胰腺癌中磷酸酶和张力蛋白同源物基因及B7-H1蛋白的表达及其临床意义

Objective To investigate the probable correlation between the expressions of phosphatase and tensin homologue deleted on chromosometen (PTEN) and B7-H1 protein in pancreatic carcinoma and the biological behavior characteristics of tumors. Methods Forty-three patients were recruited who had undergone surgical resection for pancreatic carcinoma between 2002 and 2009. The PTEN and B7-H1 protein expressions in the tissue specimens of these 43 patients and 5 non-pancreatic carcinoma people' s pancreatic tissue specimens were evaluated by immunohistochemistry ELPS technique, and the clinical and pathological features of these specimens and the follow-up information were analyzed. Results PTEN expressions were significantly lower in pancreatic carcinoma tissues than in non-pancreatic carcinoma people' s pancreatic tissues but B7-H1 expressions were significantly higher ( P ＜ 0. 01 ). The expression of PTEN was negatively correlated to that of B7-H1 (r = -0.414 ,P ＜0. 01). PTEN and B7-H1 expressions correlated with the pathological grade and tumor-node-metastasis ( TNM ) stage, peripancreatic invasion, regional lymph node involvement,respectively (P＜0. 05). B7-H1 expressions also significantly correlated with the ages (P＜0. 01). Furthermore, PTEN and B7-H1 expressions showed significant prognostic effects (P＜0.01) and there are correlations existed between combined PTEN/B7-H1 expression and prognostic effects (P ＜0. 05). Conclusion The expression of PTEN and B7-H1 may be significantly correlated to the carcinogenesis,development and prognosis of pancreatic carcinoma.     

DNA甲基转移酶在肝癌中的表达及其临床意义

Objective To investigate the expression of DNA methyltransferases (DNMTs) in liver cancer and its clinical significance. Methods The specimens of liver cancer tissues, adjacent tissues, cirrhotic tissues and chronic hepatitis tissues were collected from 50 patients who received radical resection at the First Affiliated Hospital of Sun Yat-Sen University from July 2007 to April 2008. The mRNA and protein expressions of DNMT1,DNMT3a and DNMT3b in liver cancer tissues, adjacent tissues, cirrhotic tissues and chronic hepatitis tissues were detected by real-time quantitative PCR and immunohistochemical staining. The mRNA expression of DNMTs in the liver cancer tissues was compared with those in the adjacent tissues, cirrhotic tissues and chronic hepatitis tissues by using t test and Mann-Whitney U test. The correlation between the protein expression of DNMTs in the liver cancer tissue and the clinicopathological features was analyzed by chi-square test or Fisher exact test, and the tumor-free survival time was analyzed by using Kaplan-Meier method and the difference in tumor-free survival rate between different patients was analyzed by Log-rank test. Results The mRNA expressions of DNMT1, DNMT3a and DNMT3b in the liver cancer tissue were 2.57, 2.29 and 4.86 times higher than those in the adjacent tissues (t = 3.94, 2. 72, 4. 06, P ＜ 0.05 ). The mRNA expressions of DNMT1, DNMT3a and DNMT3b were 2.38,2.14 and 4.66 times higher than those in the cirrhotic tissues, and 6.12, 4.58 and 12.99 times higher than those in the chronic hepatitis tissues. The mRNA expressions of DNMT1, DNMT3a and DNMT3b in the liver cancer tissue were significantly higher than those in the cirrhotic tissues and chronic hepatitis tissues ( U = 587.5,730. 0,562.5; 65.5, 64.5, 71.0, P ＜ 0.05). The protein expression of DNMT1 was correlated with the size, number,TNM stages and vascular invasion of tumors ( x2 = 4.08, 5.95, 4.08, P ＜ 0.05 ). The protein expression of DNMT3a was correlated with the size, number and TNM stages of tumors (x2 = 4.08, 5.95, 4.08, P ＜ 0.05 ).The mean tumor recurrence time of patients with low expressions of DNMT1 and DNMT3a were 9.4 and 8.7 months, which were significantly longer than 5.0 and 3.2 months of those with high expressions of DNMT1 and DNMT3a (x2 =3.89, 9.91, P＜0.05). Conclusions DNMTs play an important role in hepatocarcinogenesis.High expressions of DNMT1 and DNMT3a are correlated with the postoperative recurrence of liver cancer, which are valuable prognostic factors for liver cancer.     

