bcl-2反义寡核苷酸对膀胱癌BIU87细胞株的影响

目的:探讨bcl-2反义寡核苷酸对培养的膀胱癌BIU87细胞株的影响.方法:采用bcl-2基因第1外显子的反义寡核苷酸,以硫代磷酸修饰(PS-ASON),序列为5′-TCTCCCAGCGTGCGCCAT-3′,与膀胱癌细胞株BIU87共同孵育作为实验组.加入正义的bcl-2寡核苷酸,序列为5′-TACCGCGTGCGACCCTCT-3′(PS-SON)作为对照组,用流式细胞仪检测细胞凋亡和坏死率,电镜观察细胞形态变化.结果:与对照组相比,实验组的细胞坏死率明显上调,电镜下细胞形态呈坏死改变.结论:bcl-2的反义寡核苷酸引起膀胱癌细胞大量坏死,可能成为膀胱癌的治疗方法之一.     

新型重组人肿瘤坏死因子药代动力学的实验方法

目的 为探讨新型重组人肿瘤坏死因子（nrTNF α）药代动力学而建立生物样品中nrhTNFα的检测方法。方法 （1）方法Ⅰ（RA）：动物肌注^125 Ⅰ标记的nrhTNFα后，测定各生物样品中的总放射活性；（2）方法Ⅱ（HPLC－RA）；上述生物样品无经HPLC分离后，收集并测定其中^125Ⅰ－nrhTNFα部分的放射活性；（3）方法 ⅢELISA法。结果 RA，HPLC－RA法检测的nrhTNFα质量浓度与放射性呈直线相关（RA，r=0.999HPLC－RA,r=0.999)。ELISA法证明nrhTNFα的酶联免疫检测药盒适用于nrhTNFα的检测，nrhTNFα的标准曲线与nrhTNFα的标准曲线显正相关，r=0.994,这一检测系统与其他细胞因子包括IFNα，TNFβ，IL－2和IL－6无交叉反应。结论 RA，HPLC－RA和ELISA法均可作为nrhTNFα的药代动力学实验方法。     

Binding of platelet agglutinating protein p37 from the plasma of a patient with thrombotic thrombocytopenic purpura to human platelets

We have previously reported the purification of a 37 kDa platelet agglutinating protein (PAP p37) from the plasma of a patient with thrombotic thrombocytopenic purpura (TTP) that was shown to be present in a subset of TTP patients. To gain further insight into the interaction between PAP p37 and platelets, we have studied the properties of PAP p37 binding to platelets. Washed human platelets from two normal donors and two TTP patients after recovery were used for the experiments. The PAP p37 binding to platelets was specific, concentration dependent and saturable. Scatchard analysis demonstrated about 20,564-27,090 PAP p37 binding sites per platelet. Stimulation of platelets with thrombin or ADP did not have any significant effect on its binding. Thiol- and serine-specific protease inhibitors did not inhibit PAP p37 binding to the platelets. Sugars such as glucose, fructose, mannose, and sialic acid, at 40 mM, inhibited its binding to platelets by 44%, 73%, 79%, and 91% respectively, but galactose and amino sugars did not have any significant effect. At 250 micrograms/ml, Concanavalin-A inhibited 42% of binding, but other lectins, such as phytohemagglutinin-P, potato lectin and helix pomatia lectin (snail), did not. Pre-incubation of 125I-PAP p37 with the adult human IgG, decreased its binding to the platelets. The monoclonal antibodies to GP Ib (6D1) and GP IIb-IIIa complex (10E5) did not inhibit the binding of 125I-PAP p37 to platelets. Fibrinogen and von Willebrand factor did not affect the binding either. These results suggest that PAP p37 binds to platelets on the sites other than GP Ib or GP IIb-IIIa complex.     

Effect of fathers'' age and birth order on occurrence of congenital heart disease.

STUDY OBJECTIVE--The aim was to examine if there is an effect of fathers' age and of birth order on the occurrence of congenital heart disease. DESIGN--This was a hospital based case-referent study including use of birth defects surveillance data. SUBJECTS--Subjects were 497 cases of congenital heart disease aged between 3 months and 5 years, born in Beijing and Hebei Province, China; 6222 children without congenital heart disease serve as reference baseline. MEASUREMENTS AND MAIN RESULTS--With stratified analysis and logistic regression analyses, congenital heart disease was found to be associated with fathers' age less than 25 years (odds ratio 2.63), independent of mothers' age and of birth order. There was also evidence to show a higher birth order effect on the occurrence of congenital heart disease independent of parental ages. CONCLUSION--Higher birth order and fathers aged less than 25 years were both independently associated with some categories of congenital heart disease and with congenital heart disease overall.     

