脑星形细胞瘤MMP-9表达与微血管密度的关系及其意义

目的:探讨不同类型脑星形细胞瘤组织中基质金属蛋白酶-9(MMP-9)的表达与微血管密度(MVD)的关系及其意义。方法:采用免疫组织化学(EnVision)方法检测50例星形胶质细胞瘤组织中MMP-9和CD34的表达,并通过CD34免疫组化结果测定肿瘤组织中MVD。结果:MMP-9在各型脑星形细胞瘤中均有不同程度的表达;不同组织学类型其阳性表达的强度存在统计学差异(Р<0.01)。Ⅲ～Ⅳ级脑星形细胞瘤组织中MMP-9的阳性表达为(76.52±3.38)%,MVD为(87.00±4.18)/高倍视野(HPF);Ⅰ～Ⅱ级中MMP-9的阳性表达为(27.90±2.53)%,MVD为(48.62±4.05)/HPF。Ⅲ～Ⅳ级中MMP-9和MVD的阳性表达明显高于Ⅰ～Ⅱ级(Р<0.01);脑星形细胞瘤中MVD和MMP-9的表达呈正相关。结论:MMP-9的表达和MVD与脑星形细胞瘤的组织学类型及恶性程度相关,有可能做为判断肿瘤恶性程度及预后的辅助指标。     

脑星形细胞瘤组织MMP-9表达与瘤周水肿及病理分级的关系

目的：探讨星形细胞瘤组织基质金属蛋白酶9(matrix metallopmteinase，MMP-9)表达与瘤周水肿及病理分级的关系。方法：采用免疫组织化学(S—P)法，用抗MMP-9对40例星形细胞瘤组织标本(病理Ⅰ～Ⅱ级22例，Ⅲ～Ⅳ级18例)进行标记分析，并测定MRI图像上肿瘤瘤周水肿范围。结果：星形细胞瘤的瘤周水肿范围越大，其MMP—9的表达也越高；病理分级Ⅲ～Ⅳ级星形细胞瘤组织中MMP-9的表达明显高于Ⅰ～Ⅱ级。结论：星形细胞瘤组织MMP—9与瘤周水肿及恶性程度密切相关。     

脑星形细胞瘤组织中血管内皮生长因子和微血管密度检测

目的:检测脑星形细胞瘤组织中血管内皮细胞生长因子 (VEGF)和微血管密度 (MVD)。方法:脑星形细胞瘤手术切除标本 65例,Ⅰ级 24例,Ⅱ级 18例,Ⅲ ~Ⅳ及 24例; 正常脑组织标本 8例。采用免疫组织化学SABC法检测上述组织中VEGF及MVD。结果:星形细胞瘤VEGF阳性率(63. 1% )及MVD值(46. 70±24. 02)均高于正常组(P<0. 05)。随瘤组织病理分级的升高,VEGF阳性率及MVD均增高 (P<0. 05)。结论:VEGF对肿瘤血管形成起重要作用,检测VEGF的表达对判断脑星形细胞瘤的生物学特性有一定意义。     

人脑星形细胞瘤组织中Survivin与P53的表达

目的:探讨人脑星形细胞瘤组织中Survivin及P53的表达情况.方法:采用免疫组织化学SP法检测65例脑星形细胞瘤(Ⅰ级18例,Ⅱ级20例,Ⅲ～Ⅳ级27例)及10例正常脑组织标本中Survivin、P53的表达并分析2者之间的关系.结果:正常及脑星形细胞瘤组织中Survivin的阳性表达率为0%和49.2%(32/65)(P＜0.01).星形细胞瘤Ⅰ级、Ⅱ级和Ⅲ～Ⅳ级组织中,Survivin阳性表达率分别为11.1%(2/18)、40.0%(8/20)、81.5%(22/27)(P=0.000).正常和脑星形细胞瘤组织中P53阳性表达率为0%和41.5%(27/65)(P＜0.05).星形细胞瘤Ⅰ级、Ⅱ级和Ⅲ～Ⅳ级组织中,P53的阳性表达率为0%、45.0%(9/20)、66.7%(18/27)(P=0.000).星形细胞瘤组织中Survivin与P53表达呈正相关(rs=0.481,P＜0.01).结论:survivin的激活与p53的突变在脑星形细胞瘤的发生发展中可能起协同作用.     

内皮生长因子表达与星形细胞瘤组织学分级的关系

目的探讨血管内皮生长因子(VEGF)与星形细胞瘤的病理恶性程度和微血管密度(MVD)的关系.方法应用免疫组化技术检测48例星形细胞瘤中VEGF蛋白的表达,并用第8因子相关抗原(FVⅢ-RA)抗体标记微血管进行计数.结果 VEGF表达阳性率在低度恶性(Ⅰ、Ⅱ级)和高度恶性(Ⅲ、Ⅳ级)星形细胞瘤中分别为26.09%、64.00%;MVD在低、高度恶性者中分别为8.89±5.80、17.49±13.13.经统计学检验,VEGF阳性率和MVD在不同恶性程度星形细胞瘤中的差异具有显著性(P＜0.01),且VEGF表达与MVD呈正相关.结论 VEGF在星形细胞瘤的形成与恶性进展中发挥着作用,它可促进瘤组织内微血管的形成.     

星形细胞瘤组织TGF-β1、Smad7与VEGF的表达及意义

目的:探讨转化生长因子(TGF-β1)、Smad7、血管内皮生长因子(VEGF)在脑星形细胞瘤中的表达及意义.方法:采用免疫组化法检测正常脑组织、低级别(Ⅰ-Ⅱ级)和高级别(Ⅲ-Ⅳ级)星形细胞瘤组织中TGF-β1、Smad7与VEGF的表达情况.结果:TGF-β1、Smad7及VEGF蛋白在星形细胞瘤中均有不同程度的表...     

