残杀威对舰艇蜚蠊的抗性调查与防制研究

目的：观察残杀威对德国小蠊的药效。方法：采用果酱瓶药膜法和现场试验评价效果。结果残杀威对德国小蠊敏感品系的平均KT50为13．86min，现场品系8个调查点的KT50为11．25—38．02min，对抗氯菊酯品系KT50为16．06-23．37min，72h死亡率均为100％；现场试验，4周后的杀灭率仍达90．58％。结论：残杀威对德国小蠊现场品系为一般击倒；对抗氯菊酯品系尚未形成交互抗性，其水乳剂防制舰艇蜚蠊效果满意。     

小檗胺对小鼠脾细胞毒性T淋巴细胞活性的抑制作用

小檗胺对小鼠脾细胞毒性Ｔ淋巴细胞活性的抑制作用罗崇念，林新，王立为，赵扬，谢蜀生，肖培根（中国医学科学院药用植物研究所，北京１０００９４；北京医科大学免疫学教研室，北京１０００８３）小檗胺（ｂｅｒｂａｍｉｎｅ）是小檗属植物中的一种双节基异喹啉类生物碱...     

头孢呋辛酯制备工艺的改进

以头孢呋辛钠为原料，从制备（R，S）-乙酸1-溴乙酯开始。经酯化反应的溶剂沉淀过程无须分离直接制得高纯度非晶型的头孢呋辛酯。本制备方法简便，适于工为化生产。     

夜间电子生物阻抗测量装置对阴茎勃起功能障碍的检测

目的 :探讨夜间电子生物阻抗测量装置 (NEVA)在阴茎勃起功能障碍的诊断中的应用价值。方法 :对 4 1例主诉阴茎勃起功能障碍者 (障碍组 ) 19例主诉无勃起功能障碍但有射精障碍者 (无障碍组 )进行NEVA检测。结果 :障碍组夜间试验中的夜间勃起的次数、阴茎勃起的最大体积改变、最长持续时间等客观指标均要差于无障碍组 ,差异有统计学意义 (P <0 .0 1)。结论 :NEVA为非侵入性检测、可鉴别心理性阴茎勃起功能障碍和严重的器质性勃起功能障碍 ,且对勃起功能障碍的定性和定量具有一定的客观性。     

Effect of meal volume on gastric emptying

Abstract While the volume of a liquid meal has been identified as the principal accelerator of gastric emptying of liquids, the relationship between meal volume and gastric emptying of solids has been controversial. With solid foods, the need to reduce solid foods into small particles (trituration) before passage might obscure the effect of meal volume on solid propulsion. To distinguish trituration from driving force as the rate-limiting factor for emptying, 75 (1.6 mm) nylon spheres were fed along with different amounts of steak meals (150, 300 and 600 g), or alternatively, 50, 100 or 200 (1.6 mm) nylon spheres were fed to six dogs with 300 g steak meals. To examine the effect of meal volume on gastric emptying, we studied the effect of different meal volumes on the speed of gastric emptying of liquids (150, 300, 600 and 1200 ml of phosphate buffer) and solids (150, 300 and 600 g of cooked beef steak) in five dogs with duodenal fistulas. Intestinal inhibition was eliminated by diverting all chyme through the fistulas. In the absence of intestinal feedback, we found that gastric emptying of steak and spheres were different in that steak emptying was independent of meal volume (g min^-1 was constant across 150–600 g) while sphere emptying was affected by the number of spheres in the stomach and that liquid emptying was dependent on the meal volume (ml min^-1 increased across 150–1200 ml). Thus, meal volume accelerated gastric emptying provided the process is not rate-limited by trituration.     

米非司酮对人子宫内膜癌HHUA细胞ER、PR及亚型体外作用的研究

目的　探讨抗孕激素米非司酮体外对人子宫内膜癌HHU A细胞ER、PR及亚型的影响及其与抗肿瘤作用的相关性。方法　体外培养子宫内膜癌HHU A细胞,不同浓度米非司酮处理细胞4 8小时,采用逆转录-聚合酶链反应(RT- PCR)半定量法检测PR- A m RNA,PR- B m RNA的表达水平;应用免疫组化法检测HHU A细胞ER、PR受体蛋白的表达变化。结果　米非司酮(5 μmol/ L)显著地降低HHU A细胞PR- B m RNA和PR受体蛋白的表达水平(P<0 .0 5 ) ,但增加米非司酮剂量并不能增强其降调作用。抗孕激素米非司酮对HHU A细胞PR- Am RNA和ER受体蛋白表达无明显影响(P>0 .0 5 )。结论　抗孕激素米非司酮可明显降调子宫内膜癌HHU A细胞PR- B m RNA水平和PR蛋白的表达,并与抑制癌细胞增殖密切相关     