KiSS-1、KiSS-1R及MMP-9表达与肝细胞癌侵袭转移的关系及意义

目的 检测肿瘤转移抑制基因KiSS-1及其配体KiSS-1R和基质金属蛋白酶-9(MMP-9)在肝细胞癌(HCC)中的表达,探讨KiSS-1表达与肝细胞癌侵袭转移的关系及其机制.方法 利用逆转录聚合酶链反应(RT-PCR)技术,检测HCC、癌旁肝组织及远癌肝组织中KiSS-1、KiSS-1R mRNA的表达情况;应用HCC组织芯片,结合免疫组化及彩色图像分析技术检测了KiSS-1、MMP-9蛋白在HCC芯片中各组织的相对表达量.结果 KiSS-1 mRNA在HCC中表达明显低于癌旁、远癌肝组织(P＜0.01).在转移组和临床Ⅲ期HCC中,KiSS-1蛋白的表达明显低于无转移及临床分期Ⅰ和Ⅱ期HCC(P＜0.01);KiSS-1在肝内转移灶中的表达量显著低于原发灶(P＜0.01).在转移组的HCC中,MMP-9表达量显著高于无转移的HCC(P＜0.01).在HCC组织中,KiSS-1和MMP-9的表达呈负相关性(r=-0.340,P＜0.01).结论 KiSS-1和MMP-9的表达失衡与HCC侵袭转移有关,KiSS-1的缺失表达可作为预测HCC转移潜能的有价值的参考指标.

Abstract：

Objective To detect the expression of KiSS-1, KiSS-1R and MMP-9 in hepatocellular carcinoma (HCC). To study the correlation of KiSS-1, KiSS-1R and MMP-9 expression with invasion and metastasis of HCC, and to explore the underlying mechanisms. Methods The expression of KiSS-1 , KiSS-1R mRNA in 33 HCC samples, 26 non-neoplastic adjacent liver tissue samples and 13 non-neoplastic distant liver tissue samples were detected by RT-PCR. Tissue chips were constructed by modified manual tools, which contained HCC, non-neoplastic adjacent liver tissues, non-neoplastic distant liver tissues, normal liver tissues and intrahepatic metastasis lesions. The expression of KiSS-1 and MMP-9 protein was determined by tissue chips, immunohistochemistry and semi-quantitative image analysis in 150 HCC, 137 non-neoplastic adjacent liver tissue, 98 non-neoplastic distant liver tissues, 16 normal liver tissues and 37 intrahepatic metastasis lesion samples. Results The results of RT-PCR showed that compared with the non-neoplastic adjacent liver tissues and the non-neoplastic distant liver tissues, the expression of KiSS-1 mRNA in HCC was significantly lower (P＜0.01). The expression of KiSS-1R mRNA did not changed in HCC and non-neoplastic liver tissues (P＞0.05). The expression of KiSS-1 protein was lower in HCC with metastasis and in clinical stage Ⅲ than that in those with non-metastasis, and in clinical stages Ⅰ and Ⅱ . It was also higher in the primary than in the metastasis lesions (P＜0.01, respectively). The expression of MMP-9 was higher in tumors having peplos invasion and metastasis than in those with negative peplos invasion and non-metastasis. It was lower in the primary than the metastasis lesions (P＜0. 01, respectively).Negative correlation between KiSS-1 and MMP-9 expression was found in HCC(r=- 0.340,P＜0.01). Conclusions The imbalance between KiSS-1 and MMP-9 expression might play an important role in enhancing the invasive and metastatic capacity of HCC. Loss of KiSS-1 expression might predict an aggressive clinical behavior and was associated with metastatic potential in HCC.     

