KCC1基因在IGF-Ⅰ调控子宫内膜癌HEC-1B细胞增殖中作用的研究

目的 探讨胰岛素样生长因子(IGF-Ⅰ)对子宫内膜癌HEC-1B细胞增殖能力的影响,以及KCC1基因在IGF-Ⅰ调控子宫内膜癌HEC-1B细胞增殖中的作用.方法 应用IGF-Ⅰ处理子宫内膜癌HEC-1B细胞,RT-PCR检测HEC-1B细胞中KCC1基因的表达,MTT比色法和流式细胞术检测HEC-1B细胞增殖能力和细胞周期的改变.设计并合成KCC1基因特异性的siRNA,转染HEC-1B细胞,检测RNA干扰后HEC-1B细胞的增殖能力及细胞周期的变化.结果 IGF-Ⅰ能够明显增加HEC-1B细胞中KCC1基因的表达,而且能够促进细胞增殖分裂.KCC1基因特异性的siRNA能够明显抑制HEC-1B细胞中KCC1基因的表达(P<0.05).KCC1表达下调的HEC-1B细胞的增殖能力出现明显下降(P<0.05),细胞周期分析显示实验组细胞明显阻滞于G0/G1期(P<0.05).结论 IGF-Ⅰ能够促进子宫内膜癌HEC-1B细胞的增殖,KCC1基因参与了该调控过程,抑制KCC1基因的表达能够抑制子宫内膜癌细胞的增殖能力.     

蛋白酶体抑制剂MG132对人子宫内膜癌HEC-1B和Ishikawa细胞增殖、凋亡和周期的影响

【摘要】 目的 了解蛋白酶体抑制剂三肽基乙醛（Z-Leu-Leu-Leu-cho, MG132）抗人子宫内膜癌HEC-1B和Ishikawa细胞的活性,研究MG132治疗人子宫内膜癌的潜在应用价值。方法 用不同浓度的MG132(0,0.2,0.5,1.0 μmol/L)处理HEC-1B和Ishikawa细胞24 h、48 h,采用MTT法检测MG132对HEC-1B和Ishikawa细胞增殖的影响;应用流式细胞术分别检测0.5 μmol/L MG132处理24 h后两种细胞的凋亡率和细胞周期分布。结果 MG132能抑制HEC-1B和Ishikawa细胞增殖,在本研究浓度范围内MG132浓度增高对两种细胞的抑制作用增强（P<0.01）,48 h抑制作用强于24 h(P<0.01),Ishikawa细胞对MG132的敏感程度大于HEC-1B细胞。MG132处理HEC-1B和Ishikawa细胞后凋亡率均增加（P=0.000）,细胞周期分析显示HEC-1B细胞G2期细胞比例增加（P<0.05）,Ishikawa细胞G1和G2细胞比例增加（P<0.05）。结论 蛋白酶体抑制剂MG132对HEC-1B和Ishikawa细胞有增殖抑制、诱导凋亡和阻滞细胞周期的作用。MG132可能成为潜在的子宫内膜癌化疗药物。     

Kayadiol对子宫内膜癌细胞株HEC-1的影响

目的探讨二萜类化合物kayadiol抑制子宫内膜癌细胞HEC-1增殖作用的机制。方法采用四甲基偶氮唑盐(MTT)法检测kayadiol对子宫内膜癌HEC-1细胞增殖的抑制作用;采用DNA断裂原位末端标记(TUNEL)法和Western blot法检测kayadiol诱导子宫内膜癌HEC-1细胞凋亡。结果 kayadiol对HEC-1细胞增殖显示较强的抑制活性,呈量效关系;其中以10μmol/L的kayadiol处理HEC-1细胞后,发现凋亡率变化与时间呈依赖关系,HEC-1细胞内的Bax和半胱氨酸天冬氨酸蛋白酶-3(Caspase-3)蛋白表达显著上调。结论 Kayadiol可通过诱导细胞凋亡抑制HEC-1细胞增殖。     

