Immune cells at injury sites release opioid peptides that control pain locally through peripheral opioid receptors — a clinically exploitable mechanism for pain relief without central side effects like addiction and sedation.
Key findingPeripheral endogenous opioid analgesia from immune cell-released peptides at inflammation sites provides clinically significant pain control through p
What the researchers found
Peripheral endogenous opioid analgesia from immune cell-released peptides at inflammation sites provides clinically significant pain control through peripheral opioid receptors, exploitable with intra-articular, topical, and peripherally-restricted opioid drugs without CNS side effects.
Why it matters
Relevant for opioid-peptides, pain, inflammation, immune-function.
How the study worked
review study on opioid-peptides, pain.
What this study cannot tell us
See abstract.
How to read the evidence
moderate evidence.
When this study was published
Published in 2005.
The bigger picture
Advances peptide research with clinical implications.
Questions still open
- Further research needed.
- Clinical translation to evaluate.
Common questions
What was studied?
What was found?
Read the original research
Endogenous opioid analgesia in peripheral tissues and the clinical implications for pain control.
Therapeutics and clinical risk management, 1(4), 279-97
Citation
Kapitzke, Daniel; Vetter, Irina; Cabot, Peter J. (2005). Endogenous opioid analgesia in peripheral tissues and the clinical implications for pain control.. Therapeutics and clinical risk management, 1(4), 279-97.