预防性维修在放射设备维修中的探索

介绍我们对放射设备进行预防性维修的探索工作,总结在放射科实施预防性维修的意义。     

体外电磁冲击波碎石术对输尿管结石疗效分析

探讨输尿管结石体外电磁冲击波碎石术效果，评价其应用价值。370例输尿管结石病人按结石部位、大小、结石停留时间分类，将各类结石疗效进行比较。输尿管结石碎石次数与结石大小相关（P〈0.05。不同部位同等大小结石碎石次数无显著差异。排石效果与结石大小不相关，而与病程长短相关（P〈0.05）。体外电磁冲击波碎石术是治疗输尿管结石首选方法，严格把握适应证可提高碎石疗效。     

凤尾草鉴别研究

目的：研究凤尾草（凤尾蕨）药材的鉴别方法和质量标准。方法：对药材凤尾草药材性状、显微特征进行研究。结果与结论：为药材凤尾草的质量标准的制订提高和开发利用提供科学依据。     

负调节子SODD在TNFR-Ⅰ信号转导中的研究

SODD是一由457个氨基酸编码的分子量约为60kD的胞浆蛋白质,广泛表达于人类各组织细胞中,其作用主要是在TNFR-Ⅰ信号转导通路中充当负调节子,阻止TNFR-Ⅰ信号转导通路呈持续激活状态,以稳定内环境,维持正常生命过程。病理状态下,SODD过表达的组织细胞对细胞表面死亡受体介导的凋亡敏感性降低,对化疗药物表现出耐受性。     

试论我国生物医药产业的风险投资

分析发展我国生物医药产业的重要战略意义,提出生物医药在发展中应引入风险投资,并对生物医药领域内引入风险投资的可行性及其投资策略进行探讨.     

Effects of rat urotensin Ⅱ on coronary flow and myocardial eNOS protein expression in isolated rat heart

AIM: To examine the effects of urotensin Ⅱ, a recently discovered endogenous peptide, on coronary flow (CF), cardiac function, and endothelial nitric oxide synthase (eNOS) expression in isolated rat hearts. METHODS: Heart was isolated and perfused retrogradely via the aorta in Langendorff mode. Rat urotensin Ⅱ was administered in the perfusion solution. The eNOS content in myocardium was determined by Western blot. RESULTS: Rat urotensin Ⅱ had no effect on the heart rate, left ventricular systolic pressure, left ventricular end-diastolic pressure, or ±dp/dtmax. While rat urotensin Ⅱ dose-dependently increased CF. CF was increased by 11.43 %, 6.67 %, 6.62 %, 6.56 %, 6.36 %, and 5.86 % respectively in a time-dependent manner at 5, 10, 15, 20, 25, and 30 min after injection of rat urotensin II 6.66×10-2μg. The maximal effect on CF was found at 5 min following urotensin II administration. NG-nitro-L-arginine methyl ester (L-NAME) did not prevent the increased CF in response to urotensin II. Rat uroten     

三角叶风毛菊化学成分研究

目的:对广西产三角叶风毛菊进行了系统的成分研究.方法:采用柱层析进行了单体化合物的分离,并运用波谱学方法对所分得的化合物进行了结构鉴定.结果:自其地上部分分得8个化合物,通过光谱解析鉴定了其结构.结论:黄酮类化合物4个,分别为木樨草素(Luteolin,Ⅰ),槲皮素(Quercetin,Ⅱ),槲皮素-3-O-α-L-鼠李糖苷(Quercetin-3-O-α-L-rhamnopyranoside,Ⅲ),芦丁(Rutin,Ⅳ);三萜类化合物2个,分别羽扇豆醇乙酸酯(Lupeol acetate,Ⅴ)羽扇豆醇(Lupeol,Ⅵ);甾体类化合物2个,分别为β-谷甾醇(β-sitosterol,Ⅶ),胡萝卜苷(Daucosterol,Ⅷ).化合物Ⅰ-Ⅷ均为首次自该种植物分得.     

中药川芎的指纹图谱分析

本研究对川芎原药材进行了提取处理,水提取物经萃取后获得化学组分。采用高效液相-质谱联用法(HPLC-MS)分析发现,在本实验条件下,用HPLC-MS能对指纹图谱的主要特征峰对应的化学成分进行分析,发现有相同的分子离子峰[M+H]+(m／z 225),易形成碎片离子m／z 207,并进一步阐明洋川芎内酯成分主要碎片离子峰的形成过程。     

Banxia Xiexin Decoction(半夏泻心汤)Combined with Afatinib in Treatment of Advanced Gallbladder Cancer:Case Report and Literature Review

<正>Gallbladder cancer(GBC)is a malignancy of biliary tract which is infrequent in developed countries but common in some specific geographical regions of developingCurrently,GBC has a low early diagnosis rate and an extremely poor prognosis,leading to major problems for treatment of GBC.Liver invasion and metastasis one of the main causes of its poor prognosis,with its average overall survival of 6 months,     

股骨近端髓内钉与动力髋螺钉在股骨粗隆部骨折治疗中临床疗效的对比分析

[目的]评价股骨近端髓内钉(PFNA)与动力髋螺钉(DHS)在股骨粗隆骨折治疗中的临床疗效.[方法]将应用PFNA(39例)与DHS(36例)治疗的75例患者,从术中情况、术后并发症以及术后髋关节功能的恢复情况对两种治疗方法的临床疗效进行比较分析.[结果]DHS的手术失血量高于PFNA(P＜0.05),同时其术后并发症也较PFNA明显增多(P＜0.05),髋关节功能Harris评分优秀率也低于PFNA治疗组(P＜0.05).[结论]PFNA在治疗上较DHS具有操作简单、创伤小、骨折固定牢固、并发症少及术后患者可早期离床负重等优点,是一种治疗股骨粗隆间骨折的理想方法,值得临床推广使用.