某区医院发热伴呼吸道症状病人临床分析

目的：探讨常见呼吸道发热疾病的临床特点及与传染性非典型肺炎(严重急性呼吸综合症，SAGS)的鉴别。方法：发热门诊诊治的以发热体温高于38℃伴呼吸道症状患者702例，对病因、临床表现、实验室检查、胸部X线、治疗及转归进行比较。结果：常见呼吸道发热患者中，急性上呼吸道感染596例占总数的85％，577病例白细胞计数不高占82％，淋巴细胞计数不降低，X线检查正常或仅有支气管炎表现。有基础肺部或全身疾病患者，虽然有发热，但往往以肺部或全身原发疾病相应症状为重要或首发表现，可有气急，体温以中度发热为主，78％病例有白细胞计数及中性比例升高。胸片除肺炎改变外，多有肺部基础疾病的表现，抗生素治疗有效；而单纯性肺炎胸部X线多表现为节段性或局灶性肺炎。这部分病例也以发热为主要或首发症状，一般表现为咳嗽、咳痰，气急少见，易与SARS混淆。结论：临床呼吸道发热疾病以急性上呼吸道感染最多见，容易忽略，要注意筛查。单纯性肺炎与SARS的鉴别，应结合流行病史、治疗反应及实验室检查结果进行。     

略论广东农村自学考试发展

高等教育自学考试是我国高等教育的重要组成部分 ,面向农村的自学考试事关我国“三农问题”、全民教育、加速实现“小康”的大局 ,其意义重大 ,任务艰巨。文章回顾了我国及广东省自学考试 2 0多年来的发展历程 ;分析了造成当前广东省农村自学考试面临困境的多种因素 ;探讨了加快广东省面向农村自学考试创新发展的途径。     

Suppression of human ovarian carcinoma metastasis by the metastasis-suppressor gene, BRMS1

Metastasis-suppressor genes, by definition, suppress metastasis without affecting tumorigenicity and, hence, present attractive targets as prognostic or therapeutic markers. BRMS1 (breast cancer metastasis suppressor) has recently been identified as a metastasis-suppressor gene for human breast cancer and melanoma. Expression of BRMS1 messenger RNA (mRNA) in multitissue including normal prostate, ovarian, testis, and colon has been detected by northern blot analysis. We hypothesize that the role of BRMS1 in tumor progression may not be limited to breast cancer and melanoma. We previously found that BRMS1 mRNA levels in primary ovarian epithelial carcinomas were significantly lower than that in normal ovarian and benign tumors (P < 0.05), and statistical analysis of BRMS1 mRNA levels revealed that BRMS1 mRNA levels were significantly higher in early tumor stages (I, II) compared with advanced tumor stages (III, IV) in which lymph node or distant metastases were present (P < 0.01). Our data showed that reduced BRMS1 mRNA seems to influence ovarian carcinoma metastatic ability. Therefore, we transfected BRMS1 plasmid into highly malignant ovarian carcinoma cell line, HO-8910PM, and examined cell biologic behaviors including proliferation, adhesion, invasion, and metastasis in vitro and in vivo. BRMS1 expression did not alter the proliferation of HO-8910PM cells in vitro and primary tumor formation in vivo. But, BRMS1 expression significantly suppressed the cell adhesion to extracellular matrix components and in vitro cell invasion in BRMS1-transfected HO-8910PM cells compared to parental HO-8910PM and vector-only transfectants (HO-8910PM-vect). Furthermore, motility of BRMS1 transfectants was inhibited. lung colony formation of intravenously injected BRMS1 transfectants in nude mice was significantly reduced. Also, BRMS1 transfectants form significantly less metastatic to organs of peritoneal cavity in orthotopically implanted ovarian tumor nude models. We further discovered that BRMS1 expression did downregulate expression of an actin-bundling protein associated with cell motility -fascin, which perhaps is the mechanism underlying BRMS1 suppression of metastasis. These data suggested that in addition to its already described role in breast cancer and melanoma, BRMS1 functions as a metastasis-suppressor gene in ovarian carcinoma by modifying several metastatic-associated phenotypes, offering a new target for therapeutic intervention.     

角膜重度碱烧伤羊膜移植治疗实验研究

目的 探讨羊膜移植治疗兔眼重度碱烧伤的机理，为其临床应用提供基础理论依据。方法建立兔眼角膜碱烧伤模型，分别以生理盐水、氯霉素眼药水、氯霉素眼药水和0．1％地塞米松及羊膜移植进行治疗，取伤后1d，3d，7d，14d房水检测TNF-α、IL—1。结果各时段氯霉素眼药水和0．1％地塞米松组和羊膜移植治疗组与生理盐水组和氯霉素眼药水组TNF—α、IL—1的活性和含量明显受到抑制。结论抑制TNF—α和IL—1的生物合成和释放可能是羊膜移植治疗角膜碱烧伤的机理之一。