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Updated: Jan 24, 2026
07:23
Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities
Published on: July 29, 2014
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Dezocine Alleviates Morphine-Induced Dependence in Rats
Fei-Xiang Wu1,2, Hasan Babazada2, Hao Gao1
1From the Department of Anesthesiology, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China.
Anesthesia and Analgesia
|May 17, 2019
Summary
Dezocine, a nonaddictive opioid, significantly reduced morphine withdrawal symptoms and conditioned place preference in rat models. This suggests dezocine
Area of Science:
- Neuroscience
- Pharmacology
- Addiction Research
Background:
- Opioid dependence poses a significant public health challenge with limited therapeutic options.
- Investigating novel nonaddictive compounds is crucial for developing effective treatments.
- Dezocine is explored for its potential therapeutic effects in opioid dependence.
Purpose of the Study:
- To evaluate the efficacy of dezocine in mitigating morphine withdrawal syndrome in a rat model.
- To assess dezocine's impact on morphine-induced conditioned place preference (CPP).
- To compare the molecular targets of dezocine and buprenorphine.
Main Methods:
- Morphine-dependent rats received intraperitoneal administration of dezocine.
- Withdrawal syndrome and CPP were analyzed using 2-way ANOVA.
- Astrocyte activation, kappa opioid receptor (KOR) internalization, and molecular targets were assessed.
Main Results:
- Dezocine treatment significantly reduced withdrawal scores and inhibited the reinstatement of morphine-induced CPP.
- Dezocine attenuated morphine-induced astrocyte activation in the nucleus accumbens.
- Dezocine blocked agonist-induced KOR internalization and exhibited affinity for norepinephrine and serotonin transporters.
Conclusions:
- Dezocine demonstrates potential as a therapeutic agent for alleviating opioid dependence.
- Its unique molecular target profile, distinct from buprenorphine, offers value in understanding morphine dependence mechanisms.
- Dezocine may contribute to the development of novel therapeutic strategies for opioid use disorder.
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