血管内皮生长因子-C表达、微血管及淋巴管密度与原发性肝细胞癌临床病理特征的关系

原发性肝细胞癌是常见的恶性肿瘤.肝癌的发生、发展、浸润、转移与其脉管系统(包括微血管、微淋巴管)密切相关[1].     

肝癌化疗栓塞术后残癌组织微血管密度及血管内皮细胞生长因子表达的研究

目的 研究肝癌经导管动脉内化疗栓塞(transcatheter arterial chemoembolization,TACE)术后残癌组织微血管密度(microvessel density,MVD)、血管内皮细胞生长因子(vascular endothelial growth factor,VEGF)和成纤维细胞生长因子(basic fibroblast growth factor,BFGF)的表达变化。方法 对40例原发性肝癌患者的手术切除标本作免疫组织化学染色,检测肿瘤组织的MVD和肿瘤细胞VEGF、BFGF的表达。40例患者中20例术前接受l~7次不等的TACE治疗(TACE组),另20例为直接手术患者,术前未进行任何其它治疗(直接手术组)。结果TACE组平均MVD为130.51±75.5,直接手术组为152.35±58.80,两组差异无显著性(t=－1.021．P=0.341)。VEGF平均染色强度TACE组为645.60±543.27,直接手术组为158.28±188.48,前者强于后者(t=281,P＜0.001)。BFGF阳性率TACE组和直接手术组分别为35%和40%,差别无显著性(x~2=0.107,P=0.744)。结论TACE术后残癌组织只有丰富的肿瘤血供,残存肿瘤细胞VEGF表达增强,可能在TACE术后肿瘤血供的重建中起重要作用。     

VEGF的表达及其微血管密度在胃癌组织中的意义

目的:探讨血管内皮生长因子(VEGF)、CD34的表达与人胃癌多种临床病理因素的关系,分析其在患者预后中的意义.方法:通过免疫组织化学方法回顾性检测169例不同分级分期胃癌组织VEGF的表达.用CD34免疫染色法计数肿瘤微血管密度(MVD),分析VEGF、MVD和胃癌的临床病理因素之间的相关性;并就169例胃癌患者的预后及其相关因素进行统计分析.结果:VEGF的阳性表达率为50.3%.VEGF和CD34为正相关(P=0.0053).VEGF的表达与肿瘤侵袭深度,淋巴结转移,静脉侵犯及TNM分期有关,MVD与原发肿瘤侵犯深度、淋巴结转移、肿瘤大小、静脉侵犯显著相关.VEGF阳性表达者5年无病生存率和总生存率较低(38.8% vs 57.1%,P＜0.05;35.3% vs 54.8%.P＜0.01);MVD积分高者5年无病生存率和总生存率也较低(35.3% vs 53.9%,23.5% vs 49.3%.均P＜0.05).结论:VEGF表达与血管生成和肿瘤演进相关,VEGF、MVD及肿瘤部位对胃癌患者是一个有价值的预后因素.     

Prognostic significance of vascular endothelial growth factor expression in gastric carcinoma: a meta-analysis

Purpose  

The purpose of this study was to comprehensively and quantitatively summarize available evidences for the use of VEGF protein to evaluate the clinicopathological and prognostic role of VEGF expression in Asian patients with gastric cancer.     

血管内皮生长因子和微血管密度在胰腺癌与壶腹部癌中的对比研究

目的 分析血管内皮生长因子(vascular endothelial growth factor, VEGF)和微血管密度(microvessel density, MVD)在胰腺癌和壶腹癌中的表达,探讨血管生成两种肿瘤发展过程中的差别及意义.方法 选取43例胰腺癌和45例壶腹部癌标本,应用免疫组化方法检测VEGF表达和MVD计数.结果 胰腺癌和壶腹部癌在患者性别、年龄、血液肿瘤标志物和肿瘤分化程度等方法无明显差别,但在首发症状、手术方式、术后并发症、肿块大小、病理类型、有无淋巴结转移、TNM分期、治疗结果及生存期等方面吸显著性差异(P＜0.05).胰腺癌VEGF表达阳性率为76.7%,壶腹部癌为73.3%,两者之间无显著性差异(P＞0.05).结论胰腺癌的恶性程度远高于壶腹部癌,胰腺癌的高血管生成活性可能是其原因之一.     

