诱导型一氧化氮合酶和血管内皮生长因子在舌癌细胞株中的表达

【目的】探讨诱导型一氧化氮合酶（iNOS）和血管内皮生长因子（VEGF）在舌鳞癌细胞株Tca8113中的表达,为进一步研究iNOS和VEGF在舌鳞癌肿瘤血管生成中的作用提供实验基础。【方法】采用逆转录-聚合酶链反应（RT-PCR）法和SP免疫组化方法,对舌鳞癌细胞株Tca8113中iNOS和VEGF mRNA和蛋白表达情况进行检测。【结果】RT-PCR检测到舌鳞癌Tca8113细胞株中iNOS／VEGF mRNA条带明显,SP免疫组化检测到iNOS／VEGF蛋白在舌癌细胞胞浆中呈强阳性表达。【结论】iNOS／VEGF mRNA和蛋白在舌鳞癌Tca8113细胞株中呈高水平表达。     

Iressa与顺铂联合抑制舌鳞癌细胞增殖的实验研究

【目的】探讨EGFR靶向治疗药物Iressa与顺铂联用对舌鳞癌细胞增殖的抑制作用。【方法】采用MTT的方法检测Iressa与顺铂联用对舌鳞癌细胞系Tscca和Tca8113抑制作用的效率。【结果】Iressa抑制Tscca和Tca8113细胞增殖的IC50值分别为18.03 μmol/L和29.98 μmol/L（P=0.002）;Iressa与顺铂联用加强了对舌鳞癌细胞系Tscca、Tca8113的增殖抑制,而且当Iressa提前24h或48h使用时,这种协同作用更加明显。【结论】Iressa可抑制舌鳞癌细胞系Tscca和Tca8113的增殖,与顺铂联用可协同抑制Tscca和Tca8113的增殖,这种抑制作用具有浓度和顺序依赖性。     

血管内皮生长因子及其受体在舌癌细胞中表达及意义

【目的】探讨人舌癌细胞株血管内皮生长因子(VEGF)及其受体KDR、Flt-1的表达,进一步认识VEGF在舌癌生长过程中的作用机制。【方法】以人脐静脉血管内皮细胞ECV304和小鼠成纤维细胞系L929作为对照,应用免疫组化染色和RT-PCR方法,检测体外培养的人舌癌细胞系Tca8113、GNM中VEGF及其受体的表达。【结果】GNM、Tca8113中皆有VEGF表达,Tca8113表达KDR和FLT-1,GNM表达KDR。【结论】在舌癌的生长过程中可能存在VEGF的自分泌机制。     

血管内皮生长因子及其受体在舌癌细胞中表达及意义

【目的】探讨人舌癌细胞株血管内皮生长因子(VEGF)及其受体KDR、Flt-1的表达，进一步认识VEGF在舌癌生长过程中的作用机制。【方法】 以人脐静脉血管内皮细胞ECV304和小鼠成纤维细胞系L929作为对照，应用免疫组化染色和RT-PCR方法，检测体外培养的人舌癌细胞系Tca8ll3、GNM中VEGF及其受体的表达。【结果】GNM、Tca8113中皆有VEGF表达，Tca8113表达KDR和FLT-1,GNM表达KDR。【结论】在舌癌的生长过程中可能存在VEGF的自分泌机制。     

Iressa与顺铂联合抑制舌鳞癌细胞增殖的实验研究

 【目的】探讨EGFR靶向治疗药物Iressa与顺铂联用对舌鳞癌细胞增殖的抑制作用。【方法】采用MTT的方法检测Iressa与顺铂联用对舌鳞癌细胞系Tscca和Tca8113抑制作用的效率。【结果】Iressa抑制Tscca和Tca8113细胞增殖的IC50值分别为18.03 μmol/L和29.98 μmol/L(P=0.002);Iressa与顺铂联用加强了对舌鳞癌细胞系Tscca、Tca8113的增殖抑制,而且当Iressa提前24h或48h使用时,这种协同作用更加明显。【结论】Iressa可抑制舌鳞癌细胞系Tscca和Tca8113的增殖,与顺铂联用可协同抑制Tscca和Tca8113的增殖,这种抑制作用具有浓度和顺序依赖性。     

