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Updated: May 28, 2026

Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities
Published on: July 29, 2014
Influence of morphine on host immunity.
Ming-Cheng Chang1, Shou-Zen Fan, Po-Ni Hsiao
1Department of Anesthesiology, College of Medicine, National Taiwan University, Taipei, Taiwan, R.O.C.
Morphine, used for pain relief and addiction, may suppress the immune system. This review examines morphine
Area of Science:
- Immunology
- Pharmacology
- Pain Management
Background:
- Morphine is a key analgesic and addiction treatment.
- Its immunosuppressive effects are known but poorly understood.
- Clinical observations suggest immunomodulatory roles for morphine.
Purpose of the Study:
- To review current understanding of morphine's effects on host immunity.
- To bridge basic science findings ('bench') with clinical implications ('bedside').
Main Methods:
- Literature review of preclinical and clinical studies.
- Analysis of research on morphine's impact on innate and adaptive immunity.
Main Results:
- Morphine exhibits immunomodulatory capabilities.
- Evidence suggests effects on both innate and adaptive immune responses.
Conclusions:
- Further research is needed to clarify morphine's precise mechanisms of immune modulation.
- Understanding these mechanisms is crucial for optimizing pain management and addiction treatment while mitigating risks.
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