5F对非小细胞肺癌NCI-H460细胞survivin、p65和bcl-2mRNA的影响

目的：研究5F对非小细肺癌NCI—H460细胞survivin、p65和bcl-2mRNA水平的影响。方法：MTT法检测5F对NCI—H460细胞的生长抑制作用;用半定量RT—PCR方法检测survivin、p65及bcl一2mRNA水平的变化。结果：5F抑制NCI—H460细胞的生长,其效果与5F的浓度和作用时间相关,24、48、72h的IC50分别为：21．40、4．52、1．02μg·mL^-1：100μg·mL^-1。5F作用NCI—H460细胞6h后能引起survivinmRNA水平显著的降低（P〈0．05）,24h后出现增加（P〈0．05）;p65和bcl-2mRNA水平在作用3h就发生明显减少（P〈0．05）。结论：5F诱导NCI—H460细胞凋亡的机制可能是通过抑制survivin、p65和bcl-2mRNA水平来发挥作用的。     

茶多酚对人肺癌H460细胞凋亡影响

目的通过体外细胞培养实验探讨茶多酚对人肺细胞H460生长抑制作用及其作用机制方法体外培养人肺癌H4N）细胞,分对照组及茶多酚药物组（茶多酚终浓度为100μg／m1）,加药后继续培养12h、24h、36h,应用荧光显微镜下观察细胞核的形态变化,流式细胞仪观察茶多酚诱导细胞凋亡的作用及阻滞细胞周期的作用、结果MTT法显示茶多酚可抑制肺癌细胞的增殖活性,其抑制作用随时间的延长而增强流式细胞术发现茶多酚可使肺癌细胞阻滞于G1期     

重组TRAIL诱导肺腺癌细胞系细胞凋亡的实验研究

目的 研究重组可溶性TRAIL作用于人肺癌系A549细胞培养物后,细胞凋亡的形态变化和凋亡率测定.方法 MTT比色法测定重组TRAIL对肺腺癌A549细胞的生长抑制率.TRAIL处理前后细胞核、质的形态学变化.经不同浓度重组TRAIL处理后A549细胞的双色荧光变化.定量重组TRAIL与亚毒性浓度的CDDP联合使用,对肺腺癌A549细胞生长抑制率和凋亡率的影响.结果 重组TRAIL对A549细胞生长有明显的抑制作用,TRAIL 100 μg·L-1作用24 h后,抑制率达到41.6%.细胞形态学观察显示,A549肺腺癌细胞经50 μg·L-1TRAIL处理24 h后,可观察到典型的细胞凋亡特点.3.3 mg·L-1的CDDP与50 μg·L-1重组TRAIL合用,A549细胞凋亡率高达75.2%.结论 重组TRAIL具有明显的诱导多种恶性肿瘤细胞凋亡的作用;化疗药物CDDP能加强重组TRAIL的抗肿瘤活性.     

Caspase 8和Caspase 3在TRAIL诱导神经母细胞瘤细胞凋亡中的作用(英文)

目的探讨Caspase8和Caspase3在肿瘤坏死因子相关凋亡诱导配体（TRAIL）诱导CHP212神经母细胞瘤细胞凋亡中的作用。方法应用流式细胞仪检测TRAIL、Caspase8／Caspase3抑制剂＋TRAIL对CHP212细胞的诱导凋亡作用。应用比色法测定Caspase8、Caspase3的相对活性。应用透射电镜对凋亡细胞进行形态学的观察。结果TRAIL可诱导CHP212细胞的凋亡，并存在剂量依赖性；Caspase8／Caspase3抑制剂能抑制TRAIL对CHP212细胞的诱导凋亡作用。随TRAIL作用时间的延长，Caspase8、Caspase3的活性逐步升高，分别于作用16h、8h后达高峰。透射电镜可见到典型的细胞凋亡特征。结论TRAIL通过Caspase信号传导通路诱导CHP212细胞凋亡并伴随Caspase8和Caspase3活性的增高。     

