The expression of β-adrenoceptors in human pancreatic cancer cell lines and their roles in cell invasiveness

Objective To investigate the effect and mechanism of β-adrenoceptors on norepi-nephrine-induced invasiveness of pancreatic cancer cell lines. Methods The expression of β-adrenocep-tors mRNA in human pancreatic cancer cell lines MiaPaCa-2 and BxPC3 was detected by using RT-PCR. The cells were randomly divided into control group.10 mol/L NE intervention group, 1 mol/L propranolol intervention group and NE + propranolol intervention group. After 48 h , transwell invasiveness test was used to examine the changes in invasive ability of MiaPaCa-2. The expression of MMP-2, MMP-9 and VEGF mRNA was measured by semi-quantitative RT-PCR. The levels of MMP-2 , MMP-9 and VECF proteins were assayed by immunocytochemistry. Results Both MiaPaCa-2 and BxPC3 expressed β1-and β2-adrenocep-tors. The absorbance ( A) values of invasive cells in NE, NE + propranolol, propranolol and control groups were 0.78±0.02 ,0.32±0.03 ,0.26±0.01 and 0.28±0.02 , respectively, and those in NE intervention group were significantly higher than in control and NE + propranolol groups ( P <0.05) . There was no sig-nificant difference in the number of invasive cells between propranolol and control groups ( P > 0. 05) . In NE group , the expression index of MMP-2 , MMP-9 and VEGF mRNA was 0. 87±0.02 , 1.04±0.02 and 0. 92±0. 01 , and the gray value of the protein expression was 131.20±2.34,105.32±7.21 and 115.60 ±5. 03 , respectively, which were higher than those in control and NE + propranolol groups ( P<0.05). There was no significant difference in the expression levels of MMP-2 , MMP-9 and VEGF mRNA and pro-tein between propranolol and control groups ( P>0.05 ) . Conclusion β-adrenoceptors play an important role in the process of norepinephrine-induced invasiveness of pancreatic cancer cells. NE can promote the invasiveness of MiaPaCa-2 through up-regulating the expression of MMP-2 , MMP-9 and VEGF via β-adre-noceptors.     

胆道及胰腺手术后发生急性胰腺炎临床分析

目的 结合既往有胆道、胰腺手术史的急性胰腺炎发作的临床资料，分析、评价手术与急性胰腺炎发生的相关性及其临床表现等特点。方法 收集、整理2003.1-2006.3西安交通大学医学院第一医院348例急性胰腺炎病历资料。全部资料符合急性胰腺炎诊断标准﹙1996年中华医学会外科分会胰腺组制定二次方案﹚。根据研究要求，整理伴有胆道，胰腺手术史的病例67例，结合资料从手术方式、手术与发病间歇、住院天数、Balthazar CT分级、Ranson入院48小时评分，进行分析、总结。所有结果采用x±SD,SPSS13.0软件分析。结果 曾有胆道胰腺手术史的急性胰腺炎发作，与胆总管结石、胆泥沉积，奥狄氏括约肌功能、奥狄氏括约狭窄有关；腹腔镜胆囊切除术( laparoscopy cholecystectomy LC)与开腹胆囊切除术后（open cholecystectomy OC）胰腺炎在住院天数、术后距急性胰腺炎发作间隔无统计学意义。所有病例系痊愈出院。58例随访，无胰腺炎再次发作。 结论 伴有胆道、胰腺手术史的胰腺炎急性发作，在治疗上仍以支持，对症为主，但要重视病因诊治，在病情平稳后进行ERCP﹙endoscopic retrograde cholangiopancreatography﹚检查，重点观察胰管，胆总管下端及奥迪氏括约肌功能，减少并控制胰腺炎复发可能性，提高生活质量     

原发性腹膜后肿瘤的外科治疗101例临床分析

目的：探讨原发性腹膜后肿瘤的外科治疗。方法：回顾性分析1992年以来原发性腹膜后肿瘤手术切除101例，总结提高手术治疗效果的策略。结果：101例患者中良性肿瘤38例，恶性肿瘤63例，均经术后病理证实。肿瘤完整切除率71．29％。良性肿瘤的手术完整切除率高于恶性肿瘤，术中失血少，需要合并切除的脏器少，术后复发率相对低。全部病人无一例术中死亡。术中复发33例，再次手术19例。结论：手术完整切除是腹膜后肿瘤治疗首选的方法，术前准备非常重要，对复发的肿瘤应该争取再次手术。     

