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。     

虫草素对人骨肉瘤MG-63细胞凋亡的影响及其机制研究

目的 研究虫草素对人骨肉瘤MG-63细胞凋亡的影响及其机制。方法 采用CCK-8实验检测不同浓度虫草素作用于MG-63骨肉瘤细胞24h和48h后对癌细胞增殖的抑制作用;采用流式细胞术分析虫草素对MG-63细胞周期分布及凋亡的影响;采用Western blot法检测虫草素对MG-63细胞凋亡相关蛋白Bax、Bcl-2、cleaved caspase-9、cleaved caspase-3及NICD1、Hes1蛋白表达的影响。结果 虫草素对人骨肉瘤MG-63细胞有明显的增殖抑制作用,导致MG-63细胞周期阻滞于G₀/G₁期并诱导细胞凋亡;虫草素可上调Bax、cleaved caspase-9和cleaved caspase-3蛋白的表达并下调Bcl-2,NICD1和Hes1蛋白的表达。结论 虫草素通过抑制骨肉瘤细胞增殖,诱导细胞周期阻滞于G₀/G₁期并通过线粒体凋亡途径诱导MG-63细胞凋亡从而发挥抗骨肉瘤作用,可能骨肉瘤细胞中Notch信号通路活性下调有关。     

大蒜素对荷子宫内膜癌裸小鼠移植瘤生长的影响及其机制研究

目的 研究大蒜素（allitridi）对荷子宫内膜癌裸小鼠移植瘤生长的影响及其机制。方法 取对数生长期子宫内膜癌Ishikawa细胞,皮下注射接种的方法制备荷子宫内膜癌裸小鼠模型,成瘤后取60只裸小鼠模型随机分为模型组、大蒜素高（40mg/kg）、中（20mg/kg）、低（10mg/kg）剂量组和顺铂2mg/kg组,每组12只;各治疗组均隔天腹腔注射给药1次,共给药治疗5次。治疗完成后剥取肿瘤组织并称量、计算抑瘤率;HE染色法观察肿瘤组织形态学变化;TUNEL染色法观察肿瘤组织细胞凋亡状况并计算凋亡指数（apoptosis index,AI）,免疫组织化学法（immunohistochemistry,IHC）观察肿瘤组织bcl-2、Bax、caspase-3蛋白表达并进行半定量分析,计算Bax/bcl-2比值。结果 大蒜素各组和顺铂组裸小鼠移植瘤肿瘤组织细胞呈皱缩、片状坏死等病理性改变,凋亡细胞数量明显增多,以大蒜素高剂量组最为显著。与模型组比较,大蒜素高、中剂量组和顺铂组瘤体重量显著减轻（P<0.05,P<0.01）,抑瘤率显著升高（P<0.01）,肿瘤组织bcl-2蛋白表达显著下调（P<0.05,P<0.01）,Bax和caspase-3蛋白表达显著上调（P<0.05,P<0.01）,Bax/bcl-2表达比值显著升高（P<0.01）。与顺铂组比较,大蒜素高剂量组Bax/bcl-2表达比值显著升高（P<0.05）。结论 大蒜素对荷子宫内膜癌裸小鼠移植瘤生长具有抑制作用,其机制可能与大蒜素能够下调bcl-2表达、上调Bax和caspase-3表达、提高Bax/bcl-2表达比值进而促进肿瘤细胞凋亡有关。     