ABCG2蛋白在肝癌中表达的临床意义

Objective To investigate the expression and clinical significance of ABCG2 protein in hepato-cellular carcinoma (HCC). Methods Specimens of HCC were collected at The First Aifiliated Hospital of Sun Yat-sen University from January 2005 to December 2006. The expression of ABCG2 protein in 165 samples of HCC tissue, 25 samples of normal liver tissue and 40 samples of cirrhotic liver tissue was detected using immunohisto-chemistry. The correlation between the expression of ABCG2 protein and clinicopathological characters was then analyzed. Enumeration data, survival rate and the difference between groups were analyzed with a chi-square test, the Kaplan-Meier method and Log-rank test, respectively. Results ABCG2 protein expression was weakly posi-tive in all normal and cirrhotic liver tissues. In HCC tissues, the expression of ABCG2 protein was strongly positive in 66 cases and weakly positive in 99 cases. The expression of ABCG2 protein was related to tumor diameter, tumor number, adjacent organ invasion and TNM stages (χ2 =8. 130, 14. 279, 4. 820, 21. 179, P <0. 05). Kaplan-Meier survival analysis revealed that patients with strongly positive ABCG2 protein had a significantly lower 3-year overall survival (24. 1%) compared with those with weakly positive ABCG2 protein (39. 4%) (χ2 = 15.716, P<0.05). Conclusions The expression level of ABCG2 protein is related to tumor invasiveness, TNM stage and prognosis. ABCG2 has the potential to become a new target for HCC treatment.     

肿瘤转移抑制蛋白在肝癌中的表达及其意义

目的 探讨肿瘤转移抑制蛋白1(metastasis suppressor 1,MTSS1)在肝癌组织,肝硬化组织,正常肝组织中的表达及其意义.方法采用免疫组织化学检测MTSS1在肝癌组织,肝硬化组织,正常肝组织中的表达,并用单因素分析表达与临床病理因素的关系.用Spearman等级相关分析MTSSl表达水平与肝癌患者TNM分期的关系.对肝癌患者进行5年生存随访,采用Kaplan-Meier生存曲线分析.结果 肝癌组织MTSS1表达水平与正常肝组织比较,差异有统计学意义(U=168.000,P＜0.05);肝癌组织比肝硬化组织高,二者比较差异有统计学意义(U=106.000,P＜0.05);MTSS1表达水平与肝癌患者的TNM分期、有无血管侵袭和肿瘤包膜有关(分别U=259.000,258.500,202.000,均P＜0.05),与肝癌患者的年龄、性别、肿瘤大小、AFP水平、乙肝表面抗原无关(P＞0.05).MTSS1表达水平与临床TNM分级间呈负相关,即临床TNM分级越早期所对应的MTSS1表达水平越高(rs=-0.383,P＜0.05).MTSS1阳性表达患者5年生存率明显低于MTSS1阴性及弱阳性表达患者,差异有统计学意义(分别34.1%,52.3%,x2=6.386,P＜0.05).结论 MTSS1高表达可能在早期肝癌进展中发挥重要作用,预示预后不良.

