他莫昔芬联合顺铂对人卵巢癌细胞HO-8910增殖抑制作用的研究

目的:验证他莫昔芬(TAM)和顺铂(DDP)两种药物联合应用抑制人卵巢癌细胞HO-8910增殖作用的有效性,为卵巢癌的内分泌治疗和化学治疗联合应用提供理论依据。方法:以体外培养的HO-8910细胞为研究对象,不同剂量的TAM和DDP联合作用于HO-8910细胞,MTT法检测细胞生长抑制率;免疫组化SP法检测PCNA在细胞中的表达;流式细胞仪PI染色法分析细胞周期分布的改变,并用AV-PI双染色法检测TAM联合DDP对细胞凋亡的影响。结果:TAM和DDP联合用药组与阳性对照组相比,大剂量TAM合用不同剂量的DDP组及中剂量TAM合用大剂量DDP(3.3μmol/L)组,细胞生长抑制率有显著性差异(P<0.05);TAM浓度≥1.0μmol/L合用不同剂量的DDP时PCNA表达阳性率有显著性差异(P<0.05);TAM使G1期细胞抑制,DDP作用于G1期细胞,G1期减少,细胞阻滞于S期;TAM和DDP联合应用时随着药物浓度增加凋亡指数逐渐增大。联合用药组组间比较,大剂量TAM合用小剂量DDP(1.7μmol/L)组与中剂量TAM合用大剂量DDP(3.3μmol/L)组间细胞生长抑制率及PCNA表达阳性率无显著性差异(P>0.05)。结论:TAM和DDP联合用药可有效抑制人卵巢癌细胞HO-8910细胞生长及增殖。     

罗格列酮对耐药乳腺癌细胞影响的研究

目的：探讨罗格列酮( ROS)对耐他莫西芬( TAM)的乳腺癌细胞MCF-7/TAM体外生长的影响,及对其耐药性的逆转效果和作用机制。方法采用四甲基偶氮唑蓝( MTT)比色分析法测定ROS作用于MCF-7/TAM细胞后的抑制率及逆转耐药的效果;采用流式细胞术检测ROS作用MCF-7/TAM细胞后的凋亡率;采用实时定量荧光 PCR 技术检测ROS作用MCF-7/TAM细胞后对FOXA1、ERα、ErbB-2和P53基因表达的影响。结果 ROS干预MCF-7/TAM细胞后,呈量-效和时-效关系抑制其增殖。半数抑制浓度(136μmol/L)的ROS对MCF-7/TAM细胞具有明显的逆转耐药效果,逆转耐药倍数为2.05倍。高浓度可诱导MCF-7/TAM细胞凋亡。半数抑制浓度(136μmol/L)的ROS作用MCF-7/TAM细胞后,能够上调FOXA1、ERα和P53基因表达水平(P<0.05),下调ErbB-2基因表达水平(P<0．05)。结论ROS可抑制MCF-7/TAM细胞增殖,高浓度ROS可诱导其凋亡,其机制可能与上调 P53基因表达有关。 ROS 可逆转MCF-7/TAM细胞的耐药性,逆转机制可能与上调FOXA1和ERα基因表达,下调ErbB-2基因表达有关。     

他莫昔芬对人乳腺癌细胞(MCF-7)周期进程的影响

目的 :通过不同浓度的他莫昔芬 (TAM)对体外培养的MCF - 7细胞周期进程的影响 ,探讨TAM治疗乳腺癌的作用机制。以便为MCF - 7细胞同步化后 ,再应用化疗药物 ,为临床治疗乳腺癌奠定理论基础。方法 :采用人乳腺癌细胞MCF - 7体外培养 ,加入不同浓度的TAM(即 0 1nm ,10nm ,10 0nm和 1μm)培养一定时间后 ,检测其细胞周期各时相的变化。结果 :发现随TAM浓度的增高 ,MCF - 7细胞G0 /G1期不断增高。结论 :TAM可抑制MCF - 7细胞周期进程。TAM浓度在 1μm时 ,89 6 %的MCF - 7细胞集中在G0 /G1期。     

