血液分离胶的制备研究

目的 :对血液分离胶的制备进行研究。方法 :用天然橡胶和特效触变剂等原料制备具有触变性的凝胶 ,研究该凝胶分离血清的较优组成。结果 :血液分离胶的较优组成是天然橡胶 12 .8%、特效触变剂 2 8.0 %和溶剂汽油 5 8.2 %。结论 :所制备的血液分离胶具有制备容易、分离效果好和成本较低等优点。     

成都地区汉族人群ACE基因多态性与血清ACE活性的相关性

为调查中国汉族人群血管紧张素转换酶(ACE) 基因多态性分布及与血清ACE(SA CE)活性的相关性.采用比色法和PCR技术,对90例健康汉族人群进行SACE活性和ACE基因插入/缺失(I/D)多态性的检测.结果显示:中国汉族人群ACE基因DD型占18%,DI型占44%,II 型占38%, D和I等位基因频率分别为0.40和0.60.ACE基因多态性与SACE活性密切相关,提示不同种族间ACE基因分布存在着差异,中国汉族人群ACE基因多态性以II型和I等位基因占优势;SACE活性受ACE基因I/D多态性的影响.     

99mTc-DTPA气溶胶显像测定呼吸道粘液纤毛清除功能

为进一步研究呼吸道疾病时的粘液纤毛清除功能,采用99mTc-DTPA气溶胶吸入显像,通过电影显示定性和定量指标分析.对18 例健康受试者和患者进行了显像研究,得到气道清除率和粘液纤毛清除率的正常值,并观察了32例慢性阻塞性肺病(COPD)患者气管-支气管纤毛清除功能的改变.结果显示,健康受试者与COPD患者粘液纤毛清除率(mm/min)分别为3.89±0.92和1.32±0.59,两者比较有显著性差异(P＜0.01),COPD患者不同时间气道清除率和粘液纤毛清除率均明显低于健康受试者(P＜0.01).本研究方法简便客观,具有定性观察和定量分析的优点,对于呼吸系统其它疾病(如支气管扩张、原发性纤毛无运动)的研究及药物疗效的评价具有重要的临床实用价值.     

2型糖尿病及其血管并发症患者血清ACE活性的变化

为了解2型糖尿病及其血管并发症患者血清ACE(SACE)活性的变化, 采用比色法对1 27例2型糖尿病患者和90例正常人进行SACE活性的检测。结果显示：糖尿病患者SACE活性(45 9. 51±175.85U)明显高于正常人(321.14±121.27U);糖尿病肾病组SACE活性(548.27±166.60 U)明显高于非肾病组(383.20±139-00U),但微量蛋白尿组(528.10±190.70U)与大量蛋白 尿 组(545.83±138.60U)SACE活性比较无统计学意义(P＞005);糖尿病视网膜病变 组SACE活性(465.64±178.93 U)与无视网膜病变组(449.07±170.04U)比较也无统计学意义;糖尿病患者SACE活性与病程 、 血压、血脂和血糖无关。提示ACE可能仅参与了糖尿病和糖尿病肾病的发病,而与糖尿病肾 病进行性发展、糖尿病视网膜病变和高血压发病无关。     

Polymorphism of ACE gene and its relationship with serum ACE activity in the Hans in Chengdu region]

This study was aimed at the angiotensin converting enzyme (ACE) gene insertion/deletion(I/D) polymorphism distribution in Chinese and its relationship with serum ACE activity(SACE). SACE activity and ACE gene polymorphism in 90 healthy persons in Chengdu region were investigated using a spectrophotometric assay and the PCR technique, respectively. The results showed that, in the Hans, DD genotype of ACE gene was 18%, DI genotype 44%, and II genotype 38%. Allele frequencies were 0.40 for the D allele and 0.60 for the I allele. There were significant relationships between ACE I/D polymorphism and SACE activity. The results suggest that ACE genotype distribution be different between races, that II genotype and I allele be more frequent in Chinese, and that SACE activity be under the influence of a genetic polymorphism of ACE in Chinese.     

