食管癌患者硒营养状况的评价

以机体硒水平，ＧＳＨ－Ｐｘ，ＳＯＤ的活性，相关的抗癌致癌元素的综合效应比值，食管癌死亡率与硒等元素的多元回归分析及ＭＤＡ的含量等合指标，评价食管癌患者的硒营养状况，结果表明，食管癌患者的营养状况差，表现为：硒水平低、含硒酶ＧＳＧ－Ｐｘ以及抗氧自由基的ＳＯＤ活性差，脂质过氧化加剧；ＭＤＡ含量高将使核酸，蛋白质含等含氨基活性物质产生交联反应而使细胞失活，食管癌患者硒营养状况差，与癌肿的一定相关关系，是     

中晚期食管癌手术方式的探讨—附96例报告

报道１９８９－１９９１年，共手术治疗中晚期食管癌９６例，肿瘤切除率９１．６％，术后并发症发生率１１．４％，无手术死亡。笔者认为胸段食管癌采用经左胸切除，胃经食管床重建食管术有许多优点，值得采用。而残胃食管癌或估计肿瘤切除困难的病人，可采用胸骨后结肠代食管术，再经右胸切除食管。对本组食管癌国际ＴＮＭ分期与淋巴结转移的关系也作了分析探讨。     

MiR-205 inhibits the invasion and migration of esophageal squamous cell carcinoma by modulating SMAD1 expression

Esophageal squamous cell carcinoma （ESCC） is one of the most lethal cancers worldwide. In this study, we aimed to investigate the underlying mechanisms of metastasis inhibition by miR-205 in ESCC. In microRNA （miRNA） array and quantitative RT-PCR analyses, we found that the expression level of miR-205 was significantly lower in patients with lymph node metastasis compared with that in patients without lymph node metastasis. After transfection of miR-205 mimics or inhibitors into ESCC cell lines, a significant negative correlation was observed between the expression level of miR-205 and Smad 1. In luciferase reporter assays, we revealed that miR- 205 inhibited the expression of SMAD1 by targeting the 3＇ untranslated region （3＇-UTR） of SMAD1 mRNA in ESCC cells. Furthermore, our results showed that miR-205 sup- pressed the invasion and migration of ESCC cells, whereas Smadl increased their invasion and migration. Taken together, our study demonstrates that miR-205 functions as a suppressor of tumor metastasis by regulating SMAD1 expression through targeting the 3＇-UTR of SMAD1 mRNAin ESCC. Therefore, miR-205 may be a potential therapeutic target for miRNA-based therapy of ESCC.     

The value of endoscopic ultrasonography on diagnosis and treatment of esophageal hamartoma

Objective： To examine the values of endoscopic ultrasonography （EUS） on diagnosis and treatment of esophageal hamartoma. Methods： We compared and analyzed various kinds of imaging examinations such as barium esophagram, contrast-enhanced computed tomography （CT） and conventional gastroscopy in retrospectively reviewing the clinical data of an esophageal hamartoma patient seen in our clinic in the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. Having received various imaging examinations, this patient was finally diagnosed with esophageal hamartoma and underwent gastroscopic resection of hamartoma with the diagnostic information obtained from EUS. The patient had been regularly followed up for 13 months after treatment. Results： Barium esophagram, CT and conventional gastroscopy detected the lesion, but were unable to distinguish it from common esophagopolypus and other submucosal lesions, and unable to determine etiopathogenisis. EUS detected the hamartoma and identified its internal structure, echo, exact size, depth of invasion, origin and the relationship between adjacent tissues and organs, differentiating the lesion from other submucosal tumors and clearly defining the diagnosis. EUS-guided fine needle aspiration （FNA） also helped to identify the etiological diagnosis. Conclusion： EUS was superior to other imaging means in diagnosis and treatment of hamartoma.     

