结肠癌中VEGF、NOS的表达及其与微血管形成的关系

目的 :研究血管内皮生长因子 (VEGF) ,Ⅱ型一氧化氮合酶 (iNOS)在结肠癌组织中的表达及其与肿瘤血管形成的关系。方法 :采用免疫组化方法检测 4 0例结肠癌患者手术切除及石蜡包埋标本中VEGF、iNOS的表达 ,并以抗CD34单克隆抗体显示血管内皮细胞 ,根据CD34阳性的血管内皮计数来判定微血管密度 (MVD)。结果 :VEGF在 70 .2 % (2 9/ 4 0 )的结肠癌组织表达 ,iNOS在 82 .5 %(33/ 4 0 )肠癌组织中表达。VEGF阳性的结肠癌组织MVD为 38.2± 1.4 /高倍视野 ,VEGF阴性组织中为 2 2 .1± 2 .2 /高倍视野 ,两者有显著差异 ,(P <0 .0 1)。iNOS阳性肠癌组织MVD为 36 .8± 1.2 /高倍视野 ,iNOS阴性肠癌组织为 30 .2± 2 .4 /高倍视野 ,两者亦有显著差异。 (P <0 .0 1)。结论 :结肠癌组织VEGF、iNOS与MVD形成有密切相关。     

脑胶质瘤中iNOS、VEGF的表达与肿瘤血管形成的相关性和意义

目的探讨一氧化氮合酶 (induciblenitricoxidesynthase,iNOS)和血管内皮生长因子 (vascularendothelialgrowthfactor,VEGF)在脑胶质瘤血管形成中的作用。方法采用免疫组织化学法检测 5 0例不同级别胶质瘤标本中的诱导型iNOS、VEGF和Ⅷ因子相关抗原 (factorⅧrelatedantigen ,FⅧRAg)的表达 ,分析其相互关系。结果①对照组无iNOS表达 ,胶质瘤组iNOS阳性表达率为 4 0 .96 5± 316 ,二者有显著性差异 (P <0 .0 0 1) ;②iNOS阴性组微血管密度为 11.2 0 0± 3.4 91,iNOS阳性组微血管密度为 6 9.792± 5 18,二者间有显著性差异 (P <0 .0 5 ) ;③胶质瘤VEGF阳性表达为 75 .18± 6 .4 76 ,明显高于对照组 (P <0 .0 1) ;④iNOS阳性组中VEGF阳性细胞数明显高于对照组 (P <0 .0 1)。结论FⅧRag的检测能较好地反映脑胶质瘤血管生成活性 ;VEGF和iNOS可能通过相互上调表达促进血管生成 ,对于判断脑胶质瘤的恶性程度有重要意义     

胃癌中微血管密度及VEGF、NOS表达与肿瘤浸润、转移的相关性

目的:研究胃癌组织中微血管密度(MVD)的分布,血管内皮生长因子(VEGF),一氧化氮合酶(NOS)的表达及与肿瘤病理特征间的关系,探讨MVD、VEGF、NOS在胃癌浸润、转移中的意义及其间的相关性。方法:应用免疫组化SP法检测56例手术切除人胃癌组织石蜡包埋标本的VEGFi、NOS、eNOS、nNOS的蛋白表达,对肿瘤微血管以CD34抗体染色并检测MVD。结果:56例胃癌组织MVD值平均为36.25±6.32;VEGFi、NOS、eNOS、nNOS的阳性表达率分别为69.6%、75.0%、80.4%、83.9%;不同浸润深度、淋巴结转移程度及TNM分期的胃癌中MVD值的差异分别有统计学意义(P<0.01);VEGFi、NOS、eNOS、nNOS的表达随胃癌浸润深度的加深,淋巴结转移程度的提高而上调(分别为P<0.05,P<0.01,P<0.01,P<0.01);VEGFi、NOS阳性表达胃癌组织中的MVD值高于阴性表达者(分别为P<0.05,P<0.01);VEGF及iNOS表达均阳性者34例,VEGF表达阳性,iNOS表达阴性者5例,两者表达均阴性8例,iNOS的表达与VEGF表达有关(P<0.01)。结论:随着胃癌浸润,转移程度进展,肿瘤MVD值增高,VEGF、NOS的表达上调;胃癌中VEGF及iNOS的表达与肿瘤MVD有关,提示VEGF及iNOS在胃癌生长,浸润及转移中促进肿瘤新生血管形成;iNOS表达与VEGF表达有关,VEGF可能通过增加iNOS的表达促进肿瘤微血管形成。     

