泌尿生殖道支原体临床分离株对7种抗菌药物的耐药性研究

目的 比较7种抗生索对泌尿生殖道支原体临床分离株的抗菌作用，指导临床用药。方法 采用直接肉汤药盘法测定了临床标本中146株解脲脲原体(Uu)和92株人型支原体(Mh)对7种抗菌药物的耐药性。结果 146株Uu对四环索、多西环索、米诺环素、罗红霉索、阿齐霉索、交沙霉索、氧氟沙星的耐药率分别为34．2％、24．7％、28．1％、8．9％、4．8％、11．0％、和28．8％。92株Mh对四环索、多西环索、米诺环索、罗红霉索、阿齐霉索、交沙霉索、氧氟沙星的耐药率分别为55．5％、25．0％、45．7％、97．8％、100％、8．7％、和16．3％。耐四环索的Uu和Mh株对多西环索、米诺环索、交沙霉索以及氧氟沙星存在交叉耐药性。850例Uu和Mh混合感染者对交沙霉索的耐药率最低(8．1％)。结论 泌尿生殖道支原体的耐药性监测对指导临床治疗具有重要意义。     

抗癌胶囊对实验性肿瘤的治疗及对化疗减毒作用研究

目的：研究抗癌胶囊对小鼠移植肿瘤S180，H22，Lewis的抑瘤作用及对化疗药所致小鼠免疫功能抑制的保护作用。方法：按照抗癌药物筛选规程进行体内抑瘤实验：采用氟尿嘧啶（FU）制备免疫功能低下模型，测定抗癌胶囊对小鼠白细胞计数、免疫器官重量、腹腔巨噬细胞吞噬功能和NK细胞的影响。结果：抗癌胶囊对小鼠移植肿瘤S180，H22，Lewis均有不同的抑瘤作用，其中高剂量组抑瘤效果最佳，并对小鼠体重生长无明显影响。抗癌胶囊还有明显拮抗FU所致白细胞下降，胸腺、脾脏萎缩，腹腔巨噬细胞功能降低和NK细胞减少等毒副作用。结论：抗癌胶囊具有明显的抗肿瘤作用。     

E-test试条对异质性耐万古霉素葡萄球菌的检测

目的 探讨E—test对异质性耐万古霉素葡萄球菌的检测价值。方法 从连续接触万古霉素的脑心浸液琼脂(BHIA)平板上挑取万古霉素异质性耐药葡萄球菌苗株，应用万古霉素E—test试条、药敏纸片和琼脂平板对倍稀释法测定药敏结果。结果 E—test检测的对万古霉素异质性耐药葡萄球菌MRSHl09，MRSH2，MRSH13，MRSH31，MRSH60，MRSHl08，MRSH73，MRSH97，MRSH102的MIC依次为：16、24、48、48、16、32、24、24mg/L，其中耐药7株占77．8％(7/9)，中介2株占22．2％(2/9)；琼脂对倍稀释法的MIC为：16、32、64、32、16、32、32、16、32mg/L，耐药6株占66．7％(6/9)，中介3株占33．3％(3/9）；药敏纸片直径依次为：14、12、10、11、10、15、13、10，13mm，敏感率为11．1％(1/9)。结论 E—test可以便捷直观地鉴定对万古霉素异质性耐药葡萄球菌的药敏结果，与琼脂平板对倍稀释法接近，优于纸片法。     

细胞周期素D1与p53蛋白在卵巢上皮性肿瘤的表达及意义

目的　探讨细胞周期素D1(CyclinD1)与 p5 3蛋白在卵巢上皮性肿瘤的表达及意义。 方法　 1990～1995年应用免疫组化法对 4 0例恶性卵巢上皮性肿瘤及 2 0例良性卵巢上皮性肿瘤组织进行CyclinD1与 p5 3蛋白检测。结果　良性卵巢上皮性肿瘤CyclinD1阳性表达为 10 0 % ,而恶性卵巢上皮性肿瘤CyclinD1阳性表达为37 5 %。良性卵巢上皮性肿瘤p5 3阳性表达为 15 0 % ,恶性卵巢上皮肿瘤 p5 3阳性表达为 4 7 5 %。CyclinD1在卵巢上皮癌G1与G2 、G3 中的阳性表达统计学差异有显著性 (P <0 0 5 ) ,p5 3蛋白在早期卵巢上皮癌与晚期卵巢上皮癌组织中的阳性表达 ,统计学差异有显著性 (P <0 0 5 ) ,p5 3蛋白的阳性表达在卵巢癌G1与G2 、G3 比较差异有显著性 (P <0 0 5 )。CyclinD1过表达的细胞同时也有 p5 3的过表达。 结论　CyclinD1与 p5 3蛋白在卵巢上皮性肿瘤的共同表达可能是促进卵巢上皮性肿瘤发展的因素。     

Clinical characteristics of patients with thyrotropin-secreting pituitary adenoma.

