促红细胞生成素促进坐骨神经再生的实验研究

目的 探讨人重组促红细胞生成素(rh-EPO)对大鼠坐骨神经断裂后神经再生的作用.方法 选用健康雄性Wistar大鼠36只,制备大鼠左侧坐骨神经修复模型.实验动物随机分为2组,每组18只,EPO组:腹腔注射rh-EPO 3 000 U/kg;对照组:注射同体积的生理盐水.术后第4周、8周分别进行坐骨神经功能指数(SFI)、生物力学检测、组织学观察、电生理检测、有髓纤维密度密度测定、有髓纤维截面积测定.结果 术后第4周,EPO组和对照组SFI分别为-65.26±3.42和-70.83±4.12,最大抗牵拉强度分别为(3.86±0.29)N/mm2和(3.38±0.21)N/mm2,运动神经潜伏期延迟比分别为2.34±0.23和2.78±0.29,运动神经波幅恢复比分别为0.23±0.05和0.14±0.03;术后第8周,EPO组和对照组SFI分别为-51.34±2.98和-57.23±4.86,最大抗牵拉强度分别为(4.67±0.36)N/mm2和(4.13±0.32)N/mm2,运动神经潜伏期延迟比分别为1.32±0.15和1.62±0.21,运动神经波幅恢复比分别为0.41±0.09和0.26±0.07,神经纤维通过比分别为0.57±0.05和0.38±0.03,有髓纤维截面积恢复比分别为0.81±0.06和0.58±0.03,两组之间差异均有统计学意义(P＜0.05),EPO组均优于对照组.结论 rh-EPO能促进坐骨神经再生和功能恢复.

Abstract：

Objective To investigate the effect of recombinant human erythropoietin(rh-EPO) on the nerve regeneration of adult rats sciatic nerves. Methods Tirty-six healthy male Wistar rats were involved and left sciatic nerve repaired model was used.The experimental rats were divided randomly into two groups:the EPO group and the control group,18 rats in each group.rh-EPO 3 000 U/kg was injected daily into the abdominal in EPO group,and normal saline was injected into the abdominal every day after operation in control group.On 4 and 8 weeks after operation,these items were determined,the sciatic function index (SFI),biomechanics examination,histological observation,electrophysiological examination,myelinated fibers density and sectional area measurement.Results On weeks 4 after operation,the SFI of EPO group and control group were-65.26 ± 3.42 and-70.83 ± 4.12,respectively,the maximum tensile resistance were (3.86 ± 0.29)N/mm2 and (3.38 ± 0.21 )N/mm2,the delayed ratio of latency of motor nerve were 2.34 ± 0.23 and 2.78 ± 0.29,and the recovery ratio of wave amplitude were 0.23 ± 0.05 and 0.14 ± 0.03 respectively.On eight weeks after operation,the SFI of EPO group and control group were-51.34 ± 2.98 and-57.23 ± 4.86,respcetively,the maximum tensile resistance were (4.67 ± 0.36) N/mm2 and (4.13 ± 0.32) N/mm2,the delayed ratio of latency of motor nerve were 1.32 ± 0.15 and 1.62 ± 0.21,the recovery ratio of wave amplitude were 0.41 ± 0.09 and 0.26 ± 0.07,the nerve fibers cross ratio were 0.57 ± 0.05 and 0.38 ± 0.03,and the recovery ratio of sectional area of myelinated fibers were 0.81 ± 0.06 and 0.58 ± 0.03,respectively.Those items in EPO group were significantly superior to those in the control group (P ＜ 0.05 ＝.Conclusion rh-EPO can promote the injured nerve regeneration and improve the recovery of their function.     