Abstract：

Objective To explore the expression and significance of MTSS1 ( metastasis suppressor 1) in hepatocellular carcinoma.Methods MTSS1 expression was detected by immunohistochemistry in hepatocellular carcinoma, liver cirrhosis and normal liver tissues.Single-factor analysis was used to study the relationship with clinicopathological factor.Correlations between MTSS1 expression and TNM stage were analyzed with Spearman rank correlation analysis.Postoperative 5-year survival was evaluated using Kaplan-Meier survival curve analysis.Results The expression of MTSS1 in hepatocellular carcinoma was higher than normal liver tissue ( U = 168.000, P ＜ 0.05), and liver cirrhotic tissue ( U = 106.000, P ＜ 0.05); MTSS1 expression was correlated with TNM stage of hepatocellular carcinoma patients, lymph vascular invasion and tumor capsule ( separately U = 259.000, 258.500, 202.000, all P ＜ 0.05).MTSS1 expression in hepatocellular carcinoma was not correlated with patients age, gender, tumor size, AFP level, and hepatitis B surface antigen.MTSS1 expression and TNM stage of liver cancer patients was negatively correlated ( rs = - 0.383 , P ＜ 0.05 ).Postoperative 5-year survival of hepatocellular carcinoma patients with MTSS1 positive expression was significantly poorer than patients with negative and weakly positive expression (respectively 34.1% and 52.3% , x2 =6.386, P ＜ 0.05).Conclusions MTSS1 high expression may play an important role in the early hepatocellular carcinoma progression, indicating a poor prognosis.     

Association of hypoxia-inducible factor 1α expression with microlymphatic vessel density and lymph node micrometastasis in rectal cancer

Objective To explore the association of the expression of hypoxia-inducible factor 1α (HIF-1α) with microlymphatic vessel density (MLVD) and lymph node micro-metastasis in rectal cancer.Methods The experimental group consisted of 40 middle-low rectal cancer specimens pathologically confirmed at the First Affiliated Hospital of Anhui Medical University between 2000 and 2003.Forty samples of normal tissues taken from the corresponding area around the cancer were used as the control group. Immunohistochemistry was used to detect HIF-1α expression and MLVD in both the tumor tissues and the adjacent normal tissues. Lymph node micrometastasis was ascertained using immunohistochemical staining with CK20. Results In rectal cancer tissues, the HIF-lα expression was 77 386±14 911 and MLVD was 7.3±0.7, significantly higher than those in normal adjacent tissues(33 092±5877 and 0.3±0.2, both P＜0.01). The HIF-1α expression was positively correlated with MLVD in rectal cancer (r=0.781, P＜0.01). Thirty-one patients had no lymph nodes metastasis and 10 had micrometastasis. The HIF-1α expression and MLVD in specimens with lymph node micrometastasis was significantly higher than that in those without lymph node micrometastasis(P＜0.05). Conclusion HIF-1α and MLVD play important roles in the development of rectal cancer, which may promote lymphatic micrometastasis in rectal cancer.     

细胞外基质蛋白1在原发性肝癌中的表达与预后的关系

目的 探讨原发性肝癌中细胞外基质蛋白1(extracellular matrix protein 1,ECM1)表达水平与肝癌预后的关系.方法 选取77例原发性肝癌手术切除标本,采用免疫组织化学方法检测ECM1表达,并分析ECM1表达与肝癌临床病理特征及预后与复发的关系.结果 免疫组织化学染色显示ECM1主要表达在胞质中.肝癌组织中ECM1表达阳性率为74.0%(57/77),与肝癌血管侵犯(χ2=6.523,P=0.011)和TNM分级有关(χ2=6.989,P=0.030),而与患者性别、年龄、血清AFP水平、肿瘤大小、癌灶数、分化程度等指标无明显相关性(P＞0.05).ECM1阳性表达患者术后总生存率和无瘤生存率明显低于阴性表达者(P=0.016).多因素分析表明,ECM1表达是影响肝癌总生存和无瘤生存的独立危险因素(RR=3.721,P=0.002;PR=2.323,P=0.031).结论 EC M1的表达与肝癌侵袭转移特性有关,可作为判断肝癌术后预后、复发的指标之一.

