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Related Concept Videos

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: Morphine and Other Natural Cogeners01:20

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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 Analgesics: Synthetic and Semisynthetic Opioids01:15

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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Drug Delivery: Parenteral Route01:29

Drug Delivery: Parenteral Route

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The parenteral route is a critical method of drug administration. It delivers compounds directly into the systemic circulation and bypasses the gastrointestinal tract. This approach is particularly advantageous for drugs that exhibit poor absorption or instability when administered orally.
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...
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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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Factors Affecting Drug Response: Overview01:21

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When it comes to infants and young children, they are typically administered smaller doses of medication in comparison to adults. This is primarily because their organ functions still need to fully develop, meaning their bodies are not as efficient at metabolizing or eliminating drugs. Additionally, their blood-brain barrier is more permeable than in adults. As a result, high concentrations of drugs can easily penetrate the central nervous system (CNS), potentially leading to neurological...
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Modeling Brain Metastases Through Intracranial Injection and Magnetic Resonance Imaging
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Practical considerations in opioid use for brain neoplasm.

Michael D Perloff

    Continuum (Minneapolis, Minn.)
    |April 4, 2015
    PubMed
    Summary

    Managing pain in brain tumor patients requires careful opioid selection. Neurologists must balance efficacy and safety, often needing dose escalation for complex cases.

    Area of Science:

    • Neuro-oncology
    • Pain Management
    • Pharmacology

    Background:

    • Neurologists diagnose primary and metastatic brain tumors.
    • Brain tumor patients often have comorbidities and pain, requiring opioid therapy.
    • Opioid use in medically ill patients presents unique challenges.

    Purpose of the Study:

    • To outline strategies for effective and safe opioid use in brain tumor patients.
    • To discuss factors influencing opioid selection and dosing.
    • To highlight the benefits of specific opioid combinations.

    Main Methods:

    • Review of current literature on pain management in neuro-oncology.
    • Analysis of factors influencing opioid pharmacokinetics and pharmacodynamics.
    • Discussion of opioid selection based on patient-specific parameters.

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    Main Results:

    • Brain tumor patients frequently require opioid dose escalation.
    • Opioid selection depends on respiratory, cardiac, and drug clearance capabilities.
    • Tailored opioid combinations can enhance efficacy and reduce risks.

    Conclusions:

    • Individualized opioid therapy is crucial for managing pain in brain tumor patients.
    • Careful selection and combination of opioids can improve outcomes.
    • Mitigating adverse drug reactions, toxicity, abuse, and diversion is paramount.