计算机技术定量分析三尖瓣返流患者右室收缩和舒张功能的研究

本研究对３０例三尖瓣返流患者同步进行了多普勒超声心动图和右心导管检查，应用计算机软件程序对三尖瓣返流频谱曲线进行微分处理。结果表明，两种技术测量的右室压力最大上升速率、右室心肌最大生理缩短速度、右室压力最大下降速率以及右室心肌松驰时间常数均高度相关（ｒ分别为０．９３，０．８６，０．９４，０．９５），表明三尖瓣返流压差法能够无创性估测右室收缩和舒张功能，应用计算机软件程序能够使测量方法简便、准确。     

Guillain-Barré syndrome in South-West Stockholm, 1973–1991, 3. Clinicoepidemiological subgroups

Using hierarchical cluster analysis, applied to 47 cases of Guillain-Barre Syndrome (GBS) incident in South-West Stockholm (SWS) during the period from January 1973 to June 1992, we identified three major clinicoepidemiological subgroups. The first subgroup, 25.5% of the cases (26.7 ± 6.7 years), recorded a peak incidence at ages 20–29 years and presented significant differences from other subgroups, a high proportion of cases with onset at low age preceded by respiratory infection (83.3%) and with normal motor conduction velocity (50.0%). Also found, were less affected biological parameters, a rapidly progressive course and independence in gait at one month after onset. A second subgroup, 27.7% of cases, was severely affected, clinically and functionally. It consisted predominantly of young individuals (22.7 ± 11.1 years), with a high incidence (69.2% of cases) in autumn. A third subgroup, comprising 40.47; of cases, was older (61.1 ± 11.0 years) and, in general, also severely affected. The incidence of this form appeared to be invariant with time.     

Hypoxia effects on vascular endothelial growth factor derived epithelial cells of nasal polyps]

OBJECTIVE: To understand the role of nasal mucous epithelial cells to hypoxia in early stage of nasal polyps(NP) formation. METHODS: Epithelial cells of NP and inferior turbinate (IT) were cultured without serum under normal oxygen and hypoxia, and stimulus of inflammatory cytokines. Erythropoietin (EPO) was regarded as hypoxia mark, and expression of vascular endothelial growth factor(VEGF) mRNA and protein derived from epithelial cells were detected respectively by in situ hybridization and ELISA. RESULTS: 1. Under hypoxia, EPO mRNA was expressed intensely in epithelial cells from NP and IT, and there was no significant difference between both of them. This result suggested that EPO might be regarded as a hypoxic mark. 2. The ability of producing VEGF mRNA increased with cytokines stimulation, especially under hypoxia. Protein level of VEGF from epithelial cells of NP and IT increased with cytokines stimulation, especially in hypoxia and was time-dependent. CONCLUSION: Epithelial cells actively produce vast VEGF under hypoxia. The VEGF induced by hypoxia of the mucosa in middle meatus is of importance in the formation of nasal polyps(NP) in early stage, which may be the major cause of NP formation in middle meatus.     

手术治疗跟骨塌陷性骨折

目的　评估跟骨塌陷性骨折手术治疗的效果。方法　 1996年 5月～ 2 0 0 0年 6月共手术治疗跟骨塌陷性骨折 15例 ,8例内固定 ,7例植骨 ,平均随访 14个月 ,参照AOFAS评分对患者有否疼痛、步态、距下关节活动 ,是否支架辅助、术后X线照片等加以评估。结果　两组结果无明显差异。 2例手术切口皮缘坏死 ,6例疗效为优 ,9例为良。结论　跟骨塌陷性骨折手术解剖复位能取得好的效果     

复方华蟾胶囊抗小鼠肿中瘤作用的实验研究

目的了解复方华蟾胶囊抗小鼠移植性肿瘤的作用.方法以小鼠肝癌22(H22)、小鼠肉瘤180(S180)为瘤株,应用动物移植性肿瘤的体内试验法对药物进行抗癌药效学试验.结果复方华蟾胶囊灌胃4,2 g/kg@d,连续14 d,对小鼠移植性肝癌实体型生长有明显的抑制作用,抑瘤率分别为38.09%,30.95%.对小鼠移植性S180实体型生长有明显的抑制作用,抑瘤率分别为34.7%,30.08%.复方华蟾胶囊对荷瘤小鼠的胸腺和脾脏重量无影响.结论复方华蟾胶囊在试验条件下有一定抗肿瘤作用.     