Abstract：

Objective To examine the expression of extracellular matrix protein 1 ( ECM1 ) in hepatocellular carcinoma (HCC) and its correlation with prognosis and recurrence of HCC.Methods Immunohistochemistry was used to detect expression of ECM1 in cancerous tissues from 77 HCC patients. The correlation between ECM1 expression and clinicopathologic features and prognosis were analyzed. Results ECM1 is mainly expressed in the cytoplasm of liver cells. The positive rate of ECM1 expression in HCC tissues were 74. 0% (57/77), and the expression level was significantly correlated with vascular invasion (χ2 =6.523, P =0.011 ) and TNM stage (χ2 =6.989, P =0.030). No significant correlation was found between the expression of ECM1 and patient's gender, age, AFP level of plasm, tumor size, number of nodules, and tumor differentiation. Patients with positive ECM1 expression have significantly poorer overall survival (OS) and disease-free survival (DFS) after curative resection than those with negative ECM1 expression (P =0. 016). The Cox multivariate analysis demonstrated that among the factors analyzed, ECM1 expression is an independent prognostic factors for OS and DFS in HCC patients after a curative resection (RR=3.721, P=0.002; RR=2.323, P=0.031). Conclusions Positive ECM1 is correlated with postoperative metastasis and invasion of HCC and poor prognosis.     

肌动蛋白交联蛋白与血管内皮生长因子在肾细胞癌中的表达及其相关性

Objective To investigate the expression of Fascin and vascular endothelial growth factor (VEGF) in renal cell carcinoma (RCC) and the correlation with the biological behaviors. Methods The immunohistochemistry staining method was used to detect the expression of Fascin and VEGF in 92 cases of RCC and 20 cases of normal renal tissues as controls. Results The expression of Fascin in carcinoma tissue was significantly higher than that in normal tissues ( P ＜ 0. 05 ). Positive expression of Fascin and VEGF in renal cell carcinoma tissue was correlated with tumor grade ( P ＜ 0. 05 ) and clinical stage (P ＜0. 05 ) , but not with age, gender and different histological categories (P ＞ 0. 05 ). There was also a positive correlation between Fascin and VEGF (P ＜ 0. 05 ). Conclusion Fascin and VEGF are objective markers to estimate the behaviors of renal cell carcinoma.     

磷酸化蛋白p27在肝细胞肝癌中表达及其意义

目的 探讨人肝细胞肝癌组织中磷酸化蛋白p27的表达及其与临床病理特征的关系.方法 利用Ti4+-IMAC富集和LC-MS2-MS3检测磷酸化蛋白的方法鉴定人肝细胞肝癌组织磷酸化蛋白,进一步利用Western blot检测40例肝细胞肝癌、相应癌旁组织和12例正常肝组织中T187、S10磷酸化p27蛋白(P-p27T187、P-p27S10)的表达.结果在肝癌组织磷酸化蛋白的筛选中鉴定到磷酸化蛋白p27,并确定IPI、磷酸化位点、蛋白激酶等信息,Western blot检测提示P-p27T187与P-p27S10在肝细胞肝癌组织表达明显高于癌旁、正常肝组织,其相对表达量分别为0.635±0.108、0.306±0.078和0.149±0.031,差异有统计学意义(P<0.05).且P-p27T187和P-p27S10与肝癌病理分级、临床分期及转移相关,而与发病年龄、性别、肿瘤大小、肿瘤数目等无明显相关(P>0.05).结论 磷酸化蛋白p27在肝细胞肝癌中表达水平明显升高,与肝癌的发生发展及转移相关.     

Livin蛋白在原发性肝细胞癌组织中的表达和意义

目的 探讨凋亡抑制蛋白(inhibitor of apoptosis protein,IAP)Livin在人原发性肝癌(HCC)组织中的表达及其与HCC血管生成的关系.方法 应用免疫组织化学法检测42例HCC及对应癌旁组织和12例正常肝组织内Livin的表达情况,观察Livin蛋白与HCC病理学特点及微血管密度(microvessel density,MVD)之间的关系.结果 免疫组织化学(SP)染色结果显示,Livin蛋白在正常肝组织中均不表达,而在42例HCC中的阳性表达率(73.81%)显著高于癌旁组织(4.76%)和正常肝脏组织,有显著统计学意义(X2=39.13,P＜0.05;X2=17.89,P＜0.05);Livin蛋白在病理分级Ⅲ～Ⅳ组阳性表达率(85.12%)强度明显高于病理分级Ⅰ～Ⅱ组(53.33%),两者比较差异有显著统计学意义(X2=4.690,P＜0.05);Livin蛋白在有转移HCC中的阳性表达率(89.47%)明显高于无转移组(60.89%),有统计学意义(X2=4.404,P＜0.05);Livin蛋白阳性表达HCC中的MVD值明显高于Livin蛋白阴性表达HCC中MVD值(23.56±5.12/17.63±4.86;P＜0.05).结论 Livin蛋白基因在原发性肝癌组织中高表达,提示该基因可能参与了肝癌的发生发展过程;Livin蛋白在HCC组织中的表达明显上调且与血管生成和浸润转移有关.     