一氧化氮在舌鳞癌血管生成中的作用

【目的】探讨一氧化氮 (NO)在舌鳞癌血管生成中的作用。【方法】原位杂交检测 6 8例舌鳞癌活检组织常规石蜡包埋标本中诱导型一氧化氮合酶 (iNOS)mRNA的表达 ,分别以血管内皮生长因子 (VEGF)多克隆抗体、Ⅷ因子单克隆抗体免疫组化检测上述舌鳞癌标本中VEGF的表达和微血管密度 (MVD)。【结果】①舌鳞癌iNOSmRNA表达阳性组微血管密度显著高于阴性组 (P <0 0 0 1) ;在iNOSmRNA表达阳性组 ,iNOSmRNA阳性表达水平与MVD呈高度显著性正相关 ,r =0 6(P <0 0 0 1)。②舌鳞癌iNOSmRNA表达阳性组VEGF阳性率显著高于阴性组 (P <0 0 5 ) ;iNOSmRNA阳性组中 ,iNOSmRNA阳性表达水平与VEGF阳性表达水平呈显著性正相关 ,r=0 5 (P <0 0 5 )。【结论】iNOSmRNA阳性表达与舌鳞癌血管生成正相关 ,NO在舌鳞癌血管生成中起着重要作用。     

血管内皮生长因子及微血管密度在肝癌中的表达与临床病理意义

为研究血管内皮生长因子 (VEGF)和微血管密度 (MVD)的表达在原发性肝癌中的临床病理意义 ,选择 80例原发性肝癌手术标本 ,采用免疫组织化学染色方法检测VEGF及Ⅷ因子的表达。结果显示 :VEGF在原发性肝癌中的阳性表达率为 62 .5 % ;原发性肝癌中MVD为 3 1.76± 13 .5 6,其中VEGF表达阳性者MVD为 45 .3 8± 14 .85 ,VEGF表达阴性者MVD为 18.87± 8.67.,二者差异有高度显著性 (P <0 .0 1)。VEGF的表达与肿瘤的大小和有无门脉癌栓明显相关 (P<0 .0 1) ,而与肿瘤有无包膜、分化程度、AFP水平、HBsAg阳性无关 (P >0 .0 5 )。提示VEGF能促进肿瘤中微血管的形成 ,与原发性肝癌的生长、浸润和转移有关。     

宫颈癌病变中血管内皮生长因子的变化及意义

目的检测宫颈癌病变组织中血管内皮生长因子(VEGF)的水平,并探讨其表达水平与临床分期的关系。方法应用双抗体酶联免疫吸附法(ELISA)检测正常宫颈(为对照组,10例)和宫颈癌(≤Ⅰb组,20例;≤Ⅱb组,15例)病变组织中VEGF的表达水平。结果正常宫颈组织中VEGF表达水平为(44.23±13.85)ng/L;宫颈癌<Ⅰb组病变组织VEGF水平(75.68±21.32)ng/L,宫颈癌<Ⅱb组病变组织VEGF水平为(65.45±24.83)ng/L,两组比较,差异具有显著性(P<0.01)。病理分化程度为高、中、低分化者的VEGF表达分别为(64.64±24.35)ng/L、(67.93±19.87)ng/L和(73.2±23.57)ng/L,各组间比较,差异均有显著性(P<0.01);有、无淋巴结转移者的VEGF表达水平分别为(78.85±24.32)ng/L和(65.78±24.94)ng/L,两者比较差异有显著性(P<0.05)。结论VEGF在子宫颈癌病变组织中的表达升高,与肿瘤的生长、浸润及转移密切相关,可作为反映子宫颈癌生物学行为的指标之一。     

突变型p53、VEGF在肾细胞癌中的表达及其与血管形成的关系

目的探讨p53、血管内皮生长因子(VEGF)在肾细胞癌组织中的表达及其与肿瘤血管形成的关系.方法利用免疫组织化学S-P法对30例肾细胞癌组织中的p53、血管内皮生长因子的表达及微血管密度(MVD)进行研究.结果 p53、VEGF的表达和微血管密度计数均与肾细胞癌组织学分级呈正相关(P<0.05);p53和VEGF的总阳性表达率分别为53.3%(16/30)和56.7%(17/30);p53阳性或VEGF阳性组MVD(64.0±15.9;63.4±15.2)均显著高于p53阴性或VEGF阴性组(40.6±11.9;39.6±12.5;P<0.01),p53、VEGF均为阳性时,MVD值最大(67.2±14.6,P<0.01);MVD计数与VEGF表达明显相关(P<0.01);p53表达与VEGF的表达显著相关(P<0.01).结论 p53、VEGF的表达及MVD计数可作为判定肾细胞癌恶性程度的重要生物学指标;p53、VEGF的表达对肿瘤血管形成起重要作用,p53可能通过p53-VEGF调节旁路途径促进肾细胞癌的肿瘤血管形成.     

