ABS-2000全自动血库系统临床应用评价研究

目的:通过相应的测定对自动化血库系统适用性和安全性进行全面评价,并对输血相容性检测方法与常规手工方法进行全面对比.方法:使用人工设计的各种样本对仪器进行特异性、灵敏度及抗干扰试验的对比评估,以及对临床常规9108例标本进行ABO正反定型,Rh(D)测定及抗体筛检测定,并对相应结果进行对比分析.结果:对人工设置的各种测定标本,在特异性、灵敏度和抗干扰试验中,测定结果均能达到设计要求,并优于手工Polybrene方法.ABO血型测定9108份,除正反定型不符.228份,报告NTD给予提示外,其它测定血型全部与报告血型相符;Rh(D)所测结果为4份NTD,9104份结果全部相符.抗体筛检测定9108份,抗筛阳性383份,使用同一种抗筛细胞进行手Polybrene方法抗筛测定阳性仅为228份,统计学有显著性意义(P＜0.005).结论:ABS2000应用的固项检测技术具有较高的敏感度,能检测出较弱的IgG类的不规则及自身抗体,以上检测结果及统计情况与国外相关报道情况相符,此仪器在临床检测中使用可以达到保证安全检测的目的.     

太极通天液治疗血管性痴呆的疗效评价

目的：评价太极通天液治疗血管性痴呆的临床疗效。方法：随机将148例血管性痴呆分为太极通天液治疗组和丹参口服液对照组，另接应用韦氏成人智力量表评分，将血管性痴呆组分为3个亚组：即80－89分组，70－79分组和70分以下组，观察期为3个月。结果：太极通天液治疗前后WAIS－RC评分与对照组比较，80－89分组和70－79分组均有统计学差异（P＜0．05），而70分以下组无统计学差异（P＞0．05），结论：太极通天液对血管性痴呆有较好的治疗效果，且与痴呆病情程度有关。     

ULTRASTRUCTURAL INVESTIGATION ON THE ARTICULAR CARTILAGE FROM RABBIT KNEE JOINT AFTER IMMOBILIZATION IN CAST

The articular cartilages from the left knee of 30 rabbits immobilized in casts in functional position were studied under transmission electron microscope. The pathological changes which begin at early stage of immobilization included both degeneration and repair of cartilage. The striking morphological features observed were: (1) most chondrocytes in various layers of cartilage underwent progresive degeneration; (2) the concomitant abnormal proliferation of some chondrocytes happened in a brief period. The changes in mechanical stress caused by immobilization affected the nutrition of cartilage and finally led to its reactive structural reformation.     

氨氯地平与尼群地平治疗高血压的多中心平行对照研究

采用多中心、随机、单盲、组间、平行对照的方法对488例原发性高血压患者进行氨氯地平或尼群地平4周治疗观察，显示氨氯地平的降压有效率为90．4％，较尼群地平显著为高。不良反应较少，安全性好。每日只需服药1次，剂量5～10mg，方便病人。     

大鼠正中隆起及垂体结节区生长抑素免疫阳性成分的分布

应用免疫组织化学方法观察了大鼠正中隆起及垂体结节区内生长抑素免疫阳性成分的分布,新发现:在交叉后区的正中隆起前部内侧带,有少量的生长抑素免疫阳性神经元胞体;少量阳性纤维几乎垂直行向腹侧,有的可达脑膜表面。垂体结节区内可见较密集的生长抑素阳性纤维丛,其上可见较多的膨体;一些纤维同样到达腹侧表面。     