促红细胞生成素促进坐骨神经再生的实验研究

Objective To investigate the effect of recombinant human erythropoietin(rh-EPO) on the nerve regeneration of adult rats sciatic nerves. Methods Tirty-six healthy male Wistar rats were involved and left sciatic nerve repaired model was used.The experimental rats were divided randomly into two groups:the EPO group and the control group,18 rats in each group.rh-EPO 3 000 U/kg was injected daily into the abdominal in EPO group,and normal saline was injected into the abdominal every day after operation in control group.On 4 and 8 weeks after operation,these items were determined,the sciatic function index (SFI),biomechanics examination,histological observation,electrophysiological examination,myelinated fibers density and sectional area measurement.Results On weeks 4 after operation,the SFI of EPO group and control group were-65.26 ± 3.42 and-70.83 ± 4.12,respectively,the maximum tensile resistance were (3.86 ± 0.29)N/mm2 and (3.38 ± 0.21 )N/mm2,the delayed ratio of latency of motor nerve were 2.34 ± 0.23 and 2.78 ± 0.29,and the recovery ratio of wave amplitude were 0.23 ± 0.05 and 0.14 ± 0.03 respectively.On eight weeks after operation,the SFI of EPO group and control group were-51.34 ± 2.98 and-57.23 ± 4.86,respcetively,the maximum tensile resistance were (4.67 ± 0.36) N/mm2 and (4.13 ± 0.32) N/mm2,the delayed ratio of latency of motor nerve were 1.32 ± 0.15 and 1.62 ± 0.21,the recovery ratio of wave amplitude were 0.41 ± 0.09 and 0.26 ± 0.07,the nerve fibers cross ratio were 0.57 ± 0.05 and 0.38 ± 0.03,and the recovery ratio of sectional area of myelinated fibers were 0.81 ± 0.06 and 0.58 ± 0.03,respectively.Those items in EPO group were significantly superior to those in the control group (P ＜ 0.05 ＝.Conclusion rh-EPO can promote the injured nerve regeneration and improve the recovery of their function.     

促红细胞生成素促进坐骨神经再生的实验研究

Objective To investigate the effect of recombinant human erythropoietin(rh-EPO) on the nerve regeneration of adult rats sciatic nerves. Methods Tirty-six healthy male Wistar rats were involved and left sciatic nerve repaired model was used.The experimental rats were divided randomly into two groups:the EPO group and the control group,18 rats in each group.rh-EPO 3 000 U/kg was injected daily into the abdominal in EPO group,and normal saline was injected into the abdominal every day after operation in control group.On 4 and 8 weeks after operation,these items were determined,the sciatic function index (SFI),biomechanics examination,histological observation,electrophysiological examination,myelinated fibers density and sectional area measurement.Results On weeks 4 after operation,the SFI of EPO group and control group were-65.26 ± 3.42 and-70.83 ± 4.12,respectively,the maximum tensile resistance were (3.86 ± 0.29)N/mm2 and (3.38 ± 0.21 )N/mm2,the delayed ratio of latency of motor nerve were 2.34 ± 0.23 and 2.78 ± 0.29,and the recovery ratio of wave amplitude were 0.23 ± 0.05 and 0.14 ± 0.03 respectively.On eight weeks after operation,the SFI of EPO group and control group were-51.34 ± 2.98 and-57.23 ± 4.86,respcetively,the maximum tensile resistance were (4.67 ± 0.36) N/mm2 and (4.13 ± 0.32) N/mm2,the delayed ratio of latency of motor nerve were 1.32 ± 0.15 and 1.62 ± 0.21,the recovery ratio of wave amplitude were 0.41 ± 0.09 and 0.26 ± 0.07,the nerve fibers cross ratio were 0.57 ± 0.05 and 0.38 ± 0.03,and the recovery ratio of sectional area of myelinated fibers were 0.81 ± 0.06 and 0.58 ± 0.03,respectively.Those items in EPO group were significantly superior to those in the control group (P ＜ 0.05 ＝.Conclusion rh-EPO can promote the injured nerve regeneration and improve the recovery of their function.     

促红细胞生成素对大鼠坐骨神经损伤后炎性反应和细胞凋亡的影响

目的 探讨促红细胞生成素(EPO)对大鼠坐骨神经损伤后炎性反应和细胞凋亡的影响及其作用机制,为周围神经损伤的临床治疗提供实验依据.方法 雌性SD大鼠36只,制备大鼠左侧坐骨神经缺损模型,随机分为3组,即EPO组、神经生长因子(NGF)组和生理盐水(NS)组.EPO组、NGF组和NS组分别于术后立即及每日腹腔注射FPO、NGF和NS.术后7、14 d,HE染色光镜下观察L5背根神经节细胞形态变化;应用RT-PCR检测损伤近、远端坐骨神经IL-6和TNF-α mRNA的表达;以TUNEL法检测L5背根神经节细胞凋亡.结果 术后7、14 d,EPO组近、远端坐骨神经IL-6mRNA表达低于NS组,差异有统计学意义(P＜0.01);EPO组远端坐骨神经IL-6 mRNA表达低于NGF组,差异有统计学意义(P＜0.01).术后7d,EPO组近、远端坐骨神经TNF-α mRNA表达低于NS组和NGF组,差异有统计学意义(P＜0.01);术后14 d,EPO组远端坐骨神经TNF-α mRNA表达低于NS组,差异有统计学意义(P＜0.05).术后7、14 d,EPO组凋亡细胞数低于NS组,差异有统计学意义(P＜0.01);术后14 d,EPO组凋亡细胞数低于NGF组,差异有统计学意义(P＜0.05).结论 EPO可能通过减少致炎因子IL-6和TNF-α释放,减轻炎性反应,抑制细胞凋亡,对大鼠坐骨神经损伤发挥保护作用.     

