上皮型钙粘蛋白与大肠癌临床病理因素的关系

目的探讨上皮型钙粘蛋白（Ｅ一ｃａｄｈｅｒｉｎ,Ｅ－ＣＤ）在大肠癌中的表达与其临床病理因素的关系。方法采用免疫组织化学的方法研究大肠癌组织标本Ｅ－ＣＤ的表达情况。结果Ｅ－ＣＤ在正常大肠粘膜上皮组织均保留表达;而在大肠癌标本中的保留表达率为６６.７％ （７０／１０５）。结论与其它肿瘤相比较,Ｅ－ＣＤ在大肠癌中的减弱表达率较低,但是Ｅ－ＣＤ的减弱表达与大肠癌患者的年龄、病理组织学分化程度、临床Ｄｕｋｅｓ分期有显著的相关性,可以作为肿瘤预后的一个指标。     

THE HUMORAL ANTITUMOR RESPONSES INDUCED BY IL-4 GENE-MODIFIED TUMOR VACCINE

ＴＨＥＨＵＭＯＲＡＬＡＮＴＩＴＵＭＯＲＲＥＳＰＯＮＳＥＳＩＮＤＵＣＥＤＢＹＩＬ４ＧＥＮＥＭＯＤＩＦＩＥＤＴＵＭＯＲＶＡＣＣＩＮＥ１ＹｕＹｉｚｈｉ于益芝ＣａｏＸｕｅｔａｏ２曹雪涛ＺｈａｎｇＭｉｎｇｈｕｉ张明徽ＬｅｉＨｏｎｇ雷虹ＴａｏＱｕｎ陶群Ｄｅｐ...     

利用粘附式细胞仪测定培养巨噬细胞内pH值

用ｐＨ值敏感荧光探针Ｓｎａｆｌｃａｌｃｅｉｎ－ＡＭ标记体外培养４８小时的小鼠腹腔巨噬细胞，５７０型粘附式细胞仪观察巨噬细胞在对刀豆素Ａ进行受体介导内吞过程中细胞内ｐＨ值的变化。结果显示，开始内吞后细胞内ｐＨ值即降低，内吞进行到第５分钟细胞内ｐＨ值降到最低，在此后的６分钟内均维持于这一较低水平。本法灵敏度高，简便快捷，适用范围广，可无损伤观察活细胞或细胞器ｐＨ值的变化。     

HP感染与c—myc,c—erbB—2蛋白在胃粘膜病变中的表达

为了探讨幽门螺旋杆菌（HeliclbacterPylori，HP）感染与胃癌发生间的关系，我们采用免疫组化法对158例胃粘膜标本进行癌基因c－myc、c－erbB－2蛋白检测、其中胃癌、不典型增生及肠上皮化生各40例，正常对照38例。结果发现，c－myc蛋白在正常胃组织中无表过，c－erbB－2蛋白阳性表达7／38例。两种基因蛋白在不典型增生、肠上皮化生及胃癌中的阳性表达显著高于对照组（P＜0．01～0．05）。应用Giemsa法对上述各组胃粘膜同步进行HP测定，发现正常对照组中的HP阳性检出显著低于不典型增生及肠上皮化生（P＜0．025），而与胃癌组无明显统计学差异（P＞0．05）。联合检测HP与癌基因蛋白发现HP感染与其表达呈正相关。提示HP感染与胃癌发生有一定关系。     

浅析开展护理高等职业教育的必要性

根据江泽民同志的"教育要全面适应社会主义现代化对各类人才的需要 ,全面提高教育质量和办学效益"的指示精神 ,积极开展护理学高等教育以适应医学和护理学的飞速发展。近几年来 ,我国的护理教育经过结构调整 ,已形成本科、大专、中专三个层次 ,但是中专教育仍占较大的比例。随着现代护理学的发展 ,中专教育的知识结构和业务能力已难以适应新的岗位。开展护理高等职业教育 ,按照现代护理岗位或岗位职务群对人才素质的需要 ,规划教育全过程 ,为社会培养高素质、强能力的护理人才。同时为目前在岗的数以千万计的接受过中专或中等职业教育的护理人员提供继续教育的机会     

一种新的胸腺素α原cDNA

我们克隆了有中国人特征的胸腺素α原全长ｃＤＮＡ,并进行测度分析。方法从健康中心人ＰＢＭＣＰｏｌｙ（Ａ）＾＋ＲＮＡ中采用ＲＴ－ＰＣＲ法克隆ｈｕＰＴＭＡαｃＤＮＡ,酶切鉴定,序列分析,结果经测序后发现该基因是一个国外的高加索人种胸腺素α原有８６．４％,同源性的新基因。结论从中国人中新发现了一个ｈｕＰＴＭＡα基因,并于日前被美国ＮＣＢＩ（ＮａｔｉｏｎａｌＣｅｎｔｅｒ ｏｆ ｂＩＯＴＥＣＨＮＯＬＯＧＹｉＮ     

The therapeutic effect of intratumoral injection of GM-CSF gene-modified allogenic macrophages on tumor-bearing mice

Both the antigen presenting ability and the cytotoxicity of macrophages can be enhanced by GM-CSF gene transfer. In the present study, the therapeutic effect of intratumoral injection with GM-CSF gene-modified allogenic macrophages on tumor-bearing mice observed. The peritoneal macrophages of C57BL/6 mice were transfected with GM-CSF gene mediated by recombinant adenovirus and the subcutaneous CT26 colon adeno-carcinoma-bearing BALB/c mice were treated by intratumoral injection of the above macrophages. The survival time of the tumor-bearing mice were prolonged significantly and some tumor mass disappeared completely. The necroses of the tumor cells and massive infiltration of inflammatory cells were observed 6 days after treatment 30 days after treatment, only the leftover of tumor cells and the inflammatory cells remained. The data indicated that introtumoral injection of GM-CSF gene-modified allogenic macrophages displayed more potent therapeutic effect on the preestablished tumor-bearing mice. Supported by National High Biotechnology Foundation (Z20-01-03). This is one of papers of the special issue on gene therapy research (Chin J Cancer Res Vol. 9 No. 4 December, 1997).     

P53 fusion protein expression in prokaryote and preparation of monoclonal antibody to P53

Objective: Conventional immunohistochemistry (IHC) is available to assess P⁵³ mutations, and expensive imported anti-P⁵³ monoclonal antibody has been used in China, it is necessary to study a new monoclonal antibody. Methods: The P⁵³ DNA fragment enconding N-terminal 180 amiao acide was obtained by PCR and was cloned into P^GEX-2T plasmid expressing glutathione S-transferase (GST). The P⁵³-GST fusion protein expressed by JM109 was used for immunizing BALB/C mice. We have raised one hybridoma strain secreting McAb to human P⁵³ (named M126). Results: The IHC analysis of 52 paraffin-embedded sections from human breast cancer with M126 and P_AB1801 (Zymed Co.) has showed that the positive immunoreactions were 25 cases (48%) and 22 cases (42.3%) respectively. The staining of M126 was stronger and preferable to P_AB1801. Conclusion: M126 can be instead of P_AB1801 for studying immunohistochemical analysis on P⁵³ protein.     

动脉化疗在中晚期膀胱癌治疗中应用的初步报告

自1996年1月至今，我科为12例晚期膀胱癌患者施行了髂内动脉灌注化疗。结果：1例T4期降至T2期后给予膀胱部分切除；7例经手术＋动脉化疗，2年复查未发现复发现象；4例带瘤生存，病灶无进展。动脉化疗毒性反应较轻，疗效是肯定的，为中晚期膀胱癌开辟了一条新的治疗途径。