人脑胶质瘤血管内皮细胞生长因子的表达及其临床意义

目的　探讨人脑胶质瘤血管内皮细胞生长因子 (VEGF)蛋白和mRNA的表达与微血管密度(MVD)的关系及其临床意义。　方法　 4 5例人脑胶质瘤标本 ,其中星形细胞瘤 (Ⅰ级 )和星形母细胞瘤 (Ⅱ级 )标本 2 5例 ,间变型 (Ⅲ级 )和多形胶母细胞瘤 (Ⅳ级 )标本 2 0例 ,使用LsAB免疫组化方法检测胶质瘤标本的VEGF、内皮细胞相关抗原 (Ⅷ因子 )。使用原位杂交的方法检测VEGFmRNA的表达。　结果　Ⅰ级和Ⅱ级胶质瘤标本VEGF强阳性表达 3例 ,弱阳性表达 2 2例 ,Ⅲ级和Ⅳ级胶质瘤标本VEGF强阳性表达 18例 ,弱阳性表达 2例。Ⅰ级和Ⅱ级胶质瘤标本VEGFmRNA强阳性表达 2例 ,弱阳性表达 2 3例 ,Ⅲ级和Ⅳ级胶质瘤标本VEGFmRNA强阳性表达 17例 ,弱阳性表达 3例。Ⅰ级和Ⅱ级胶质瘤标本MVD平均 ( 7 7± 4 6 )个微血管数 /每平方毫米 ,Ⅲ级和Ⅳ级胶质瘤标本MVD平均 ( 2 3 7± 6 5 )个微血管数 /每平方毫米。Ⅰ级和Ⅱ级胶质瘤与Ⅲ级和Ⅳ级胶质瘤VEGF、VEGFmRNA、MVD之间有非常显著性差异。VEGF和VEGFmRNA与MVD呈正相关。　结论　VEGF与胶质瘤的血管生成密切相关。VEGF是胶质瘤临床和预后的一个有价值的生物学指标     

survivin在人脑星形细胞瘤中的表达及护理意义

目的检测survivin在不同级别人脑星形细胞瘤中的表达结果,分析其参与肿瘤发生的机制。方法观察组包括脑星形细胞瘤Ⅰ级10例,脑星形细胞瘤Ⅱ级22例,脑星形细胞瘤Ⅲ级26例,脑星形细胞瘤Ⅳ级7例。实验方法均采用免疫组化S-P法检测survivin在不同级别的脑星形细胞瘤中表达结果。结果 survivin在星形细胞瘤Ⅰ级、Ⅱ级、Ⅲ级、Ⅳ级中的阳性表达率分别为10.00%、45.45%、65.38%、71.43%,四者之间呈现增高趋势。在高分化组（Ⅰ～Ⅱ级）中呈散在的弱阳性表达,表达率为34.38%（11/32）;而在低分化组（Ⅲ～Ⅳ级）中表达明显增强,表达率为66.67%（22/33）,与高分化组有显著差异（χ2=11.20,P〈0.01）。结论 survivin的阳性表达率随星形细胞瘤,四者之间呈现逐渐增高趋势,说明在脑星形细胞瘤中survivin在肿瘤的形成过程中可能具有一定关键作用。     

脑星形胶质细胞瘤Bcl-2、P16表达的临床病理分析

目的:探讨Bcl-2和P16的表达与脑星形胶质细胞瘤的病理组织学分级的关系.方法应用免疫组织化学技术S-P法检测40例脑星形胶质细胞瘤(Ⅰ-Ⅱ级18例,Ⅲ-Ⅳ级22例)中Bcl-2和P16蛋白的表达.结果 Bcl-2和p16与脑星形胶质细胞瘤的组织学分级呈负相关,低级别组(Ⅰ-Ⅱ级)和高级别组(Ⅲ-Ⅳ级)之间差异有显著性.结论 Bcl-2和P16在脑星形胶质细胞瘤的早期阶段即参与肿瘤的发生发展.     

脑星形胶质细胞瘤p53和p63蛋白的表达与组织分级的关系

目的　探讨脑星形胶质细胞瘤组织 p5 3和 p6 3蛋白的表达及其与星形细胞瘤的病理发生及组织分级的关系。方法　利用免疫组织化学方法检测 5 3例脑星形细胞瘤组织 (Ⅰ级 12例 ,Ⅱ级 15例 ,Ⅲ级 17例 ,Ⅳ级 9例 )及10例手术瘤旁正常脑组织 p5 3、p6 3蛋白表达。 结果　 5 3例脑星形细胞瘤中 2 2例 p5 3蛋白过度表达 ,2 4例p6 3蛋白阳性表达。高病理级别的星形细胞瘤组织 (Ⅲ级和Ⅳ级 ) p5 3蛋白表达率明显高于低病理级别的星形细胞瘤组织(Ⅰ级和Ⅱ级 ) ,而高病理级别的星形细胞瘤组织p6 3蛋白表达率与低病理级别的星形细胞瘤组织相比无显著差异(P >0 .0 5 )。在 2 4例 p6 3蛋白阳性表达的星形细胞瘤中 ,12例呈 p5 3蛋白过度表达。 10例正常脑组织p5 3、p6 3蛋白均呈阴性表达。结论　p5 3蛋白表达异常可能参与脑星形细胞瘤的病理发生 ,与脑星形细胞瘤的病理分级有关 ,p5 3突变与p6 3表达水平无明显相关 ,p6 3表达水平对星形细胞瘤的组织学分级无显著意义     

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.