银杏叶提取物促进大鼠坐骨神经再生的实验研究

研究显示 ,银杏叶提取物 (ｅｘｔｒａｃｔｏｆｌｅａｖｅＧｉｎｋｇｏｂｉｌｏｂａ,ＥＧｂ)具有良好的神经保护作用[1 4 ] 。我们进行了ＥＧｂ对神经再生影响的研究。1.材料与方法 :雄性ＳＤ大白鼠 48只 ,随机分成损伤实验组 (ｎ =2 4)和对照组 (ｎ =2 4) ,ＥＧｂ由美国ＰＨＡＲＭＡＮＥＸＩＮＣ公司提供。制作坐骨神经挤压伤模型 ,术后对照组给予生理盐水 2ｍｌ灌胃 ,实验组给予ＥＧｂ 2 0ｍｇ (溶于 2ｍｌ生理盐水中 )灌胃。分别于术后第 2、4、6周作以下观察 :坐骨神经功能指数(ＳＦＩ) ;电生理检测 :用ＥｓａｏｔｅＰｈａｓｉｓ肌电仪测…     

促红细胞生成素对脂多糖所致大鼠肾脏损伤的保护作用

目的利用脂多糖（LPS）建立大鼠内毒素血症导致肾脏损伤模型,探讨促红细胞生成素（EPO）对肾脏损伤的保护作用及可能机制,为防治内毒素引起的肾脏损伤提供依据。方法将40只成年Wistar大鼠随机分成空白对照组、EPO对照组、LPS组和LPS＋EPO组。LPS组和LPS＋EPO组大鼠尾静脉注射LPS（10 mg/kg）建立肾脏损伤模型,对照组给予同等量生理盐水,30 min后,EPO对照组和LPS＋EPO组给予rh EPO（5 000 U/kg）经尾静脉注射。其余两组大鼠给予生理盐水。在LPS注射后的6 h和24 h每组分别处死5只大鼠,生化分析仪测定大鼠血清尿素氮（BUN）和肌酐（Cr）水平,放射免疫方法测定大鼠血清肿瘤坏死因子-α（TNF-α）水平。注射后24 h处死大鼠制备肾组织切片,HE染色后光镜下观察大鼠肾脏病理结构改变,透射电子显微镜观察大鼠肾脏超微结构改变。应用免疫印记方法检测大鼠肾脏丙氨酸氨基转移酶（AKT）、磷酸化丙氨酸氨基转移酶（p-AKT）以及核因子-κB（NF-κB）表达水平。结果与对照组比较,LPS组和LPS＋EPO组大鼠血清BUN、Cr和TNF-α水平升高（P均〈0.05）;LPS组以上3个指标升高程度显著高于LPS＋EPO组（P均〈0.05）。与对照组比较,LPS组p-AKT和p-AKT/AKT表达增强（p-AKTP=0.000、p-AKT/AKTP=0.000）、NF-κB表达增强（P=0.012）;与LPS组比较,LPS＋EPO组p-AKT和p-AKT/AKT表达下降（p-AKTP=0.002、p-AKT/AKTP=0.005）,NF-κB表达下降（P=0.066）。光镜下LPS组肾小管上皮细胞坏死、间质水肿和淋巴细胞浸润;LPS＋EPO组亦可见间质水肿和淋巴细胞浸润,但较LPS组减轻。电镜下LPS组肾小管上皮细胞空泡化,线粒体固缩和内皮细胞增生;LPS＋EPO组肾小球滤过膜增厚,远曲小管上皮细胞内线粒体轻度肿胀和溶酶体增多,损伤较LPS组减轻。结论 EPO可通过减轻炎症反应、减轻组织损伤有效的保护LPS导致的肾损伤,其机制可能与磷脂酰肌醇3-激酶?     

