十一酸睾酮对胃上皮细胞生长的实验研究

目的：观察十一酸睾酮对正常胃上皮细胞株HFI－145生物学行为的影响，评价此药的安全性。方法：用不同浓度的十一酸睾酮作用细胞，MTT方法研究细胞生长状况，FCM观察细胞周期分布，TUNEL法检测细胞凋亡。比较不同浓度作用组间差异以及与对照组的差异。结果：0．0004μmol/L－0．4μmol/L十一酸睾酮对HFI－145细胞作用不明显，4μmol/L逍度能抑制细胞生长，并且有时间依赖性，作用第3天抑制率为27％；4μmol/L用药组细胞的G0／G1期比较较对照组增多；FCM以及TUNEL未发现凋亡百分比的改变。结论：药理浓度范围内十一酸睾酮对正常胃粘膜上皮细胞无毒性作用，高浓度十一酸睾酮抑制胃上皮细胞生长。     

藤黄酸诱导膀胱癌细胞凋亡和细胞周期阻滞作用

目的：藤黄酸能抑制包括乳腺癌、肝癌、血液系肿瘤以及乳腺癌在内的多种肿瘤细胞的生长,但是目前对于藤黄酸在泌尿系肿瘤作用的报道尚少。文中旨在研究藤黄酸诱导膀胱癌细胞凋亡和细胞周期阻滞作用可能的机制。方法实验分为4组,藤黄酸1．0μmol／L组、2．0μmol／L组、3．0μmol／L组及阴性对照组（加入等渗盐水）。体外培养人膀胱癌细胞株BIU-87,将不同浓度藤黄酸加入处于对数生长期的人膀胱癌BIU-87细胞共培养,免疫组化法检测瘤组织Caspase-3蛋白的表达,使用流式细胞仪检测分析藤黄酸诱导人膀胱癌细胞的凋亡作用和细胞周期变化。结果藤黄酸1．0μmol／L组、2．0μmol／L组、3．0μmol／L组免疫组化评分分别为（4．28±1．86、5．03±0．78和6．47±1．31）,较对照组（2．13±1．27）明显升高,差异均有统计学意义（ P＜0．05）。流式细胞术结果显示：细胞周期 G0／G1期细胞逐渐减少,G2／M 期细胞逐渐增多,S期细胞变化不明显。结论藤黄酸可通过增加 Caspase-3蛋白的表达来促进膀胱癌细胞凋亡,可阻滞膀胱肿瘤细胞周期,抑制膀胱肿瘤细胞的增殖。     

多西紫杉醇对人舌鳞癌Tca8113细胞的生长抑制作用

目的研究多西紫杉醇对人舌鳞癌Tca8113细胞增殖及凋亡的作用。方法将0．1μmol／L的多西紫杉醇分别作用于Tca8113细胞12、24、48h,分别用倒置显微镜观察细胞形态、流式细胞术检测细胞凋亡状况;将浓度为0．001、0．01、0．1、1、10μmol／L的多西紫杉醇分别作用于Tea8113细胞12、24、48h后,用MTT法检测细胞增殖状况。结果多西紫杉醇对Tea8113细胞的增殖有明显的抑制作用,且浓度在0．001、0．01、0．1、1、10μmol／L时呈时间和浓度依赖性;镜下可见典型的凋亡细胞形态学特征。流式细胞术检测：多西紫杉醇浓度为0．1μmol／L时,作用12、24、48h,凋亡率增加,细胞阻滞于G2／M期。结论多西紫杉醇对Tca8113细胞有增殖抑制和诱导凋亡作用,这可能与抗癌机制有关。     