胸腰段脊柱脊髓损伤减压与固定相关问题探讨（附166例报告）

目的 对胸腰段脊柱脊髓，马尾神经损伤患者的外科治疗及几种内固定方法的疗效进行探讨。方法 对166例患者的治疗进行回顾分析。该组患者中椎体爆裂性骨折37例，椎体压缩骨折超二分之一109例，椎体骨折脱位14例，多节段或跳跃骨折6例，脊髓损伤按Frankel分级，A级59例，B级46例，C级42例，D级19例，治疗采用后路减压复位122例，前路减压复位，髂骨植骨融合44例。结果 术后123例获3-18个月随访，随访患者中随4例RF钉断裂，5例Harrington上钩脱落，6例棍断裂，其余患者内固定稳固，脊髓，马尾神经恢复，除35例仍为A级外，余脊髓神经功能恢复1-3个级别。结论 各种不同内固定可保持或增强脊柱的稳定，胸腰段脊柱脊髓损伤的外科治疗应根据骨折类型，脊髓及马尾神经损伤程度选择手术入路及内固定材料。     

二乙基亚硝胺诱导大鼠肝细胞癌过程中明胶酶的动态变化

目的：观察肝癌形成过程中明胶酶表达（蛋白及mRNA水平）的动态变化，探索明胶酶在肝癌生长浸润中的作用。方法：应用免疫组化法、明胶酶谱法和RT-PCR法对大鼠肝癌形成过程中各期明胶酶表达情况进行观察，并与正常对照组进行比较分析。结果：正常肝组织及肝硬化组织内明胶酶有表达，肝癌形成后主要在癌细胞内表达；明胶酶原在正常肝组织中有低表达，诱癌过程中呈持续增高趋势；明胶酶-2mRNA与其酶蛋白表达趋向一致。结论：在肝癌形成过程中明胶酶转录和翻译水平均呈持续增高趋势。     

5339例创伤患者创伤及死亡特点分析

目的　探讨创伤患者创伤及死亡特点。方法　回顾性分析 1996年 1月至 2 0 0 0年 12月我院收治 5 3 3 9例创伤患者的临床资料。结果　 5 3 3 9例创伤患者中男性 3 910例 ,女性 14 2 9例 ,平均受伤年龄 (3 5 3± 3 3 7)岁 ,2 0～ 2 9岁占 64 19%。治愈好转5 168例 ,死亡 47例 ,3 1例死于重型、特重型颅脑损伤。结论　创伤的高危人群为青壮年 ,且男性多于女性 ,交通事故是本组创伤的第一位原因。把创伤的预防与控制作为一项政府工程 ,加强宣传和教育 ,改善交通状况等均对创伤的预防与控制有重要意义     

桂枝的化学成分研究

目的：对桂枝的化学成分进行系统研究。方法：利用各种色谱技术进行分离纯化，并根据理化常数和光谱解析（UV，IR，MS，NMR）鉴定各化合物结构。从桂枝95％乙醇浸膏的氯仿和乙酸乙酯部分中，共分离得到11个化合物。结果：分别鉴定为：肉桂酸（I）、2－甲氧基肉桂酸（Ⅱ）、1，4－二苯基－丁二酮（Ⅲ）、香豆素（Ⅳ）、β－谷甾醇（Ⅴ）、丁香醛（Ⅵ）、5α，8α－过氧化麦角甾醇（Ⅶ）、2－甲氧基苯甲酸（Ⅷ）、6β－羟基－4－烯－3－豆甾酮（Ⅸ）、原儿茶酸（Ⅹ）、胡萝卜苷（Ⅺ）。结论：化合物Ⅱ、Ⅲ、Ⅷ为首次从天然界分离得到，化合物Ⅶ为首次从高等植物中分离得到，化合物Ⅵ、Ⅸ为首次从本属植物中分离得到。     

人透明软骨抗OS-732细胞系浸润的研究——细胞培养及透射电镜观察

本文研究成骨肉瘤OS-732细胞系浸润软骨的机理,指出经盐酸胍处理后的软骨可被瘤细胞所浸润,这些浸润细胞在电镜下见其有生长、代谢旺盛的特点,提示正常软骨内含有抑制肿瘤细胞浸润的因子存在。