人舌鳞状细胞癌耐放疗细胞系的构建及多药耐药基因和蛋白的表达

目的:建立人舌鳞状细胞癌耐放疗细胞系并检测多药耐药基因和蛋白的表达.方法:利用人舌鳞癌细胞株Tca8113, 采用单次剂量1 Gy,每周2次的60Co照射,诱导其耐放疗性,建立一株耐放疗的人舌鳞癌细胞系.并用免疫组化以及RT-PCR检测多药耐药基因的表达.结果:耐放疗的Tca8113细胞最大耐受剂量为20 Gy,多药耐药基因和蛋白表达水平明显增高. 结论:成功建立耐放疗细胞系,为口腔癌放疗耐药研究提供了细胞模型.     

转人B7-H3基因鳞癌细胞株的建立及其检测

目的探讨转入B7-H3基因鳞癌细胞株的建立及其检测。方法采用脂质体介导法将已建好的真核表达质粒pEGFP-C1-B7-H3导入人鳞癌细胞Tca8113中（Tca8113/B7-H3）,RT-PCR检测B7-H3在该细胞中的表达,Western blot检测其蛋白的表达。经G418筛选后,用有限稀释法建立稳定高表达的带有B7-H3基因的Tca8113鳞癌细胞株。结果RT-PCR方法检测到目的基因B7-H3的一个215bp大小的cDNA扩增产物;DAB显色,裂解的Tca8113/B7-H3基因转染细胞膜蛋白中相对分子质量约65～86ku大小的特异性条带。转染B7-H3的Tca8113细胞,经过细胞传代培养后仍然能够检测到高表达的B7-H3基因,经过有限稀释法建立了Tca8113/B7-H3细胞株。结论成功建立了Tca8113/B7-H3细胞株,为以后的体内外试验提供了很好的平台,为近一步研究其抗肿瘤作用奠定了基础。     

干扰素调节因子1对舌鳞癌细胞增殖侵袭和迁移的影响

目的 研究干扰素调节因子对舌鳞癌细胞的侵袭和迁移的影响.方法 采用实时定量PCR和免疫组化检测IRF1在舌鳞癌组织中的表达水平,通过构建IRF1的过表达和IRF1沉默的质粒,在舌鳞癌细胞Tca8113中过表达IRF1或降低IRF1的表达水平后,检测其对Tca8113细胞增殖,侵袭和迁移的影响.结果 IRF1在舌鳞癌组织...     

Dicer在舌癌细胞中的表达及意义

目的探讨Dicer基因在口腔上皮细胞和舌鳞癌细胞中的表达及意义。方法应用免疫组织化学技术(SV-0002两步法)、蛋白印迹分析(Western blot)和实时定量聚合酶链反应(RT-PCR)检测人口腔上皮细胞和舌鳞细胞株Tca-8113、UM-1中Dicer的蛋白质和mRNA表达。结果 Dicer在口腔上皮细胞中的蛋白质和mRNA表达高于Tca-8113和UM-1,Tca-8113的蛋白质表达水平高于UM-1。结论 Dicer在舌鳞细胞株中的表达较正常口腔上皮细胞者下降,且其低表达可能促进了舌鳞癌的发展。     

转人B7-H3基因鳞癌细胞株的建立及其检测

目的探讨转入B7-H3基因鳞癌细胞株的建立及其检测。方法采用脂质体介导法将已建好的真核表达质粒pEGFP-C1-B7-H3导入人鳞癌细胞Tca8113中(Tca8113/B7-H3),RT-PCR检测B7-H3在该细胞中的表达,Western blot检测其蛋白的表达。经G418筛选后,用有限稀释法建立稳定高表达的带有B7-H3基因的Tca8113鳞癌细胞株。结果RT-PCR方法检测到目的基因B7-H3的一个215bp大小的cDNA扩增产物;DAB显色,裂解的Tca8113/B7-H3基因转染细胞膜蛋白中相对分子质量约65～86ku大小的特异性条带。转染B7-H3的Tca8113细胞,经过细胞传代培养后仍然能够检测到高表达的B7-H3基因,经过有限稀释法建立了Tca8113/B7-H3细胞株。结论成功建立了Tca8113/B7-H3细胞株,为以后的体内外试验提供了很好的平台,为近一步研究其抗肿瘤作用奠定了基础。     

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.