Prognostic significance of expression of cyclooxygenase-2 and vascular endothelial growth factor in human gastric carcinoma

AIM: To investigate the role of cyclooxygenase-2(COX-2) and vascular endothelial growth factor (VEGF) in the development of gastric carcinoma and correlation between expression of COX-2 and VEGF and clinicopathologic features in tissues from patients with gastric carcinoma. METHODS: 281 patients with gastric carcinoma who underwent surgical resection between 1990 and 1999 at the First Affiliated Hospital, Anhui Medical University, PRC, were followed up. Expression of COX-2 and VEGF was investigated retrospectively in 232 gastric carcinoma tissues and 60 noncancerous specimens by using immunohistochemistry. RESULTS: The 5-year survival rates of early gastric carcinoma (EGC) and advanced gastric carcinoma (AGC) were 93.4 % and 59.0 %, respectively. Survival time was highly correlated with lymph node metastasis, vascular invasion, depth of invasion and treatment with chemotherapy. Compared with paired noncancerous tissues, expression of COX-2 and VEGF and microvessel density (MVD) value in carcinoma tissue were significantly higher. The MVD value was much higher in COX-2-positive group and VEGF-positive group than that in COX-2-negative group and VEGF-negative group. Expression of COX-2 and VEGF, as well as MVD value were highly correlated with lymph node metastasis and vascular invasion. The 5-year survival rate of patients with expression of COX-2 or VEGF was significantly lower than that of patients without COX-2 or VEGF expression. Multivariate analysis revealed that VEGF overexpression, lymph node metastasis, COX-2 overexpression, depth of invasion and vascular invasion were all independent prognostic factors of gastric carcinoma. CONCLUSION: Overexpression of COX-2 and VEGF in patients with gastric carcinoma can enhance the possibility of invasion and metastasis, implicating a poor prognosis. They may serve as the fairly good prognostic factors to indicate biologic behaviors of gastric carcinoma.     

Immunohistochemical expression of vascular endothelial growth factor (VEGF) does not correlate with microvessel density in renal cell carcinoma

The aim of present study was to investigate the relationship between the immunohistochemical expression of vascular endothelial growth factor (VEGF) and microvessel density (MVD) assessed by CD31 and endoglin (CD105) in renal cell carcinoma (RCC). Specimens from 45 cases of RCC. were formalin-fixed, paraffin embedded, and sections were stained with H&E. Additional sections from each case were stained for VEGF, CD31, CD105, and alpha smooth muscle cell actin (SMA). VEGF immunohistochemical expression was estimated as negative (0), weak positive (+1), moderate positive (+2), and intense positive (+3). Microvessel density (MVD) was estimated on 5 hot spots (x400) from each case, and the arithmetic media was the final result. MVD was separately calculated on slides stained with CD31 and CD105. The rate between mature and immature blood vessels was calculated on slides stained with CD31/CD105/SMA. Statistic analysis was performed with SPSS10.0. The immunoreaction for VEGF was positive in epithelial cells of the renal tubules, and occasionally, in endothelial cells. In RCC, tumor cells were positive in 34 from 45 cases (75.5%). 11 cases were negative, 14 were slightly positive (+1), 13 moderate (+2), and 7 intense (+3). No relationship was found between the expression of VEGF and pathological form and nuclear grade, excepting for the chromophilic variant (3 cases, all positive). CD31 was positive in all cases, and CD105 in 39 cases. The mean values of MVD on slides stained for CD31 and CD105 were: 31.68 (range 9.8-60.2)/20.66 (range 4.2-52.8). The rate CD31/SMA positive blood vessels was 1/0.62. VEGF was expressed in 75.5% of 45 cases with RCC, and the mean value of MVD CD31/CD105 was 31.68/20.66. The immunohistochemical expression of VEGF does not correlate with MVD performed on slides stained for both CD31 and endoglin. The majority of blood vessels in the tumor area are of mature type, with perivascular cells positive for SMA.     

