外源性血管抑素K(1-3)基因在人脑胶质瘤中的表达意义

目的 探讨外源性血和抑素Ｋ（１－３）基因「ａｎｇｉｏｓｔａｔｉｎＫ９１－３）,ＡＫ（１－３）」在人脑胶质瘤中的表达及其作用。方法 应用ＰＣＲ法,使人Ｉｇｋａｐｐａ链分泌信号肽序列Ｓ中装在ＡＫ（１－３）基因上－ＳＡＫ（１－３）;构建ＳＡＫ（１－３）基因的真核表达载体ｐｃＤＮＡ－ＳＡＫ（１－３）。经脂质体法将其转染入ＳＨＧ４４人脑胶质瘤细胞,行Ｇ４１８筛选获得转基因瘤细胞克隆,比较转基因和内皮细胞抑制     

局部分泌的血管抑素K（1—3）蛋白抑制人脑胶质瘤生长的实验研究

目的 探讨局部分泌血管抑素Ｋ（１￣３）蛋白〔ａｎｇｉｏｓｔａｔｉｎ Ｋ（１￣３）,ＡＫ（１￣３）〕治疗人脑胶质瘤的可行性。方法 构建ＡＫ（１￣３０基因的真核表达载体ｐｃＤＮＡ－ＳＡＫ（１￣３）,经脂质体法将该载体转染入人脑胶质瘤细胞ＳＨＧ４４、行Ｇ４１８筛选。用电镜和流式细胞仪测定转染细胞的生物学性状,以内皮细胞抑制实验和免疫荧光实验检测该细胞表达的ＡＫ（１￣３）蛋白。应用裸鼠皮下致瘤性实验,结合     

血管生成抑制素的功能结构域K1-3的融合表达与抗体制备

目的;重组表达ａｎｇｉｏｓｔａｔｉｎ的功能结构域Ｋ１－３,并制备抗体,为其作用机理研究打下基础。方法：设计引物,通过ＰＣＲ以人纤溶酶原ｃＤＮＡ为模板扩增出Ｋ１－３基因片段,克隆至ｐＧＥＸ－４Ｔ－１融合表达载体,ＩＰＴＧ诱导,挑出表达克隆,切下基因片,克隆至ｐＵＣ１９进行序列测定,保留序列完全正确的克隆并进行诱导表达,从ＳＤＳ－ＰＡＧＥ上切下表达的蛋白条带作为抗原免疫家兔,制备多克隆抗体,并以Ｗｅｓ     

血管生长抑制因子基因的克隆及其在昆虫细胞中的表达

目的;获得具有高活性的Ａｎｇｉｏｓｔａｔｉｎ表达,为进一步研究及应用奠定物质基础。方法：用ＰＣＲ法人纤维蛋白酶原ｐｌａｓｍｉｎｏｇｅｎ基因中,获得Ａｎｇｉｏｓｔａｔｉｎ（ｋｒｉｎｇｌｅｌ－４）基因,测序验证后,将正确的Ａｎｇｉｏｓｔａｔｉｎ（Ｋ１－４）序列,插入Ｂａｃ－ｔｏ－Ｂａｃ杆状病毒表达系统,转染昆虫细胞ｓｆ９,表达Ａｎｇｉｏｓｔａｔｉｎ。结果：获得了正确序列Ａｎｇｉｏｓｔａｔｉｎ ｃＤＮＡ     

特异性血管生成抑制素的制备及其抑制血管生成作用

目的：从血浆中纯化制备有特异抑制血管生成活性的天然ａｎｇｉｏｓｔａｔｉｎ蛋白,为研究和应用要下基础,方法：制备Ｌ－ｌｙｓｉｎｅ偶联的的Ｓｅｐｈａｒｏｓｅ４Ｂ亲和层析柱,从血浆中纯化纤溶酶原用弹性蛋白酶在体外进行有限消化,再经Ｌ－ｌｙｓｉｎｅＳｅｐｈａｒｏｓｅ４Ｂ亲和层析纯化获得天然ａｎｇｉｏｓｔａｔｉｎ片段,通过体外血管内皮细胞生长抑制分析和体内鸡胚尿囊膜血管生成抑制实验测定纯化蛋白活性。结果：以     

小鼠endostatin基因的克隆与C6鼠脑胶质瘤的治疗

目的 克隆小鼠ｅｎｄｏｓｔａｔｉｎ基因,检测其表达蛋白的生物学活性,应用该蛋白治疗大鼠Ｃ６脑胶质瘤。方法 从小鼠胶原ＸⅧｃＤＮＡ用ＰＣＲ法克 ｅｎｄｏｓｔａｔｉｎ基因,重组入ＰＵＣ１９,测序后构建非融合表达载体ｐＤＨ－ｅｎｄｏｓｔａｔｉｎ,使其在ＤＨ５α内经温度诱导表达,纯化该表达蛋白并用鸡胚绒 囊膜 内皮细胞抑制实验检测其活性,经荷瘤大鼠皮下注射该蛋白治疗其脑胶质瘤,结果 成功获得５５１ｂｐ的ｅ     