KiSS-1和VEGF在涎腺黏液表皮样癌中的表达及其对血管生成的影响

目的 研究肿瘤转移抑制基因KiSS-1和血管内皮生长因子(VEGF)在涎腺黏液表皮样癌(MEC)组织中的表达情况及其对血管生成的影响.方法 选择河北北方学院附属第一医院口腔科2007年6月至2016年6月收治的68例MEC患者为研究对象.应用免疫组织化学SP法检测68例MEC组织、20例正常涎腺组织中KiSS-1和VEGF的表达,统计学比较其在不同临床病理特征的MEC组织中表达阳性率的差异.光镜下计数利用CD105标记的微血管密度(MVD),统计学比较不同临床病理特征的MEC组织MVD值的差异,并观察KiSS-1和VEGF的表达对MEC组织MVD值的影响.结果 68例MEC组织中KiSS-1的阳性表达率为38.24%,明显低于正常涎腺组织的70.00%,VEGF的阳性表达率为70.59%,明显高于正常涎腺组织的10.00%,差异均有统计学意义(P<0.05).KiSS-1的表达与MEC的淋巴结转移和TNM分期相关(P<0.05),VEGF的表达与MEC的病理分级、淋巴结转移和TNM分期相关(P<0.05);KiSS-1阳性组MVD值为(29.50±9.14),明显低于阴性组的(35.24±10.45),VEGF阳性组MVD值为(35.33±10.20),明显高于阴性组的(27.57±8.45),差异均有显著统计学意义(P<0.01);KiSS-1的表达与VEGF表达呈负相关(rs=-0.488,P=0.000).结论 在MEC组织中KiSS-1表达的下调可能促进VEGF的表达,从而促进了MEC组织血管的生成,促进其侵袭和转移.     

口腔癌中诱导型一氧化氮合酶表达与微血管密度的关系

目的 :研究口腔癌组织中诱导型一氧化氮合酶 ( i NO S)表达与口腔癌组织微血管密度 ( M VD)、淋巴结转移的关系。方法 :采用免疫组化 SP法检测 4 1例口腔癌石蜡切片中 i NO S的表达 (以 9例正常口腔粘膜作对照 )和MVD(选用 CD34标记 )。结果 :口腔癌细胞 i N OS阳性表达的病例 2 6例 ,占 6 3.4 1% ,其中淋巴结阴性组 i NO S阳性率为 4 2 .90 % ,阳性组 i N OS阳性率为 85.0 0 % ,差异有显著性 ( P<0 .0 1) ,9例正常口腔粘膜 i NOS表达均为阴性 ;口腔癌 MV D和淋巴结转移呈正相关 ( rs=0 .51,P <0 .0 1) ;在 i N OS表达 ( - )～ ( +++)各组中 MV D值分别为 2 9.6 6 7± 6 .94 5、34 .833± 4 .579、4 6 .357± 6 .6 87、54 .16 7± 5.56 5,组间差异有显著性 ( P<0 .0 0 1)。结论 :口腔癌细胞存在 i N OS高表达 ,其表达水平与区域淋巴转移有关 ;口腔癌组织 MV D与区域淋巴转移密切相关 ;口腔癌细胞 i NO S表达水平与肿瘤 MV D有关。     

血管内皮生长因子和微血管密度在涎腺腺样囊性癌中的表达及意义

目的:研究血管内皮生长因子和微血管密度在涎腺腺样囊性癌的表达及其与侵袭、转移等生物学行为的关系。方法:采用SP免疫组织化学染色的方法对40例涎腺腺样囊性癌组织中MVD和VEGF进行检测。结果:肿瘤组织中VEGF阳性表达率70％(28/40),MVD均值为(51.2±6.6),显著高于正常涎腺组织(P<0.05);VEGF高表达组的平均MVD值明显高于低表达组的平均MVD值(P相似文献   

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.     

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.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.     

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.