利用组织芯片技术研究酪氨酸蛋白激酶在肝癌组织中的表达及意义

目的 观察酪氨酸蛋白激酶ERK、P38、C-jun、JAK2、STAT3、STAT5在肝癌组织中的表达及相互关系,探讨酪氨酸蛋白激酶表达与肝癌病人临床特征之间的关系.方法 收集原发性肝癌手术切除标本30例,制作组织芯片,以肝硬化组织作对照,采用免疫组化SP法研究酪氨酸蛋白激酶ERK、P38、C-jun、JAK2、STAT3、STAT5在肝癌组织与肝硬化组织中的表达.结果 ERK、P38、C-jun、JAK2、STAT3、STAT5在肝癌组织中的表达平均光密度值分别为(0.220±0.033,0.174±0.024,0.183±0.064,0.192±0.044.0.197±0.078,0.181±0.066),显著高于肝硬化组(0.065±0.028,0.058±0.028,0.042±0.016,0.070±0.030,0.052±0.024,0.052±0.023,P＜0.01).ERK与C-jun、JAK2、STAT3、STAT5在肝癌组织中表达呈显著正相关,(P＜0.01或P＜0.05),与P38呈显著负相关(r=0.404,P＜0.05).JAK2的过度表达与肝癌组织中细胞的分化程度有关,在低分化肝癌组织中表达显著率高于高中分化肝癌组织.结论 MAPK和JAK-STAT通路的过度活化在肝癌发生发展过程中起重要作用,细胞信号转导系统失去正常的协调平衡可能是导致肿瘤发生的重要原因.     

3p21.3区域相关抑癌基因——RASSF1A、BLU和SEMA3B在肝癌组织中的表达及临床意义

目的 探讨3p21.3区域相关基因--RASSF1A、BLU和SEMA3B基因转录表达与肝细胞癌发生及预后的关系.方法 用RT-PCR的方法 检测RASSF1A、BLU和SEMA3B基因在79例肝癌组织以及相应的癌旁组织中的表达.结果 (1)肝细胞癌组织中三种基因的表达缺失率均明显高于癌旁组织(P＜0.05);(2)合并有肝硬化或者乙肝表面抗原阳性的病人,其肝癌组织中三种基因的表达失活率显著高于无肝硬化或乙肝表面抗原阴性病人(P＜0.05);(3)低分化型癌组织中三种基因缺失率均高于中、高分化型,但SEMA3B的差异无显著性(P＞0.05);(4)年龄、性别、肝功能分级和血清AFP值对三种基因表达的影响无显著性差异(P＞0.05).结论 肝癌组织中3p21.3区域相关抑癌基因转录表达缺失,可能参与调控肝癌的发生、发展过程,并影响其预后.     

