南方红豆杉组织培养研究Ⅰ.愈伤组织诱导和培养条件优化

介绍了南方红豆杉植物愈伤组织诱导和继代培养条件,在ＭＳ－培养基上,附加不同种类和浓度配比的激素,在光照条件下对植物愈伤组织的诱导率和生长量等进行了比较,其中当２,４－Ｄ１．２ ｍｇ／Ｌ＋６－ＢＡ ２． ８ ｍｇ／Ｌ＋ＮＡＡ ３ ｍｇ／Ｌ或 ４ ｍｇ／Ｌ时,愈伤组织诱导率和生长量最高,结果表明,不同激素组合对愈伤组织诱导率、生长量和发生的性状有明显的影响。为南方红豆杉植物细胞悬浮培养建立了基础,为解决红豆杉的资源贫乏提供了新途径。     

安国引种黄芪的质量初步评价

测定安国县１０个村引种黄芪药材中黄芪甲苷含量,平均值为０．１９９％,比传统道地黄芪高２倍,比《中国药典》标准（不得少于０．０４％）高近４倍,但外观质量难以相比,１０个村黄芪药材中砷、汞、铅、镉、镍、钴等 ６种元素的平均值分别为 ０． ２４４、０． ００９、１．７３１、０． ０３６、０． ２１４、０． ３０２ μｇ／ｇ,与土壤中６种元素的比值即富集系数≤０．５。     

The construction ofSchistosoma Japonicum vaccine BCG-Sj26GST and its identification

Summary The expression of foreign gene,Schistosoma Japonicum 26 ku antigen (Sj26GST),in Bacillus Calmette-Guerin (BCG),Mycobacterium CM. smegmatis) andEscherichia coli (E. coli) were studied. The cDNA fragment encoding Sj26GST was amplified by PCR using plasmid pGEX, which could express Sj26GST inE. coli as template. The Sj26GST cDNA was cloned into the downstream of humanM. tuberculosis heat shock protein (hsp) 70 promoter with correct reading frame, and then the DNA fragment containing hsp70 promoter and Sj26GST gene were subcloned together intoE. coli-Mycobacteria shuttle plasmid pBCG-2000 to construct the expression shuttle plasmid pBCG-Sj26. The recombinant BCG andM. smegmatis mc²155, which were electroplated with pBCG-Sj26, could express Sj26GST and the recombinantSchistosoma Japonicum vaccine BCG-Sj26GST was made. The recombinant Sj26GST (rSj26GST) were soluble and could be observed on SDS-PAGE at molecular weight of 26 ku. The content of rSj26GST accounted for 15% and 10% of total bacterial protein in BCG andM. smegmatis respectively. The results of Western blot showed the combination of rSj26GST with antibody of GST. This project was supported by Primary Foundation of China (No. 94-Y-19), Chinese National Nature Science Foundation (No. 339480022) and Chinese Health Foundation (No. 94-1-131).     

The experimental study on mixed culture of osteoblasts and tricalcium phosphate ceramicsin vitro

Summary To study the effects of tricalcium phosphate (TCP) ceramics on osteoblasts, the rat osteoblasts were cultured with the TCP ceramicsin vitro. Scanning electron microscopy and the colorimetric methyl-thiazol-tetrazolium assay showed that the osteoblasts could adhere well to the surface of the ceramics and the culture dish, and the proliferation of the cells was not inhibited. The results demonstrated that TCP ceramics possessed an excellent cytocompatibility with the osteoblasts, and had some promoting effects on proliferation of osteoblasts. This project was supported by grant from the National Natural Science Foundation of China (No. 59493202).     

