良性前列腺增生组织中VEGF Flt-1表达及与微血管密度计数相关性研究

目的 探讨良性前列腺增生组织中VEGF、Flt-1表达和MVD计数的相关性.方法 采用免疫组织化学S-P法,检测37例良性前列腺增生组织VEGF、Flt-1表达和MVD计数,进行等级相关性分析.结果 VEGF表达与MVD计数呈正相关(P＜0.05),VEGF与Flt-1表达呈正相关(P＜0.05),Flt-1表达与MVD计数无相关性(P＞0.05);前列腺体积与VEGF、Flt-1表达和MVD计数均无相关性(P＞0.05).结论 在前列腺增生过程中VEGF与Flt-1表达呈正相关,与MVD也呈正相关.     

良性前列腺增生组织中VEGF和Flt-1表达及MVD计数的对比研究

目的探讨良性前列腺增生组织血管内皮细胞生长因子(VEGF)、及其受体-1(Flt-1)表达和微血管密度(MVD)计数的意义。方法采用免疫组织化学S-P法,检测37例良性前列腺增生和6例正常前列腺组织VEGF、Flt-1表达和MVD计数。结果良性前列腺增生组织VEGF阳性表达78.4%,6例正常前列腺组织VEGF为阴性表达,两者差异有统计学意义(P<0.05)。良性前列腺增生和正常前列腺组织中Flt-1表达均为阳性,两者差异无统计学意义(P>0.05)。良性前列腺增生组织MVD值为8.00±3.28,正常前列腺组织MVD值为4.83±1.83,两者差异有统计学意义(P<0.05)。结论在前列腺增生过程中,VEGF表达和血管生成明显加强,VEGF在良性前列腺增生发病和发展过程中发挥着重要作用,而Flt-1的作用并不重要。     

非那雄胺对良性前列腺增生组织中VEGF和Fit-1表达及MVD计数的影响

目的：探讨非那雄胺对良性前列腺增生组织VEGF、Fit-1表达和MVD计数的影响。方法：将前列腺增生患者按术前是否服用非那雄胺分为服药组和对照组，采用免疫组织化学S-P法，检测前列腺组织VEGF、Fit-1表达和MVD计数。结果：服药组VEGF阳性表达率为68．4％；对照组VEGF阳性表达率为57％，两组有显著性差异（p〈0．05）。服药组与对照组Flt-1表达全部为阳性。服药组MVD值为6．89±2．54；对照组MVD值为9．17±3．63，两组有显著性差异（p〈0．05）。结论：服用非那雄胺后可减少前列腺增生组织VEGF的合成、抑制微血管的形成，而对Flt-1无明显影响。     

非那雄胺对良性前列腺增生组织中VEGF和Flt-1表达及MVD计数的影响

目的:探讨非那雄胺对良性前列腺增生组织VEGF、Flt-1表达和MVD计数的影响.方法:将前列腺增生患者按术前是否服用非那雄胺分为服药组和对照组,采用免疫组织化学S-P法,检测前列腺组织VEGF、Flt-1表达和MVD计数.结果:服药组VEGF阳性表达率为68.4%;对照组VEGF阳性表达率为57%,两组有显著性差异(p＜0.05).服药组与对照组Flt-1表达全部为阳性.服药组MVD值为6.89 2.54;对照组MVD值为9.17 3.63,两组有显著性差异(p＜0.05).结论:服用非那雄胺后可减少前列腺增生组织VEGF的合成、抑制微血管的形成,而对Flt-1无明显影响.     

血管内皮生长因子及其受体Flt-1、KDR在胃癌组织中的表达及意义

目的探讨胃癌组织中血管内皮生长因子(VEGF)及其受体1(Flt-1)、受体2(KDR)表达和微血管密度(MVD)的意义。方法采用免疫组织化学方法检测208例胃癌组织和139例胃正常黏膜组织VEGF、Flt-1、KDR表达和计数MVD。结果胃癌组织中VEGF及其受体Flt-1、KDR的表达明显高于胃正常黏膜组织(P<0.01);胃癌组MVD比胃正常黏膜组度高[(26.19±16.23)/mm2vs(16.02±09.88)个/mm2,P<0.01]。VEGF、Flt-1、KDR表达与肿瘤浸润深度、淋巴转移密切相关(P<0.05)。在VEGF高表达的区域,Flt-1和KDR的表达亦增强,三者呈正相关(P<0.05)。VEGF表达水平与MVD之间也有正相关性(P<0.05)。结论VEGF及其受体Flt-1、KDR在胃癌中广泛表达,与胃癌患者的病理特征和微血管生成关系密切。胃癌组织中VEGF的表达与受体Flt-1、KDR的表达呈正相关;这些结果提示VEGF、Flt-1、KDR在肿瘤组织的血管生成和侵袭转移中可能起重要作用。     

血管内皮生长因子在人食管癌中的表达和临床意义

目的 :研究血管内皮生长因子 (VEGF)在人食管癌中的表达及其临床意义。方法 :对 72例食管鳞癌患者手术切除标本 ,10例正常食管组织 ,应用免疫组织化学技术 ,抗VEGF单克隆抗体检测VEGF的表达 ,抗CD34单克隆抗体测定组织微血管密度 (MVD)。结果 :VEGF在 4 0例 (5 5 .6 % )食管鳞癌中阳性表达 ,而正常食管组织不表达 ;食管鳞癌组织MVD为 6 7.5± 2 7.6 ,正常食管组织MVD为 2 9.9± 9.4 ,两者之间有显著性差异 (P <0 .0 1) ;VEGF评分为高级的食管鳞癌组织MVD高于VEGF评分为阴性和低级的食管鳞癌组织(P <0 .0 1) ,MVD与VEGF的表达呈正相关 (P <0 .0 1) ;VEGF的表达和MVD值在淋巴结转移组显著高于无淋巴结转移组 (P <0 .0 1)。结论 :VEGF在食管鳞癌组织表达且与肿瘤血管形成有关 ;VEGF的表达和MVD与食管鳞癌的淋巴结转移密切相关 ,可作为术前治疗方案的选择和确定手术范围的重要指导因子     

