Lumbar Spinal Cord Stimulation Can Improve Muscle Strength and Gait Independently of the Analgesic Effect: A Case Report

Spinal cord stimulation (SCS) is widely used for pain relief in patients with failed back surgery syndrome (FBSS), and muscle weakness is a common finding in patients with chronic pain. We present here a single case report of a 47‐year‐old woman, who, after SCS for FBSS, had continuous improvement in lower leg muscle strength and gait, but only transient and minimal pain relief. To the authors’ knowledge, this is only the second published case report of significant improvement in “motor” function, independent of the analgesic effect following SCS in FBSS. If SCS, in fact, does improve muscle strength, new strategies for the management of patients with chronic pain might be opened up. Further studies are needed to verify this hypothesis.     

透析液钙离子浓度对肾功能衰竭血液透析患者血清钙离子水平及血压的影响

目的 观察不同钙离子浓度的透析液对血液透析患者透析后血清钙离子水平及血压变化的影响，为肾功能衰竭血液透析患者的高钙血症及高血压的防治提供依据。方法 选择不同钙离子浓度的透析液，将维持性血液透析患者分为高钙组（1．75mmol／L）和低钙组（1．25mmol／L），比较患者每次透析前后脉搏、血压，同时抽查患者透析前后血钙及血肌酐浓度的变化。结果透析后两组患者血肌酐浓度均显著下降，透析前后差异均具有统计学意义（P〈0．01）；高钙组患者透析后血钙较透析前升高，差异具有统计学意义（P〈0．01），而低钙组患者血钙比透析前略降低，差异无统计学意义（P〉0．05）。高钙组患者透析后较透析前收缩压、舒张压及平均动脉压都升高，差异均具有统计学意义（P〈0．05），而低钙组患者透析后较透析前收缩压、舒张压及平均动脉压都降低，差异均具有统计学意义（P〈0．05）。透析后两组血钙比较差异具有统计学意义（P〈0．01）；透析后低钙组较高钙组患者的收缩压、舒张压及平均动脉压都降低，三者差异均具有统计学意义（P〈0．01）。结论透析液钙离子浓度与血液透析患者血清钙离子水平及血压呈正相关，低钙透析液透析有助于维持性血液透析患者高血压的控制。     

皮质发育障碍模型的建立及其致痫敏感性的研究

目的:建立皮质发育障碍模型,探讨皮质发育障碍模型的敏感性。方法:在SD大鼠孕17d腹腔注入1,3-二氯乙烯-亚硝基脲(BCNU)制作皮质发育障碍模型;Nissl染色观察P60d仔鼠病理变化;选取P60d雄性仔鼠,腹腔注射氯化锂-毛果芸香碱,分别比较两组大鼠癫发生的潜伏期、持续状态时间和死亡率。结果:同龄仔鼠脑组织湿重实验组比对照组显著减轻(P<0.01);Nissl染色显示皮质变薄、皮质层次紊乱、海马区域异位细胞异常聚集;有皮质发育障碍的仔鼠注射氯化锂-毛果芸香碱后,癫发生的潜伏期显著缩短(P<0.01),癫持续状态时间延长(P<0.01),死亡率显著升高(P<0.05)。结论:BCNU致皮质发育障碍模型具有癫易感性。     

hs-CRP、TAS联合血脂检测在早老性痴呆症诊断中的应用研究

[目的]研究超敏C反应蛋白（hs-CRP）、总抗氧化状态（TAS）联合血脂检测在早老性痴呆症诊断中的应用价值：[方法]选择浦东新区精神卫生中心早老性痴呆专科门诊患者54例，作超敏C反应蛋白、总抗氧化状态与血脂检测。[结果]与对照组比较，实验组hs-CRP、TAS差异非常显著，t1=4．55，t2=2．79，P1〈0．001，P2〈0．01；血脂中甘油三酯、低密度脂蛋白胆固醇、载脂蛋白B、Lp（a）差异显著；t1=3.01，P1〈0．01，t2=2．21，P2〈0．05，t3=2．64，P3〈0．01，t4=1．91，P4〈0．05。[结论]超敏C反应蛋白、总抗氧化状态联合血脂（甘油三酯、低密度脂蛋白胆固醇、载脂蛋白B、Lp（a））检测对实验室诊断早老性痴呆症具有较好敏感性和特异性，临床应用前景乐观。     