促红细胞生成素和羊膜间充质干细胞协同治疗促进脊髓损伤再生

目的 观察促红细胞生成素和羊膜间充质干细胞对脊髓损伤(SCI)的综合治疗效应.方法 60只SD大鼠在T11水平进行脊髓半切术,形成2mm缺损.羊膜间充质干细胞(促红细胞生成素协同治疗为Ⅳ组,无促红细胞生成素协同治疗为Ⅲ组),生理盐水(促红细胞生成素协同治疗为Ⅱ组,无促红细胞生成素的为Ⅰ组)移植入缺损处.用损伤后3个月内的临床运动评分,8周时的细胞增殖、免疫组织化学结果 评价脊髓的修复.结果 临床运动评分,Ⅳ组(12.01±0.62)恢复优于Ⅲ组(9.47±0.36)、Ⅱ组(7.57±0.28),差异有统计学意义(P<0.01).并且Ⅳ组损伤区具有更高密度的5-溴脱氧尿嘧啶核苷(BrdU)阳性细胞(25.34±3.51),损伤脊髓远端有更高水平的抗微管相关蛋白-2(MAP-2)表达(8.47±0.87),其差异有统计学意义(P<0.01).结论 促红细胞生成素和羊膜间充质干细胞对于脊髓损伤有协同治疗作用.

Abstract：

Objective To evaluate the combined effects of erythropoietin and amnion-derived mesenchymal stem cells on spinal cord injury (SCI).Methods In 60 SD rats (n=15 in each group) transverse hemi-section at the T11 level was carried out, leaving an approximately 2-mm gap between the distal and proximal ends of the cord. Amnion-derived mesenchymal stem cells embedded in fibrin glue treated with or without erythropoietin (groups Ⅲ and Ⅳ) or fibrin glue with or without erythropoietin (groups Ⅰ and Ⅱ) were transplanted into the gap in the injured spinal cord. Spinal cord regeneration was assessed using a clinical locomotor rating scale scores (BBB scores) every week after injury, and immunohistochemistry 8 weeks after injury.Results Regeneration was more advanced in group Ⅳ (12.01±0.62) than in groups Ⅲ (9.47±0.36) or Ⅱ (7.57±0.28) according to the clinical motor score (P<0.01). Higher densities of bromodeoxyuridine (25.34±3.51) in the injured area and higher expression levels of MAP-2 (8.47±0.87) over the distal end of the injured spinal cord were observed in group Ⅳ than in groups Ⅱ or Ⅲ (P<0.01).Conclusion This synergy between erythropoietin and amnion-derived mesenchymal stem cells may be due to increased proliferation of progenitor cells in the injured area and increased expression of neuronal stem cell markers in the distal end of the injured cord.     

促红细胞生成素的研究进展

本文对促红细胞生成素的生成、调节以及相关作用的研究进展进行了较为详细和系统的阐述.     

促红细胞生成素(EPO)对神经细胞的保护作用

促红细胞生成素是一种多功能的营养因子,目前发现EPO对脊髓损伤有良好的神经保护作用.本文回顾了国内外近年来促红细胞生成素(EPO)对脊髓损伤的的研究进展,对EPO可能的神经保护机制作一综述.     

促红细胞生成素抗体相关性纯红细胞再障

本文对慢性肾功能衰竭患者应用促红细胞生成素所致促红细胞生成素抗体相关性纯红细胞再障进行综述.     

电针对大鼠坐骨神经再生影响的功能评价

目的从功能恢复评价电针对神经再生的促进作用。方法建立大鼠坐骨神经损伤模型，将９０只ＳＤ大鼠随机分为损伤对照组和电针组两组。分别于术后２、４、６、１０周测定运动神经传导速度、小腿三头肌肌力及坐骨神经功能指数，并以自身健侧作对照得出其恢复率。同时测定术后１周感觉神经再生的距离。结果电针组术后１周感觉神经再生距离及２、４、６、１０周运动神经传导速度、肌力、ＳＦＩ等的恢复率均明显优于对照组。结论电针可以促进损伤神经的再生，明显提高神经功能的恢复     

坐骨神经不等径小间隙动脉套接吻合后再生时相的组织学观察

目的 观察大鼠坐骨神经不等径小间隙动脉套接吻合后神经再生的时相变化,探讨其神经再生的机制. 方法 选用Wistar大鼠20只,4只作为套接动脉供体,其余16只切断其右下肢坐骨神经作为实验模型,随机分成坐骨神经等径外膜吻合组和不等径小间隙动脉套接吻合组,每组各8只,分别于术后7、14、21、28 d取材,苏木精-伊红(HE)染色,观察两组神经再生时相的变化. 结果 不等径小间隙动脉套接组再生神经术后21d通过小间隙;手术后28 d,不等径小间隙动脉套接组再生的神经较近端数量增加,再生神经是成熟的,排列规整.结论 近端较细小与远端较粗大的神经通过小间隙动脉套接吻合,神经再生出现放大效应,具有储备功能;小间隙动脉套接吻合是发挥神经再生储备功能的有效手段.     

