Survivin和Bcl-2在尖锐湿疣中的表达

目的:测定survivin和Bcl-2在尖锐湿疣(CA)组织中的表达并探讨两者表达的关系。方法:应用免疫组织化学链霉菌抗生物素蛋白过氧化物酶方法(SP法)分别检测60例CA组织及10例正常包皮组织中survivin、Bcl-2基因的表达。在镜下观察切片并计算阳性细胞百分比。结果:CA组织中survivin的表达率为86.67%,显著高于正常包皮的表达率20%(P<0.01)。其中棘层的表达率85.00%显著高于基底层的表达率70.00%和颗粒层的表达率66.67%(P<0.05),基底层与颗粒层的表达率之间无显著性差异(P>0.05)。Bcl-2在CA的表达率为66.67%,正常包皮组织中未见Bcl-2蛋白表达。survivin在CA中的表达与Bcl-2呈正相关(P<0.01)。结论:本实验检测出survivin基因在CA组织中有异常表达,提示survivin蛋白引起的细胞凋亡抑制在CA的发生中起到重要的作用。survivin与Bcl-2在CA的发生发展过程中起到协同作用。     

IDEC-131 (Anti-CD154), Sirolimus and Donor-Specific Transfusion Facilitate Operational Tolerance in Non-Human Primates

CD154-specific antibody therapy prevents allograft rejection in many experimental transplant models. However, initial clinical transplant trials with anti-CD154 have been disappointing suggesting the need for as of yet undetermined adjuvant therapy. In rodents, donor antigen (e.g., a donor blood transfusion), or mTOR inhibition (e.g., sirolimus), enhances anti-CD154's efficacy. We performed renal transplants in major histocompatibility complex-(MHC) mismatched rhesus monkeys and treated recipients with combinations of the CD154-specific antibody IDEC-131, and/or sirolimus, and/or a pre-transplant donor-specific transfusion (DST). Therapy was withdrawn after 3 months. Triple therapy prevented rejection during therapy in all animals and led to operational tolerance in three of five animals including donor-specific skin graft acceptance in the two animals tested. IDEC-131, sirolimus and DST are highly effective in preventing renal allograft rejection in primates. This apparently clinically applicable regimen is promising for human renal transplant trials.     

Study on hemostatic mechanism of fully soluble hemostatic fiber.

Fully soluble hemostatic fiber (FHF) is made from cotton yarn through a series of chemical reactions with NaOH and chloroacetic acid. The major component of FHF is carboxymethylcellulose. FHF is a kind of biodegradation macromolecule material that can disassociate into a low-molecular-weight compound or a simple substance by hydrolytic and enzymatic courses. The purpose of the present study is to investigate the hemostatic mechanism of FHF. The study indicated that FHF can stop bleeding by physical, chemical and physiological routes. In the physical route, expansion of carboxymethylcellulose in FHF stops bleeding by forming a mechanical clog after contacting with the blood. In the chemical route, the platelets can quickly aggregate around FHF and stimulate releasing and disaggregating reactions, after contacting with the rough surface of FHF, producing thrombus and hemostasis. In the physiological route, gluey particles with negative charges can activate intrinsic coagulation systems by activating the blood coagulation factor XII after FHF dissolution.     

江苏口岸媒介生物监测结果分析

[目的] 加强对输入性医学媒介生物预警应急工作,防止媒介传入,保障我国人民身体健康.[方法] 对江苏口岸2002～2005年上半年输入性媒介生物截获情况进行统计分析.[结果] 2002～2005年上半年江苏口岸输入性媒介生物疫情截获率逐年上升.[结论] 传染病传播媒介生物的监测、病原携带检测和传入性风险分析,将作为世界卫生组织评估“监测技术水平、预警反应能力和处置实力”的重要指标之一,成为各成员国关注的焦点,同时也将成为各成员国间设置贸易技术壁垒的重要手段之一.因此,加强传染病传播媒介生物监测和控制工作势在必行.     

Sputum drainage by ultrasonic nebulization and the diagnosis of pulmonary carcinoma]

From June 1984 to June 1989, the sputum drain age by ultrasonic nebulization was done in 1155 cases of suspected lung cancer. From 286 positive cases, 157 (54.9%) were confirmed to be pulmonary cancer histologically. The general cytological and histological identification coincidence rate is 86%.     

磁共振成像对颅内脑膜瘤水肿分析

目的：探讨脑膜瘤周围脑水肿的程度和肿瘤的生长部位．质地．组织学亚型的相关性．研究其瘤周水肿的形成原因．材料和方法：使用经手术和病理证实的65例脑膜瘤MRI和临床病理资料．观察分析脑膜瘤的瘤周水肿的程度．肿瘤的质地，组织学亚型等．结果：发生于大脑颅盖部或／和有矢状窦受累的脑膜瘤有明显的脑水肿．而发生于其它部位(颅底，丘脑、小脑、脑池等)无或只有轻度脑水肿．结论：轻度脑水肿主要是脑膜瘤对脑组织的直接压迫，而中，重度脑水肿主要是脑膜瘤对大脑表面引流静脉尤其是矢状窦的压迫或阻塞．脑水肿和肿瘤的发生部位有关，面和肿瘤的质地、组织学亚型无关．     

D1期前列腺癌的诊断

１９９０年１２月至１９９３年１２月，我们对临床Ａ－Ｃ期２７例病人进行盆腔淋巴结活检术，检出１２例Ｄ１期病人。临床Ａ期有５０％，Ｂ期有３７％，Ｃ期有７１％的病人发现盆腔淋巴结癌转移，其癌细胞的恶性程度也与淋巴结癌转移有关。近年，经腹腔镜盆腔淋巴结活检已成为诊断Ｄ１期前列腺癌的新方法。     

大鼠气管上皮细胞体内—体外转化模型的研究

本研究建立了大鼠气管上皮细胞体内－体外转化模型，大鼠气管内滴注苯并芘，三天后处死大鼠，消化气管上皮细胞，接种于无血清完全培养基。细胞形成集落后，换为选择培养基继续培养五周，统计转化率。结果显示，２５ｍｇ／ｋｇ和５０ｍｇ／ｋｇ的苯并芘可诱导大鼠气管上皮细胞转化及微核增加，用同样方法研究了煤焦沥青提取物，结果表明，剂量为８ｍｇ／ｋｇ和２５ｍｇ／ｋｇ的煤焦沥青提取物能明显诱导大鼠气管上皮细胞转化。     

血脂调节剂的研究——Ⅰ.HMG-CoA还原酶抑制剂M-8614A及MH-2688B产生菌的筛选

利用酶联免疫吸附测定法,酶标β-羟基β-甲基-戊二酸单酰铺酶A(HMG-CoA)还原酶抑制剂Compactin抗体,定向筛选血脂调节剂。从青霉M-8614菌株发酵液中分离到M-8614A。该物质理化性质及波谱解释表明与Mevastatin为同一物质。 M-8614菌株用亚硝酸盐等诱变剂处理,从诱变株MH-2688发酵液中分离到MH-2688B。该物质理化性质及波谱解释表明与Lovastatin为同一物质。