胰腺癌组织VEGF和MVD表达与CT灌注成像的关系

血管内皮生长因子作为肿瘤血管生成的一种主要调控因子,与微血管密度密切相关．胰腺癌组织的血管内皮生长因子和微血管密度的测定对于判断患者的预后,指导临床治疗和判断疗效等具有重要作用．CT灌注成像可以通过无创伤检查反映胰腺癌的肿瘤血管构成, 在治疗前后提供有价值依据,对胰腺癌的诊治有重要意义．     

Clinical significance of vascular endothelial growth factor expression and neovascularization in colorectal carcinoma

AIM: To clarify the association of vascular endothelial growth factor (VEGF) and microvascular density (MVD)expression with the angiogenesis and prognosis of colorectal cancer.METHODS: A total of 97 cases of colorectal carcinomas were examined by immunohistochemical staining (SP method), using anti-VEGF and anti-factor CD34+ monoclonal antibodies. RESULTS: VEGF positive staining was obtained in 68 out of 97 cases (70.1%), and observed mainly in the cytoplasm of tumor cells, and also frequently in stromal cells. VEGF expression was more intense in poorly differentiated adenocarcinoma in comparison with others, but there was no significant correlation between VEGF expression and age,sex and stage. A significant correlation was found between the MVD and grades, and there was no significant relationship between the MVD and age, sex, and stage. The MVD in the VEGF positive group (68 cases) was higher than that in the negative group. Upon multivariate analysis, the significant variables were stage, tumor grade and MVD; VEGF expression was not an independent prognostic factor. CONCLUSION: The expression of VEGF has a significant correlation with MVD; MVD expression has prognostic value but VEGF has not in colon cancer.     

大肠癌血管内皮生长因子和新生血管的临床意义研究

目的　探讨血管内皮生长因子 (VEGF)和微血管密度 (MVD)在大肠癌组织中的表达 ,及其与肿瘤血管生成和预后的关系。方法　采用免疫组织化学方法 ,分别用 VEGF抗体和 CD34 因子抗体检测 97例大肠癌组织标本中 VEGF的表达水平和 MVD。结果　 97例大肠癌组织中 6 8例 VEGF阳性表达 ,主要表达于肿瘤细胞浆内 ,在低分化腺癌中的表达量最高 ;VEGF表达与性别、年龄和临床分期无相关性 ;VEGF阳性者和 VEGF阴性者的 MVD值比较有极显著性差异 (P<0 .0 1)。结论　大肠癌组织中 VEGF阳性表达不能作为判断患者预后的独立指标。 VEGF在大肠癌的肿瘤血管生成过程中发挥重要作用 ;MVD可以作为大肠癌患者独立的预后指标     

Clinical significance of vascular endothelial growth factor expression and neovascularization in colorectal carcinoma

AIM: To clarify the association of vascular endothelial growth factor (VEGF) and microvascular density (MVD) expression with the angiogenesis and prognosis of colorectal cancer.METHODS: A total of 97 cases of colorectal carcinomas were examined by immunohistochemical staining (SP method), using anti-VEGF and anti-factor CD34(+) monoclonal antibodies.RESULTS: VEGF positive staining was obtained in 68 out of 97 cases (70.1 %), and observed mainly in the cytoplasm of tumor cells, and also frequently in stromal cells. VEGF expression was more intense in poorly differentiated adenocarcinoma in comparison with others, but there was no significant correlation between VEGF expression and age, sex and stage. A significant correlation was found between the MVD and grades, and there was no significant relationship between the MVD and age, sex, and stage. The MVD in the VEGF positive group (68 cases) was higher than that in the negative group. Upon multivariate analysis, the significant variables were stage, tumor grade and MVD; VEGF expression was not an independent prognostic factor.CONCLUSION: The expression of VEGF has a significant correlation with MVD; MVD expression has prognostic value but VEGF has not in colon cancer.     