三苯氧胺联合顺铂抑制人卵巢癌细胞HO-8910增殖的实验研究

目的:研究三苯氧胺(TAM)和顺铂(DDP)对人卵巢癌细胞生长的影响,验证两种药物联合应用治疗人卵巢癌的有效性。方法:以体外培养的人卵巢癌HO-8910为研究对象,不同剂量的TAM和DDP联合作用于人卵巢癌细胞HO-8910,用四甲基偶氮唑蓝比色(MTT)法检测细胞生长抑制率,用免疫组化SABC法检测增殖细胞核抗原(PCNA)在细胞中的表达。结果:TAM和DDP联合用药组与单用DDP组相比,大剂量TAM5.0μmol/L合用DDP及中剂量TAM1.0μmol/L合用大剂量DDP3.3μmol/L细胞生长抑制率有显著性差异(P<0.05);TAM浓度(≥1.0μmol/L)合用DDP时PCNA阳性率有显著差异(P<0.05)。结论:TAM和DDP联合用可有效抑制HO-8910细胞生长及增殖。     

三苯氧胺联合5-氟尿嘧啶对人结肠癌细胞HT-29的抑制作用

目的 探讨三苯氧胺(tamoxifen,TAM)联合5-氟尿嘧啶(5-FU)对人结肠癌细胞株HT-29的增殖、凋亡及细胞迁移的影响.方法 采用MTT法、流式细胞仪分别检测不同浓度(12.5、25、50 μmol/L)5-FU及其联合TAM对HT-29细胞增殖的抑制作用、细胞凋亡的诱导作用,应用细胞划痕实验检测TAM(1×10-7、1×10-6、1×10-5、1×10-4mol/L)、5-FU及其联合TAM对细胞迁移的抑制作用.结果 5-FU及其联合TAM均可提高HT-29细胞增殖抑制率,单用5-FU的抑制率分别为(50.8±8.9)%和(62.8±8.8)%和(69.7±9)%,12.5 μmol/L 5-FU联合低浓度TAM(1×10-7、1×10-6 mol/L)的抑制率分别为(82.9±2.9)%和(84.0±1.6)%,其作用呈剂量依赖关系;高浓度(1×10-4mol/L)TAM联合12.5 μmol/L 5-FU表现出明显的促细胞凋亡作用[凋亡率为(95.7±4.2)%];划痕实验证实经1×10-6和1×10-5mol/L TAM及单用5-FU处理HT-29细胞72 h后均可明显地抑制细胞的迁移,但联合用药未显示出较TAM单药更明显的抑制作用.结论 TAM和5-FU均具有抑制细胞增殖、迁移和促进细胞凋亡的作用,TAM亦可增加结肠癌细胞株HT-29对5-FU的敏感性.     

小檗碱对与肿瘤相关巨噬细胞共培养的人子宫内膜癌Ishikawa细胞株的作用

目的 研究小檗碱对与肿瘤相关巨噬细胞(TAM)共培养的人子宫内膜癌Ishikawa细胞的作用,以及对炎性因子白细胞介素-8(IL-8)和细胞核转录因子-κBp65( NF-kBp65)表达的影响.方法 MTT法检测小檗碱抑制人子宫内膜癌Ishikawa细胞株增殖的有效浓度和时间,以及小檗碱对与TAM共培养的人子宫内膜癌...     

多柔比星影响他莫昔芬对MCF-7乳腺癌细胞的作用

目的研究多柔比星(ADM)影响他莫昔芬(TAM)对MCF-7乳腺癌细胞的作用及作用机制。方法 MTT检测在ADM作用后, TAM对MCF-7乳腺癌细胞增殖的抑制作用。Western blot检测对照组、ADM组、TAM组以及ADM+TAM组中细胞Her-2、Akt的表达情况。结果 MTT表明, TAM对MCF-7乳腺癌细胞有抑制作用(P<0.05);而MCF-7乳腺癌细胞在ADM作用后, TAM丧失了对细胞的抑制作用(P> 0.05)。Western blot表明,与对照组比较,ADM组、TAM组及ADM+TAM组MCF-7细胞中Her-2和Akt水平的表达均增高(P <0.05)。结论TAM可以抑制MCF-7乳腺癌细胞的生长,而在ADM作用后,激活信号通路,增加Her-2、Akt的表达,导致TAM的作用下降,说明在ADM作用后,TAM对细胞的抑制作用消失。     