Vehicle of triamcinolone acetonide is associated with retinal toxicity and transient increase of lens density

Background Intravitreal triamcinolone acetonide (TA) has been widely used as a therapeutic method for many ocular diseases, but a consensus on an appropriate safe therapeutic window of dosage for intravitreal injection, and whether vehicle of TA should be reduced or eliminated, has not yet been reached. The aim of this article is to investigate these issues.Methods Forty New Zealand white rabbits were divided into four experimental groups and one control group. Four or 25 mg TA, with vehicle either reduced or not, was injected into the vitreous cavity of rabbits in experimental groups. Rabbits in the control group received 0.2 ml intravitreal sterile saline solution. Intraocular pressures (IOP) were measured by a Tonopen tonometer. Values of lens density were measured by a Pentacam system. Soluble protein, total antioxidation capacity, reduced glutathione (GSH), glutathion peroxidase (GSH-px), and superoxide dismutase (SOD) in lens were measured by specific kits. ERG and pathological examinations, including light and electron microscopy of the retina, were also performed.Results Elevation of IOP was noted in all experimental groups after intravitreal TA (P<0.01, paired t-test). Significant increase of lens density was noticed at 1 week after intravitreal TA in the 25 mg vehicle-containing group (P<0.0001, paired t-test). Significant loss of GSH-px activity was noticed at the end of the study (P<0.05, paired t-test), while SOD activity increased (P<0.05, paired t-test). Amplitudes of ERG waves declined significantly in vehicle-containing groups (P<0.01, paired t-test) at the end of the study. Pathological examination showed obvious retinal toxicity in vehicle-containing groups.Conclusions Vehicle of TA should be eliminated or reduced before intravitreal injection to avoid potential retinal toxicity and transient increase in lens density.Presented at Chinese Academy of Fundus Disease Meeting, April, 2005.This study was supported by the 985 Fund of Peking University, Beijing.The authors have no financial interest in any instruments or drugs mentioned in this study.     

重症急性胰腺炎102例临床分析

目的探讨重症急性胰腺炎的合理治疗方案。方法以1985年1月～2005年8月间收治的102例重症急性胰腺炎作研究对象，比较手术组与非手术组的主要并发症和死亡率。A组：1985年1月～1993年12月以手术治疗为主41例；B组：1994年1月～2005年8月以早期非手术治疗为主61例。结果手术组死亡率和并发症发生率明显高于非手术组，两组病死率及并发症发生率比较差异有显著性（P〈0．05）。结论重症急性胰腺炎采用早期非手术治疗能有效降低病死率和并发症发生率。大多数重症急性胰腺炎可经非手术治愈。     

钛瓷瓷裂的临床研究和原因分析

目的：分析钛-瓷修复体失败的原因。方法：对38例瓷裂的钛-瓷修复体进行分析：①肉眼观察烤瓷崩瓷部铸件的表面颜色并用便携式厚度测试仪测量其厚度，与未发生瓷裂的正常镰铬合金烤瓷比较；②观察烤瓷崩瓷的部位；③X-ray检测铸件内部气孔。结果：本组崩瓷的钛-瓷修复体，其断层或有气泡，或金属表面氧化层明显增厚（P〈0．05）。而且，所有发生崩瓷的部位均在受力点或因技工本身操作不当引起。结论：钛-瓷修复体失败的原因与加工过程中工艺、瓷的受力点以及与钛元素化学性能有关。