Peripheral Nerve and Transgene Cells Transplantation in the Treatment of Experimental Neuropathy of SD Rats

Purpose: To observe whether optic nerve can regenerate by peripheral nerve transplantation and GDNF gene transfer.Methods: Optic nerve was transected about 2 mm posterior to the eye to establish experimental models of optic neuropathy. Sciatic nerve was sutured to the sheath of injury optic nerve by a 10 - 0 nylon, pcDNA3-GDNF was smeared to the joint and injected to the vitreous cavity. The regenerated retinal ganglion cells axons were observed by HRP. The retina and optic nerve were observed by pathohistological methods.Results: Some retinal ganglion cells with regenerated axons could be seen a week after transplantation with large cell bodies. The cells could be identified by HRP. The regenerated nerve fibers grew to the transplanted sciatic nerve. Then the number of retinal ganglion cells with regenerated axons increased with time going. Only a few regenerated retinal ganglion cells could be seen two months after transplantation. The large retinal ganglion cells were seen to have plenty of cytoplasm     

蜜环菌C-C等多糖对正常和荷瘤小鼠外周血T、B淋巴细胞的作用

本文用细胞化学方法研究了腹腔注入蜜环菌C-C等8种精制后的多糖对正常和荷瘤小鼠外周血T、B淋巴细胞的作用,使用的多糖为精制后的蜜环菌C-C、蜜环菌C—A、柴胡Ⅲ5311(Ⅰ)、当归Ⅱ(Ⅰ)、菊叶梅衣W、菊叶梅衣ST、拟菊叶梅衣W及海星多糖。皮下注入的瘤细胞为S180。研究结果指出:柴胡Ⅲ5311(Ⅰ)可增加正常小鼠外周血T淋巴细胞百分数;蜜环菌C-C与菊叶梅衣ST可明显地降低荷瘤小鼠外周血T淋巴细胞百分数。讨论了8种粗制及精制后的多糖腹腔注入对正常和荷瘤小鼠外周血T、B淋巴细胞作用的异同以及荷瘤小鼠外周血T淋巴细胞百分数明显下降与抑瘤效应的关系。     

Spinal Cord Stimulation (SCS) in Peripheral Ischemic Pain

Between 1982 and 1987,45 patients suffering from painful symptomatology caused by peripheral vascular disease, not curable by medical or surgical therapy, were implanted with epidural neurological stimulators. Measurements used in evaluating the effectiveness of the method were pain control, walking distance, and development of trophic problems. With most patients, we noted a satisfactory and long-lasting degree of pain control. Walking distance increased to a surprising degree. Trophic lesions smaller than 3 sq cm healed, while lesions of greater size required amputation of the limb. Transcutaneous oxygen tension (TcpO₂) was used to study the efects of SCS on peripheral circulation in implanted patients. In addition, TcpO₂ was calculated in 15 patients before and during the percutaneous test to predict the efectiveness of SCS. Regression of painful symptomatology was achieved only in patients whose TcpO_2b improved during the course of the testing. Therefore, this method provides an objective measure for the implantation of a neurostimulator     

应用数学模式对高血压脉图进行血流动力学有关参数分析

通过脉图的多种特征性参数与临床实测的心血管参数之间进行统计处理,建立数学模式及计算机程序。对50例高血压病进行检验比较,得出脉图图象分析与实测结果之间的平均误差为10～20%,说明从桡动脉压力脉搏图来分析心血管参数是具有一定的参考价值。     

受损坐骨神经中STAT3表达和酪氨酸磷酸化的变化及重组CNTF的作用

研究周围神经修复后 ,受损周围神经中信号转导子和转录激活子 3(STAT3)表达和酪氨酸磷酸化的变化及睫状神经营养因子 (CNTF)的作用。用硅管套接切断的成年大鼠坐骨神经 ,术时在受损神经处给予重组CNTF ,用免疫组织化学ABC法结合计算机图像分析观测修复侧神经中STAT3、磷酸化酪氨酸 (PTyr)的分布和相对含量。在生理盐水组修复侧神经中 ,轴突、雪旺细胞STAT3的含量升高 ,轴突、雪旺细胞、单核细胞的PTyr含量升高 ;CNTF组修复侧神经上述细胞成分的STAT3和PTyr含量更高。提示受损坐骨神经的STAT3表达上调 ,酪氨酸磷酸化增强 ,外加重组CNTF有进一步增强的作用。     

The effectiveness of chlorhexidine-silver sulfadiazine impregnated central venous catheters in patients receiving high-dose chemotherapy followed by peripheral stem cell transplantation

Immuno-compromised patients are at high risk for all kind of infections. Unfortunately, they need central venous catheters (CVCs), which are associated with infectious complications. In this study we examined the effectiveness of chlorhexidine-silver sulfadiazine impregnated CVCs to prevent catheter-related infections in patients receiving high-dose chemotherapy followed by peripheral stem cell transplantation. This historical cohort study evaluated 139 patients of whom 70 patients were provided with non-impregnated CVCs and 69 patients with impregnated CVCs. Patients were treated for different diagnoses. The median number of days a CVC stayed in situ was 18 in the non-impregnated group and 16 in the impregnated group. The median duration of neutropenia of patients with non-impregnated CVCs was 9 days compared with 7 days of patients with impregnated CVCs. We found less catheter colonization (CC) in patients with chlorhexidine-silver sulfadiazine CVCs (RR 0.63, 95% CI 0.41–0.96; P  = 0.03). Catheter-related blood stream infections (CR-BSI) were also diminished, but this result was not statistically significant (RR 0.15, 95% CI 0.02–1.15; P  = 0.06). The reduction in CC and CR-BSI did not diminish the incidence of fever. We conclude that the use of chlorhexidine–silver sulfadiazine impregnated CVCs provide an important improvement in the attempt to reduce CC and CR-BSI.