紫杉醇脂质体对子宫内膜癌HEC-1A细胞体外杀伤作用的研究

目的探讨注射用紫杉醇脂质体对人子宫内膜癌细胞系的体外杀伤作用。方法以0．01μmol／L、0．1μmol／L、1μmol／L、10μmol／L、100μmol／L浓度梯度的合注射用紫杉醇脂质体培养基作用于人子宫内膜癌细胞系HEC-1A细胞，并设对照（普通培养基），通过MTT、显微镜观察细胞形态、流式细胞分析技术检测该药对细胞生长的影响。结果经上述浓度紫杉醇脂质体作用48h后，细胞存活率下降；镜下观察显示部分细胞皱缩变形，崩解坏死，细胞脱壁悬浮；流式细胞结果显示细胞凋亡率逐渐增加，分别为（2．44±0．98）％、（7．30±2．11）％、（13．64±5．46）％、（15．26±9．73）％、（16．46±11．20）％、（25．61±12．32）％；细胞周期各时相中，S期比例减少。结论紫杉醇脂质体可抑制子宫内膜癌HEC-1A细胞的生长。     

番茄红素抑制人脑胶质瘤U251细胞生长的实验研究

目的探讨番茄红素对体外培养的人脑胶质瘤U251细胞增殖及诱导凋亡的作用。方法用CCK-8法检测不同浓度番茄红素作用于U251细胞24h、48h及72h后细胞的存活率;应用流式细胞术（FCM）检测细胞周期。结果番茄红素能抑制人脑胶质瘤U251细胞的生长,呈量-效及时-效关系（P〈0．01）;FCM检测表明,细胞主要被阻滞在G0／G1期;番茄红素诱导细胞凋亡率较对照组明显增加（P〈0．01）,具有浓度依赖性。结论番茄红素能抑制U251细胞增殖,诱导细胞凋亡。     

姜黄素诱导卵巢癌细胞株A2780细胞周期阻滞和凋亡

目的 探讨姜黄素对卵巢癌细胞株A2780的生长抑制作用及其机制。方法 10一50μmol/L姜黄素作用6—24h后，MTT比色法检测细胞生长活性，流式细胞仪测定细胞周期时相变化，末端TdT酶标记技术和DNA Ladder检测细胞凋亡；透射电镜观察细胞超微结构变化。结果 姜黄素能显著抑制卵巢癌细胞株A2780的体外生长，呈时间与剂量依赖性；细胞周期阻滞于G0／Gl期；部分细胞出现凋亡形态学改变，凝胶电泳可见“梯形”条带，凋亡率为6．41％一28．48％(P＜o．01)。结论 姜黄素通过抑制细胞增殖、诱导细胞凋亡等机制，能显著地抑制卵巢癌细胞的体外生长。     

索拉非尼对肾癌786-O细胞株体外培养的增殖抑制作用

目的探讨索拉非尼对体外培养的肾癌786-O细胞株细胞增殖、细胞周期和凋亡的影响。方法体外培养人肾癌786-O细胞株,给予不同浓度（10．0、50、25、1．0、0．5μmol／L）的索拉非尼混合处理,采用MTT法检测细胞增殖的变化,并采用流式细胞仪检测索拉非尼对786-O细胞凋亡和细胞周期变化的作用。结果经索拉非尼处理后,镜下可见786—O细胞株细胞结构消失,各孔内可见大量紫黑色针状结晶物,但随着药物浓度的升高,针状结晶物逐渐减少。与对照组比较,10．0、5．0和2．5μmol／L组吸光度值均显著下降（均P〈0．01）、细胞抑制率均显著升高（均P〈001）,100和5．0umol／L组细胞存活率均显著下降（均P〈0．01）。与对照组比较,5．0、2．5、1．0μmol／L组G0／G1期细胞所占比例均显著升高（均P〈0．01）、S期细胞所占比例均显著下降（均P〈0．01）;而GJM期细胞所占比例仅5．0μmol／L组显著升高（P〈0．01）。结论索拉非尼可以抑制人肾癌786-O细胞株的增殖,诱导肾癌细胞凋亡。     