EphA7基因在原发性肝细胞癌中的表达及其临床意义

目的 探讨原发性肝细胞癌中EphA7 mRNA的表达及其临床意义.方法 应用逆转录-聚合酶链反应(RT-PCR)及实时荧光定量PCR法检测EphA7 mRNA在40例肝癌及相应的癌旁肝组织和10例正常肝组织中的表达,并分析其与肝癌临床病理因素之间的关系.结果 40例肝癌组织及相应的癌旁肝组织和10例正常肝组织中均有EphA7 mRNA的表达.实时荧光定量PCR分析显示EphA7 mRNA在肝癌组织(20.0711±32.0232)中的表达显著高于癌旁肝组织(4.5184±9.4738,P＜0.05)和正常肝组织(4.1764±4.7193,P＜0.05),而在癌旁肝组织和正常肝组织中的表达差异无统计学意义(P＞0.05).EphA7 mRNA的过表达与肝癌细胞的分化程度、门静脉癌栓的形成及淋巴结转移等临床病理因素有关(P＜0.05).结论 EphA7的过表达与原发性肝细胞癌的生物学行为密切相关,可能在肝癌的恶性转化、侵袭和转移过程中发挥作用.     

肝细胞癌中MyD88和STAT3的表达及其意义

目的 探讨髓样分化因子88(MyD88)和转录激活因子3(STAT3)在肝细胞癌(HCC)组织中的表达及其生物学意义.方法 采用免疫组化方法 检测MyD88和STAT3在82例肝痛组织及其对应的癌旁肝组织中的表达水平.结合肝癌临床病理指标分析它们的相关性.结果 MyD88和STAT3蛋白在癌组织中的阳性表达率分别为67.1%(55/82)和69.5%(57/82),高于癌旁肝组织中的11.0%(9/82)和8.5%(7/82).差异均具有统计学意义(P＜0.05).在肝癌组织中MyD88与STAT3的阳性表达呈正相关(r=0.578,P=0.002).MyD88和STAT3表达与HCC患者的性别、癌的分化程度、有无HBV感染和肝硬化有关;上述4指标分组间差异具有显著性(P＜0.05).而与HCC肿瘤大小及有无静脉浸润无关;该2指标分组间差异无显著性(P＞0.05).结论 MyD88和STAT3表达上调,导致肝癌细胞增殖和免疫逃逸是肝癌发生发展的重要分子机制.     

新生血管生成与肝细胞癌侵袭、转移和预后的关系

目的　探讨原发性肝细胞癌 (HCC)新生血管生成与临床病理指标的关系及其可否用于预测HCC侵袭、转移和预后。方法　采用免疫组织化学方法 ,检测了 2 0例正常肝组织、2 0例肝硬化组织、85例HCC及癌旁组织中CD34的表达 ,以及HCC的微血管密度 (MVD)。结果　CD34的染色定位在血管内皮细胞上 ,HCC窦样血管CD34表达为强阳性 ;除门管区小血管分支及中央静脉外 ,癌旁肝组织、肝硬化组织、正常肝组织基本不表达CD34 ;HCC的MVD范围 (18～ 36 0 ) / 0 74mm2 、(15 6 5±6 2 4) / 0 74mm2 。HCC的MVD与肿瘤大小、病灶数目、分化程度、门静脉瘤栓形成、包膜状况均有显著关系 (P <0 0 5或 0 0 1) ;与HBsAg是否阳性、术前AFP水平无关 (P >0 0 5 ) ;与预后亦有关 ,少血管组(MVD <15 6 )预后显著优于多血管组 (MVD≥ 15 6 ) ,术后平均无瘤生存期少血管组为 5 3个月 ,多血管组为 14个月 ,(P <0 0 0 1)。结论　CD34的表达反映了HCC的新生血管化 ,与HCC的发展有关。MVD可作为判断HCC侵袭、转移和预后的指标。     

