鞘内注射吗啡加可乐定对切口痛大鼠脊髓背角蛋白激酶A催化亚单位表达的影响

Objective To observe the effect of intrathecal clonidine plus morphine on expression of protein kinase A (PKA) catalytic subunit in the spinal dorsal horn in a rat model of incisional pain. Methods Eighty male Sprague-Dawley rats were divided randomly into five groups: sham group, control group, pre-incisional morphine 2.5 μg group, pro-incisional clonidine 5 μg group and preincisional morphine 2.5 μg plus clonidine 5 lag group (n=16). lntrathecal catheter and the model of incisional pain were pro-duced according to Yaksh and Brennan's described method respectively. Changes of pain behavior were assessed by mechanical with-drawal threshold (MWT) and thermal withdrawal latency(TWL). The expressions of PKA catalytic subunit in the spinal dorsal horn were assessed by immunohistochemical method and western blotting analysis. Results Compared with sham group, MWT and TWL in control group were decreased significantly at 2 h after incision (P<0.01) and the number of positive cells and protein expression of PKA catalytic subunit in the spinal dorsal horn were increased significantly in control group (P<0.01). Compared with control group, MWT and TWL in pre-incision morphine 2 μg plus clonidine 5 lag group were increased significantly at 2 h after incision (P<0.01) and the number of positive cells and protein expression of PKA catalytic subunit in the spinal dorsal horn were decreased significantly in pre-incision morphine 2 μg plus clonidine 5 μg group (P<0.01). However, MWT, TWL and the number of positive cells and pro-tein expression of PKA catalytic subunit in the spinal dorsal horn changed with no statistical significance in pre-incisional morphine 2.5 μg group and pre-incisional clonidine 5 μg group compared with control group. Conclusion lntrathecal clonidine significantly enhances the antinociceptive effect of intrathecal morphine in a rat model of incisional pain, which might be associated with inhibi-tion of the increased expression of PKA catalytic subunit in spinal cord.     

脊柱后路减压治疗胸腰段骨折脱位合并脊髓损伤术式选择

目的研究两种不同脊柱后路减压方法治疗胸腰段骨折脱位合并脊髓损伤的手术治疗效果。方法回顾分析本院1996年3月～2002年6月收治的胸腰段骨折脱位并脊髓损伤患者76例，按不同减压方法将其分为两组：切除一侧或两侧椎板、椎弓根或部分关节突行侧前方环状减压AF内固定者40例，为直接减压组；体位复位结合AF器械矫正复位36例，为间接减压组。统计学分析，两组资料具有可比性。对术后神经功能恢复情况，按ASIA神经功能评定标准进行评定。中晚期并发症，根据是否有腰背痛，下肢根性痛、麻木无力，两便功能障碍进行评定。生活能力按FIM评定。结果两组病例获6个月～5年随访，结果表明，术前脊髓完全性损伤，术后均无恢复；术前脊髓不完全性损伤，术后两组间比较差异无显著性。中晚期并发症发生，直接减压组高于间接减压组；术后生活自理能力，间接减压组好于直接减压组。结论间接减压手术方法治疗胸腰段骨折脱位合并脊髓损伤不失为一种早期治疗的首选方法。     

格林——巴利氏综合征血液流变学观察

血液流变学已用于许多疾病的研究,对某些疾病的诊断和治疗起到有益的指导作用。格林—巴利氏综合征(GBS)的血液流变学观察尚未见正式报道。今将我院1988～1990年收治的42例GBS患者血液流变学8项指标的对照观察结果报告如下。 1 临床资料与方法 1.1 临床资料 42例中男25例,女17例,     

选择性腰升静泳造影与碘水脊髓造影对腰椎间盘突出的诊断价值

52例疑为L_(4-5)或L_5～S_1椎间盘突出的患者,同时行选择性腰升静脉造影(SALV)和碘水脊髓造影.43例手术和病理证实46个椎间盘突出.本文对两种检查方法诊断准确性,适应性和并发症进行了比较.临床疑诊为腰椎间盘突出者,脊髓造影可疑或正常,SALV是有诊断价值的.     

椎管减压AF系统固定植骨术治疗胸腰段骨折脱位脊髓损伤的临床研究

近二十年来，在胸腰椎骨折治疗方面出现许多技术：如：椎管减压加卢格氏棒、CD、DISK技术等。近年来，由邹德威教授研制成功的脊柱三维复位固定系统(tri-axes fixalort-AF)，具有三维可调整功能，短节固定，结构简单，调节方便，准确有效，使植入手术大为简化。减少了副损伤的发生，有利于损伤脊髓的恢复，促进下肢功能的恢复，     

腰椎穿刺置管持续腰池引流方法的改进

目的 观察改进后的持续腰池引流方法的效果,为降低引流并发症提供依据.方法 将72例蛛网膜下腔出血患者随机分为观察组和对照组各36例,对照组按常规方法行腰穿置管引流.观察组改进穿刺手法,用中心静脉导管置管,依次连接输液延长管、三通及引流袋.结果 两组置管引流时间比较,差异无显著性意义(P＞0.05).观察组堵管、疼痛发生率分别为0、2.78%,对照组分别为16.67%、28.57%,两组比较,差异有显著性意义(均P＜0.05).结论 改进后的腰池置管引流方法可减少引流管堵塞率、减轻患者局部疼痛.     

神经根修复时间对脊髓前角运动神经元存活的影响

目的评价神经根修复时间对脊髓前角运动神经元存活的影响。方法采用大鼠颈。神经根性撕脱伤和椎孔外切断实验动物模型，根据动物神经根损伤类型和损伤后修复时间分为A、B、C、D四组，每组16只。A、C组分别将撕脱与切断的神经根即刻回植入脊髓和于椎孔外直接吻合，B、D组将撕脱和椎孔外切断的神经根旷置3周后再重复上述手术。分别于神经根撕脱和椎孔外切断术后3周、3个月、6个月取材。应用组织病理活检、免疫组化技术及神经示踪技术，对神经中枢及吻合口下段神经干检查，观察脊髓病理改变和轴突再生情况，进行A、B组和C、D组间对比。结果臂丛神经根性损伤即刻修复组脊髓前角运动神经元和尼氏体数目、形态、减少程度及周围再生神经纤维数目、发育程度均优于损伤后3周修复组。结论神经根早期修复对脊髓前角运动神经元有明确的保护作用，对外周神经再生有促进作用。     

运用三步推拿手法治疗神经根型颈椎病

近几年来，在临床推拿治疗中，通过不断地潜心研究，总结出以颈椎转法配合其它手法组成三步治疗神经根型颈椎病的推拿手法，取得了较好的疗效，现介绍如下。     

按摩牵引治疗颈椎病318例疗效观察

按摩治疗颈椎病是中老年人常见病,尤以神经根颈椎病和椎动脉型颈椎病为多见.近几年来笔者运用按摩、牵引治疗这两型颈椎病318例,获满意效果,现报告如下: