葡萄籽提取物诱导人卵巢癌SKOV3细胞凋亡及其机制的探讨

目的:探讨葡萄籽提取物(Grapee seed extract,CSE)对卵巢癌SKOV3细胞增殖和凋亡的影响及其机制.方法:体外培养的SKOV3细胞与25、50、100、200、400 μg/ml的GSE,共孵育,分别在24、48和72 h时观察细胞形态学变化,MTT检测细胞增殖抑制率,流式细胞仪和Tunel分析细胞凋亡,western-blot检测SKOV3细胞Caspase-3在蛋白水平的表达.结果:不同浓度(25、50、100、200、400μg/ml)GSE SKOV3细胞作用48 h的细胞增殖抑制率分别为48.67%、53.85%、67.03%、73.78%和77.39%.流式细胞和TUNEL检测经25 μg/mlGSE处理24、48h后,SKOV3细胞凋亡率分别为:31.98%、45.78%.GSE还可以明显增强Caspase-3蛋白的表达水平.这些作用均随GSE浓度和作用时间的延长而增强.结论:GSE可在体外抑制SKOV3细胞增殖,诱导其凋亡.其机制可能与激活Caspase途径有关.     

原花青素对前列腺癌LNCaP细胞增殖和凋亡的影响

目的 研究原花青素对人雄激素依赖性前列腺癌细胞株LNCaP细胞增殖和凋亡的影响.方法 体外培养的LNCaP细胞株与100、200、300 μg/ml的原花青素共孵育,分别在24、48和72 h时观察细胞形态学变化,MTT检测细胞增殖抑制率,流式细胞术分析细胞凋亡情况.结果 原花青素可引起LNCaP细胞形态较明显改变.不同浓度(100、200、300 μg/ml)原花青素对LNCaP细胞作用的细胞增殖抑制率分别为27.1%、72.1%和86.4%.流式细胞术检测表明原花青素可诱导LNCaP细胞凋亡,300μg/ml原花青素处理72 h引起36.5%的凋亡率.这3种作用均随原花青素浓度和作用时间的延长而增强.结论 原花青素可在体外抑制前列腺癌LNCaP细胞增殖,并促进其凋亡.     

PTEN基因转染对卵巢癌SKOV3细胞生长抑制和诱导凋亡的研究

目的研究外源性PTEN基因转染对人卵巢癌SKOV3细胞生长增殖抑制和凋亡诱导作用,探索卵巢癌的新治疗方法。方法将携带PTEN基因的真核表达载体pBP-PTEN和不含该基因的空载体pBP转染卵巢癌SKOV3细胞,实验分组为pBP-PTEN、pBP和SKOV3组,四甲基偶氮唑蓝(MTT)法观察对SKOV3细胞的生长抑制作用,Annexin V/PI双标记流式细胞术检测转染后对SKOV3细胞的凋亡诱导作用,Annexin V/PI双染荧光显微镜观察细胞凋亡形态。结果MTT检测,0.1、0.2和0.3μg/孔PTEN质粒DNA转染SKOV3细胞48 h,生长抑制率分别为13.31%、27.67%、42.25%,不同时间点(24、48和72 h)检测,细胞生长抑制率存在剂量-时间依赖关系。光镜观察,转染24 h后即可见明显的形态学改变。流式细胞术检测,4μg/孔PTEN质粒DNA转染SKOV3细胞24和48 h后,细胞凋亡率分别达38.08%和65.60%(P<0.01)。Annexin V/PI双染荧光显微镜观察,细胞凋亡率存在时间-剂量以来关系。结论PTEN基因转染抑制人卵巢癌细胞增殖并显著诱导细胞凋亡。     

番茄红素对卵巢癌SKOV3细胞增殖和凋亡的影响

目的 研究番茄红素（lycopene,LP）对人卵巢癌SKOV3细胞增殖和凋亡的影响及其作用机制。方法 取对数生长期SKOV3细胞随机分为5组：正常对照组、LP（20、10、5μg/ml）组和顺铂（40μg/ml）组（阳性对照组）,每组10个复孔。给药干预48h后,观察比较各组细胞生长状况并采用MTT比色法测定细胞增殖抑制率;通过流式细胞术（flow cytometry）分析细胞周期的改变、检测细胞凋亡并计算细胞凋亡率,免疫印迹法（Western blot）检测caspase-3蛋白表达并进行半定量分析,反转录PCR（RT-PCR）技术检测Bax mRNA和bcl-2 mRNA表达并计算Bax/bcl-2表达比值。结果 与正常对照组比较,LP各组SKOV3细胞呈现不同程度的细胞脱壁、细胞间松散等病理性状态,以LP 20μg/ml组最为显著;LP（20、10μg/ml）组细胞增殖抑制率显著升高,细胞周期被阻滞于G₂/M期,细胞凋亡率显著升高,caspase-3蛋白表达量显著增高,bcl-2 mRNA表达显著下调、Bax mRNA表达显著上调,Bax/bcl-2表达比值显著升高,上述差异均具有统计学意义（P<0.05,P<0.01）。结论 LP具有抑制卵巢癌SKOV3细胞增殖并促进其凋亡的作用,作用机制可能与LP能够有效提高caspase-3蛋白表达并下调bcl-2 mRNA表达、上调Bax mRNA表达、提高Bax/bcl-2表达比值有关。     

灰树花多糖治疗卵巢癌体外实验观察

目的体外实验探讨灰树花多糖治疗卵巢癌的作用。方法以不同浓度灰树花多糖(终浓度为100、250和500μg/ml)处理人SKOV3细胞,台盼蓝染色和MTT检测对细胞增殖的抑制作用,Annexin V/PI双标记流式细胞术检测与荧光显微镜观察检测细胞凋亡。另设阴性对照组,仅用培养液;10μg/ml顺铂(DDP)作为阳性对照。结果台盼蓝排染和MTT检测证实,灰树花多糖明显抑制SKOV3细胞增殖;Annexin V/PI双染流式细胞术检测显示,灰树花多糖100、250、500μg/ml作用细胞24、48、72 h均能诱导细胞凋亡,凋亡率与时间、剂量存在依赖关系;Annexin V/PI双染荧光显微镜观察检查细胞凋亡率显示了与流式细胞术检测类似结果。结论灰树花多糖显著抑制卵巢癌SKOV3细胞增殖并诱导细胞凋亡。     

连翘乙醇提取物对人胃癌细胞株BGC-823增殖和凋亡的影响

目的:探讨连翘乙醇提取物(EEFF)对人低分化胃腺癌细胞株BGC-823体外增殖和凋亡的影响。方法:四甲基偶氮唑盐(MTT)比色法测不同EEFF浓度(31.25、62.5、125、250、500和1000μg/ml)处理24、48和72 h对BGC-823细胞增殖的抑制率。Annexin V/PI双染色法通过流式细胞仪检测不同浓度EEFF(0、200和400μg/ml)处理24 h及400μg/ml EEFF分别处理24和48 h的BGC-823细胞凋亡率。结果:EEFF作用于BGC-823细胞24、48和72 h的半数抑制浓度(IC50)分别为(566.21±31.76)、(338.91±29.11)和(159.01±17.23)μg/ml,且其作用呈明显的时效和剂量关系。不同浓度EEFF(0、200和400μg/ml)处理24 h的BGC-823细胞凋亡率分别为8.3%、10.4%和16.4%;400μg/ml EEFF分别处理BGC-823细胞24和48 h的细胞凋亡率分别为18.7%和33.3%。结论:EEFF对BGC-823细胞有抑制增殖和促凋亡作用。     

原花青素对人肝癌细胞SMMC-7721的诱导分化作用

目的探讨葡萄籽提取物原花青素（PA）对人肝癌细胞SMMC-7721细胞的诱导分化作用。方法用不同剂量的PA与SMMC27721细胞共同培养,以MTT法检测细胞增殖和PA对细胞增殖的抑制作用;镜下观察细胞形态改变;采用RT-PCR方法检测细胞甲胎蛋白mRNA表达,金氏法检测细胞碱性磷酸酶活性的变化。结果 PA在20～60μg/ml的浓度范围均能抑制细胞增殖,且抑制率随浓度的增加而增高（P〈0.05）,细胞形态和结构向正常肝细胞方向逆转,40μg/ml和60μg/ml的PA均可使细胞甲胎蛋白mRNA表达量明显下降,碱性磷酸酶活性明显升高。结论 PA对人肝癌SMMC27721细胞具有抗增殖和促分化作用。     