模拟膈神经脉冲电刺激促进周围神经再生的研究

目的　研究膈神经生物电脉冲 (BIPN)对周围神经再生的促进作用。方法　新西兰家兔 18只平均分为 3组 ,切断双侧坐骨神经后端端缝合予以电刺激。A组以BIPN刺激与无刺激对照 ;B组以BIPN刺激与方波脉冲刺激对照 ;C组以方波脉冲刺激与无刺激对照。刺激 4周后行足底溃疡直径、神经电生理、胫前肌肌湿重、组织学和电镜超微结构检测。结果　A、B组BIPN侧足底溃疡直径分别为 (16.3 3± 17.17)mm和 (2 2 .3 3± 7.5 0 )mm ,均优于对照侧 (P <0 .0 1,P <0 .0 5 ) ;复合肌肉诱发电位 (CMAP)潜伏期分别为 (1.98± 0 .2 0 )ms和 (1.92± 0 .16)ms ,均优于对照侧 (P <0 .0 5 ) ;A组CMAP波幅为 (0 .18± 0 .0 7)mV ,优于对照侧 (P <0 .0 5 ) ;远端有髓纤维通过率分别为 (62 .44± 6.68) %和 (5 4.48± 5 .0 5 ) % ,均优于对照侧 (P <0 .0 1) ;胫前肌肌湿重分别为(1.67± 0 .2 4)g和 (1.71± 0 .2 5 )g ,均优于对照侧 (P <0 .0 1) ;超微结构观察示BIPN侧再生髓鞘成熟度优于方波脉冲侧 ,更优于无刺激侧。结论　膈神经电脉冲能较明显地促进周围神经再生。     

Functional recovery of sciatic nerve through inside-out vein graft in rats

Objective: Present study aimed at further comprehensive functional, histomorphometrical and immunohistochemical assessment of peripheral nerve regeneration using rat sciatic nerve transection model.Methods: The 10-mm rat sciatic nerve gap was created in rats. In control group nerve stumps were sutured to adjacent muscle and in treatment group the gap was bridged using an inside-out vein graft. In sham-operated group the nerve was manipulated and left intact. All animals underwent walking track analysis test 4, 8, and 12 weeks after surgery.Subsequently, muscle mass measurement was performed to assess reenervation, histological examination to observe the sciatic nerve regeneration morphologically and immunohistochemistry to detect Schwann cells using anti S-100. Results were analyzed using a factorial ANOVA with two between-subjects factors. Bonferroni test for pairwise comparisons was used to examine the effect of treatments.Results: Functional analysis ofmyelinated nerve fibers showed that nerve function improved significantly in the time course in treatment group. However, quantitative morphometrical analysis of myelinated nerve fibers showed that there was no significant difference between 8 and 12 weeks in treatment group. Muscle weight ratio was bigger and weight loss of the gastrocnemius muscle was ameliorated by inside-out vein grafting. The position of positive immunohistochemical reactions further implied that regenerated axons and Schwann cell-like cells existed after vein grafting was performed, and was accompanied by the process of myelination and structural recovery of regenerated nerves.Conclusion: Functional analysis of peripheral nerve repair is far more reliable than quantitative morphometrical analysis     

银杏叶提取物对坐骨神经再生的影响

目的：研究银杏叶提取物局部应用对坐骨神经再生的影响。方法：选Wistar大鼠32只，随机分为银杏叶提取物组和对照组。在双目放大镜下切断两组大鼠右侧坐骨神经，于神经损伤处和周围肌肉间隙内注射药物后立即行缝合术。2周后进行坐骨神经功能指数、电生理学和组织形态学观测评定。结果：银杏叶提取物组各项指标均优于对照组，其坐骨神经功能指数的恢复、神经纤维的生长速度及数量明显优于对照组。结论：银杏叶提取物局部应用可有效促进大鼠坐骨神经损伤的早期再生，加快神经再生速度与神经功能恢复。     

