Vimentin significantly promoted gallbladder carcinoma metastasis

Background  The precise molecular mechanisms underlying the gallbladder carcinoma (GBC) metastasis has not been fully elucidated.

Methods  In the present study, metastasis-associated proteins were identified by comparative proteomic analysis. The functional study of the candidate protein vimentin was further investigated. First, a pair of higher and lower metastatic sublines (termed GBC-SD/M3 and GBC-SD, respectively), originated from the same parental cell line, was screened by spontaneous tumorigenicity and metastasis in vivo in animal study and further characterized by metastatic phenotypes analysis in vitro. Subsequently, a proteomic approach comprised two-dimensional gel electrophoresis analysis and mass spectroscopy was used to identify and compare the protein expression patterns between higher metastatic GBC-SD/M3 and lower metastatic GBC-SD cell lines. Then twenty-six proteins were identified.

Results  Among the 26 proteins identified, fourteen proteins were up-regulated and 12 proteins were down-regulated in GBC-SD/M3. Vimentin was identified and found to be overexpressed in GBC-SD/M3 as compared with GBC-SD. This result was further confirmed by quantitative PCR and Western blotting analysis. Furthermore, the cell migration and invasion potency of GBC-SD/M3 in vitro was remarkably suppressed after small interference RNA-mediated knockdown of vimentin. Moreover, immunoblot and immunohistochemical analysis on 12 human GBC specimens showed consistently increased vimentin expression in metastases compared with primary tumors.

Conclusion  Tumor vimentin level may reflect the pathological progression in some GBC and may be a useful marker for predicting tumor metastasis and a therapeutic target for the treatment of GBC patients with metastases.

     

胃癌侵及胰头部的外科处理研究

胃癌是我国常见的恶性肿瘤之一,进展期胃癌患者占多数。进展期胃癌侵犯胰头部的病例并非罕见,对此类患者的外科处理目前仍存在争议。本研究对65例行手术治疗的胃癌侵犯胰头部患者的临床资料进行分析,以探讨胃     

腹腔镜胆囊切除术治疗早期急性胆囊炎的病例对照研究

目的 :探讨早期急性胆囊炎行腹腔镜胆囊切除术(laparoscopic cholecystectomy,LC)的安全性和有效性。方法:采用1∶1配对方法,研究2014年1月至2015年5月因早期急性胆囊炎行LC和因非急性发作胆囊炎行择期LC的病人各100例,比较两组术后并发症的发生情况。结果 :本研究男101例,女99例,平均年龄(56.5±14.3)(20~86)岁。急诊LC组在平均手术时间(64.6±10.0)min和术后平均住院天数(6.9±3.0)d较择期LC组[(49.7±13.4)min,(4.8±1.1)d]明显长(P0.05),未发生中转开腹、脏器损伤、腹腔内感染或出血,无一例死亡。结论 :早期急性胆囊炎行LC是安全和有效的治疗方法,只要合理选择病人,其并发症的发生率并不高于非急性发作胆囊炎的择期LC。     

急性肠系膜缺血性疾病22例诊治分析

<正>急性肠系膜缺血性疾病(acute mesenteric ischemia,AMI)是临床上十分危急、凶险的急腹症,可在短期内导致病人死亡。尽管近年来外科诊治水平发展很快,但对该病的治疗仍     

Mirizzi综合征26例诊治分析

目的：探讨Mirizzi综合征的诊断与治疗方法。方法：回顾总结分析26例Mirizzi综合征患者的临床资料。结果：26例患者均采用手术治疗,手术方式为胆囊大部切除、胆囊切除、胆囊切除加胆总管或肝总管探查或胆肠内引流术。术中右肝管损伤l例,肝总管损伤1例,均行损伤胆管修补加胆总管T管引流术。所有患者均痊愈出院。结论：Mirizzi综合征术前诊断较困难,手术治疗应依据不同的病理类型选择最合理的术式。