Caveolin-1在肝细胞癌表达及与肿瘤血管生成的关系

目的：探讨caveolin-1与肝细胞癌（HCC）侵袭转移的关系及其可能的机制。方法：应用实时PCR方法检测伴肝内转移的 HCC组织、癌旁组织、肝硬化组织、正常肝组织中 caveolin-1 mRNA的表达;用Western blot方法检测伴肝内转移的 HCC组织、癌旁组织中caveolin-1蛋白的表达;用免疫组化方法检测75例HCC组织中caveolin-1,血管内皮生长因子（VEGF）,CD34,α-平滑肌肌动蛋白（α-SMA）的表达,分析caveolin-1,VEGF的表达以及肿瘤微血管密度（MVD）,非成对动脉（UA）计数与临床病理因素的关系。结果：在伴肝内转移的HCC组织中,caveolin-1 mRNA表达明显高于癌旁组织、肝硬化组织、正常肝组织（均P<0.05）,其蛋白表达明显高于癌旁组织;caveolin-1表达水平的升高与肿瘤转移有关（P<0.05）,且caveolin-1的表达与VEGF表达及MVD和UA计数呈正相关（r=0.293,P=0.011;r=0.361,P=0.001;r=0.388,P=0.001）。结论：caveolin-1表达升高促进HCC的侵袭转移,其机制可能是通过诱导HCC表达VEGF,促进肿瘤新生血管生成而实现的。     

CD146与VEGF在人肝细胞癌组织中的表达及其临床意义

目的 该研究旨在观察人肝细胞癌(hepatocellular carcinoma,HCC)组织中CD146与VEGF的表达及其关系,探讨它们在HCC中与血管生成的关系及其临床意义.方法 采用免疫组化法检测60例HCC癌组织及癌旁肝组织中CD146、VEGF的表达情况,用CD34标记免疫组化法检测微血管密度(microvessel density,MVD),分析它们的表达与临床病理指标的关系.结果 CD146、VEGF在癌组织中的阳性率分别为66.67%和63.33%,而在癌旁组织中的阳性率分别为30%和33.33%,癌组织与癌旁组织比较差异有显著性(P＜0.05).癌组织的MVD为54.92±8.55/200倍视野,癌旁组织的MVD为21.36±6.63/200倍视野,两者差异有显著性(P＜0.05).与癌旁组织相比,癌组织中CD146、VEGF表达及MVD明显增加.CD146在人肝癌组织中的表达与临床分期、门静脉癌栓及肝外转移明显有关,而与术后复发、肿瘤个数、肿瘤直径、血清AFP水平及肿瘤分化程度无明显关系.VEGF在人肝癌组织中的表达与术后复发、肝外转移、临床分期、门静脉癌栓、肿瘤直径相关,而与肿瘤个数、血清AFP水平及肿瘤分化程度无明显关系.在癌组织中MVD与CD146、VEGF的表达呈正相关,CD146与VEGF亦呈正相关.结论 肝癌组织中CD146及VEGF高表达,与肿瘤血管形成和转移密切相关,分析它们的表达有助于综合判断HCC的预后.     

原发性肝细胞癌以及近癌旁组织微血管密度CD105表达及其临床意义

目的 研究肝细胞癌(HCC)及其近癌旁组织微血管密度(MVD-CD105)分布,探讨MVD-CD105在HCC、近癌旁组织的分布规律、临床意义以及CD105标染HCC组织微血管的特异性.方法 采用免疫组织化学方法检测63例HCC组织、近癌旁组织MVD-CD105,比较HCC组织和近癌旁组织MVD-CD105分布特点及其与临床参数的关系.结果 63例HCC及其近癌旁组织血管CD105阳性表达率为100％,近癌旁组织表达强度高于癌组织(χ2=9.184,P＜0.01).HCC组织MVD-CD105为(58.37±21.45)/0.74mm2,近癌旁组织为(81.62±19.86)/0.74mm2,近癌旁组织MVD-CD105分布显著高于癌组织(t=2.438,P＜0.05).HCC组织中的MVD-CD105阳性表达分布与肿瘤转移及TNM分期有关(P＜0.01).近癌旁组织的MVD-CD105阳性表达分布与肿瘤TNM分期及2年存活时间有关(P＜0.05).结论 CD105标染HCC组织MVD未体现出肿瘤微血管标染特异性.HCC组织MVD-CD105高表达、分布意味着肿瘤的局部转移和进展.CD105分子不能作为抗肝癌肿瘤血管生成靶向治疗的靶标,但肝癌MVD-CD105的检测对于后续综合治疗有指导意义.