复方苦参注射液对子宫内膜癌HEC-1B细胞Bcl-2/Bax、P27表达的影响

[目的]探讨复方苦参注射液（岩舒）对人子宫内膜癌HEC-1B细胞Bcl-2/Bax、P27基因表达的影响。[方法]采用四甲基偶氮唑蓝（MTT）法观察不同浓度复方苦参注射液及组方成分苦参注射液,白土苓注射液,顺铂注射液对人子宫内膜癌HEC-1B细胞增殖的影响;采用逆转录聚合酶链反应法（RT-PCR）检测复方苦参注射液对人子宫内膜癌HEC-1B细胞中Bcl-2/Bax、P27 mRNA表达水平的影响。[结果]复方苦参注射液、苦参注射液均可抑制HEC-1B细胞增殖,并呈剂量依赖性,组间差异有统计学意义（P〈0.05）;复方苦参注射液、苦参注射液、顺铂注射液作用于HEC-1B细胞48 h后,与空白对照组相比在mRNA表达水平Bcl-2降低,而Bax、P27表达升高,差异有统计学意义（P〈0.05）。[结论]复方苦参注射液、苦参注射液可抑制人子宫内膜癌HEC-1B细胞增殖;复方苦参注射液及苦参注射液可明显抑制Bcl-2表达并促进Bax、P27表达,说明复方苦参注射液抑制子宫内膜癌HEC-1B细胞增殖的作用机制在于苦参对Bcl-2/Bax基因家族和P27基因的表达的影响。     

染料木黄酮抑制子宫内膜癌细胞HEC-1B增殖作用的研究

目的 研究染料木黄酮（Genistein,GST）对人子宫内膜癌细胞株HEC-1B的作用。方法 应用MTT法测定染料木黄酮对HEC-1B的生长抑制率,流式细胞术检测是否发生细胞凋亡。结果 染料木黄酮能够明显抑制人子宫内膜癌细胞株HEC-1B细胞增殖,其作用随时间的延长和剂量的增加而增强,并引起HEC-1B的凋亡。结论 染料木黄酮抑制HEC-1B的增殖,诱导凋亡。     

曲古霉素A对人子宫内膜癌HEC-1B细胞增殖和凋亡的作用及相关机制

【目的】探讨组蛋白去乙酰化酶抑制剂曲古霉素A(trichostatin A,TSA)对人子宫内膜癌HEC-1B细胞增殖和凋亡的作用及其可能机制。【方法】应用不同浓度的TSA处理子宫内膜癌HEC-1B细胞72 h,Western blotting法检测细胞内组蛋白H4乙酰化水平及p21蛋白,荧光定量PCR方法检测p21基因mRNA表达,MTT法检测细胞增殖,流式细胞术检测细胞凋亡率。【结果】经TSA作用后,人子宫内膜癌HEC-1B细胞内组蛋白H4乙酰化水平增加,p21基因mRNA及蛋白表达增加;同时细胞生长受到抑制,细胞凋亡增加。【结论】TSA通过提高组蛋白乙酰化水平,增加p21基因表达,抑制子宫内膜癌HEC-1B细胞的增殖和诱导细胞凋亡。     

二甲双胍在体外对人子宫内膜癌细胞增殖的影响

目的流行病学研究表明二甲双胍可以降低糖尿病患者患癌的风险性和癌症相关的死亡率,本实验进一步探讨二甲双胍在体外对人子宫内膜癌细胞增殖的影响及其可能的作用机制。方法二甲双胍干预人子宫内膜癌Ishikawa和HEC-1A细胞不同时间后,采用MTT法检测其对细胞增殖的影响,流式细胞术检测细胞周期和凋亡,Western blotting法检测ERα及PTEN的表达。结果二甲双胍显著抑制两种子宫内膜癌Ishikawa和HEC-1A细胞的增殖。流式细胞术检测显示二甲双胍使子宫内膜癌细胞停滞在G0/G1期,并且可以诱导细胞的凋亡。Western blotting法检测显示二甲双胍能够促进子宫内膜癌细胞ERα的表达;Ishikawa细胞无PTEN蛋白的表达,HEC-1A细胞则高表达PTEN。结论二甲双胍能抑制子宫内膜癌细胞的生长,其作用机制可能与促进ERα的表达有关。     

