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English Abstract
Journal Article
[Comparative Observation on Electroacupuncture and Manual Acupuncture in Rabbits with Facial Nerve Injury by Electron Microscope].
Zhen Ci Yan Jiu = Acupuncture Research 2017 October 26
OBJECTIVE: To observe the effect of manual acupuncture and electroacupuncture (EA) on ultrastructure of facial nerve Schwann cells, myelin sheath and mitochondria in facial nerve injury rabbits, so as to explore its mechanism underlying improving facial palsy.
METHODS: A total of 50 New Zealand rabbits were randomly divided into normal, sham-operation, model, MA and EA groups (n=10 in each group). Facial nerve injury model was made by clamping the facial nerve for 5 min using a pair of forceps. Manual needle stimulation (mild reinforcing-reducing) or EA (continuous wave, 20 Hz) was applied to "Dicang" (ST 4), "Xiaguan" (ST 7), "Taiyang" (EX-HN 5) and "Yangbai" (GB 14) on the injured sides for 4 weeks, 30 min each day. The facial nerve motion score was performed every 7 days. The ultrastructure of facial nerve was observed by electron microscope after 28 days' treatment.
RESULTS: There were no significant differences in behavioral score and ultrastructure in normal and sham-operation groups (P<0.05). Compared with the normal group, facial nerve motion scores, ultrastructural morphological changes and the number of axons per unit area, myelin sheath thickness and axon area were worse in the model group (P<0.05). After treatment, facial nerve motion scores, ultrastructural morphological changes and the number of axons per unit area, myelin sheath thickness and axon area in the two treatment groups were better than those in the model group (P<0.05), and EA worked better than MA (P<0.05).
CONCLUSIONS: In the treatment of facial nerve injury, EA can promote axoplasmic mitochondrial proliferation, myelin sheath recovery and axonal regeneration more effectively than MA, which may be one of the mechanisms that EA therapy is superior to MA.
METHODS: A total of 50 New Zealand rabbits were randomly divided into normal, sham-operation, model, MA and EA groups (n=10 in each group). Facial nerve injury model was made by clamping the facial nerve for 5 min using a pair of forceps. Manual needle stimulation (mild reinforcing-reducing) or EA (continuous wave, 20 Hz) was applied to "Dicang" (ST 4), "Xiaguan" (ST 7), "Taiyang" (EX-HN 5) and "Yangbai" (GB 14) on the injured sides for 4 weeks, 30 min each day. The facial nerve motion score was performed every 7 days. The ultrastructure of facial nerve was observed by electron microscope after 28 days' treatment.
RESULTS: There were no significant differences in behavioral score and ultrastructure in normal and sham-operation groups (P<0.05). Compared with the normal group, facial nerve motion scores, ultrastructural morphological changes and the number of axons per unit area, myelin sheath thickness and axon area were worse in the model group (P<0.05). After treatment, facial nerve motion scores, ultrastructural morphological changes and the number of axons per unit area, myelin sheath thickness and axon area in the two treatment groups were better than those in the model group (P<0.05), and EA worked better than MA (P<0.05).
CONCLUSIONS: In the treatment of facial nerve injury, EA can promote axoplasmic mitochondrial proliferation, myelin sheath recovery and axonal regeneration more effectively than MA, which may be one of the mechanisms that EA therapy is superior to MA.
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