Survivin基因在急性胰腺炎中的表达及其意义

目的 探讨survivin基因在鼠急性胰腺炎中的表达及其意义.方法 采用胰胆管逆行穿刺注射牛磺胆酸钠建立不同炎症程度的急性胰腺炎模型,应用免疫组化、Western blot及RT-PCR等方法检测survivin基因在胰腺组织中的表达,TUNEL法检测胰腺泡细胞凋亡的变化.结果 正常胰腺组织无survivin的表达;建立急性胰腺炎模型后,随胰腺炎症程度的加重,Survivin蛋白和mRNA的表达水平逐渐升高,而腺泡细胞凋亡率则逐渐下降.结论 Survivin蛋白不仅通过其抗雕亡作用参与了急性胰腺炎时胰腺腺泡细胞凋亡的调节,而且通过其抗凋亡作用使受炎症损伤的胰腺细胞由凋亡转为坏死,从而加重急性胰腺炎病情,可能是预测急性胰腺炎严重程度的一个重要指标.     

原发性下肢深静脉瓣膜功能不全误诊分析

下肢静脉疾病是外科的常见病和多发病 ,其中原发性下肢深静脉瓣膜功能不全 (PDVI)最多见。由于PDVI与单纯性下肢静脉曲张的临床表现基本相同 ,都是以下肢浅静脉曲张为主要表现 ,所以极易误诊误治。1　临床资料1.1　一般资料　本组 6 5例 (73条患肢 ) ,其中男 4 1例 ,女 2 4例 ,年龄 2 0～ 6 9岁 ,平均年龄 4 4岁。左下肢 33例 ,右下肢 2 4例 ,双下肢 8例 (占 2 2 %) ,左右比例为 1.2 8∶1。1.2　临床表现　病史 0 .5～ 30 0年 ,平均 6 .9年。主要症状 :浅静脉曲张 6 5例 (10 0 %) ,肿胀、乏力和酸胀感 5 8例 (89%) ,足靴区皮肤色素沉…     

Fas/FasL介导的caspase-3活化与急性胰腺炎腺泡细胞凋亡的关系

目的： 研究凋亡调控基因及蛋白Fas、FasL和caspase-3在大鼠急性胰腺炎（AP）组织中的表达及其相互关系。方法：经胰胆管逆行注射不同浓度的牛磺胆酸钠建立不同炎症程度的AP模型,采用RT-PCR、Western blotting技术检测大鼠胰腺炎组织Fas、FasL和caspase-3蛋白及mRNA的表达, TUNEL法检测胰腺炎组织腺泡细胞凋亡。结果：在正常胰腺组织内即可见Fas、FasL、caspase-3蛋白和mRNA的表达;建立AP模型后,随胰腺炎症程度的加重,Fas、FasL、caspase-3蛋白和mRNA的表达逐渐下降,腺泡细胞凋亡率亦逐渐下降,且caspase-3 表达水平在各个组间的变化趋势与Fas/FasL系统的变化趋势相一致。结论：Fas/FasL系统介导的凋亡途径参与了急性胰腺炎腺泡细胞凋亡的调节。     

重症急性胰腺炎治疗的现状和展望

重症急性胰腺炎以发病急、进展快、死亡率高所著称。自Fitz提出手术治疗的观点以后,各家开展了以胰腺坏死清除、腹腔引流为主的重症急性胰腺炎治疗。但由于对手术目的认识上的不清楚、手术方式的落后．手术治疗未能取得令人的疗效。这促使大家重新对胰腺炎治疗方法的选择、手术治疗的时间、指征、方法等问题进行反思。在1963年召开的马赛会议上,重点围绕胰腺炎的分类等问题进行讨论。以后,     

