烫伤大鼠细胞免疫抑制与肠源性内毒素血症的关系

采用大鼠４０％ＴＢＳＡⅢ度烫伤模型，将动物随机分烫伤对照组和选择性消脱污染防治组，探讨烫伤大鼠全身性细胞免疫抑制与肠源性内毒素血症的关系。结果显示，大鼠４０％Ⅲ度烫伤后脾细胞对促有丝分裂原增殖应答反应、诱生白介素－２（ＩＬ－２）活性及Ｔ细胞亚群（Ｔｈ／Ｔｓ）比值明显下降，预防性进行ＳＯＤ动物，内毒素血症发生率显著降低，脾细胞增殖应答反应和ＩＬ－２活性的诱生能力均明显恢复（Ｐ〈０．０５￣０．０１），     

抗体工程与病理学

结合抗肝癌基因工程抗体的制备，概述了抗体工程的工作内容及其与病理学的关系，抗体工程的主要目的之一是制备人的或接近人的，而能在病人体内应用的抗体，一方面它可以来源于单克隆抗体的改造，首先克隆出鼠抗体可变区的轻链及重链成为小抗体或重组成单链抗体及人鼠嵌合抗体等基因工程抗体。另一方面，也可以用免疫过的小鼠脾细胞或者人的淋巴细胞建立鼠、人抗体库，然后抗原从抗体库中筛选出鼠或人的各种类型抗体。鉴于抗体对靶细胞一般只起导向作用，要携带效应分子才发挥杀伤肿瘤细胞的作用或其它作用。常用的“弹头”有毒素及细胞因子等。所以必须将这种基因与抗体基因融合在一起才能表达有作用的融合蛋白。抗体工程还包括抗体的增效或抗体的成熟，以及对照人抗体的结构进行置换，使抗体人源化等。     

用中子活化分析法测定江西荼叶中的微量元素

用中子活化分析法测定江西荼叶中的微量元素马永焕，陶秉莹，丘相国，谢明勇（南昌大学食品学院，南昌３３００２９）ＴｈｅＤｅｔｅｒｍｉｎａｔｉｏｎｏｆＴｒａｃｅＥｌｅｍｅｎｔｓｉｎＪｉａｎｇｘｉＴｅａｂｙＮｅｕｔｒｏｎＡｃｔｉｖａｔｉｏｎＡｎａｌｙｓｉｓＭ...     

Analysis of differentially expressed genes in fetal skin of scarless and scar-forming periods of gestational rats

Objective: To study the differences of gene expression between earlier gestational skin and later gestational skin of rats with the aids of single primer amplification (SPA) and high-density oligonucleotide DNA array to understand the molecular mechanism of scarless healing. Methods: Total RNAs were isolated from fetal rat skin of the scarless (E15) and scar-forming (E18) periods of gestation (term =21.5 days). The RNAs from earlier gestational skin (EGS) and later gestational skin (LGS) were both reversely transcribed to cDNAs, then labeled with the incorporation of fluorescent dCTP for preparing the hybridization probes by SPA method. The mixed probes were then hybridized to the oligonucleotide DNA arrays which contained 5 705 probes representing 5 705 rat genes. After highly stringent washing, these DNA arrays were scanned for fluorescent signals to display the differentially expressed genes between the 2 groups of skin. Results: Among 5 705 rat genes, there were 53 genes (0.93%) with differentially expressed levels between EGS and LGS groups, 27 genes, including fibroblast growth factor 2 ( FGF2 ) and follistatin were up-regulated (0.47%) and 26 genes were down-regulated (0.46%) in fetal skin during scarless period versus scar-forming period. Higher expressions of FGF2 and follistatin in EGS than those in LGS were also revealed by RT-PCR method. Conclusions: High-density oligonucleotide DNA array provided a powerful tool for investigating differential gene expression in earlier and later gestational fetal skins. This technology validates that the mechanism of fetal scarless healing is very complicate and the change of many gene expressions is associated with fetal scarless healing.     

异基因骨髓移植后供者干细胞输注与供者淋巴细胞输注抗白血病作用的比较

异基因骨髓移植后白血病复发是一个重要的问题,其发生率达10%～36%.在疾病晚期和采用去T细胞移植的患者中复发率可高达70%以上[1],对于此类患者联合化疗效果差,而二次移植则只在晚期复发的患者中效果较好[2,3].一些研究者曾采用供者免疫活性细胞输注或使用人重组白细胞介素2来刺激供者造血或增强移植物抗白血病作用(graft-versus-leukemia,GVL)[4-6].我们报告了20例异基因骨髓移植后复发的白血病患者,对他们分别进行了无粒细胞集落刺激因子(G-CSF)动员的供者淋巴细胞(donor-derived lymphocyte,DDL)输注或G-CSF刺激后采集的供者干细胞(peripheral blood progenitor cell,PBPC)输注.     

16种抗生素在两种培养基上抑菌效果观察

细菌学纸片扩散法药物敏感试验的标准为Kirby-Bauer法，该法指定选用Mueller－Hinton琼脂（MHA）作为实验用培养基。为了解抗生素在普通营养琼脂（NA）和MHA培养基上抑菌效果的差异，我们选择了16种常用抗生素，对照观察了各种抗生素对某一菌株在这两种培养基上抑菌圈直径的差别。回材料和方法1．1材料氨于西林、校等西林、听拉西林、头抱哩琳、头抱拉定、头抱磷脂、头抱曲松、头抱响酮、头抱他定、庆大霉素、受市霉素、链霉素、阿米卡星、诺氟沙星、环丙沙星和氧氟沙星共16种。NA、MHA和药敏纸片，均采用杭州康壮生物工程公司产品。…     

亲电性对醌二甲烷与富电子烯烃的电荷转移聚合

概述了亲电性对醌二甲烷与富电子烯烃电荷转移聚合的最新进展，着重介绍聚合的一般特征、引发机理、链增长机理，以及单体结构、溶剂对聚合反应的影响。     

治痹一例

张××,女,55岁,农民。1984年5月8日诊。素患痹证。一月前因下田栽秧,次日即出现全身关节肌肉酸痛,逐渐加重,左膝红肿疼痛,不能屈伸,头晕,心悸,口渴,便结尿黄,形体消瘦。体温39.5℃,舌质黯,苔黄微腻,脉滑数。此乃体内素有蕴热,复感寒湿,蕴郁日久,化热化火,壅滞气血,变生关节不利诸证。治宜清热泻火,宣痹通络,兼祛风湿。处     

内镜腹腔镜联合治疗胆囊结石合并胆总管结石

目的评价内镜腹腔镜联合治疗胆囊结石合并胆总管结石的价值. 方法选择性27例胆囊结石合并胆总管结石行ERCP检查,发现胆总管结石后,在11～12点位将乳头切开1.0～2.0 cm,＜1.0 cm的结石用取石网或球囊取出;＞1.0 cm的结石用碎石器粉碎后取出.ERCP术后3～7 d行LC. 结果 ERCP成功25例,其中胆囊管低汇流2例,乳头炎性狭窄6例.发现胆总管下段癌1例,1例EST后取石网篮取石嵌顿不能拖出,余23例经EST一次取石成功,并行LC手术成功.ERCP 2例失败,为十二指肠乳头严重水肿插管失败.ERCP EST术后轻型胰腺炎2例,高淀粉酶血症4例,对症治愈. 结论内镜ERCP与LC的联合应用对进一步明确胆石症诊断、选择手术方式、预防LC并发症具有重要价值.