椎弓根螺钉在胸腰椎骨折治疗中体会

目的探讨椎弓根螺钉（PS）在胸腰椎骨折治疗中的疗效。方法回顾性分析应用PS治疗胸腰椎骨折的68例病例资料。全部病例均采用分离显露损伤椎体及上下各一个椎体行后路减压,椎弓根螺钉复位内固定,小关节突及横突间和椎间植骨融合的治疗方法。结果随访2-52个月,68例骨折均愈合,58例椎体高度完全恢复,压缩性骨折中6例残留10%-30%的压缩未能恢复,65例植骨融合良好,无内固定松动现象。结论椎弓根是脊柱中最坚强的部位,椎弓根螺钉经椎弓根至椎体固定胸腰椎骨折操作简便、固定可靠、骨折复位和恢复胸腰椎正常弧度可以分步骤完成,重建的脊椎稳定性好,可早期下床活动,为目前胸腰椎骨折治疗中较好的方法之一。     

BCL—2和增殖细胞核抗原子在子宫肌瘤中的表达

目的：研究bcl-2蛋白和增殖细胞核抗原（PCNA）在子宫肌瘤和正常子宫肌层中的表达及其在肌瘤发生发展中的作用。方法：用免疫组织化学ABC法检测40例子宫肌瘤组织和正常子宫平滑肌组织中的bcl-2蛋白和PCNA的表达。结果：bcl-2和PCNA在肌瘤组织中表达均明显强于正常 子宫平滑肌组织（P＜0．001）。结论：bcl-2和PCNA在肌瘤中过度表达以及两者的共同作用,可能在子宫肌瘤的发生发展过程中起重要作用。     

肌动蛋白是大鼠肝细胞核基质的组分之一

目的：证实肌动蛋白存在于大鼠肝细胞核基质中。方法：应用SDS－PAGE法分析大鼠肝细胞核基质的组分,以肌动蛋白多克隆抗体进行Westem Blot免疫印迹检测。结果：核基质蛋白SDS－PAGE图谱中可见相当于肌动蛋白的43KD条带,Westem Blot分析证实核基质中存在肌动 蛋白条带。结论：肌动蛋白是大鼠肝细胞核基质的组分之一。     

Risk Factor Analysis of Facet Fusion Following Cervical Lateral Mass Screw Fixation with a Minimum 1-Year Follow-up: Assessment of Maximal Insertional Screw Torque and Incidence of Loosening

Posterior stabilization is a common surgical procedure, which aims for rigid stabilization by facet fusion. Facet non-union has a potential risk of the screw loosening and malalignment. Although some authors have reported the influencing factors about screw loosening in the lumbar spine, there are few reports about the risk factor contributing to the facet non-union in the cervical spine. In all, 22 patients (78 facets and 122 screws) with degenerative cervical kyphosis or spondylolisthesis who underwent decompression and lateral mass screw (LMS) fixation were analyzed. Age, gender, smoking, bone mineral density (BMD), the degree of facet decortication with bone packing, and screw loosening were investigated as risk factors contributing to the facet non-union at each segmental fused level. Facet fusion rate was 85.9% (67/78 facets) and the incidence of loosening was 4.9% (6/122 screws, 4 patients). Insufficient facet decortication with bone packing is a significant risk factor of facet non-union (p <0.05, odds ratio: 26.5). All six loosened screws were associated with bony non-union of the facet and were located in the uppermost or lowermost vertebrae. Comparing loosened screws and stable screws, the average maximal insertional screw torque (MIT) was 9.8 cNm and 39.5 cNm, respectively (p <0.05). Additionally, the length of the stable screws was significantly longer versus the loosened screws (p <0.05). Lower MIT and shorter screw length located near the ends of the lateral mass may predict loosening, which can lead to facet non-union. Sufficient facet decortication with bone packing is one of the important factors contributing to the facet fusion.     

基于NF-κB相关信号通路探讨常用中药治疗溃疡性结肠炎研究进展

核转录因子-κB(NF-κB)相关信号通路在溃疡性结肠炎的形成与发展中起到很大的作用。研究显示中药单体及单药可以通过NF-κB信号通路介导减少黏膜炎症反应、抑制肠道上皮细胞凋亡、增强肠道黏膜屏障、调节肠道内菌群丰度等抑制溃疡性结肠炎的发展,但具体的作用机制尚不明确。可能与调节TLR4/NF-κB信号通路、JAK2/STAT3/NF-κB信号通路、PI3K/AKT/NF-κB信号通路、NF-κB/NLRP3信号通路等有关。涉及到的常用药物包括黄连、干姜、鸦胆子、黄芪、肉桂、青黛、雷公藤、黄芩、蒲公英、马齿苋、苦参、青蒿等及其提取物小檗碱、6-姜烯酚、鸦胆子苦醇、黄芪多糖、肉桂醛、雷公藤多苷、黄芩苷、苦参总碱、双氢青蒿素等。故围绕NF-κB相关信号通路对常用治疗UC的中药及其单体作一综述,旨在为进一步深入研究提供思路和参考。     

基于TLR4/MyD88/NF-κB通路探究桃红四物汤对糖尿病周围神经病变大鼠炎症反应的影响

目的:探究桃红四物汤对糖尿病周围神经病变(DPN)大鼠炎症反应及对Toll样受体4(TLR4)/髓样分化因子88(MyD88)/核转录因子kappan B(NF-κB)通路的影响。方法:从45只SD大鼠中随机选取10只为对照组,其余35只大鼠建立DPN模型,3只大鼠建模失败,其余随机分为模型组,桃红四物汤低、高剂量组及α-硫辛酸组,每组各8只。桃红四物汤低、高剂量组分别给予4.5、18 g/(kg·d)的桃红四物汤,α-硫辛酸组给予α-硫辛酸20 mg/(kg·d),对照组及模型组给予等量的0.9%氯化钠溶液,均灌胃给药。连续给药8周后,检测大鼠血清炎症因子、血糖及血脂指标及神经传导情况,观察坐骨神经病理学变化,检测TLR4相关通路蛋白表达情况。结果:与对照组比较,模型组血清肿瘤坏死因子-α(TNF-α)、白细胞介素-1β(IL-1β)及白细胞介素-6(IL-6)水平升高,血糖、糖化血红蛋白(HbA1c)、甘油三酯(TG)及血清总胆固醇(TC)水平升高,感觉神经传导速度(SNCV)及运动神经传导速度(MNCV)水平降低,TLR4、MyD88、NF-κB蛋白表达上调(P<0.05)...