BACKGROUND AND PURPOSE: Thyroid-stimulating hormone (thyrotropin, TSH)-secreting pituitary adenoma is a very rare cause of hyperthyroidism. Diagnosis of this condition is often delayed due to lack of availability of TSH radioimmunoassay (RIA), the failure to recognize the utility of RIA and the incorrect attribution of the condition to other causes of thyrotoxicosis. This retrospective study analyzed the clinical characteristics of patients with this disorder treated from 1991 to 2002. METHODS: Seven patients (6 females, 1 male; mean age, 48 years; range, 33 to 72 years) with a diagnosis of TSHsecreting pituitary adenoma based on detectable TSH levels with high serum free thyroid hormone or triiodothyronine concentrations and pituitary lesions found on neuroimaging were included in this study. Patient records including clinical features, endocrine studies, immunohistochemistry studies, and response to treatment were reviewed. RESULTS: All 7 patients had hyperthyroidism, elevated free thyroxine or triiodothyronine levels, and unsuppressed levels of TSH. Imaging studies demonstrated a pituitary mass or lesion in all patients. Six patients had macroadenomas and 1 patient had a microadenoma. One of the patients had coexisting acromegalic features and hypersecretion of growth hormone was diagnosed. All of the patients had been treated with thionamides or thyroidectomy for presumed primary hyperthyroidism. Serum alpha-subunit level was uncharacteristically normal in 2 patients and elevated in 1 patient. Alpha-subunit/TSH molar ratios were elevated in 3 patients. Five patients underwent transsphenoidal adenomectomy but only one of them remained well-controlled at follow-up. Three patients received administration of somatostatin analogs and they achieved normalization of serum TSH and free thyroid hormones during the period of therapy. CONCLUSIONS: TSH immunoassay has an important role in the evaluation of hyperthyroid patients to determine the presence of inappropriate secretion. TSH-secreting pituitary adenoma exhibits heterogeneity in clinical presentation, hormonal expression and therapeutic response.     

Comparison of Di-n-methyl Phthalate Biodegradation by Free and Immobilized Microbial Cells

Objective To compare the biodegradation of di-n-methyl pathalate by free and immobilized microbial cells. Methods The enrichment and isolation technique was used to isolate the microorganism. The PAV-entrapment method was utilized to immobilize the microorganisms. The scanning electron microscophy (SEM) was used to observe the growth and distribution of microbial cells immobilized inside the PVA bead gels. The GC/MS method was used to identify the main intermediates of DMP degradation. Results The microbial cells could grow quite well in PVA gel.The metabolic pathway did not change before and after immobilization of the microbial cells. The degradation rate of immobilized cells was higher than that of flee cells. Conclusion The immobilized microbial cells possess advantages than free cells when applied to the biodegradation of toxic organic pollutants.     

Driver Sleepiness and Risk of Car Crashes in Shenyang, a Chinese Northeastern City： Population-based Case-control Study

Objective To estimate the association of driver sleepiness with the risk of car crashes. Methods A population-based case-control study was conducted in Shenyang, a northeastern city in China, between November 2001 and July 2002. The case group comprised 406 car drivers involved in crashes, and 438 car drivers recruited at randomly selected sites, and on the day of week, and the time of day when they were driving on highways in the study region during the study period were used as control groups. Face-to-face interviews with drivers were conducted according to a well-structured questionnaire covering the circumstances of their current trip and their background information. Stanford sleepiness scale and Epworth sleepiness scale were used to quantify acute sleepiness and chronic sleepiness respectively. Results There was a strong association between chronic sleepiness and the risk of car crash. Significantly increased risk of crash was associated with drivers who identified themselves as sleepy (Epworth sl     

Effects of Fat-soluble Extracts From Vegetable Powder and β-carotene on Proliferation and Apoptosis of Lung Cancer Cell YTMLC-90

Objective The aim of this investigation was to study the effects of fat-soluble extracts from vegetable powder (FEFVP) and β-carotene on the proliferation and apoptosis of cultured YTMLC-90 lung cancer cells. Methods The lung cancer cells were continuously exposed to a broad range of concentration of FEFVP and [3-carotene. The proliferation was evaluated in MTT test. The induction of apoptosis was evaluated by morphological change, DNA fragmentation analysis, and DNA content analysis combined with flow cytometric analysis. Results Both FEFVP and β-carotene were found to inhibit cell proliferation and to induce morphologic changes consistent with apoptosis in YTMLC-90 cancer cells, including cellular shrinkage, chromatin condensation and nuclear fragmentation. DNA agarose gel electrophoresis showed DNA fragmentation ‘ladder‘‘. Flow cytometric analysis revealed decreased DNA content and the presence of a sub-G1 apoptotic peak.Conclusion These findings are consistent with the induction of apoptosis. Moreover, the effects of FEFVP are stronger than those of β-carotene. FEFVP inhibits the growth of YTMLC-90 probably via the induction of apoptosis cancer cells.     

预防肺泡胸膜漏临床分析（附110例恶性肺肿瘤肺叶切除）

目的 探讨恶性肺肿瘤行肺叶切除后影响住院时间的因素。方法 研究分析1995年11月至2002年10月我科收治的110例恶性肺肿瘤行肺叶切除患者的临床病理资料，相关因素数值化后，以Logistic回归分析得到对住院时间影响较大的因素。结果 术后并发症气胸和术前肺功能指标第一秒用力呼气量(FEVl)是较大的影响住院时间因素。结论 提高术前肺功能储备及预防术后气胸的发生是缩短住院时间的关键。     

湿疹Ⅰ号搽剂的制备工艺研究

目的　探讨湿疹I号搽剂的最佳制备工艺。方法　采用比较法和正交试验法 ,对湿疹Ⅰ号搽剂的制备工艺进行优选。结果　以蛇床子 8倍量 75 %乙醇浸泡 7d ,残渣与其余药材加 12倍量水、煎煮 2次、煎 6 0min为最佳。结论　该工艺可用于指导本制剂的生产