子痫前期患者胎盘组织中Endoglin、血管内皮生长因子及其跨膜型受体的表达

目的:检测子痫前期患者胎盘组织中Endoglin、血管内皮生长因子(VEGF)及其跨膜型受体(Flt-1)的表达.方法:采用免疫组织化学SP法检测45例子痫前期患者(轻度子痫前期患者15例、重度30例)及同期足月妊娠分娩孕妇20例胎盘组织中Endoglin、VEGF及Fit-1的表达.结果:对照组、轻度和重度子痫前期组胎盘组织中Endoglin的相对表达量分别为(86.88 ± 6.80)、(99.45±6.88)和(118.88±6.13,3者相比,差异有统计学意义(F=69.683,P<0.001);VEGF的相对表达量分别为(133.70±6.08)、(117.57±6.44)和(104.60±4.98),3者相比,差异有统计学意义(F=68.877,P<0.001);Fit-1的相对表达量分别为(129.00±5.76)、(142.30±4.55)和(154.32±5.16),3者相比,差异有统计学意义(F=66.555,P<0.001);随着病情的加重,胎盘组织Endoglin与Flt-1蛋白的表达水平升高,VEGF的表达水平降低(P<0.05).子痫前期患者胎盘组织中VEGF的表达与Flt-1的表达呈负相关(r=-0.653,P=0.001).结论:子痫前期患者胎盘组织中Endoglin与Flt-1的高表达及VEGF的低表达可能参与了子痫前期的发病.     

非黑色素性皮肤癌组织中血管内皮生长因子及其受体1和受体2的表达

目的:检测皮肤鳞状细胞癌(SCC)和基底细胞癌(BCC)组织中血管内皮生长因子(VEGF)及其受体1(Flt-1)、受体2(KDR)的表达。方法:应用免疫组化SP法检测26例皮肤SCC、18例BCC组织中VEGF、Flt-1和KDR的表达。取10例正常皮肤组织标本作对照。结果:皮肤SCC、BCC和正常皮肤组织中VEGF的表达水平分别为(129.05±9.93)、(119.40±9.37)及(85.25±12.98),Flt-1的表达水平分别为(130.48±12.02)、(116.90±13.45)及(82.19±9.15),KDR的表达水平分别为(136.60±6.67)、(120.95±6.33)和(85.43±9.33),3组间VEGF、Flt-1和KDR蛋白的表达差异均有统计学意义(F分别为83.418、78.137和169.125,P均<0.001)。皮肤SCC组织中VEGF与Flt-1(r=0.773,P<0.001)、VEGF与KDR(r=0.676,P<0.001)、Flt-1与KDR(r=0.718,P<0.001)的表达均呈正相关。结论:VEGF及其受体的过表达可能与非黑色素性皮肤癌的发生有关。     

上皮性卵巢肿瘤组织中VEGF及其受体的表达

研究血管内皮生长因子(VEGF)及其受体在卵巢癌组织中的表达及临床意义。方法 应用免疫组化SABC法,检测33例上皮性卵巢癌、10例良性卵巢肿瘤、10例正常卵巢组织中VEGF及其受体VEGFR-1、VEGFR-2的表达,用Ⅷ因子单抗标记肿瘤新生血管内皮,计数微血管密度(MVD)。结果VEGF及其受体VEGFR-1、VEGFR-2的表达在卵巢癌组织中显著高于良性及正常卵巢组织(P<0.05),且与卵巢癌患者临床分期、淋巴结转移、腹水癌细胞阳性、盆腔内形成粘连、MVD有明显相关性(P<0.05)。结论VEGF及其受体是卵巢癌重要的血管生成调节系统,与卵巢癌发生、发展密切相关,以VEGF及其受体为靶点的抗血管生成疗法对卵巢癌是可行的。     

血管内皮生长因子及其受体在急性髓性白血病中的表达

目的 :探讨骨髓中血管生成在急性髓性白血病的发病及预后的作用。方法 :应用免疫组化的方法检测 2 8例初治的急性髓性白血病 (AML)患者的骨髓活检标本治疗前后血管内皮生长因子 (VEGF)及其受体Flt 1、KDR、微血管密度 (MVD)的变化 ,并与对照组进行比较。结果 :初治AML患者骨髓病理组织中KDR、VEGF和MVD的表达高于对照组 (P <0 .0 5 ) ,内皮细胞出芽现象广泛存在 ,生成的微血管无明显血管管腔形成 ,而正常骨髓组织的微血管管腔大而直 ;VEGF及KDR与MVD呈正相关 ;化疗后完全缓解组骨髓组织的VEGF、KDR阳性率及MVD明显下降 (P<0 .0 5 ) ,治疗后未完全缓解组的VEGF、KDR阳性率及MVD与治疗前无显著性下降 (P >0 .0 5 ) ;Kaplan Meier分析显示治疗前VEGF阳性组的生存时间大于VEGF阴性组 (P <0 .0 5 ) ,但治疗前KDR、MVD的表达情况与生存时间无相关性。结论 :AML骨髓组织中存在血管生成 ,VEGF KDR信号传导通路在急性白血病血管新生中起主要作用 ,VEGF的表达与AML的预后有关     

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.