食管、胃底静脉曲张出血的内科治疗

食管胃底静脉曲张破裂出血 ,以往内科治疗疗效较差 ,近来内科药物及内镜治疗广泛用于临床且简便有效 .综合近年文献 ,综述食管及胃底静脉曲张破裂出血的药物和内镜治疗现状及进展     

食管癌血清免疫球蛋白检测

为了解食管贲门癌患者血清免疫球蛋白含量的水平,我们对100例经病理确诊的食管贲门癌患者血清免疫球蛋白进行检测,同时和健康人组比较,结果表明:患者血清免疫球蛋白IgG、IgA,均比健康人组为低;前者有显著性差异、后者有非常显著性差异,IgM接近健康人组,无显著性差异.因此在食管贲门癌综合治疗时,增强患者免疫功能的措施是必要的.在老年人如细胞免疫和体液免疫功能低下,不但容易引起感染而且可能是癌症的易感者.     

抗癌药物对人食管癌裸鼠移植瘤株的治疗作用

目的　用抗癌药物博莱霉素 (BLMA6 )和顺氯氨铂 (DDP)对人食管鳞癌 (HEC2 )和人食管腺鳞癌 (HEC6 )两种裸鼠移植瘤株进行治疗的研究。方法　用同一种药物对两种不同瘤株进行治疗 ;用不同药物治疗同一种瘤株 ,以此进行药物疗效的比较。结果　BLMA6 对HEC2 和对HEC6 均有显著的抑制作用。DDP对HEC6 有一定的抑制作用 ,而对HEC2 的作用不明显。BLMA6 在显著抑制肿瘤生长的剂量下 ,对内脏无明显损害。结论　对人食管鳞癌和腺鳞癌的治疗BLMA6 优于DDP。     

人食管鳞癌Eca109细胞株中肿瘤干细胞的分离与鉴定

为分离富集人食管鳞癌Eca109细胞株中肿瘤干细胞,并对其"干细胞"特性进行鉴定。采用无血清(DMEM/F12 1∶1,无血清)成球培养法获得细胞球,应用免疫荧光细胞化学技术检测Eca109细胞株中细胞球细胞中干性相关转录因子的表达;平板克隆和MTT法检测细胞体外增殖情况;Transwell小室法检测其细胞侵袭能力。结果显示,无血清培养4 d获得Eca109细胞球;P75NTR和Oct-4荧光定位于细胞球细胞的细胞核上,Eca109细胞为细胞核和细胞浆表达,但是Oct-4荧光强度比P75NTR弱;MTT法测增殖显示细胞细胞球增殖率明显高于Eca109细胞,差异有统计学意义(P0.001);平板克隆实验显示细胞球细胞形成克隆团数高于Eca109细胞;Transwell小室法结果显示细胞球细胞侵袭力高于Eca109细胞。由此可知,食管鳞癌Eca109细胞系通过无血清成球培养法获得细胞球,细胞球存在肿瘤干细胞。     

人食管癌癌旁粘膜培养上皮生长特性的研究

人食管癌癌旁组织12例和正常食管粘膜15例组织块在盖玻上用199培养基培养,并掺入放射性氘胸腺嘧啶核苷.用光镜、显微分光光度计,放射自显影,扫描电镜检查移植块生长上皮层的生长速度,细胞核 DNA 含量,DNA 合成和形态学改变。结果是前三周,癌旁粘膜组织块培养上皮的生长率,细胞 DNA 含量和 DNA 合成高于食管正常粘膜.第四周以后两组上皮出现生长率降低,分化增加现象,在此培养中未能见到癌旁粘膜上皮转化为恶性细胞.本实验正常粘膜的培养,其生长的上皮细胞可以作为食管癌致癌因素研究的模型.     

EC109细胞株细胞周期DNA代谢和形态改变的研究

人食管癌细胞株 EC109以显微分光光度计测定癌细胞核 DNA 含量,以放射自显影测定细胞核摄取~3H-TdR 和扫描电镜检查细胞表面的超微结构.大多数 EC109瘤细胞间期细胞核的 DNA 含量增加,主要干系细胞 DNA 含量为2 C,属 G_1期,也可见低于四倍体(3 C),高于四倍体(>4 C).甚至多倍体(>8 C)的瘤细胞.~3H-TdR 加入培养基10分钟后,许多瘤细胞核有银粒出现(S 期细胞).大量细胞进入细胞周期反映其恶性程度高.扫描电镜可见 EC109在细胞周期不同阶段其细胞大小形状和微绒毛也不同.本文结果说明用细胞核 DAN 含量测定,~3H-TdR 掺入和细胞表面超微结构可测定肿瘤周期.也可用这些方法判定瘤细胞的恶性程度.