门静脉高压症合并幽门螺杆菌感染患者胃粘膜的病理改变

目的：本文研究门静脉高压症合并幽门螺杆菌感染患者胃粘膜病理变化的特点,旨在探讨ＨＰ感染在ＰＨＧ发病机制中的意义。方法：对６０例门静脉高压症患者由内窥镜取胃粘膜活检证实有无ＨＰ感染;同时对门静脉高压性胃粘膜病变（ＰＨＧ）者,无论是否伴有幽门杆菌感染分别进行光镜、电镜观察。结果：（１）６０例门脉高压症（ＰＨ）患者有４８例为ＨＰ阳性（８０％）,其中ＰＨＧ患者ＨＰ阳性率为８７％,ＮＰＨＧ患者阳性率仅为６０％;（２）ＨＰ阳性和ＨＰ阴性的门脉高压症患者均合并有胃粘膜病变,且前者以重型为主,后者以轻型为主。结论：（１）ＨＰ感染是形成门脉高压性胃粘膜病变的促进因素;（２）门脉高压时胃粘膜变化包括细胞机制和免疫反应两方面。     

2型糖尿病及其血管并发症患者血清ACE活性的变化

This investigation was made with reference to the changes of serum angiotensin converting enzyme (SACE) activity in type 2 diabetes and its vascular complications. SACE activity was studied in 127 type 2 diabetic patients and 90 healthy persons by using a spectrophotometric assay. The results showed SACE activity was obviously higher in diabetic patients (459.51 +/- 175.85 U) than in healthy persons (321.14 +/- 121.27 U); SACE activity was significantly higher in type 2 diabetic patients with diabetic nephropathy (548.27 +/- 166.60 U) than in patients without diabetic nephropathy (383.2 +/- 139.00 U), but there was no difference between patients with microalbuminuria and macroalbuminuria; no statistical difference was detected in SACE activity between diabetic patients with diabetic retinopathy (465.64 +/- 178.93 U) and without retinopathy (449.07 +/- 170.04 U); SACE activity was not associated with the course of diabetes, blood pressure, blood lipid and blood glucose. These data suggest that raised SACE activity might only play a role in the initiation of type 2 diabetes and diabetic nephropathy, but not relate to the progress of diabetic nephropathy, the onset of diabetic retinopathy and hypertension.     

急性脑挫伤患者脑脊液神经元特异性烯醇化酶的变化及意义

目的 :探讨急性脑挫伤患者脑脊液中神经元特异性烯醇化酶 (Neuron -specificenolase,NSE)的变化。方法 :用放射免疫双抗体夹心法对 2 4例广泛脑组织挫伤组 ,30例局部脑挫伤及正常对照组脑脊液NSE含量进行测定。并测定各组冬氨酸转氨酶 (Aspartatetranscarbamoylsse ,AST)水平。结果 :弥漫性脑挫伤患者脑脊液NSE浓度为 (2 5 .43± 5 .6 1)ng/ml,局灶性脑挫伤组为 (14.6 1± 7.5 2 )ng/ml,对照组为 (7.81± 3.2 1)ng/ml,脑挫伤组明显高于对照组 (P <0 .0 5 ) ,且弥漫性脑挫伤组与局灶性脑挫伤组差异显著 (P <0 .0 5 )。脑挫伤组中AST明显高于对照组 ,但AST在广泛脑挫伤组与局部脑挫伤组中无明显差异。结论 :急性脑挫伤患者的NSE、AST水平升高 ,且NSE与脑挫伤体积相关 ,NSE可反映挫伤及其严重程度     

嗜铬细胞瘤超微结构和P21,P53的过量表达

目的：研究嗜铬细胞瘤的超微结构和ｒａｓＰ２１、Ｐ５３过量表达的情况。方法：利用透射电镜和流式细胞术方法进行。结果：１４例瘤细胞内线粒体发达,粗面内质网丰富,胞浆内充满大量致密颗粒,超微结构特征与临床表现方面没有特征性差异;１０例进行流式细胞术分析表明异倍体肿瘤５０％,ｒａｓＰ２１表达阳性７例,Ｐ５３表达阳性５例,两者均表达阳性４例,进一步分析发现,Ｐ２１表达阳性者,其细胞增殖指数明显高于Ｐ２１表达     

原发性肝癌合并门静脉癌栓的外科治疗(附28例分析)

目的：探讨肝癌合并门静脉癌栓（ＴＴＰＶ）的有效治疗方法。方法：将２８例肝癌合并门静脉主干／主支癌栓患者分３组。１０例行肚切除＋门静脉取栓＋肝动脉、门静脉双灌注化疗栓塞及生物治疗（Ａ组）;１２例行肝动脉、门静脉双灌注化疗栓塞及生物治疗（Ｂ组）;６例行肝动物灌职栓塞（Ｃ组）。结果：Ａ组效果最优,１、２年生存率均为１００％,３年生存率５０％,４年生存率２０％,５年生存率１０％,Ｂ组１年自下而上率为５８．