外源性表皮生长因子促进鼠坐骨神经再生的实验研究

目的 评价外源性表皮生长因子（exogenous epidemal growth factor,EGF）对神经再生的影响。方法 雄性SD大鼠48只,建立成鼠坐骨神经挤压伤模型。按术后注射药物的不同成分2组,每组24只鼠。损伤对照组：在神经损伤处注射生理盐水5μl;EGF组：注射EGF／生理盐水液（10μg/5μl）。于术后2、4、6周3个时间点测定坐骨神经功能指数、CMAP的潜伏期、最大语诱发电位的恢复率、组织学检测、电镜超微结构观察。结果 坐骨神经功能指数恢复率在各时间点,EGF组无明显优于对照组（P＜0．01）。CMAP潜伏期的延迟率,EGF组明显小于对照组（P＜0．01）;诱发电位恢复率EGF组明显好于对照组（P＜0．01）。组织学检查：有髓神经纤维数在术后2、4周时EGF组明显多于对照组（P＜0．01）;各时间点有髓神经纤维直径及截面积,EGF组明显优于对照组（P＜0．01）。超微结构观察：EGF组再生神经的有髓纤维数,髓鞘厚度,髓鞘的成熟度明显好于对照组。结论 外源性EGF对神经的再生和功能恢复有一定的作用。     

同轴共纺复合神经生长因子导管修复大鼠坐骨神经缺损的实验研究

目的 观察同轴共纺复合神经生长因子(NGF)导管对大鼠坐骨神经缺损修复的促进作用.方法 以复合NGF的牛血清白蛋白为芯层、乳酸.己内酯共聚物[P(LLA-CL)]为壳层,采用同轴共纺技术制备具有"壳-芯"结构的可降解纳米纤维复合神经导管.取SD大鼠72只,随机分为四组:自体神经移植组(A组),单纯[P(LLA-CL)]导管组(B组),单纯导管内一次性汴射NGF组(C组)和复合NGF导管组(D组),每组18只.制作大鼠坐骨神经10 mm缺损模型,四组大鼠分别采用白体神经移植、单纯[P(LLA-CL)]导管、单纯导管内一次性注射NGF、复合NGF导管桥接修复缺损.于术后第1、2、3个月行大体观察、坐骨神经功能指数、小腿三头肌湿重恢复率测量、电生理检测和组织学检查. 结果术后复合NGF导管逐渐开始吸水膨胀并降解,3个月时,虽然管壁已经出现裂隙,但依然保持良好的外形,没有对再生神经形成卡压.术后1个月,再生神经均已通过缺损,连接两断端,但较细小;随着时间的延长,再生神经逐渐增粗.各组间比较发现,D组再生神经取得了和A组相似的效果,明显优于B组和C组(P<0.05).尽管D组与A组之间比较.差异无统计学意义(P>0.05),甚至D组的有髓神经纤维计数还稍高于A组,但其髓鞘的厚度和直径不如A组,并且坐骨神经功能指数和腓肠肌湿重恢复率也比A纽稍差. 结论同轴共纺复合NGF神经导管具有良好的组织相容性、生物活性和机械强度,能够有效地促进神经再生,效果接近自体神经移植.     

丙戊酸钠充填导管促进大鼠外周神经再生的实验研究

目的 观察丙戊酸钠(VPA)充填导管对缺损外周神经再生的促进作用.方法 通过建立大鼠坐骨神经缺损模型.用硅胶管(1 cm)进行缺损神经段(0.8 cm)的桥接,局部应用8%VPA注射液10ul,观察VPA对神经再生和运动神经功能恢复的影响.30只大鼠随机分成2组,实验组在硅胶管局部注射VPA注射液;对照组在硅胶管局部注入生理盐水. 结果 术后每只大鼠每2周进行坐骨神经功能指数(SFI)检测,每4周做电生理检查,最后术后12周处死所有大鼠,对坐骨神经进行组织形态学分析.用数字图像分析软件检测有髓神经纤维髓鞘厚度.并对再生神经纤维轴突计数.通过统计软件分析发现SFI,电生理检查,神经组织性形态上两组差异均有统计学意义(P＜0.05). 结论 局部使用VPA于神经缺损的大鼠,可以促进损伤神经的轴突再生和运动功能恢复.因此VPA有望在临床上应用于外周神经损伤病例的治疗.