Ligustrazine Combined with Sinomenine Alleviates Central Sensitization in CCI-Induced Neuropathic Pain in Rats by Restoring Metabolic Homeostasis in the Spinal Dorsal Horn

Background

Neuropathic pain (NP) is a chronic pain condition caused by a lesion or disease of the somatosensory nervous system. Its development and persistence are closely associated with peripheral nociceptive input, central sensitization, neuroimmune dysregulation, and remodeling of the local metabolic microenvironment. Our previous studies demonstrated that combined treatment with ligustrazine and sinomenine ameliorates early sciatic nerve pathological damage and systemic metabolic disturbances in rats with chronic constriction injury (CCI). However, whether this combination modulates central sensitization in NP remains unclear.