花生红衣原花青素通过Wnt/β-catenin信号通路下调survivin表达诱导胰腺癌细胞凋亡

目的 探讨花生红衣原花青素(PSP)通过下调survivin表达诱导胰腺癌细胞凋亡的分子机制。方法 体外常规培养胰腺癌细胞株,配制100、200、300、400、500、600 μg/mL不同质量浓度的PSP,CCK-8法检测并计算不同质量浓度PSP在72 h内对胰腺癌细胞的抑制率,选取IC50=450 μg/mL作为PSP处理组剂量,并设对照组。Western blotting法检测胰腺癌细胞GSK-3β和β-catenin磷酸化程度、survivin、caspase-3和caspase-7蛋白表达水平,RT-PCR法检测胰腺癌细胞survivin mRNA表达水平,Annexin V-FITC/PI法检测24、48、72 h时PSP对胰腺癌细胞凋亡率的影响。 结论 与对照组相比,PSP处理组胰腺癌细胞GSK-3β和β-catenin磷酸化程度于12 h达到最高(P＜0.01)。PSP处理组胰腺癌细胞survivin mRNA的表达量与对照组比较明显降低(P＜0.01)。与对照组比较,在PSP的作用下,胰腺癌细胞中survivin蛋白表达量在72 h时最低(P＜0.01),caspase-3和caspase-7表达量在72 h时最高(P＜0.01),胰腺癌细胞凋亡率随着时间延长越来越高,在72 h时达到51.59%(P＜0.01)。结论 PSP可通过Wnt/β-catenin信号通路下调survivin蛋白表达诱导胰腺癌细胞凋亡。     

葡萄籽原花青素对人卵巢癌耐药细胞COC1/DDP在体外的增殖抑制作用

目的 观察葡萄籽来源的原花青素(grape seed proanthoeyanidin extract,GSPE)对人卵巢癌耐药细胞COC1/DDP在体外的增殖抑制作用,并初步探讨其作用机制.方法 以MTT法检测不同浓度的GSPE(0、20、40、80、160、320μg/ml)不同时间(12、24、36、48、72 h)对COC1/DDP的增殖抑制作用,HE染色观察细胞形态变化,流式细胞仪和TUNEL检测细胞周期和凋亡,Western blot检测细胞内Caspase-3蛋白的表达.结果 GSPE对COC1/DDP具有明显的增殖抑制作用,且呈剂量-时间依赖性,不同浓度GSPE能引起细胞形态明显的凋亡改变.流式细胞术和TUNEL表明GSPE可以诱导细胞凋亡,且随着药物浓度增加,凋亡率升高.Western blot检测显示随着药物浓度增加,Caspase-3蛋白表达增加.结论 原花青素可以在体外抑制人卵巢癌耐药细胞COCl/DDP的增殖并诱导其凋亡,其机制可能与上调Caspase-3蛋白表达有关.     

白英提取物诱导乳腺癌MCF-7细胞凋亡及其对凋亡相关基因表达的影响

目的探讨白英提取物(Solanum lyratum Thunb extract,STE)对乳腺癌MCF-7细胞凋亡及凋亡相关基因survivin和caspase-3表达的影响。方法体外培养MCF-7细胞,以2.5、5、10 mg/L STE处理MCF-7细胞48小时,并以2.5 mg/L顺铂(DDP)作为阳性对照。用MTT法检测细胞抑制率,TUNEL法检测凋亡率,半定量RT-PCR检测survivin和caspase-3 mRNA表达。结果与正常对照组比较,STE各浓度组细胞抑制率显著上升(P<0.001),细胞凋亡率明显升高(P<0.001),caspase-3 mR-NA表达显著上升(P<0.001),survivin mRNA表达明显下降(P<0.05或P<0.01)。结论STE具有诱导MCF-7细胞凋亡作用,其分子机制可能与上调caspase-3及下调survivin基因表达有关。     

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.