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December 2022

Zhen Ci Yan Jiu. 1993 ; 18(3): 232-5.

[Electroacupuncture promotes the regeneration of different fibers in rat's tibial nerve]

Kong T, Fan T, Han X, Guo Z, Lei L, Zang J.

Dept. of Anatomy, Henan Medical University, Zhengzhou, China.

METHODS: 45 rats (150-200g) were divided into 9 groups. The experimental steps as follows: (1) injured left tibial nerve (group 1-8) and sham operation (group 9); (2) three days after operation, group 1, 3, 5 and 7 were stimulated with electro-acupuncture (EA) in Huantiao (+) and Sanyinjiao (-); (3) according to different survival time (group 1, 2/10 days, group 3, 4/15 days, group 5, 6/20 days, group 7, 8, 9/25 days), 48h before sacrifice, the left femoral nerve was cut, HRP was injected into the hypodermis of paw pad and gastrocnemius; (4) observe HRP labelled cells in the lumber sympathetic ganglia, ganglion spinale (L4-6) and cornu ventrale of spinal cord (L3-S3). RESULTS: EA 7 days, 2-5 labeled cells were only found in ganglion spinales of group 1; EA for 12 days, the more HRP labeled cells were observed in the lumber sympathetic ganglions (mean = 2.6), ganglion spinales (mean = 4.8) and cornu ventrale (mean = 6) of group 3 as compared with group 4 (P < 0.05); 25 days after operation, the quantity of labeled cells in group 8 was close to group 9. CONCLUSION: (1) EA promote the regeneration of three or more kinds of fibers in tibial nerve; (2) The regeneration velocity of sensory fibers was faster than sympathetic and somatic efferent fibers.

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