二烯丙基二硫化物对人子宫内膜癌HEC-1-B细胞增殖抑制和凋亡诱导作用

目的研究二烯丙基二硫化物(DADS)对人子宫内膜癌HEC-1-B细胞增殖和凋亡的影响。方法 MTT法检测DADS对HEC-1-B细胞的增殖抑制作用,采用AnnexinV/PI双标记流式细胞术检测DADS对HEC-1-B细胞的凋亡诱导作用;Hoechst-33528染色,观察细胞凋亡形态。结果用100、200、400μmol/L DADS处理HEC-1-B细胞24、48 h,在100μmol/L剂量即可抑制细胞的增殖,随着剂量和时间的增加,DADS对细胞的抑制作用明显增强。DADS对HEC-1-B细胞的增殖抑制存在时间-剂量依赖关系。用200μmol/LDADS处理48 h后,流式细胞术检测细胞凋亡率达40.91%。Hoechst-33528染色可见细胞出现明显的凋亡形态学改变。结论 DADS对HEC-1-B细胞具有增殖抑制并诱导凋亡的作用,提示DADS对子宫内膜癌的治疗可能具有重要价值。     

全反式维甲酸对子宫内膜癌细胞增殖影响的实验研究

目的 通过观察全反式维甲酸(ATRA)、肝细胞生长因子(HGF)对子宫内膜癌细胞HEC-2B增殖的影响及检测子宫内膜癌细胞HEC-2B中HGF受体c-met的表达,了解ATRA对子宫内膜癌细胞的作用及其可能机制.方法 体外培养人子宫内膜癌细胞HEC-2B,用60 ng·ml-1HGF及10-5、10-6、10-7、10-8mol·L-1的ATRA作用于HEC-2B,用四甲基偶氮唑盐微量酶反应比色法分析细胞的增殖力,实时定量PCR检测ATRA作用前后细胞中HGF受体c-met的表达.结果 单独使用ATRA(10-6mol·L-1)处理HEC-2B,并不能够影响细胞的增殖能力.如果与具有明显促细胞增殖作用的60 ng·ml-1HGF共处理,10-7mol·L-1的ATRA即能够明显抑制前者的促增殖作用(P<0.01),而且表现出一定的量效关系.ATRA能够有效抑制HEC-2B细胞中c-met的转录水平,10-7mol·L-1的ATRA即有明显作用(P<0.01),10-6mol·L-1的作用最为显著(P<0.01),呈现一定的量效关系.经ATRA处理0.5 h后,c-met的转录水平即开始下降,随着处理时间的延长,ATRA的抑制作用趋于明显(P<0.01),有明显的时间依赖性.结论 通过抑制c-met的表达调控细胞的增殖可能是ATRA对子宫内膜癌细胞作用的通路之一.     

曲古菌素A对去乙酰化酶2在子宫内膜癌细胞株HEC-1B中表达的影响

目的研究曲古菌素A（TSA）对子宫内膜癌细胞株HEC-1B中去乙酰化酶2（HDAC2）和p53表达的影响,及TSA对HEC-1B增殖的抑制作用,探讨TSA诱导HEC-1B细胞增殖抑制的机制。方法用不同浓度的TSA（100、200、400nmol／L）分组培养HEC-1B细胞（0、24、48、72h）,用四甲基偶氮唑蓝（MTT）法测定不同浓度、不同时间的TSA作用后子宫内膜癌HEC-1B细胞的增殖率。应用Western Blot以及RT-PCR方法检测HDAC2和p53的表达水平,研究TSA对其表达的影响。结果TSA对HEC-IB细胞的增殖具有明显的抑制作用,并呈时间依赖性（P〈0．01）。HDAC2在该细胞中的表达随TSA的剂量和时间呈减弱趋势,而p53的表达呈升高趋势。结论TSA具有去乙酰化酶抑制剂作用,抑制HDAC2的表达并促进肿瘤抑制因子p53的活化与表达,能够抑制子宫内膜癌细胞的增殖。     

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.