Acupoint electrical stimulation at neiguan and zusanli points on serum cytokines.

If you've ever had surgery for a herniated disc in your lower back, you know that managing pain and stress during recovery can be just as challenging as the procedure itself. A new study published in the journal Medicine explored whether a technique called transcutaneous acupoint electrical stimulation — a non-invasive method that delivers gentle electrical pulses to specific acupuncture points on the skin — could help patients recover more comfortably after lumbar disc herniation surgery.

Researchers focused on two well-known acupuncture points: Neiguan (PC6), located on the inner wrist, and Zusanli (ST36), found just below the knee. Both points have long been used in traditional Chinese medicine to support healing, reduce pain, and calm the nervous system. In this study, patients received the electrical stimulation at one of these two points while under general anesthesia.

The results revealed that the two acupoints work in surprisingly different ways. Stimulation at Zusanli boosted levels of nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF) — proteins that support nerve health and healing. Neiguan stimulation, on the other hand, raised levels of neuropeptide Y (NPY), a chemical linked to stress regulation and pain relief, while also affecting stress hormones like norepinephrine and ACTH. Pain scores also differed meaningfully between the two groups at various points in the first 24 hours after surgery.

What does this mean for you? It suggests that acupuncture point selection truly matters — different points may be better suited to different recovery goals, whether that's nerve repair, pain control, or stress reduction. This opens the door to more personalized approaches to perioperative care.

If you're considering acupuncture or acupoint stimulation as part of your surgical recovery, speak with a licensed and qualified acupuncture practitioner who can tailor treatment to your individual needs.

This study investigated the differential effects of transcutaneous acupoint electrical stimulation (TAES) at PC6 (Neiguan) and ST36 (Zusanli) in patients undergoing posterior spinal surgery for lumbar disc herniation under general anesthesia. Outcomes measured included serum neuroimmune cytokines (NGF, BDNF, NPY), stress response markers (cortisol, epinephrine, norepinephrine, ACTH, vanillylmandelic acid), postoperative pain via VAS at 1, 3, 6, 12, and 24 hours, and psychological state via SAS and SDS scales. ST36 stimulation significantly upregulated BDNF and NGF alongside elevated cortisol, suggesting a neurotrophic and hypothalamic-pituitary-adrenal axis response. PC6 stimulation increased NPY and elevated NE and ACTH, indicating a sympathoadrenal stress-modulating profile with potential analgesic implications. VAS scores diverged significantly between groups at multiple postoperative timepoints. Notably, the ST36 group showed higher SAS and SDS scores postoperatively. These findings underscore the point-specific neuroimmune and autonomic effects of TAES and support individualized acupoint selection strategies in perioperative acupuncture protocols.