他莫昔芬对人胶质瘤细胞的抑制作用

目的:探讨蛋白激酶C(PKC)抑制剂,他莫昔芬对人胶质瘤细胞U251生长的作用。方法:U251细胞PKCα和雌激素受体(ER)的表达用免疫组化,细胞活性分析用台盼蓝实验和四唑盐(MTT)比色实验,细胞增殖和凋亡,通过流式细胞仪进行检测,PKC抑制剂他莫昔芬(TAM)作用终浓度为5,2.5,1.25μg/m l;治疗对照为卡莫司汀(BCNU),终浓度与TAM相同。结果:细胞PKCα表达阳性,ER表达阴性。加入TAM后,U251细胞变老,脱落,细胞总数减少;活细胞比例为(82.553±12.187)%,MTT比色吸光值为0.607±0.079,空白对照组为(98.683±1.993)%和0.865±0.103,BCNU组(68.159±16.587)%和0.610±0.087,TAM组与空白对照组比较,细胞活力明显下降(P<0.001),与BCNU组比较无统计学差异;流式细胞仪检测显示TAM组G2-M期细胞相对空白对照组增多,为(12.418±3.646)%,TAM组细胞凋亡为(6.435±3.347)%,空白对照组为(1.205±0.985)%,二者有显著差异(P<0.001),并且有随着剂量减小,凋亡细胞增多的趋势(P=0.033)。提示增殖抑制,凋亡增加,卡莫司汀组表现为S期细胞增加,凋亡细胞比例比TAM明显减少(P=0.018)。结论:他莫昔芬对人U251胶质瘤细胞生长具有明显的抑制作用,可以作为人胶质瘤治疗后选方法。     

血清PG和TAM联合检测对胃癌早期诊断的价值

目的探讨血清胃蛋白酶原(PG)Ⅰ、Ⅱ和血清肿瘤相关物质(TAM)联合检测筛查胃癌的应用价值,为胃癌早期诊断提供新的理论和实验依据。方法选择80例受试者,其中胃癌患者40例,健康者40例,采用免疫比浊法测定血清PGⅠ、PGⅡ含量,并计算PGⅠ/PGⅡ比值;采用分光光度法测定血清TAM含量,分析联合检测血清PG和TAM对胃癌诊断的敏感性和特异性。结果与正常对照组相比,胃癌患者血清PGⅠ含量、PGⅠ/PGⅡ比值均显著降低(P<0.01),血清TAM含量明显升高(P<0.01),而血清PGⅡ含量无明显变化(P>0.05);单检胃癌患者血清胃蛋白酶原(PGⅠ及PGⅠ/PGⅡ)、TAM敏感性分别为75.00%、77.50%;特异性分别为72.50%、87.50%,两者联合检测在胃癌诊断中敏感性为92.50%,特异性为70.00%,联合检测的敏感性与单项检测的敏感性相比差异具有显著性(P<0.05)。结论联合检测血清胃蛋白酶原(PG)与血清肿瘤相关物质(TAM)筛查胃癌优于PG或TAM单筛,可明显提高胃癌早期诊断灵敏度。     

维生素E琥珀酸酯联合三苯氧胺对乳腺癌荷瘤裸鼠的治疗作用

目的:检测维生素E琥珀酸酯(VES)联合三苯氧胺(TAM)对荷乳腺癌裸鼠的体内肿瘤的抑制作用,并探讨其可能的作用机制.方法:40只裸鼠皮下接种MCF-7乳腺癌细胞建立荷瘤裸鼠模型,分为空白对照组(不予治疗)、TAM治疗组(予5 mg/kg TAM治疗)、VES治疗组(予150 mg/kg VES治疗)、联合治疗组(5 mg/kg TAM 150 mg/kg VES),每组10只,治疗4周后测量各组肿瘤大小,流式细胞仪检测细胞周期变化和细胞表面Fas和FasL表达,免疫组化法检测肿瘤组织Fas和FasL表达,TUNEL法检测细胞凋亡指数的变化.结果:VES联合TAM对荷乳腺癌裸鼠体内肿瘤具有明显的增殖抑制作用,较单用VES或TAM抑制作用增强(P<0.05).细胞周期分析显示,联合药物治疗后肿瘤细胞表现为明显的G0/G1期阻滞,肿瘤组织和细胞表面的Fas和FasL表达上调,同时细胞的凋亡率升高.结论:VES联合TAM对荷乳腺癌裸鼠体内肿瘤具有协同抑制作用,其机制可能与上调肿瘤细胞Fas/FasL表达,促进细胞凋亡有关.     

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.