直肠癌组织中神经纤毛蛋白-1及血管内皮生长因子的表达与微血管形成的相关性

目的探讨直肠癌组织中神经纤毛蛋白-1(NRP-1)及血管内皮生长因子(VEGF)的表达与微血管形成的关系与直肠癌的发生机制。方法采集2013-06~2015-06在该院接受手术切除并经病理证实的直肠癌标本64例(份),以及癌旁正常组织。采用免疫组织化学法对标本组织进行染色,测定直肠癌组织的微血管密度(MVD),用实时逆转录(RT-PCR)法检测NRP-1和VEGF mRNA的表达水平,分析两者与MVD的相关性。结果与癌旁正常组织相比,直肠癌组织染色程度明显增强,范围明显扩大。直肠癌组织的NRP-1mRNA、VEGF mRNA表达水平及阳性表达率、MVD均明显高于癌旁正常组织,差异有统计学意义(P0.01)。直肠癌组织中,肿瘤大小≥5 cm者NRP-1 mRNA表达水平明显低于5 cm者,浸润深度在浆膜内、有淋巴结转移、Dukes分期为C期的直肠癌组织NRP-1 mRNA表达水平明显高于浸润深度在浆膜外、无淋巴结转移、Dukes分期为A、B期者(P0.05);低分化、浸润在浆膜内及有淋巴结转移、Dukes分期为C期的直肠癌组织VEGF mRNA表达水平明显高于高中分化、浸润在浆膜外、无淋巴结转移、Dukes分期为A、B期者(P0.05)。NRP-1 mRNA与VEGF mRNA表达水平呈正相关(P0.05);NRP-1、VEGF mRNA分别与MVD呈正相关(P0.05)。结论 NRP-1的高表达与直肠癌的发生和进展密切相关,其可增强VEGF的活性,促进肿瘤新血管的形成,增强直肠癌的侵袭和转移能力,故可作为评价直肠癌病情发展的生物学指标。     

Prognostic significance of cellular vascular endothelial growth factor expression in chronic phase chronic myeloid leukemia

The impact of elevated vascular endothelial growth factor (VEGF) expression on the course of chronic myeloid leukemia (CML) is unknown. By radioimmunoassay, we measured pretreatment cellular VEGF protein in bone marrow samples from 184 (148 chronic and 36 accelerated/blastic phases) CML patients and found the levels to be 1.6-fold higher than in 31 normal control bone marrow samples (P =.000 01). No significant differences were found in VEGF levels by different phases of CML (P =.1). VEGF levels correlated with older age (P =.01) and higher platelet count (P =.0003), but also with smaller spleen size (P =.004), lower white blood cell count (P =.0006), and lower percentage of peripheral blasts (P =.04). With the use of Cox proportional hazard model and VEGF levels as a continuous variable, high VEGF levels correlated with shorter survival of patients in chronic CML (P =.008). Multivariate analysis showed that VEGF was not independent of the synthesis stage (P =.09). These data suggest that VEGF plays a role in the biology of CML and that VEGF inhibitors should be investigated in CML.     

Prognostic significance of S100A4 and vascular endothelial growth factor expression in pancreatic cancer

AIM： To investigate the expression of vascular endothelial growth factor （VEGF） and calcium-binding protein S100A4 in pancreatic cancer and their relationship to the clinicopathological parameters and prognosis of pancreatic cancer. METHODS： Expression status of VEGF and S100A4 was examined in 62 surgical specimens of primary pancreatic cancer by immunohistochemistry. Correlation between the expression of VEGF and S100A4 and clinicopathological parameters was analyzed. RESULTS： Thirty-eight of 62 （61.3%） specimens of primary pancreatic cancer were positive for S100A4. Thirty-seven （59.7%） specimens showed positive expression of VEGF. The positive correlation between S100A4 and VEGF expression was significant in cancer tissues （P 〈 0.001）. S100A4 expression was significantly correlated with tumor size, TNM stage and poorer prognosis. VEGF expression had a significant correlation with poorer prognosis. The prognosis of 17 S100A4- and VEGF-negative cancer patients was significantly better than that of other patients （P 〈 0.05）. Distant metastasis （P = 0.001）, S100A4- （P = 0.008） and VEGF-positive expression （P = 0.016） were significantly independent prognostic predictors （P 〈 0.05）. CONCLUSION： Over-expression of S100A4 and VEGF plays an important role in the development of pancreatic cancer. Combined examination of the two molecules might be useful in evaluating the outcome of patients with pancreatic cancer.     

小窝蛋白1和血管内皮生长因子在结直肠癌组织中的表达及临床意义

目的:探讨小窝蛋白1(Cav-1)和血管内皮生长因子(VEGF)在结直肠癌组织中的表达,分析其与结直肠癌临床病理因素的关系及意义.方法:收集辽宁省肿瘤医院2007-01/2009-06肿瘤外科手术切除的83例结直肠癌标本及其配对正常结直肠组织（距癌灶边缘＞5 cm）.应用免疫组织化学SP法检测Cav-1和VEGF蛋白在...     

