烧热病的病因研究

烧热病是20余年来发生于我国部分棉产区农村的一个新病种。我们通过对全国主要发病地区广泛的病因调查,并结合临床观察、实验研究和预防实践,终于查明本病是较长期大量食用粗制生棉油(其主要毒性成分为棉酚)所致的慢性中毒性疾病。本文介绍了病区粗制生棉油制油工艺的三种类型;并论述了确定本病病因的主要根据。     

非动脉炎性前部缺血性视神经病变的血流动力学分析

目的：探讨血流动力学因素在非动脉炎性前部缺血性视神经病变（nonarteritic anterior ischemic optic neuropathy,NAION)发生中的作用。方法对NAION患者48例50只眼和非ANION患者50例50只眼的肱动脉压、眼动压和眼压进行比较,结果NAION组的肱动脉、眼动脉收缩压和舒张压均显著低于非NAION组（P＜0．05）,而眼压显著高于非NAION组（P＜0．05）。眼动脉收缩压和舒张压与眼之差均显著低于非NAION组（P＜0．01）。结论相对的低血压,高压眼和眼动脉压与眼压的不平衡是引起NAION的重要因素。     

血浆内皮素与慢性肾衰高血压

用放射免疫分析的方法测定23例慢性肾衰维持性血透（MDCRF）患者及22例慢性肾衰非透析（NpeRF）患者的血浆内皮素（Endothelin，ET）水平，并与正常人对照。结果，MDCRF组（190．1±31．9pg／ml）及NDCRF组（140.6±21．3pg／ml）ET含量均高于正常组（8．7±24．6pg／ml），且均有显著性差异（P＜005）；将MDCRF及NDCF进一步分为高血压与非高血压组时，MDCRF高血压组（13例）ET水平明显高于正常血压组（10例）（297.4±67．2比190．1±31．9pg／ml，P＜0，02），NDCRF高血压组（12例）ET水平明显高于正常血压级（10例）（241．0±52.8比140．6±21.3mm；ml，P＜0．05）．最后对上述结果进行了初步讨论．     

金利胶囊对膝骨关节炎兔骨骼肌收缩蛋白基因与软骨基质蛋白多糖表达的影响

[目的]通过观察免膝骨关节炎（KOA）骨骼肌蛋白与软骨基质蛋白多糖（PGs）表达,探讨柔肝中药金利胶囊治疗KOA的作用及机理.[方法]42只新西兰大白兔分为空白对照组（K组）,模型对照组（MD组）,金利干预组（R组）;MD组与R组动物以改良Hulth法造模,R组造模并给药;取膝关节行番红/固绿染色、Mankin评分;RT-PCR检测肌肉α-肌动蛋白（a-actin）、重链肌球蛋白亚型（MHC Ⅰ,MHCⅡa,MHCⅡd/x,MHCⅡb）、Aggrecan与ADAMTS5 mRNA表达,检测关节软骨糖胺聚糖（GAG）水平.[结果]与模型组比较,R组Mankin评分降低,α-actin与多种MHC亚型mRNA表达水平上调（P＜0.05）;Aggrecan mRNA呈高表达,ADAMTS5 mRNA低表达（P＜0.05）.[结论]金利胶囊能够延缓OA软骨退变,促进骨骼肌收缩蛋白基因表达,改善软骨基质蛋白多糖代谢.     

善得定与垂体后叶素治疗食管静脉曲张破裂出血的疗效对比

本文用善得定（ｓａｒｄｏｓｔａｔｉｎ）治疗１８例肝硬化食管静脉曲张破裂出血（ＥＶＢ）。同期用垂体后叶素进行对比观察。结果显示：善得定治疗ＥＶＢ止血总有效率为８８．９％，垂体后叶素为５５．６％；善得定平均止血时间为３８分，垂体后叶素为７４分；善得定治疗后平均失血量为３２５ｍｌ，垂体后叶素为５６８ｍｌ，两者相比疗效具有显著性差异（Ｐ＜０．０５）。善得定的副作用也明显少于垂体后叶素。因此，善得定可作为治疗ＥＶＢ的首选药物之一     

抗丙肝病毒药物研发的最新进展

丙型肝炎病毒(HCV)是引起慢性肝脏疾病的主要病因.目前尚无疫苗预防HCV感染.长效聚乙二醇Ⅰ型干扰素(pegIFN-α)和利巴韦林(RBV)联合应用是近十年来治疗丙肝的最佳药物,但仍有一半以上基因1型HCV感染者对该联合抗病毒治疗无效,并且IFN和RBV的毒副作用较大且疗程长达1年,因此极大地限制了其在临床上的应用....     

