A specific molecule involved in maintaining pain after a nerve injury has been identified and blocked in mice by Hiroshima University researchers. These results reveal a promising therapeutic strategy for treating neuropathic pain.
Mice with an injury to their sciatic nerve showed less pain after multiple injections of a drug that blocks the activity of a molecule called high-mobility group box-1 (HMGB1). Researchers also discovered that a single dose of a drug to block the activity of a different molecule, called matrix metalloprotease-9 (MMP-9), could also alleviate pain from the injury.
The chemical pathways that these drugs use to inhibit HMGB1 or MMP-9 are different from common pain relievers, like opioids (Morphine) or acetaminophen (Tylenol).
