses to oxycodone.
  • To examine these effects in middle-aged and older adults within a controlled laboratory setting.

Main Methods:

  • Participants (age 35-85) underwent assessments after a single oxycodone dose following one day of alcohol abstinence.
  • Measurements included cognitive function, pain response (Cold Pressor Test), pupil size, and plasma oxycodone levels.
  • Questionnaires assessed subjective side effects at multiple time points post-dose.

Main Results:

  • Elevated alcohol consumption was linked to reduced opioid-induced pupil constriction and cognitive decline (working memory, attention, inhibitory control).
  • Participants with higher alcohol intake reported fewer subjective negative effects and more positive effects.
  • Oxycodone pharmacokinetics and pain tolerance were similar across alcohol consumption groups; gender influenced subjective effects.

Conclusions:

  • Higher alcohol intake attenuates central opioid effects, independent of age.
  • Gender significantly influences subjective responses to opioid medications.
  • Clinicians should consider patient alcohol consumption and gender when prescribing opioids.