以“芪英三两三”组方经验为指导治愈顽固慢性再生障碍性贫血1例

慢性再生障碍性贫血属于临床血液系统常见疾病之一，发病率呈逐年升高趋势，病程长，易反复，对患者的生活质量形成严重影响。姜苗教授认为慢性再生障碍性贫血不仅与肾虚相关，且与脾胃升降功能联系密切，强调从脾论治，抓住“虚”“瘀”“毒”3个病理因素，活用“芪英三两三”组方加减，健脾益肾，化瘀解毒。文章以完全治愈1则顽固慢性再障合并继发血小板减少病案为例，探讨姜教授治疗慢性再生障碍性贫血思路及用药方案。     

仙花活骨丹颗粒含药血清对血管内皮细胞增殖及黏附分子表达的影响

目的以血清药理学方法观察仙花活骨丹颗粒对血管内皮细胞增殖及黏附分子表达的影响,探讨仙花活骨丹颗粒治疗股骨头缺血性坏死的药理学机制。方法建立人脐静脉内皮细胞体外培养模型,将ECV304细胞与仙花活骨丹颗粒不同剂量含药血清一起培养,MTT法观察细胞增殖情况,同时对细胞黏附分子表达进行测定。结景仙花活骨丹颗粒舍药血清处理24h后能不同程度促进血管内皮细胞ECV304的增殖（P〈0．05）,中剂量12h、48h、72h增值最明显（P〈0．01）;但72h较48h增值情况又有所下降。含药血清组CD54（ICAM-1）表达明显较空白对照组增多（P〈0．05）。中剂量组CD54（ICAM-1）表达呈高峰,而大剂量组CD54（ICAM-1）表达又有所降低。中剂量仙花活骨丹颗粒是促进的最佳浓度。结论仙花活骨丹颗粒能够促进内皮细胞的增殖以及细胞粘附分子的表达。     

Clinical significance and correlation of miR-200c and P-gp expression in gastric cancer and the effects on multidrug resistance

BackgroundPoor prognosis is common in gastric cancer patients due to multidrug resistance (MDR)-induced recurrence and metastasis. In the present study, we investigated the expression of microRNA (miR)-200c in gastric cancer tissues and cell lines and its relationship with the expression of the drug resistant gene ABCB1, which encodes P-glycoprotein (P-gp).MethodsThe basic characteristics of 102 patients with gastric cancer were reviewed. Real time-polymerase chain reaction (PCR), immunohistochemistry, and Western blot were employed to detect the expression levels of miR-200c and P-gp in gastric carcinoma tissues and cell lines. The correlation of miR-200c messenger RNA (mRNA) level with clinicopathological characteristics and P-gp protein expression were analyzed. SGC7901/vincristine (VCR) cells were transfected with miR-200c mimics or a specific small interfering RNA (siRNA) targeting the ABCB1 gene. The methyl thiazolyl tetrazolium (MTT) assay and flow cytometry were used to determine the role of miR-200c and ABCB1 on the viability and apoptosis of gastric carcinoma cell lines.ResultsThe level of miR-200c in carcinoma tissues was significantly lower than that in adjacent tissues, and the expression level of P-gp in carcinoma tissues was obviously higher than that in adjacent tissues (P<0.01, P=0.029). The expression levels of miR-200c and P-gp were associated with the malignant characteristics of gastric cancer, and patients with high expression of miR-200c or negative expression of P-gp had a better prognosis (P=0.006, P=0.022). MiR-200c negatively regulated the ABCB1 gene in gastric cancer cell lines. MiR-200c overexpression and ABCB1 down-regulation increased the sensitivity of SGC7901/VCR cells to VCR and reversed MDR by promoting cell apoptosis.ConclusionsThe expression level of miR-200c decreases in gastric carcinoma tissues and drug-resistant gastric cancer SGC7901/VCR cells. Overexpression of miR-200c may enhance the sensitivity of SGC7901/VCR cells to VCR by regulating the expression of P-gp.