Electroacupuncture at the inner wrist point most effectively improved heart injury markers by restoring potassium-channel proteins linked to cardiac electrical recovery.
Mice with chemically induced heart ischemia were assigned to untreated, inner wrist point, forearm point, lower-leg point, or non-point electroacupuncture groups, alongside healthy controls. Electroacupuncture was delivered after induction of injury, and heart electrical activity was assessed through electrocardiography while protein levels of several potassium-channel components were measured using immunoblotting.
Heart ischemia reduced potassium-channel protein expression and produced abnormal electrocardiogram T waves. Stimulation at the inner wrist point restored these proteins and improved electrical abnormalities more strongly than stimulation at the forearm or lower-leg points, whereas stimulation away from recognised acupuncture points produced no meaningful benefit.