不同齿科合金对成纤维细胞增殖凋亡的影响及机制研究

目的 探讨不同齿科合金对成纤维细胞增殖凋亡的影响及机制。方法 小鼠成纤维L929细胞分为阴性对照组、金合金组、镍铬合金组和铜合金组,各组细胞培养48h后,MTT实验检测细胞增殖;流式细胞术检测细胞周期和细胞凋亡率;Western blot法检测Bcl-2、Bax、cleaved caspase-3蛋白表达。结果 金合金组和镍铬合金组细胞增殖率与阴性对照组比较,差异无统计学意义（P>0.05）,铜合金组细胞细胞增殖率显著低于阴性对照组（P<0.01）;金合金组G₁期、S期和G₂期细胞与阴性对照组差异无统计学意义（P>0.05）,镍铬合金组和铜合金组G₁期细胞显著低于阴性对照组,S期和G₂期细胞显著高于阴性对照组（P<0.05）;金合金组细胞凋亡率及Bcl-2、Bax、cleaved caspase-3蛋白表达与阴性对照组差异无统计学意义（P>0.05）,镍铬合金组和铜合金组细胞凋亡率及Bax、cleaved caspase-3蛋白表达均显著高于阴性对照组,Bcl-2蛋白表达显著低于阴性对照组（P<0.01）。结论 金合金组、镍铬合金组和铜合金组对成纤维细胞增殖凋亡均有一定的影响,金合金组的影响最小,不同齿科合金引起成纤维细胞凋亡的机制可能与调控Bcl-2、Bax、cleaved caspase-3蛋白表达有关。     

大蒜素抑制人子宫内膜癌Ishikawa细胞生长的实验研究

目的 研究大蒜素抑制人子宫内膜癌Ishikawa细胞生长的作用,并探讨其可能的作用机制。方法 以不同浓度大蒜素（12.5、25、50μg/ml）和顺铂（40μg/ml）分别干预对数生长期Ishikawa细胞,采用MTT法检测Ishikawa细胞增殖抑制;通过流式细胞术检测细胞周期和细胞凋亡状况,采用Western blot法检测Ishikawa细胞中caspase-3蛋白表达,RT-PCR法检测Ishikawa细胞中Bax mRNA、bcl-2 mRNA表达并计算Bax/bcl-2表达比值。结果 大蒜素能够显著提高子宫内膜癌Ishikawa细胞增殖抑制率、阻滞Ishikawa细胞周期于G₂/M期,提高细胞凋亡率、上调caspase-3蛋白和Bax mRNA表达、下调bcl-2 mRNA表达、提高Bax/bcl-2表达比值,且上述作用均具有一定的剂量依赖性。结论 大蒜素对子宫内膜癌Ishikawa细胞增殖具有抑制作用以及促其凋亡的作用,从而表现出其抑制Ishikawa细胞生长的作用;作用机制可能与大蒜素能够改变Ishikawa细胞周期以及调节凋亡相关基因、蛋白表达有关。     

大蒜素对人舌鳞状细胞癌Tca8113细胞凋亡及细胞周期的影响

[目的]研究大蒜素对人舌鳞状细胞癌Tca8113细胞凋亡以及细胞周期的影响并初探其机制。[方法]取对数生长期Tca8113细胞设空白对照组、大蒜素（50、25、12.5 μg/mL）组和顺铂（40 μg/mL）组,给药48 h后流式细胞术分析细胞周期的改变并检测细胞凋亡状况,逆转录聚合酶链式反应法（RT-PCR）检测B淋巴细胞瘤-2（Bcl-2）mRNA、Bcl-2相关X蛋白（Bax）mRNA表达,蛋白免疫印迹法检测细胞周期相关调控蛋白周期蛋白（cyclin B1、cyclin D1）和周期蛋白依赖性激酶（CDK1、CDK2）表达。[结果]与空白对照组比较,大蒜素（50、25 μg/mL）组细胞周期G₂/M期比例显著提高（P<0.05）,细胞凋亡率显著升高（P<0.01）,Bcl-2 mRNA表达显著下调且Bax mRNA表达显著上调（P<0.05或P<0.01）,Bax/Bcl-2值显著提高（P<0.01）,cyclin B1蛋白和CDK1蛋白显著上调、cyclin D1蛋白和CDK2蛋白显著下调（P<0.05或P<0.01）。[结论]大蒜素具有促进人舌鳞状细胞癌Tca8113细胞凋亡、阻滞细胞有丝分裂的作用,其机制可能与大蒜素影响凋亡相关调控基因及细胞周期相关调控蛋白表达有关。     

