节点文献
巢式SCCA RT-PCR检测食管癌外周血微转移及其临床意义
Detection of Micrometastasis by Nested RT-PCR in Peripheral Blood from the Patients with Esophageal Squamous Cell Carcinoma and Its Clinical Significances
【作者】 郭涛;
【导师】 王立东;
【作者基本信息】 郑州大学 , 内科学, 2006, 硕士
【摘要】 研究背景 食管癌(esophageal squamous carcinoma,SCC)是世界上最常见的六大恶性肿瘤之一,河南省林州市(原林县)及其毗邻的辉县等地是中国,也是世界上发病率和死亡率最高的地区。由于缺乏敏感、特异的早期诊断和生物防治的指标和方法,临床上首次确诊的EC患者80%以上均为中、晚期,其5年生存率仅为10%左右,预后极差,而细胞的侵袭和转移是食管癌复发并导致患者死亡的主要原因。目前,组织分化程度和TNM分期是临床医师判断食管癌患者预后的主要指标。但是,临床上经常发现肿瘤组织分化程度或TNM分期与预后不一致的病例,比如:组织分化程度较高的患者预后并不比分化差的患者好,同一分期的患者预后可能明显不同,提示单纯从形态的改变判断患者预后,存在一定的局限性。转移和复发是影响恶性肿瘤患者预后的重要因素,而肿瘤细胞在淋巴结、外周血、骨髓和腹腔中的微转移是肿瘤转移和复发的基础。肿瘤微转移的检测不仅对判断恶性肿瘤患者复发和预后有重要意义,而且对指导临床的个体化治疗亦有重要价值,因此,如果能在分子水平上探索食管癌侵袭转移相关基因在外周血中的变化,寻找敏感、特异的预后指标,具有重要的理论意义和临床应用价值。目前临床上缺乏敏感、特异的早期检测食管癌复发和转移的指标。近年研究提示,鳞状细胞
【Abstract】 BackgroundEsophageal squamous carcinoma (SCC) is one of the six most common malignant diseases in the world. Linzhou city (formerly Linxian) and nearby counties in Henan province has been well recognized as the highest incidence and mortality areas for SCC in the world. 80% of the SCC patient at the first clinical diagnosis are at advanced stage and have a very poor prognosis, five-year survival rate is only about 10%. The recurrence and death incurred by SCC are ascribed to infiltration, invasion and metastasis of SCC. At present, the clinical stage based on TNM classification and histopathological grade are still used to evaluate the prognosis of SCC patients. However, it has been well recognized that there is discordance between the aforementioned classification and the actual prognosis. For example, the SCC patients with well differentiation may have a worse prognosis than those with poor differentiation, indicating the limitation of these markers in evaluating SCC
【Key words】 esophageal squamous carcinoma; SCCA mRNA; Micrometastases; Nested reverse transcriptase polymerase chain reaction; Peripheral blood;
- 【网络出版投稿人】 郑州大学 【网络出版年期】2006年 11期
- 【分类号】R735.1
- 【下载频次】112