【Abstract】ObjectiveTo investigate whether abnormal expression of β-catenin and high expression of c-myc have played a possible role in hilar cholangiocarcinoma carcinogenesis.MethodsBy using immunohitochemical staining (SP method), the authors detected the expression of β-catenin and c-myc in 42 paraffin-embedded samples of hilar cholangiocarcinoma and 10 benign bile duct disease tissue, and then analyzed the relationship of them with clinical data. Resultsβ-catenin was normally expressed in 10 benign bile duct disease tissue, while expression of c-myc was negtive. In hilar cholangiocarcinoma tissue, the positive expression rate of β-catenin （71.4%） was significantly correlated to the lymphoid node metastasis of hilar cholangiocarcinoma (χ2=4.75，P＜0.05),but was not statistically correlated to the tumor size，the extent of differentiation and infiltration (χ2=3.35，3.45，4.32，Pgt;0.05); the expression rate of c-myc (76.2%) was correlated with the extent of differentiation(χ2=4.87, P＜0.05),but not with the size, infiltration, lymphoid metastasis（χ2= 3.47，4.12，2.76， Pgt;0.05). The abnormal expression of β-catenin had relevance to the high expression of c-myc with hilar cholangiocarcinoma （r=0.324,P＜0.01）. ConclusionThe expression of beta-catenin and c-myc is significantly altered in hilar cholangiocarcinoma, and correlate with biological features of cholangiocarcinoma.The abnormal expression of beta-catenin is one of the mechanisms for the spread of hilar cholangiocarcinoma.
Objective To investigate the expression of urokinase-type plasminogen activator (uPA) mRNA in gastric cancer tissues and cancer-adjacent tissues and the relationship between its expression and biologic behavior of tumor. Methods Fourty-eight cases with gastric cancer were detected for the expression of uPA mRNA by fluorogenic probe quantitative reverse transcription polymerase chain reaction (RTPCR). Results The positive expression rate of uPA mRNA was 83.3%, 25.0%, 93.8% and 62.5% in gastric cancer tissues,cancer-adjacent tissues, gastric cancer tissues with lymph node metastasis and with non-lymph node metastasis respectively. Expression of uPA mRNA was positively related with the invasion depth of gastric cancer. Conclusion Expression of uPA mRNA is significantly increased in gastric cancer and it can be used as an indicator to judge the metastasis and prognosis of tumor.
目的 评价股浅静脉瓣膜环形缩窄术治疗原发性下肢深静脉瓣膜功能不全(primary deep venous insufficiency,PDVI)的疗效和应用价值。方法 2002年4月至2006年4月期间经顺行性静脉造影加Valsalva试验证实为PDVI者119例(158条),其中2002年4月至2004年1月收治者仅行大隐静脉高位结扎剥脱+交通支结扎术(前期治疗组),2004年2月至2006年4月收治者在前期治疗方法的基础上加行股浅静脉瓣膜环形缩窄术(后期治疗组),以CEAP(clinical,etiologic,anatomic,and pathophysiologic)临床分级与临床记分评价2组的疗效。结果 2组患者术后临床分级及临床记分均明显下降(前期治疗组由5.9±3.6降至2.1±1.3,P＜0.01; 后期治疗组由6.4±3.5降至1.7±1.8,P＜0.01),且后期治疗组较前期治疗组下降程度更大(P＜0.01)。结论 股浅静脉瓣膜环形缩窄术有助于PDVI患者临床症状缓解,因此术前明确诊断为PDVI的患者,应行股浅静脉瓣膜环形缩窄手术。
【Abstract】ObjectiveTo explore the effects of RECK gene on the biological behaviors of hepatocellular (HepG2). MethodsThe RECK cDNA was transfected to HepG2 with lipofectamine 2000. Detected its protein expressions with Western blot before and after transfection, analyzed the effects of RECK on MMP-9 activity using gelatin zymography, observed the effects on proliferation ability by MTT assay and plate clone formation assay, compare the changes of invasion ability by cell adhesion assay and in vitro invasion experiment. Results RECK protein was expressed steadily in transfected HepG2 cells and the amount of activated MMP-9 were decreased significantly. Their proliferation abilities weren’t different before and after transfection but their invasion abilities decreased sharply. ConclusionRECK gene can transfect HepG2 cells by liposome efficiently. It can inhibit the activity of MMP-9 and the invasion ability of HepG2.
【Abstract】ObjectiveTo investigate the relationship between the expression of urokinase-type plasminogen activator (uPA) mRNA and breast cancer, lymph node metastasis. MethodsSixty patients with breast tumor were selected randomly and the expression of uPA mRNA was detected with RT-PCR. The patients were divided into benign group (18 cases) and malignant group (42 cases) which included 22 cases with lymph node metastasis and 20 cases without lymph node metastasis. The relationship between uPA mRNA expression and breast cancer, lymph node metastasis was analyzed. ResultsAmong these 18 benign tumors, low expression of uPA mRNA was found in 2 cases and the others were negative. While in 42 cases of malignant tumor, uPA mRNA were positive in 22 cases of lymph node metastasis, 16 of which were high expression, 5 of which were moderate expression, and 1 was low expression. uPA mRNA were positive in 18 of 20 cases of nonmetastatic lymph node, 1 of which was high expression, 5 of which were moderate expression and 12 of which were low expression, the other 2 were negative expression. The expression of uPA mRNA had significant difference between benign and malignant tumors (P＜0.05). The expression in lymph node metastasis was much higher than no lymph node metastasis (P＜0.05). ConclusionThe expression of uPA mRNA in malignant breast cancer is obviously higher than that in benign breast tumor. The expression tensity of uPA is highly relevant to lymph node metastasis in malignant breast cancer, which can provide evidence for clinical staging and therapy.