丹参多酚酸盐对过氧化氢所致乳鼠心肌细胞凋亡的影响

[目的] 研究丹参多酚酸盐（Salvianolate）对过氧化氢（H₂O₂）所致乳鼠心肌细胞凋亡的影响,并探讨其可能的作用机制。[方法] 于无菌环境下分离并培养乳鼠心肌细胞72 h后随机分为空白对照组、H₂O₂组、丹参多酚酸盐（50、100和200 mg/L）+H₂O₂组,每组设8个复孔;给药干预24 h后,检测培养液中谷草转氨酶（AST）、磷酸肌酸激酶（CPK）、乳酸脱氢酶（LDH）含量,四甲基噻唑蓝（MTT）法检测细胞存活率,通过流氏细胞术（Flow Cytometry）检测细胞凋亡状况并计算凋亡率;逆转录-聚合酶链反应（RT-PCR）法检测AKT mRNA和bcl-2 mRNA、Bax mRNA表达并计算bcl-2/Bax表达比值,Western blotting法检测细胞中半胱氨酸天冬氨酸蛋白酶-3（caspase-3）、核转录因子-κB（NF-κB）表达并进行半定量分析,测定细胞中超氧化物歧化酶（SOD）、过氧化氢酶（CAT）活性和丙二醛（MDA）含量。[结果] 与H₂O₂组比较,丹参多酚酸盐（100、200 mg/L）+H₂O₂组培养液中AST、CPK、LDH含量显著降低,细胞存活率显著升高,细胞凋亡率显著降低。细胞中细胞中AKT mRNA、bcl-2 mRNA表达显著上调,Bax mRNA表达显著下调,bcl-2/Bax表达比值显著升高,caspase-3、NF-κB表达显著下调,SOD、CAT活性显著升高且MDA含量显著降低,上述差异均具有统计学意义（P<0.05或P<0.01）。[结论] 丹参多酚酸盐对H₂O₂所致乳鼠心肌细胞凋亡具有抑制作用。     

银杏内酯B对H2O2诱导H9C2心肌细胞损伤保护作用研究

目的 研究银杏内酯B（ginkgolide B,GB）对H₂O₂诱导H9C2心肌细胞损伤的保护作用及机制。方法 将对数生长期的H9C2心肌细胞随机分为4组：空白对照、H₂O₂（200μmol/L）干预、GB（100μmol/L）+H₂O₂（200μmol/L）干预、GB（200μmol/L）+H₂O₂（200μmol/L）干预,每组设10个复孔。经药物干预16h后观察各组细胞形态,采用MTT法检测细胞存活率;检测培养液中心肌酶（AST、CPK、LDH）活性;测定细胞中抗氧化酶（SOD、GSH-Px、CAT）活性和丙二醛（MDA）含量;酶联免疫法（ELISA）测定培养液中炎性因子（CRP、TNF-α、IL-1、IL-6）含量水平;采用流氏细胞术检测细胞凋亡状况并计算细胞凋亡率,采用反转录PCR（RT-PCR）技术检测细胞中bcl-2 mRNA、Bax mRNA表达并计算bcl-2/Bax表达比值,Western blot法检测细胞中NF-κB蛋白表达并进行半定量分析。结果 与H₂O₂干预组比较,GB（100、200μmol/L）+H₂O₂（200μmol/L）干预组细胞培养液中AST、CPK活性和TNF-α、IL-6、CRP、MDA含量均显著降低,SOD、CAT活性显著升高,细胞凋亡率显著降低;bcl-2 mRNA表达显著上调、Bax mRNA表达显著下调,bcl-2/Bax表达比值显著升高,差异均具有统计学意义（P<0.05,P<0.01）;其中GB（200μmol/L）+H₂O₂（200μmol/L）干预组细胞生存状态明显改善、存活率显著升高,LDH活性、IL-1含量以及NF-κB蛋白表达量显著降低,细胞中GSH-Px活性显著升高,差异均具有统计学意义（P<0.05,P<0.01）。结论 GB对H₂O₂诱导损伤H9C2心肌细胞具有保护作用,作用机制可能与GB能够有效改善抗氧化酶活性、抑制氧化应激损伤,上调抑凋亡基因bcl-2表达、下调促凋亡基因Bax表达,提高bcl-2/Bax表达比值,下调NF-κB蛋白表达,降低炎性因子含量相关。     

