具不良生活习惯者胃蛋白酶原C基因多态性的研究

目的通过调查具不良生活习惯如抽烟、喝酒者胃蛋白酶C基因多态性分布情况,研究生活习惯与胃癌病因之间的关系。方法采用PCR检测具不良生活习惯者中胃蛋白酶原C基因的多态性。结果既抽烟又喝酒者52人中,等位基因1出现频率比对照组高且差异有统计学意义(P<0.05)结论既抽烟又喝酒者是胃癌发病的高危险人群。     

胃和大肠管状腺癌细胞的超微结构观察

取成人胃和大肠管状腺癌(Ⅱ级)23例,在透射电镜下进行观察,结果表明胃和大肠腺癌的细胞核超微结构基本相同,细胞游离面微绒毛和胞质分泌颗粒等则有许多不同之处,文中对这些异同表现进行了讨论,认为根据它们各自超微结构特点,可以做为追踪转移癌的依据。     

Expression and significance of cyclin D1, p27kip1 protein in bronchioloalveolar carcinoma

Purpose: To investigate the relationship between expression of cell cycle-related protein cyclin D1, p27kipl and the pathogenesis of bronchioloalveolar carcinoma (BAC) and the value of prediction of prognosis. Methods: Cyclin D 1 and p27kip 1 protein were detected by immunohistochemical En Vision method in 43 BACs. Results: The positivity of cyclin D 1 in BAC was 65.1% (28/43), which was significantly higher than that in normal pulmonary tissue (0/13), P＜0.01. No statistically significant association was found between cyclin D1 expression data and sex, age, tobacco-use history, histologic subtype (mucinous vs nonmucinous), stromal fibrosis, lymph node metastasis, clinical stage or postoperative survival period (P＞0.05), while cyclin D1 expression was found to be negatively correlated with tumor size (P＜0.05). The positivity of p27kipl in BACs was 51.2% (22/43), significantly lower than that in normal pulmonary tissue (12/13), P＜0.01. p27kipl expression level was not associated with sex, age, tobacco-use history, tumor size or histologic subtype (P＞0.05), but was negatively correlated with stromal fibrosis, lymph node metastasis and clinical stage (P＜0.05); and positively associated with postoperative survival period (P＜0.01). The survival rate of p27kipl positive group was significantly higher than that of p27kipl negative group (P＜0.01). No statistically significant correlation was found between cyclin D 1 and p27kipl expression. Conclusions: Increased cyclin D1 expression and decreased p27kip 1 expression are related to the pathogenesis of BAC;decreased p27kipl expression is associated with metastasis progression; immunodetection ofp27kip 1 is useful for assessment of prognosis.     

睾丸肿瘤组织中mdm-2基因表达及临床意义

探讨mdm-2基因与睾丸肿瘤发生及预后的关系．应用免疫组化方法检测27例睾丸肿瘤中mdm-2蛋白表达水平．发现有12例标本mdm-2蛋白阳性表达，并且与睾丸肿瘤的病理分级和临床分期有关，提示睾丸肿瘤恶性程度与mdm-2蛋白表达具有明显相关性．mdm-2蛋白表达可能成为睾丸肿瘤预后的指标。     

Expression and significance of cyclin D1, p27kip1 protein in bronchioloalveolar carcinoma

INTRODUCTION Bronchioloalveolar carcinoma (BAC) is a par-ticular subtype of pulmonary adenocarcinoma de-rived from clara cell and type II pneumocyte. BAC cells grow along and within alveolar spaces while the alveolar framework of the lung is preserved. The incidence of BAC appears to be rising recently. The etiology and pathogenesis of this unique neoplastic disease are still unclear; many studies of oncogene and tumor suppressor gene expression include BAC with all adenocarcinoma o…     

头颈癌患者手术前后T细胞亚群的观察

对３０例头颈癌患者手术前后的Ｔ淋巴细胞亚群变化进行观察，结果表明：头颈患者的ＣＤ＋８较对照组明显升高（Ｐ＜０．０１），ＣＤ＋４／ＣＤ＋８值比健康人显著降低（Ｐ＜０．０１），且有随临床分期增加而ＣＤ＋８升高及ＣＤ＋４／ＣＤ＋８比值下降的趋势，Ⅰ－Ⅱ期与Ⅲ－Ⅳ期相比有显著性差异（Ｐ＜０．０１）；而手术后ＣＤ＋８逐渐下降，ＣＤ＋４／ＣＤ＋８值却较术前有明显回升，术前与术后比较有显著性差异（Ｐ＜０．０１）．说明头颈癌患者存在着明显的细胞免疫功能紊乱，并随病情的发展而加重；而彻底切除肿瘤是迅速恢复机体细胞免疫功能的有效手段．提示：Ｔ淋巴细胞亚群检测对头颈癌患者的病情发展、免疫功能评定及疗效观察具有一定参考价值     

冬葵杀虫活性初步研究

锦葵科植物冬葵Malva verticillata L是一种分布很广的两年生草本植物,自古作为治疗多种疾病的医药使用,而其农用活性却很少有人研究。粘虫（Mythimna separata）是我国农作物主要害虫之一,该虫的防治工作也倍受人们关注。本研究选取从冬葵萃取物为供试材料,分别测试了其不同萃取物对粘虫幼虫的胃毒作用,结果表明冬葵萃取物对粘虫有一定的胃毒活性。     

跳远腾空技术中"挺腹"动作的剖析

在挺身式跳远腾空技术的教学中,学生经常会出现“挺腹”的错误动作,在分析产生该错误动作的原因基础上,阐述了“挺腹”动作对教学所造成的危害,并提出了一种经实践检验效果良好的纠正方法。     

金属硫蛋白在胃癌中的表达及意义

目的:观察金属硫蛋白(metallothionein,MT)在胃癌中的表达状况.方法:对66例病人的癌组织标本采用SP免疫组织化学方法染色,观察MT的表达状况.结果:MT在胃癌中的表达总阳性率为54.5%(36/66),MT在胃癌中表达与癌组织分化程度相关性不明显;与侵犯深度呈正相关.结论:MT在胃癌中有较高表达,检测MT对制定化疗方案中有指导意义.     

斑蝥素对粘虫胃毒机理的初步研究

斑蝥素(Cantharitin,C10H12O4)是广泛存在于芫菁类昆虫体内的一种昆虫毒素,对害虫具有毒杀活性,但其作用机理不明。本试验通过症状、组织学观察,研究斑蝥素对中肠的影响,已取得如下结果:1、斑蝥素对粘虫具有较强的胃毒活性。粘虫的胃毒症状表现复与斑蝥素的浓度关系密切。2、斑蝥素对粘虫中肠组织的影响:斑蝥素胃毒处理粘虫后,中毒试虫的中肠细胞被破坏,致使粘虫死亡。