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Persistent pain associated with long-term intrathecal morphine administration
W C Parris1, P K Janicki, B Johnson
1Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN 37232-2125, USA.
Southern Medical Journal
|April 1, 1996
Summary
A patient with chronic pain resistant to opioids showed higher levels of morphine-3-glucuronide than morphine-6-glucuronide. This metabolite ratio may explain opioid resistance and guide future pain management strategies.
Area of Science:
- Pain Management
- Neuropharmacology
- Clinical Chemistry
Background:
- Chronic intractable pain poses significant challenges, often becoming refractory to conventional treatments.
- Opioid therapy is a cornerstone for pain management, but opioid resistance can limit its efficacy.
- Morphine metabolism, particularly the ratio of morphine-3-glucuronide (M3G) to morphine-6-glucuronide (M6G), is implicated in analgesic effects and side effects.