miR-370-5p对前列腺癌细胞周期及增殖的影响

目的 研究miR-370-5p导入对前列腺癌细胞株DU-145和LNCaP细胞周期和增殖的影响。方法 合成miR-370-5p（实验组）和dsControl（阴性对照组）,分别转染至两个细胞株。利用Real-time PCR和Western blot法分别检测细胞转染后p21、CDK4、Cyclin D1 mRNA和蛋白的表达变化。流式细胞术分析细胞周期变化,利用MTT法和集落形成实验分析细胞活力和增殖能力。结果 Real-time PCR结果提示,转染miR-370-5p后DU-145和LNCaP细胞中p21 mRNA水平分别上调3.43倍（P<0.01）和3.06倍（P<0.01）,CDK4 mRNA水平分别下调0.51倍（P<0.01）和0.43倍（P<0.01）,Cyclin D1 mRNA水平分别下调0.31倍（P<0.01）和0.35倍（P<0.01）。Western blot法检测结果符合这一趋势。流式细胞术检测结果显示,转染miR-370-5p后,位于S期和G₂/M期的细胞比例下降,位于G₀/G₁期的细胞比例则上升,说明细胞周期被阻滞在G₀/G₁期。MTT分析结果显示,与dsControl组相比,转染miR-370-5p后,DU-145和LNCaP细胞活力明显降低。集落形成实验显示,miR-370-5p组的集落数数量明显较少,细胞增殖能力降低。结论 miR-370-5p能显著激活前列腺癌细胞中p21蛋白的表达,抑制前列腺癌细胞周期的进展和增殖。     

葛根素对重度烧伤大鼠心肌细胞凋亡的影响及其机制研究

目的 观察葛根素（Puerarin）对重度烧伤大鼠心肌细胞凋亡的影响,并探讨其可能的作用机制。方法 取实验用大鼠120只随机分为正常对照组、模型组、葛根素（50、100、200mg/kg）组和地塞米松（5mg/kg）组;除正常对照组外,其余各组大鼠均采用脱毛后于92℃水浴18s的方法制备30% TBSA Ⅲ度烧伤模型大鼠;造模完成后,各组大鼠均立即腹腔注射乳酸林格液（40mg/kg）进行复苏;各治疗组在复苏同时腹腔注射给药进行治疗,正常对照组和模型组分别给予等体积生理盐水。24h后,通过末端标记法（Tunel）检测心肌细胞凋亡状况并计算凋亡指数（AI）,通过免疫组织化学法（IHC）检测心肌组织中bcl-2和Bax蛋白表达并进行半定量分析、计算bcl-2/Bax表达比值,通过Western blot法检测心肌组织中caspase-3、NF-κB蛋白表达并进行半定量分析;测定心肌组织中超氧化物歧化酶（SOD）、谷胱甘肽过氧化物酶（GSH-Px）、髓过氧化物酶（MPO）活性和丙二醛（MDA）含量。结果 与模型组比较,葛根素各组心肌细胞凋亡数量呈不同程度减少,葛根素（100、200mg/kg）组AI显著降低（P<0.05,P<0.01）,心肌组织中bcl-2表达显著上调、Bax表达显著下调,bcl-2/Bax表达比值显著升高（P<0.01）,caspase-3蛋白和NF-κB蛋白表达量显著下调（P<0.05,P<0.01）,心肌组织中SOD、GSH-Px活性显著升高且MDA含量显著降低（P<0.05,P<0.01）,其中葛根素200mg/kg组MPO活性显著升高（P<0.01）。结论 葛根素具有抑制重度烧伤大鼠心肌细胞凋亡的作用,表现出对烧伤大鼠心肌组织较好的保护作用,作用机制可能与葛根素能够调节凋亡相关基因和蛋白表达以及降低氧化应激损伤有关。     

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.