血管内皮细胞生长因子在哺乳动物细胞的表达

目的：本实验试图构建具有生物学活性的ＶＥＧＦ真核表达载体,为ＶＥＧＦ基因治疗提供载体。方法：将已获得的ｈＶＥＧＦ１６５ ｃＤＮＡ克隆到ＧＳＴ融合表达载体,构建原核表达质粒,转染大肠杆菌ＤＨ５α,ＩＰＴＧ诱导表达,Ｗｅｓｔｅｒｎ ｂｌｏｔ鉴定表达产物。在此基础上构建真核表达载体ｐｃＤＮＡ３ ／ｈＶＥＧＦ１６５,脂质体介导转染ＣＨＯ－Ｋ１细胞,Ｇ－４１８筛选,Ｎｏｒｔｈｅｒｎ ｂｌｏｔ,Ｗｅｓｔ－ｅｒｎ ｂｌｏｔ分别检测其在细胞内的转录和表达情况,３Ｈ－ＴｄＲ掺入法检测表达蛋白的活性。结果：实验组的Ｎｏｒｔｈｅｒｎ ｂｌｏｔ和Ｗｅｓｔｅｒｎ ｂｌｏｔ出现特异性条带,而对照组在相应部位未出现条带。实验组的大鼠心肌血管内皮细胞３Ｈ－ＴｄＲ掺入率明显高于对照组（Ｐ＜ ０．００１）。结论：本实验所构建的ＶＥＧＦ真核表达质粒能够在真核细胞内获得表达,其表达产物具有血管内皮细胞增殖刺激活性。     

Angiostatin的分离纯化

本研究探讨了在肿瘤血管形成过程中的重要因子ａｎｇｉｏｓｔａｔｉｎ的分离纯化，将从过期人血浆中纯化的ｐｌａｓｍｉｎｏｇｅｎ经猪胰蛋白酶消化，应用亲和色谱法得到ａｎｇｉｏｓｔａｔｉｎ，ｓｐｓ－ＰＡＧＥ电泳显示ａｎｇｉｏｓｔａｔｉｎ分子量为３８，０００，提示采用的方法切实可行，可分离出高纯度的ａｎｇｉｏｓｔａｔｉｎ。     

肿瘤坏死因子相关凋亡诱导配体的克隆,表达及重新折叠

目的：人的肿瘤坏死因子相关凋亡诱导配体（ＴＮＦ－ｒｅｌａｔｅｄ ａｐｏｐｔｏｓｉｓ ｉｎｄｕｃｉｎｇ ｌｉｇａｎｄ,ＴＲＡＩＬ）基因经扩增后,克隆在大肠杆菌中表达并重新折叠并获得有活性的ＴＲＡＩＬ蛋白。方法：用ＰＣＲ的方法从人胎盘ｃＤＮＡ库中扩增ＴＲＡＩＬ基因,经序列分析鉴定,再克隆到原核表达载体ｐＥＴ１１ａ,经Ｅ．ｃｏｌｉ ＢＬ２１（ＤＥ３）表达,电泳鉴定后,柱层析纯化,重新折叠,流式细胞术等     

Cloning and sequencing of the fragment of angiostatin K(13) gene

Ｏｂｊｅｃｔｉｖｅ　ＴｏｓｅｃｕｒｅａｎｔｉｅｎｄｏｔｈｅｌｉｏｃｙｔｅｈｙｐｅｒｐｌａｓｉａｆｕｎｃｔｉｏｎａｌｆｒａｇｍｅｎｔｏｆｈｕｍａｎａｎｇｉｏｓｔａｔｉｎＫ（１３）ｇｅｎｅ－Ｍｅｔｈｏｄｓ　ＡｓｔｈｅｔｅｍｐｌａｔｅｏｆｌｅｕｋｏｃｙｔｏｔｉｃｃＤＮＡ,ｆｕｎｃｔｉｏｎａｌｆｒａｇｍｅｎｔｏｆｈｕｍａｎａｎｇｉｏｓｔａｔｉｎＫ（１３）ｃＤＮＡｗａｓａｍｐｌｉｆｉｅｄｂｙＰＣＲ,ｃｌｏｎｅｄｉｎｔｏｔｈｅｖｅｃｔｏｒｐＧＥＭ３Ｚｆ,ａｎｄｓｅｑｕｅｎｃｅｄａｃｃｏｒｄｉｎｇｔｏ…     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.