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 探讨上皮细胞钙黏蛋白（E-Cadherin）、尿激酶型纤溶酶原激活剂（uPA）表达与乳腺癌的浸润、淋巴结转移的关系。 方法 采用免疫组织化学链霉菌抗生物素蛋白-过氧化物酶连接法对乳腺纤维腺瘤、乳腺腺病和乳腺癌各40例蜡块中E-Cadherin、uPA表达进行研究。 结果 乳腺纤维腺瘤、腺病和乳腺癌中E-Cadherin阳性率分别为85.0%、82.5%和20.0%，三者差异有统计学意义（P＜0.05）；E-Cadherin表达阴性患者淋巴结转移率（90.6%）高于E-Cadherin表达阳性者（25.0%），差异有统计学意义（P＜0.01）。uPA在乳腺纤维腺瘤、腺病均呈阴性表达，在乳腺癌中的阳性率为60.0%，三者差异有统计学意义（P＜0.05）；uPA表达阳性患者淋巴结转移率（88.5%）显著高于阴性者（50.0%），两者的表达差异有统计学意义（P＜0.05）。 结论 E-Cadherin和uPA的表达与乳腺癌的浸润转移密切相关，同步检测其在乳腺癌组织中的表达并综合分析二者之间的关系，对评价乳腺癌细胞的侵袭转移能力及预后判断具有一定价值。uPA在乳腺癌中表达率较高，而且和乳腺癌的生物学特性有关，它对提示预后和开展靶向治疗有指导意义。
Objective Investigate the effect and treatment prospects of urokinase-type plasminogen activator receptor（uPAR）in human epidermal growth factor receptor-2 （HER-2） positive breast cancer. Method Aricals related effect of uPAR in HER-2 positive breast caner were retrieved through Pubmed， and the role of uPAR was reviewed. Results uPAR played a very important role in the HER-2 positive breast cancer， anti-uPAR monomer or uPAR binding inhibitors could inhibit the growth， invasion and metastasis of breast cancer cells. Conclusion uPAR is one of the effective target for breast cancer， and it provides a new breakthrough in the treatment of HER-2 positive breast cancer.
【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.
ObjectiveTo study the expression of urokinase-type plasminogenactivator (uPA) and phosphorylation of glycogen synthase kinase-3β (P-GSK3β) in human colorectal adenocarcinoma and its significance. MethodsSeventy-eight samples of colorectal adenocarcinoma got during operation between January 2006 and December 2010 in Handan Central Hospital were chosen as the study subjects. The immunohistochemical SP method was used to detect uPA and P-GSK3β levels in the 78 cases of colorectal adenocarcinoma, 20 cases of normal colorectal mucosa and 30 cases of colorectal adenoma. ResultsThe positive expression rates of uPA and P-GSK3β in colorectal carcinoma were much higher than those in colorectal mucosa, colorectal polyps, and colorectal adenoma (P<0.05). The expressions of uPA and P-GSK3β were closely correlated with the differentiation, TNM and lymph nodes metastasis (P<0.05). ConclusionThe expression of uPA and P-GSK3β is closely related to the colorectal adenocarcinoma occurrence. Both of them are important biological markers in colorectal adenocarcinoma occurrence and development.