电针对胫神经中不同纤维成分再生的促进作用

本文用HRP法,观察损伤大鼠左侧胫神经,电针患侧“环跳”和“三阴交”穴.在手术后15天,电针组脊神经节及脊髓前角内标记细胞数量较同期对照组显著增多。我们认为:(1)电针对胫神经干中感觉纤维及躯体运动纤维终末向各自支配区的再生具有明显地促进作用;(2)阳极电极置于环跳穴,阴极置三阴交穴,以电脉冲形式刺激神经干,此电针法对神经再生的促进作用可能具有独特的双重效果。

Electroacupuncture Promots the Regeneration of Different Fibers in Rat's Tibial Nerve.

METHODS:45 rats(150-200g)were divided into 9 groups.The experimental steps as fol-lows:(1)injured left tibial nerve(group 1-8)and sham operation(group 9);(2)three days afteroperation,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 3,4/15days,group 5,6/20 days,group 7,8,9/25 days),48h before sacrifice,the left femoral nerve wascut,HRP was injected into the hypodermis of paw pad and gastrocnemius;(4)observe HRP la-belled cells in the lumber sympathetic ganglia,ganglion spinale(L4-6)and cornu ventrale ofspinal cord(L3-S3).RESULTS:EA 7 days,2-5 labeled cells were only found in ganglion spinalesof group 1;EA for 12 days,the more HRP lablled cells were observed in the lumber sympatheticganglions((?)=2.6),ganglion spinales((?)=4.8)and cornu ventrale((?)=6)of group 3 as com-pared with group 4(P<0.05);25 days after operation,the quantity of labeled cells in group 8was close to group 9.CONCLUSION:(1)EA promote the regeneration of three or more kinds offibers in tibial nerve;(2)The regeneration velocity of sensory fibers was faster than sympatheticand somatic efferent fibers.