大型垂体生长激素腺瘤合并重型糖尿病的临床治疗

目的 探讨垂体生长激素腺瘤并发重型糖尿病的临床治疗方法和效果。方法 收治6例大型垂体生长激素腺瘤合并重型糖尿病病人，首先给予大剂量胰岛素控制血糖，待血糖降至10mmol/L左右时手术行肿瘤次全切除，术后常规放疗，DT：50Gy。结果 本组6例病人术后胰岛素所需剂量即明显下降。其中5例获随访0．6～6年，平均随访时间4．5年，均已恢复正常工作，停用任何降糖药物。血糖尿糖复查正常。结论 对大型生长激素腺瘤合并重型糖尿病的病人，积极手术切除肿瘤并辅以放疗是一种迅速有效的治疗选择。     

乌蛇败毒胶囊对接触性皮炎小鼠血清IL-2、TNF-α的影响

目的探讨乌蛇败毒胶囊治疗湿疹的机理。方法采用变应性接触性皮炎小鼠模型,分为模型组,对照组及大、中、小剂量组和空白组,观察各组治疗前后血清IL-2、TNF-α的变化。结果中药组能明显降低模型小鼠血清中IL-2、TNF-α的含量(P<0.01),降低诱发后鼠耳的肿胀度,减少真皮内单一核及多形核白细胞数目(P<0.01)。结论乌蛇败毒胶囊治疗湿疹的部分机理是抑制小鼠Ⅳ型变态反应、降低血清IL-2,TNF-α含量,减轻炎症损伤。     

唇腭裂的牙槽突裂植骨修复术

牙槽突植骨术是唇腭裂序列治疗的一个组成部分,对于恢复上颌牙弓的完整性,保证上颌牙齿的正常萌出,促进上颌骨的垂直向生长及颌骨的稳定性,矫正患侧鼻底塌陷畸形及修复唇侧口鼻腔瘘均有重大意义。总结了保证手术成功的关键,并认为植骨术前后应接受正畸治疗。8～11岁 X 线片示尖牙根形成2/3为最佳手术时间。     

互动微信群结合CBL在血管外科见习中的应用

目的 探讨互动微信群结合病例教学（case-based learning,CBL）在血管外科见习教学中的应用效果。方法 对随机分组的128名在血管外科临床见习的7年制学生分别实施互动微信群结合CBL（试验组）和单纯CBL（对照组）;用统一的考核方法评估两组学生接受专业理论及临床知识的情况,评价两种教学在血管外科见习中的教学效果。用SPSS 22.0进行t检验。结果 试验组的理论考试成绩为（86.36±7.42）分,临床考试成绩为（88.44±7.62）分,高于对照组的（84.71±6.72）分和（86.22±6.41）分;试验组学生在学习兴趣、课堂气氛、自学能力、临床思维和团队精神共5方面的满意度也高于对照组。结论 互动微信群结合CBL能提高血管外科临床见习的教学效果,提高学生的自学能力及临床思维能力。     

The characteristics of duodenal peptic ulcer in obese persons]

Analysis was made of the rate of clinical manifestations and complications in 77 patients with overweight exceeding stage I obesity, suffering from duodenal ulcer. In the overwhelming majority of the patients, the disease ran with typical complaints and the diagnosis of peptic ulcer was not difficult. In subjects prone to and suffering from obesity, duodenal ulcer accounted for 2.3% among all the patients with duodenal ulcers. The patients were noted to be fairly prone to complications, particularly to the stenosing of the duodenum. Concomitant complications occurred frequently enough (36.3%). In obese patients, nontypical "low" localization of duodenal ulcer and a high proneness to hypersecretion were encountered more frequently.     

分离和孵育大鼠黄体细胞的方法

本文介绍了用胰蛋白酶分散大鼠黄体细胞和培养的方法。未成年雌性大鼠用PMSG和hCG诱导超排卵后取得的黄体,经0.025%的胰蛋白酶分散,可获得大(直径为14.2～28.5μm)、小(直径为7.1～12.3μm)二种黄体细胞。台盼兰排斥试验测得细胞活力为85～90%,经3～4小时孵育后基本保持不变。黄体细胞产生的孕酮量与hCG浓度、培养时间和细胞数明显相关;而且,cAMP能显著增加hCG刺激的孕酮产生。结果表明,用胰蛋白酶分散大鼠黄体细胞进行体外培养是一种简单而有用的方法。