茶多酚诱导人肺癌细胞H460凋亡及对细胞周期影响的研究

目的 通过体外细胞培养实验探讨茶多酚对人肺癌细胞H460生长抑制作用及其作用机制。方法 体外培养人肺癌H460细胞，取对数生长期细胞，调整细胞浓度至105·ml-1，接种至培养板继续培养24 h，分对照组及茶多酚药物组（茶多酚终浓度为50、100、150、200、250 ?g/mL），加药后继续培养12、24、36 h，应用MTT法、流式细胞仪及荧光显微镜观察茶多酚诱导细胞凋亡的作用及阻滞细胞周期的作用。结果 MTT法显示茶多酚可抑制肺癌细胞的增殖活性，其抑制作用随时间的延长而增强，以36 h抑制作用最强。在浓度50～150 ?g/mL范围内，抑制作用随浓度增高而增强；当浓度大于150 ?g/mL时，抑制作用随浓度增高反而减弱。流式细胞术发现茶多酚可使肺癌细胞阻滞于G1期，以36 h、150 ?g/mL时阻滞作用最强（P＜0.05）。荧光显微镜下观察到细胞核仁解体，核固缩，形成小突起并碎裂成多个小体等细胞凋亡的形态学改变。结论 茶多酚可诱导人肺癌H460细胞的凋亡，并使细胞周期阻滞于G1期。     

肿瘤坏死因子相关凋亡诱导配体对肺癌细胞的杀伤作用研究

目的研究肿瘤坏死因子相关凋亡诱导配体受体(TRAILR)在肺癌细胞株A549中的表达及TRAIL对肺癌细胞的杀伤作用,探讨TRAIL治疗肺癌的可行性。方法采用RTPCR检测非小细胞肺癌细胞株A549TRAILR的表达。采用不同浓度TRAIL处理A549,MTT法检测药物处理前后肿瘤细胞的凋亡发生率。采用不同浓度TRAIL与不同浓度的化疗药物、中药联合作用于A549,观察其疗效。结果肺癌细胞株A549中有DR5、DR4、DcR2的表达,但DcR1表达缺失。经TRAIL(100μg/L)处理48h,肺癌细胞凋亡发生率约5%。TRAIL联合化疗药物、中药可显著增强A549的凋亡率。结论A549中存在TRAILR类型的表达差异。TRAIL可诱导A549凋亡,联合化疗药物、中药可显著增强A549的凋亡率。     

Caspase 8在TRAIL诱导神经母细胞瘤细胞凋亡中的作用

目的探讨Caspase8在TRAIL（肿瘤坏死因子相关凋亡诱导配体）诱导神经母细胞瘤细胞株CHP212细胞凋亡中的作用及机制。方法应用四甲基偶氮唑蓝（MTT）比色法及流式细胞仪（FCM）检测TRAIL、Caspase8抑制剂（zIETD—FMK）＋TRAIL对CHP212细胞生长及凋亡的影响；应用比色法测定caspase8相对活性；应用透射电镜对凋亡细胞进行形态学观察。结果CHP212细胞对TRAIL的诱导凋亡作用敏感，存在时间和剂量依赖性；随TRAIL作用时间的延长，Caspase8活性逐步升高。于作用16h达高峰。zIETD-FMK能阻断Caspase8的活化而抑制TRAIL对CHP212细胞的诱导凋亡作用。透射电镜可见到典型的细胞凋亡特征。结论TRAIL通过Caspase8信号传导通路诱导CHP212细胞凋亡并伴随Caspase8活性增高。     

