蓖麻油餐用于晚期妊娠引产118例分析

目的：观察蓖麻油餐用于晚期妊娠引产的疗效。方法：随机选择１１８例服用蓖麻油餐引产与同期１０６例催产素引产作对照,观察引产效果、产程、产后出血及新生儿评分。结果：观察组引产效率明显高于对照组（Ｐ＜００５）,剖宫产率明显低于对照组（Ｐ＜００５）,两组的产后出血和新生儿阿氏评分无显著性差异（Ｐ＞００５）。结论：蓖麻油引产优于催产素引产。     

类风湿性关节炎患者血清IL-6、TNF水平变化及其意义探讨

采用细胞生物学方法测定类风湿性关节炎（ Ｒ Ａ）１４ 例血清 Ｉ Ｌ－ ６ 、 Ｔ Ｎ Ｆ 水平,均显著高于正常对照组（ Ｐ＜ ０ ．００１） 。相关分析显示 Ｉ Ｌ－ ６ 与 Ｔ Ｎ Ｆ 水平变化呈正相关（ Ｐ＜ ０ ．０１） , Ｉ Ｌ－ ６ 、 Ｔ Ｎ Ｆ 与血沉亦呈正相关（ Ｐ＜０ ．０５） 。认为, Ｉ Ｌ－ ６ 、 Ｔ Ｎ Ｆ 参与 Ｒ Ａ 的发病,两者在致病中有协同相同;其水平变化与 Ｒ Ａ 的活动性及血沉相关。     

Drug policy in China: pharmaceutical distribution in rural areas

In 1978, China decided to reform its economy and since then has gradually opened up to the world. The economy has grown rapidly at an average of 9.8% per year from 1978 to 1994. Medical expenditure, especially for drugs, has grown even more rapidly. The increase in medical expenditure can be attributed to changing disease patterns, a higher proportion of older people in the population and fee-for-service incentives for hospitals. Due to the changing economic system and higher cost of health care, the Chinese government has reformed its health care system, including its health and drug policy. The drug policy reform has led to more comprehensive policy elements, including registration, production, distribution, utilization and administration. As a part of drug policy reform, the drug distribution network has also been changed, from a centrally controlled supply system (push system) to a market-oriented demand system (pull system). Hospitals can now purchase drugs directly from drug companies, factories and retailers, leading to increased price competition. Patients have easier access to drugs as more drugs are available on the market. At the same time, this has also entailed negative effects. The old drug administrative system is not suitable for the new drug distribution network. It is easy for people to get drugs on the market and this can lead to overuse and misuse. Marketing factors have influenced drug distribution so strongly that there is a risk of fake or low quality drugs being distributed. The government has taken some measures to fight these negative effects. This paper describes the drug policy reform in China, particularly the distribution of drugs to health care facilities.     

Evaluation of the purity of a purified, inactivated hepatitis A vaccine (VAQTA).

Manufacture of VAQTA, an inactivated hepatitis A virus vaccine, includes extensive purification of the intact virus particle to remove endogenous components from the host cell culture lysate as well as compounds introduced in the upstream purification process. Analysis of the final purified hepatitis A virus product by SDS-PAGE prior to inactivation shows that greater than 95% of the protein in the preparation is found in four protein bands, which have been confirmed to be hepatitis A virus capsid proteins VP0, VP1, VP2 and VP3 based on Western blot and mass spectrometry analyses. Validation of the manufacturing process and direct analysis of the final product were used to demonstrate that no other specific host cell-derived components are detected and that process residuals are all below the limits of detection of the assays used. Establishment of a rigorous standard of high purity for this product was pursued to minimize the impact of impurities during clinical development of this product and will facilitate the incorporation of this product into combination vaccines.     

上海粘土的成拱能力探讨

针对用于上海污水外排的黄浦江底隧道工程,通过土工离心模拟试验,探讨了上海粘土的成拱能力.对于无支护的情况,开挖双孔隧道时,洞底以上约8 m厚的灰色砂质粉土或粘土中不能形成稳定的天然拱.进一步研究表明,该层土所需的成拱厚度至少为12 m;对于有混凝土管支护的情况,由于支护刚度较大,管顶上土压力基本上等于管顶以上土层的自重应力.     

Quantitative analysis of diabetic macular edema after scatter laser photocoagulation with the scanning retinal thickness analyzer

PURPOSE: To define the effect of scatter laser photocoagulation on foveal retinal thickness. METHODS: A commercial scanning retinal thickness analyzer was used to measure retinal thickness. The foveal retinal thickness was measured at the central area of the fundus (0.4 x 0.4 mm). The method was applied to 20 consecutive patients (mean age, 52.4 +/-16.9 years) with diabetic retinopathy. Measurements were performed before and 6 weeks after scatter photocoagulation. Patients were examined by fluorescein angiography and slit-lamp biomicroscopy to detect macular edema. RESULTS: Mean foveal thickness before scatter photocoagulation was 187+/-45 microm, increasing to 221+/-46 microm after the treatment (P = 0.0001). The foveal thickness increased in 12 eyes (60%). Laser treatment increased macular permeability in two eyes (10%). Biomicroscopic examination revealed central macular thickening in one eye (5%). Visual acuity was reduced in four eyes (20%). CONCLUSIONS: Our results suggest that subclinical macular edema occurs after scatter laser photocoagulation. The retinal thickness analyzer is a sensitive tool for early detection of macular edema after laser treatment, because increases in retinal thickness as small as 34 microm cannot be assessed by slit-lamp biomicroscopy.     

应用视神经纤维分析仪检测正常人视网膜神经纤维层厚度

目的 探讨正常人的视网膜神经纤维层厚度及其象限比值与年龄的关系。方法 应用视神经每人义检测１９８例（１９８只眼）正常志愿者,并按年龄分组进行统计分析。结果 ＲＮＦＬＴ与年龄成负相关,上、下方象限厚度较鼻、颞侧大,与年龄相关、鼻、颞侧无此特点。上、下方象限厚度比值平均为１．０４１。结论 ＮＦＡ是测量ＲＮＦＬＴ的可靠方法,正常人的ＲＮＦＬＴ随年龄的增长而减少。     

儿童角膜穿通伤合并外伤性白内障人工晶体植入术临床分析

本文回顾分析２６ 例 （２６ 眼） ５～１４ 岁儿童角膜穿通伤合并外伤性白内障植入后房型人工晶体的临床结果。对麻醉、人工晶体植入、后囊纤维膜样混浊进行了分析讨论。提示 ８ 周岁以上儿童常能在眼局部麻醉下顺利地完成手术。认为对儿童角膜穿通伤合并外伤性白内障植入人工晶体, 应视眼部伤情及术中情况, 权衡利弊, 区别选择Ⅰ期或Ⅱ期植入。作者观察到, 这类联合手术的后囊纤维膜样改变, 在术后一至二周即在不同程度上有所表现。     

Cytotoxicity of urushiols isolated from sap of Korean lacquer tree (Rhus vernicifera stokes)

Cytotoxicities of four urushiols, congeners isolated from the sap of Korean lacquer tree (Rhus vernicifera Stokes), to 29 human cancer cell lines originated from 9 organs were evaluated. Their values of 50% growth inhibition were below 4 microg/ml, and showed cell line specific cytotoxicity. The present result is the first report on the cytotoxicity of urushiols suggesting that they would have an anticancer activity to human cancer cells.