葡萄胎p53、p21~(CIP1)及p185蛋白表达与恶变的关系

目的 :探讨葡萄胎p5 3、p2 1CIP1及p185蛋白表达与恶变的关系及其临床特点。方法 :免疫组化法检测葡萄胎标本中p5 3、p2 1CIP1及p185蛋白的表达 ,以侵蚀性葡萄胎及绒癌为对照 ,并回顾性分析其临床资料。结果 :葡萄胎组p5 3、p2 1CIP1、p185蛋白阳性表达率分别为 35 % (35 / 10 0 ) ,71% (71/ 10 0 )及 36 % (36 / 10 0 ) ,与恶性对照组相比均有显著性差异 (P <0 .0 5 ) ;而完全性与部分性葡萄胎 ,完全性葡萄胎恶变组与非恶变组之间差异均无显著性 (P >0 .0 5 ) ,但恶变组p2 1CIP1表达有降低趋势。结论 :p5 3、p2 1CIP1及p185蛋白表达改变与葡萄胎恶变无确定关系 ,但可作为晚期现象出现于恶性滋养细胞肿瘤中 ,其中p2 1CIP1蛋白表达降低提示滋养细胞有向恶性转化的倾向     

反相高效液相色谱法测定双黄连胶囊中绿原酸的含量

目的 :建立中成药双黄连胶囊中绿原酸的含量测定方法。方法 :采用Phenomenex -C1 8(2 5 0mm×4 6mm ,5 μm)柱 ,以水 -乙腈 -冰醋酸 (92∶7∶1 0 )为流动相 ,检测波长 32 6nm ,流速 1 0ml/min。结果 :绿原酸在 0 1 1～ 0 5 5 μg ,都与相应的峰面积呈良好的线性关系 (r=0 9999) ,平均回收率为 99 1 1 % ,RSD为 0 5 8% (n =6 )。结论 :该方法准确可靠 ,可用于双黄连胶囊制剂的质量控制     

射干的化学成分研究(Ⅱ)

目的 研究中药射干的化学成分。方法 采用硅胶拄色谱及Sephadex LH-20等色谱技术分离纯化，根据理化性质及色谱数据鉴定结构。结果 从射干乙醇提取物的醋酸乙酯萃取部分分得3个化合物，分别为异鼠李素(isorhamnetin，Ⅹ)、粗毛豚草素(hispidulin，Ⅺ)、白射干素(dichotomitin，Ⅻ)，从乙醇提取液正丁醇萃取部分分离得到4个化合物，分别为：鸢尾苷(iridin，ⅩⅢ)、野鸢尾苷(tectoridin，ⅩⅣ)、胡萝卜苷(daucosterol，ⅩⅤ)、维太菊苷(vittadinoside or stigmasterol-3-O-glucoside，ⅩⅥ)。结论 其中化合物Ⅺ为首次从该植物中分得。     

Trace element levels in drinking water and cognitive function among elderly Chinese

The relation between trace element levels in drinking water and cognitive function was investigated in a population-based study of elderly residents (n = 1,016) in rural China in 1996-1997. Cognitive function was measured using a Chinese translation of the Community Screening Interview for Dementia. A mixed effects model was used to evaluate the effect of each of the elements on cognitive function while adjusting for age, sex, and educational level. Several of the elements examined had a significant effect on cognitive function when they were assessed in a univariate context. However, after adjustment for other elements, many of these results were not significant. There was a significant quadratic effect for calcium and a significant zinc-cadmium interaction. Cognitive function increased with calcium level up to a certain point and then decreased as calcium continued to increase. Zinc showed a positive relation with cognitive function at low cadmium levels but a negative relation at high levels.     