糖皮质激素受体阻断对烫伤大鼠肺、肾血管壁通透性变化的影响

我们以糖皮质激素受体（ＧＲ）的竞争性拮抗剂ＲＵ３８４８６（简称ＲＵ４８６）阻断大鼠体内的ＧＲ，并通过检测肺、肾组织匀浆中荧光标记白蛋白的含量，观察了烫伤后１２ｈ大鼠肺、肾血管壁通透性的变化以及阻断ＧＲ对这种变化的影响。结果显示：烫伤后１２ｈ，大鼠肺、肾组织匀浆中荧光标记白蛋白含量明显高于对照组（肺：Ｐ＜０．０５；肾：Ｐ＜０．００１）；阻断ＧＲ后再烫伤大鼠，其肺、肾组织匀浆中的荧光白蛋白含量又显著高于烫伤组（Ｐ＜０．０５）。提示：①烫伤后１２ｈ，大鼠肺、肾血管壁通透性明显升高。②ＧＲ减少可加重烫伤所致的血管壁通透性升高，并可逆转内源性糖皮质激素（ＧＣ）稳定血管壁通透性的作用。     

Analysis of alterations of oncogenes and tumor suppressor genes in chronic lymphocytic leukemia.

B cell chronic lymphocytic leukemia (B-CLL) represents the most frequent adult leukemia in the Western world. The molecular pathogenesis of B-CLL is largely unknown. Although initial reports on small panels of cases had suggested a role for Bcl-1 and Bcl-2 oncogene activation in B-CLL, later investigations failed to confirm these data. Among tumor suppressor genes, p53 mutations have been reported in a fraction of cases. In this study, we have attempted a conclusive definition of the involvement of dominantly acting oncogenes (Bcl-1 and Bcl-2) and tumor suppressor loci (p53, 6q-) in 100 cases of B-CLL selected for their CD5 positivity and Rai's stage (0 to IV). Rearrangements of Bcl-1 and Bcl-2 and deletions of 6q and 17p were analyzed by Southern blot using multiple probes. Mutational analysis (single strand conformation polymorphism and polymerase chain reaction direct sequencing) was used to assay p53 inactivation. No alterations of Bcl-1 or Bcl-2 were detected in the 100 cases tested. Mutations of p53 were found in 10/100 cases without any significant association with clinical stage. Deletions of 6q were present in 4/100 cases. Overall, our data indicate that: 1) contrary to previous reports, Bcl-1 and Bcl-2 rearrangements are not involved in CD5+ B-CLL pathogenesis and 2) p53 mutations are present in 10% of cases at all stages of the disease.     

Preterm delivery and its risk factors]

A case-control study on preterm delivery was conducted in Jianan and Jianhan District, Wuhan City in 1988. 130 singleton preterm infants were included with 260 term infants as control. The results showed that the risk factors in prematurity were edema-proteinuria-hypertension syndrome (OR 1.8), maternal diseases in pregnancy (OR 1.6), hyperemesis gravidarum (OR 5.1), vaginal bleeding during pregnancy (OR 2.4), premature rupture of membranes (OR 3.6), low weight gain and low average weight gain per week during pregnancy, psychosocial stress during pregnancy, inadequate prenatal care, maternal stature less than 158 cm (OR 1.7), menarche before age 12 (OR 4.3), multi-gravida (OR 2.1), previous induced abortion (OR 2.1) and passive cigarette smoking during pregnancy. The author suggests that early treatment of complications of pregnancy and forcing prenatal care should be emphasized in order to reduce the incidence of preterm births.     

通过原生质体融合获得青霉素高产菌株

采用两株分别带有不同抗药性标记的产黄青霉原生质体以1:1相混合,用30％的聚乙二醇(MW6000)原生质体融合处理。将混和物涂布在补给有两种药物同时存在的高渗性分离培养基上,培养后获得异核体菌落。洗下异核体分生孢于继续分离在补给有两种药物同时存在的分离培养基上,得到了同时带有两种抗性标记的重组体。纯化后,进行抗性稳定性和摇瓶效价的测定,将一株具有双重抗性、摇瓶发酵效价较高的菌株作出发菌株,经诱变因子处理后,获得了一株43u7c—57菌株,在摇瓶中效价比生产菌株平均提高4.94％,该菌株在40吨发酵罐试生产后,发酵效价平均提高4.4％,产量则平均增加12.15％。