茶多酚诱导人肺癌细胞H460凋亡及对细胞周期的影响

目的 通过体外细胞培养实验探讨茶多酚对人肺癌细胞H460生长抑制作用及其作用机制.方法 体外培养人肺癌H460细胞,取对数生长期细胞,调整细胞浓度至1×105·mL-1,接种至培养板继续培养24 h,分对照组及茶多酚药物组(茶多酚终浓度为50、100、150、200、250 μg/mL),加药后继续培养12、24、36 h,应用MTT法、流式细胞仪及荧光显微镜观察茶多酚诱导细胞凋亡的作用及阻滞细胞周期的作用.结果 MTT法显示茶多酚可抑制肺癌细胞的增殖活性,其抑制作用随时间的延长而增强,以36 h抑制作用最强.在浓度50～150 μg/mL范围内,抑制作用随浓度增高而增强;当浓度大于150 μg/mL时,抑制作用随浓度增高反而减弱.流式细胞术发现茶多酚可使肺癌细胞阻滞于G1期,以36 h、150 μg/mL时阻滞作用最强(P＜0.05).荧光显微镜下观察到细胞核仁解体,核固缩,形成小突起并碎裂成多个小体等细胞凋亡的形态学改变.结论 茶多酚可诱导人肺癌H460细胞的凋亡,并使细胞周期阻滞于G1期.     

肿瘤坏死因子相关凋亡诱导配体对非小细胞肺癌细胞凋亡的诱导作用及其机制

目的：探讨肿瘤坏死因子相关凋亡诱导配体（TRAIL）诱导人非小细胞肺癌H596细胞发生凋亡,初步阐明非小细胞肺癌细胞经TRAIL诱导凋亡的作用和机制。方法：培养H596细胞,设对照组和不同浓度(0.01、0.03、0.10、0.30、1.00、3.00、10.00、30.00和100.00 μg•L^-1） TRAIL组,TRAIL作用H596细胞24 h后,酸性磷酸酶法检测细胞凋亡的百分率;Western blotting法检测TRAIL相关蛋白caspase-8、Bcl-2及Fas 相关死亡结构域（FADD）的表达情况。结果：TRAIL浓度为0.01～0.03 μg•L^-1时,对H596细胞的生长无明显抑制作用,细胞出现增殖趋势;从0.10 μg•L-1开始,随着TRAIL浓度升高,细胞开始出现凋亡,至10.00 μg•L^-1时细胞凋亡水平显著增加,与对照组比较差异有统计学意义（P<0.05）。Western blotting检测,caspase-8、Bcl-2和FADD蛋白表达正常。结论：高浓度的TRAIL可以诱导H596细胞发生凋亡,可能与TRAIL相关蛋白表达正常有关联。     

重组可溶性TRAIL的表达及其诱导A549和H460wt细胞凋亡

目的：获得人重组可溶性肿瘤坏死因子相关凋亡诱导配体(rsTRAIL)蛋白,并探讨其应用于非小细胞肺癌(NSCLC）治疗的前景。方法：RT-PCR从外周血单核细胞(PBMCs)中获取目的基因片段,构建重组质粒PQE₃0-TRAIL并转化入大肠杆菌(E.coli)M₁5,IPTG诱导目的蛋白表达并经镍固定金属亲和层析纯化,MTT法检测细胞增殖情况,荧光显微镜观察H460^wt细胞的形态学改变,流式细胞仪检测其凋亡率。结果：获得与GenBank中报道一致的TRAIL基因片段。SDS-PAGE电泳和免疫印 迹分析显示,获得具有TRAIL免疫原性、相对分子质量约为21 000目的蛋白。Ni²⁺-NTA agarose纯化得到单一条带蛋白。rsTRAIL处理H460^wt细胞24 h后,细胞凋亡率为43.2％,顺铂可以增强rsTRAIL对A549细胞的杀伤作用。结论：获得了与天然TRAIL蛋白具有相同生物学活性的目的蛋白,该目的蛋白具有诱导NSCLC细胞凋亡的作用,联合顺铂能够增强rsTRAIL对NSCLC的杀伤作用。     

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.