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Author Spotlight: Methodologies and Advancements of Chronic Pain Management Research
Published on: January 5, 2024
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Multimechanistic Single-Entity Combinations for Chronic Pain Control: A Narrative Review
Joseph Pergolizzi1, Peter Magnusson2,3, Flaminia Coluzzi4
1Cardiology, Native Cardio Inc., Naples, USA.
Cureus
|July 20, 2022
Summary
Atypical opioids like tramadol, tapentadol, and cebranopadol offer novel pain relief by combining multiple actions in one molecule. These agents show promise for various pain types with potentially fewer side effects and reduced pill burden.
Area of Science:
- Pharmacology
- Medicinal Chemistry
- Pain Management
Background:
- Atypical opioids, including tramadol, tapentadol, and cebranopadol, represent a novel class of analgesics.
- These synthetic small molecules integrate dual mechanisms of action within a single compound.
- Tramadol and tapentadol are commercially available in immediate-release (IR) and extended-release (ER) formulations, while cebranopadol is an investigational agent.
Purpose of the Study:
- To review the pharmacological profiles and clinical applications of atypical opioids.
- To compare the mechanisms of action, efficacy, and safety of tramadol, tapentadol, and cebranopadol.
- To highlight the potential benefits of these single-entity agents in managing various pain conditions.
Main Methods:
- Review of existing literature on tramadol, tapentadol, and cebranopadol.
- Analysis of pharmacological data, including receptor binding and neurotransmitter reuptake inhibition.
- Examination of clinical trial results regarding safety, efficacy, and side effect profiles.
Main Results:
- Tramadol acts as a prodrug, with active metabolites inhibiting serotonin and norepinephrine reuptake.
- Tapentadol is a direct-acting mu-opioid receptor agonist that also inhibits noradrenaline reuptake.
- Cebranopadol uniquely combines mu-opioid receptor (MOR) agonism with nociception/orphanin (NOP) peptide receptor activity, and may act as a partial kappa-opioid receptor agonist.
- Clinical studies support the safety and efficacy of tramadol and tapentadol, with promising early data for cebranopadol.
- Potential side effects include serotonin toxicity with tramadol; misuse is noted in specific regions.
- Patient rotation between these agents has been successful.
Conclusions:
- Atypical opioids offer a promising therapeutic option for both cancer and non-cancer pain.
- Their multi-modal action within a single molecule may lead to improved analgesia with a potentially better side effect profile and reduced pill burden.
- Further research on cebranopadol is warranted, but all three agents demonstrate significant potential in pain management.
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