胆肠内引流术防返流问题的探讨

自 18 8 2年 Winiwarter首次[1 ] 报道用胆囊空肠吻合术治疗胆总管梗阻以来 ,10 0多年来胆肠内引流的术式和径路已有了较大的发展 ,但至今尚无一种理想的术式。胆肠内引流术后由于失去了胆道出口处的括约肌功能 ,不可避免地要发生肠胆返流 ,严重者可引起返流性胆管炎反复发作 ,需再次手术治疗。胆肠内引流术后返流性胆管炎的发生率各家报道不一 ,这可能与原发病变的复杂程度及狭窄是否解除、病灶是否切除及结石取净程度等技术因素有关。因此评价各种胆肠内引流术的远期效果 ,尚难以简单地横向对比 ,需结合病情全面考虑。但不论返流发生率的…     

miR-125a和miR-206在乳腺癌中的表达及临床意义

目的:探讨miR-125a和miR-206在乳腺癌中的表达及临床意义.方法:应用Real-time PCR检测35例乳腺癌组织及其癌旁乳腺组织中miR-125a和miR-206的表达,用免疫组化检查乳腺癌中雌激素受体(ER)和孕激素受体(PR)的表达,荧光原位杂交技术检测人类表皮生长因子受体2(HER-2)和DNA拓扑异构酶2A(TOP2A)表达;分析miR-125a和miR-206与乳腺癌患者年龄、月经、淋巴结状态、HER-2、TOP 2A、ER、PR的表达等临床病理特征的相关性.结果:miR-125a和miR-206在乳腺癌组织中的表达水平显著低于癌旁组织,miR-125a高表达与淋巴结阴性、HER-2阴性、TOP 2A阴性具有相关性(P＜0.05),与乳腺癌患者肿瘤大小、年龄、月经状态、ER、PR无相关性.miR-206的高表达与较小的肿瘤体积、ER阴性、PR阴性、HER-2阴性具有相关性(P＜0.05),与乳腺癌患者年龄、月经、淋巴结状态及TOP 2A的表达程度无关.结论:miR-125a和miR-206在乳腺癌发生发展过程中可能发挥重要作用,对指导HER-2阳性和三阴性乳腺癌的治疗有重要临床意义.     

The expression of β-adrenoceptors in human pancreatic cancer cell lines and their roles in cell invasiveness

Objective To investigate the effect and mechanism of β-adrenoceptors on norepi-nephrine-induced invasiveness of pancreatic cancer cell lines. Methods The expression of β-adrenocep-tors mRNA in human pancreatic cancer cell lines MiaPaCa-2 and BxPC3 was detected by using RT-PCR. The cells were randomly divided into control group.10 mol/L NE intervention group, 1 mol/L propranolol intervention group and NE + propranolol intervention group. After 48 h , transwell invasiveness test was used to examine the changes in invasive ability of MiaPaCa-2. The expression of MMP-2, MMP-9 and VEGF mRNA was measured by semi-quantitative RT-PCR. The levels of MMP-2 , MMP-9 and VECF proteins were assayed by immunocytochemistry. Results Both MiaPaCa-2 and BxPC3 expressed β1-and β2-adrenocep-tors. The absorbance ( A) values of invasive cells in NE, NE + propranolol, propranolol and control groups were 0.78±0.02 ,0.32±0.03 ,0.26±0.01 and 0.28±0.02 , respectively, and those in NE intervention group were significantly higher than in control and NE + propranolol groups ( P <0.05) . There was no sig-nificant difference in the number of invasive cells between propranolol and control groups ( P > 0. 05) . In NE group , the expression index of MMP-2 , MMP-9 and VEGF mRNA was 0. 87±0.02 , 1.04±0.02 and 0. 92±0. 01 , and the gray value of the protein expression was 131.20±2.34,105.32±7.21 and 115.60 ±5. 03 , respectively, which were higher than those in control and NE + propranolol groups ( P<0.05). There was no significant difference in the expression levels of MMP-2 , MMP-9 and VEGF mRNA and pro-tein between propranolol and control groups ( P>0.05 ) . Conclusion β-adrenoceptors play an important role in the process of norepinephrine-induced invasiveness of pancreatic cancer cells. NE can promote the invasiveness of MiaPaCa-2 through up-regulating the expression of MMP-2 , MMP-9 and VEGF via β-adre-noceptors.