三氧化二砷诱导肠癌HT-29细胞周期阻滞及凋亡的研究

目的：探讨三氧化二砷（AsO3）对结肠癌细胞增殖的抑制作用及对细胞周期和凋亡的影响。方法：采用MTr法测定细胞增殖活力，通过细胞形态学观察细胞分裂及凋亡，应用流式细胞仪进行细胞周期解析、凋亡的检测。结果：As2O3呈剂量-时间依赖性抑制结肠癌HT-29细胞系的增殖，作用24、48及72h后抑制50％细胞生长的药物浓度（IC50）分别为40．03,13．76,4．53μmol/L，与对照组差异显著（P〈0．05）。2μmol/L与5μmol/L的As2O3作用24h后，细胞周期出现G2/M期阻滞及亚二倍体凋亡峰，随着作用时间的延长，凋亡细胞随岛，M期细胞减少而逐渐增多。细胞形态学观察分裂期细胞及凋亡细胞明显增加。结论：As12O3抑制结肠癌HT-29细胞的增殖，诱导G2/M期阻滞及细胞凋亡。     

新生霉素衍生物FM-Nov17抑制慢粒白血病细胞增殖与其诱导DNA损伤的关系

目的研究新生霉素衍生物FM—Nov17抑制K562和K562／G01细胞增殖的作用与其诱导DNA损伤的关系。方法3－（4,5－二甲基噻唑－2）－2,5－二苯基四氮唑溴盐（MTT）及羟基荧光素二醋酸盐琥珀酰亚胺脂（CFSE）染色法检测FM—Nov17对K562及K562／G01细胞增殖的影响;流式细胞光度术检测FM—Nov17诱导K562及K562／G01细胞DNA损伤、细胞周期阻滞和细胞凋亡;Westernblot探讨FM—Nov17对DNA损伤、细胞周期和细胞凋亡调控通路相关蛋白表达的影响。结果FM—Nov17在体外可明显抑制K562和K562／G01细胞增殖,半数抑制率（IC50）分别为（58．28±0．31）和（62．36±0．14）μmol／L,并减少K562及K562／G01细胞的增殖分裂代数;FM—Nov17能诱导细胞DNA损伤和阻滞细胞于G。／M期,并增加细胞凋亡率,呈剂量依赖关系;FM—Nov17能增加y-H2AX、ATM、P53的磷酸化水平以及Parp和Caspase3的切割,减少CDC25A和CDC25C的表达。结论FM—Nov17通过诱导DNA的损伤,阻滞细胞于G2／M期,激活线粒体凋亡通路,诱导细胞的凋亡,抑制K562和K562／G01细胞的增殖。     

蛋白酶体抑制剂MG132对Raji细胞增殖和凋亡的影响

目的：探讨蛋白酶体抑制剂MG132对人Burkitt’s淋巴瘤Raji细胞体外增殖和凋亡的影响。方法：不同浓度（0．5、1．0、5．0、10．0和50．0μmol／L）的MG132处理Raji细胞24h和48h,MTT法检测细胞增殖情况;5．0μmol／LMG132处理Raji细胞24h,流式细胞术进行细胞凋亡率及细胞周期分析。结果：浓度为1．0、5．0、10．O、50．0μmol／L的MG132作用于Raji细胞24h和48h后,细胞增殖OD（A490nm）值均显著低于对照组（P〈0．05）,增殖抑制率（20．60±10．28）％～（60．40±2．75）％,随MG132浓度的增加和作用时间的延长细胞增殖抑制率增高,抑制作用呈现剂量和时间依赖性;5．0μmoL／L的MG132作用Raji细胞24h后,实验组细胞凋亡率为25．86％,对照组为0．06％,实验组s期细胞比率（51．70％）较对照组（39．83％）上升,而G0／G1期细胞比率（33．54％）较对照组（46．04％）下降。结论：蛋白酶体抑制剂MG132可显著抑制Raji细胞的增殖并诱导其发生凋亡和G2／M期阻滞。     

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.