牛磺酸对小鼠脾细胞DNA损伤的影响

目的探讨牛磺酸对紫外线所致小鼠脾细胞ＤＮＡ损伤的影响。②方法小鼠饲料中分别添加牛磺酸、维生素Ｃ（ＶｉｔＣ）和维生素Ｅ（ＶｉｔＥ）喂养１１２ｄ后,荧光法（ＦＡＤＵ法）检测小鼠脾细胞ＤＮＡ链的断裂程度,并与对照组比较。③结果紫外线照射前,小鼠脾细胞ＤＮＡ链断裂程度各组间差异无显著性（Ｆ＝０．８７５６,Ｐ＞０．０５）;紫外线照射后,牛磺酸、ＶｉｔＣ,ＶｉｔＥ各组脾细胞ＤＮＡ双链剩余率高于对照组,差异均有显著性（Ｆ＝２０．４５,ｑ＝３．０１～４．０８,Ｐ均＜０．０５）。④结论牛磺酸可减轻紫外线对小鼠脾细胞ＤＮＡ分子的损伤。     

慢心律联合丹参治疗糖尿病周围神经病变的疗效观察

目的 :为糖尿病周围神经病变探讨有效的治疗方法。方法 :选择 65例糖尿病周围神经病变患者 ,随机分为两组 ,一组为慢心律治疗组 ,另一组为慢心律联合丹参注射液治疗组 ,以临床表现改善客观指标及运动传导速度 (MCV)、感觉传导速度 (SCV)测定做为判定标准。结果 :两组经治疗 4wk后 ,慢心律组总有效率为76 7% ,慢心律联合丹参注射液组总有效率为 94 3 %。两组肌电图显示神经传导异常率均下降 ,而以慢心律联合丹参注射液组作用较强 (P <0 0 5 )。结论 :慢心律联合丹参注射液治疗糖尿病周围神经病变更有效     

血管性痴呆的CT和TCD相关性研究

目的：为探讨血管性痴呆病变部位和血流动力学改变及其相关性。方法：采用头颅ＣＴ 影像技术及经颅多普勒（ＴＣＤ） 技术对３８ 例患者分别进行两项检测。结果：（１） 头颅ＣＴ 示病变多在基底节,丘脑多发梗塞及左额、左额顶大面积梗塞,大多合并脑萎缩。（２）ＴＣＤ 示以大脑中、前动脉异常率为高,表现峰值平均血流速度（ Ｖｍ） 下降,搏动指数（ＰＩ） 增高。结论：病变多位于基底节、丘脑处,其相应的脑血流也减少,说明大脑中动脉、椎动脉血流动力学改变是血管性痴呆影像学改变的病理基础     

家庭环境因素对青少年精神分裂症的影响

目的 探讨精神分裂症和家庭环境的关系。方法 用自编“家庭环境调查问卷”、修订的父母养育方式评价量表（ＥＭＢＵ）对８２例青少年患者和８２个正常青少年家庭进行调查,用Ｃａｍｂｅｒｗｅｌｌ家庭会谈表（ＣＦＩ）评定患者亲属的情感表达（ＥＥ）水平。结果 （１）病例组父母关系、亲子关系差,父母有不良行为习惯者多（Ｐ〈０．０５）;家庭性患者父母文化水平低、经济收入低、健康状况差（Ｐ〈０．０１）。（２）病例组父母     

火锅汤汁中亚硝酸盐及硝酸盐含量的检测

目的：探讨火锅餐饮的安全性。方法：对南宁市６家火锅城的５３份样品用ＧＢ５００９－８５盐酸萘 乙二胺法和镉柱法检测。结果：（１）火锅尾汤中亚硝酸盐酸盐含量值分别为１．３４ｍｇ／Ｌ、３２４．７４ｍｇ／Ｌ,与底汤相比：硝酸直或高;（２）方差分析：用味火锅汤汁中亚硝酸盐、硝酸盐含量均低于其他类型火锅汁含量;（３）逐步回归分析得了回归方程;Ｙ（硝酸盐）＝７０．５０９＋１７３．４１７９Ｚ１（砂锅）－０．５２２     

输卵管阻塞的介入治疗

目的：为明确输卵管阻塞的部位及程度,提供一种安全、可靠成功率高的治疗方法。方法：用自制的输卵管再通器具对５２例病人共８９条输卵管作选择性造影,并对其中７５条间质部或峡部阻塞的输卵管作再通术,术后抗炎及定期输卵管通液治疗。结果：插管成功率为９１％,再通成功率为８１．３％,无严重并发症。结论：该技术操作简单,集诊断及治疗于一体。成功率高,病人痛苦少,是诊治输卵管首选方法。