大鼠脑神经干细胞神经巢蛋白表达的流式细胞术检测

检测胎鼠及成年大鼠脑内神经干细胞特异性抗原神经巢蛋白的表达,判明啮齿类哺乳动物脑内神经干细胞存在的可能性及相应的部位。方法：显微手术下采取胎鼠及成年大鼠大脑与皮质下脑组织,间接荧光法标记ｎｅｓｔｉｎ,以流式细胞术检测。结果胎鼠脑内普遍存在ｎｅｓｔｉｎ阳性细胞,成年大鼠脑室旁组织中也存在ｎｅｓｔｉｎ阳性细胞。     

准分子激光术前的眼底病变分析及处理

目的分析近视眼行准分子激光术前眼底病变病情及治疗方法.方法对730例(1460只眼)LASIK术前患者行散瞳眼底检查并作详细眼底检查记录.结果1460只眼中152只眼有干性视网膜裂孔(占10.4%),其中有2只眼伴视网膜浅脱离,36只眼同时伴有严重视网膜变性.152只眼干性视网膜裂孔和2只眼视网膜浅脱离行氩激光光凝治疗.结论近视眼LASIK术前常规散瞳检查眼底对发现病变并及时治疗是非常必要的,同时提出眼底病变光凝的指征.     

异环磷酰胺治疗晚期恶性肿瘤病人42例的护理体会

目的　总结采用联合异环磷酰胺化疗的晚期恶性肿瘤人护理对策。方法　对 4 2例晚期恶性肿瘤病人采用联合异环磷酰胺方案化疗 ,全程观察治疗过程所出现的护理问题 ,记录并总结其要点。结果　4 2例病人顺利度过化疗期 ,心理表现也正常。结论　护士熟悉药物的特性和毒性反应 ,及早预防、及时处理和加强毒性反应护理 ,才能保证化疗的顺利进行。     

孤立型脉络膜血管瘤的超声诊断

目的 探讨孤立型脉络膜血管瘤的超声诊断价值。方法 使用标准化A超联合B超诊断6例脉络膜血管瘤。结果 脉络膜血管瘤B超显示实性占位病变，回声与正常脉络膜组织回声一致；A超表现为病变内高反射波。结论 超声检查是诊断脉络膜血管瘤有价值的辅助手段。     

下咽癌120例临床疗效的回顾性分析

目的探讨下咽癌单纯手术、术后放疗和术后放疗 化疗的临床疗效。方法回顾性分析1979年2月~2002年10月收治的下咽癌120例。单纯手术组(简称S组)30例,术后放疗组(简称S R组)60例,术后放疗和化疗组(简称S R C组)30例。随访中位时间42.7个月。结果根据Kaplan-Meier方法统计S组、S R组、S R C组3、5年生存率分别为34.9%、30.4%,47.5%、42.9%,56.1%、47.3%。S组3、5年生存率和S R组及S R C组3、5年生存率存在显著性差异(χ2=8.87,P=0.003,χ2=4.74,P=0.029,χ2=11.47,P=0.009,χ2=13.22,P=0.001),S R组和S R C组3年生存率存在显著性差异(χ2=3.42,P=0.047),S R组和S R C组5年生存率差异无显著性(χ2=2.60,P=0.279)。结论术后放疗明显提高了下咽癌3、5年生存率,应该成为下咽癌首选的治疗方法。合并化疗的综合治疗未能明显提高下咽癌5年生存率。     

Experimental study on inhibitory effect of bridgy duct of hepatic artery on apoptosis of liver and bile duct cells

Objective： To investigate whether the method of bridgy duct established between the recipient＇s spleen artery and the donor＇s gastroduodenal artery could inhibit the apoptosis of liver and bile duct cells caused by hepatic artery ischemia. Methods： Twenty-four mongrel dogs from Xi＇an area were used to establish simplified models of dog orthotopic liver transplantation and divided into three groups randomly： HAI group （hepatic artery ischemia group）,BBB group（bypassing the blood by a bridgy duct） and control group. After cold perfusion, The samples were collected from liver and bile duct in each group at different time and fixed in glutaraldehyde and 4% polyformaldehyde respectively. At last, the apoptosis of liver and bile duct cells were observed and the apoptotic indexes were calculated. Results： Two hours after cold perfusion, apoptotic phenomenon was common in HAI group, rare in BBB group, while no apoptotic phenomenon was observed in control group. TUNEL staining showed that there was no significant difference in apoptotic index among the three groups immediately after cold perfusion. However, with time going, the apoptotic cells were increased in three groups, and the difference in apoptotic index was significant among three groups （P 〈 0.01 ）. Conclusions： Bridgy duct of hepatic artery can inhibit the apoptosis of liver and bile duct cells caused by HAI significantly.