结肠癌血管内皮生长因子与微血管密度和p53的关系

目的探讨血管内皮生长因子(VEGF)在结肠癌中的表达及其与微血管密度(MVD)和p53之间的关系.方法用免疫组化SABC法检测68例结肠癌组织不同区域VEGF、MVD和p53的阳性表达.结果结肠癌区VEGF、MVD和p53的表达明显高于癌旁区和正常区.结肠癌组织VEGF及p53的表达与肿瘤浸润深度、淋巴结转移、远处转移、血管侵犯及Dukes分期密切相关,而与组织学分型无关.p53(+)或VEGF(+)组MVD(34.6±12.2;31.2±12.6)均显著高于p53(-)或VEGF(-)组(15.0±7.9;12.7±6.3,P＜0.01);VEGF和p53均为阳性时,MVD值最大(36.5±11.9,P＜0.01).MVD记数与VEGF表达明显相关(P＜0.01),p3表达与VEGF表达和MVD记数均显著相关(P＜0.01).结论在结肠癌血管生成过程中,可能存在p53-VEGF调节旁路,p53基因在调控肿瘤血管形成方面起重要作用.     

MMP-3和VEGF在胰腺癌中的表达及临床意义

目的:探讨MMP-3和VEGF蛋白在胰腺癌组织中的表达及其与胰腺癌临床病理特征、预后及胰腺癌组织中血管新生的关系.方法:用免疫组织化学检测了56例手术切除的胰腺癌组织和正常胰腺组织中MMP-3、VEGF的蛋白表达和微血管密度,并请相关专业人员进行微血管密度计数分析.结果:在56例胰腺癌标本中有42例MMP-3(75.0...     

大肠癌组织中血管内皮生长因子的表达及意义

目的 探讨血管内皮生长因子（ＶＥＧＦ）在大肠癌组织中的表达及其与大砀癌发展的关系。方法 应用名单组织化学ＬＳＡＢ法检测５２你人大肠癌组织的ＶＥＧＦ表达,分析ＶＥＧＦ与大肠癌组织类类型、分化程度、Ｄｕｋｅｓ分期及淋巴结转移毕率随关大肠癌Ｋｕｋｅｓ分期的进展而增加,且Ｄｕｋｅｓ Ｃ期的ＶＥＧＦ表达率与ＤｕｋｅｓＡ期相比有显著性差异（Ｐ〈０．０５）,ＶＥＧＦ在有淋巴结转移组的４０．００％（Ｐ〈０．０１）     

Prognostic implications of estrogen receptor 1 and vascular endothelial growth factor A expression in primary gallbladder carcinoma

AIM: To investigate the prognostic significance of estrogen receptor 1(ER1) and vascular endothelial growth factor A(VEGF-A) expression in primary gallbladder carcinoma(GBC) to identify new prognostic markers for this malignancy.METHODS: Using immunohistochemistry, we investigated ER1 and VEGF-A expression in 78 GBC and 78 cholelithiasis(CS) tissues. The results were correlated with clinicopathological features. Univariate and multivariate analyses were performed to evaluate the relationship between ER1 and VEGF-A expression and patients' prognosis. Further Kaplan-Meier survival analysis was also performed. RESULTS: ER1 and VEGF-A expression was significantly higher in GBC compared with CS(47/78 vs 28/78, P 0.05; 51/78 vs 33/78, P 0.05). ER1 expression was correlated with gender(P 0.05) and VEGF-A expression was correlated with tumor differentiation in GBC patients(P 0.05). In univariate analysis, age and tumor node metastasis(TNM) stage were factors associated with GBC prognosis(P 0.05). Although there was no statistical difference between the expression of ER1 or VEGF-A and overall survival, the high expression of ER1 combined with VEGF-A predicted a poor prognosis for GBC patients(16.30 ± 1.87 vs 24.97 ± 2.09, log-rank P 0.05). In multivariate analysis, combined expression of ER1 and VEGF-A and TNM stage were independent prognostic factors for GBC patients(P 0.05).CONCLUSION: Combined expression of ER1 and VEGF-A is a potential prognostic marker for GBC patients. Clinical detection of ER1 and VEGF-A in surgically resected GBC tissues would provide animportant reference for decision-making of postoperative treatment programs.