胰岛素基础--大剂量方案治疗青春期1型糖尿病儿童的疗效观察

目的：观察胰岛素基础—大剂量注射方案治疗青春期1型糖尿病儿童的临床疗效。方法：采用胰岛素基础—大剂量治疗方案4次／d(睡前注射中效，三餐前注射短效)治疗4例青春期糖尿病患儿6月。结果：4例患儿慢性高血糖症得以控制，空腹及餐后血糖水平接近正常，糖化血红蛋白(HbA1α)基本恢复正常，酮症酸中毒发生减少。结论：胰岛素基础—大剂量方案治疗能够控制青春期糖尿病血糖水平。     

论中医诊治非典型肺炎

本文回顾了50年来我国中医防治流行性乙型脑炎、麻疹、流行性出血热等流行性病毒疾病获得成功的经验，认为中医理论不把着力点放在对病原体的认识上，而是注重病原体侵入人体、病证斗争所表现的证候的辨证论治。作者提出诊治非典型肺炎的理论依据与特色。根据广东省中医院收治非典患者112例的临床观察，认为该病属中医春温温热疾病的范畴，并提出定名为春温病伏温证。本文详细记载该院中医治疗方案和典型医案。     

5种喹诺酮类抗菌剂治疗老年性肺炎的疗效评价

目的 评价左氧氟沙星、培氟沙星、氟罗沙星、氧氟沙星和洛美沙星对肺炎的临床疗效。方法 采用随机对照法，每种药物治疗130例老年肺炎患者，对痰培养细菌行药敏试验，疗效及不良反应进行比较。结果 药物敏感性优良次序为左氧氟沙星、培氟沙星、氟罗沙星、氧氟沙星、洛美沙星；临床治愈率分别为58．46％、56．92％、55．38％、52．31％、47．69％，有效率分别为87．69％、83．08％、81．54％、80．00％、72．37％；不良反应率为6．15％、10．77％、16．92％、7．69％、13。85％。结论 左氧氟沙星疗效高，不良反应少，是喹诺酮类治疗老年性肺炎的首选药物。     

控制性超排卵长、短方案在IVF-ET中的疗效比较

目的:比较促性腺激素释放激素激动剂(GnRHa)长、短方案控制性超排卵在体外受精-胚胎移植(IVF-ET)中的疗效。方法:将2001年7月-2002年4月因双侧输卵管梗阻IVF-ET的患者100人随机分为长方案组(50人)和短方案组(50人)进行超排卵。长方案组从使用促性腺激素(Gn)治疗前1月经周期黄体期(月经21天)使用GnRHa 0.3mg/d,至垂体完全降调节后加用Gn;短方案组从月经周期第2天开始用GnRHa0.1mg/d,同时加用Gn。当患者有3个以上卵泡直径>18mm时肌肉注射人绒毛膜促性腺激素(HCG),36小时后取卵行IVF,取卵48小时后行ET。结果:两组患者平均获卵数、受精率、卵裂率、优质胚胎率、移植胚胎数、临床妊娠率、胚胎种植率及流产率差异无显著性。而两者的Gn使用量有差别,短方案组少于长方案组,两组差异有显著性。两组用Gn第7天雌激素水平不同,短方案组明显高于长方案组,两者差异有显著性。结论:GnRHa长、短方案在IVF-ET中控制性超排卵效果相同,但所需Gn数量不同。     

天麻中硒的流动注射-氢化物发生-原子吸收光谱测定方法研究

目的　探讨原子化器温度、载气流速、KBH4 浓度等条件 ,对流动注射 氢化物发生 原子吸收光谱法 (FI HG AAS)测定硒时的影响。建立了FI HG AAS测定新鲜天麻中硒的分析方法。方法　流动注射 氢化物发生 原子吸收光谱法。结果　在优化的工作条件下 ,测定硒的最低检测浓度为 0 2 8μg·L- 1 ,线性范围为 0～ 50 μg·L- 1 ,相对标准偏差小于 5 % ,加样回收率为 96 %～ 1 0 4 % ,应用于新鲜天麻、富硒新鲜天麻中微量硒的测定 ,结果满意。结论　本法克服了传统的间断氢化物发生 原子吸收光谱法分析速度慢、样品耗量大、操作繁琐 ,且因手工进样在进样速度和进样体积上容易带来误差等缺点。方法操作简便、快速 ,灵敏度及自动化程度高     

陈香露白露胶囊对实验性急性胃炎的作用

目的 观察中成药陈香露白露胶囊对大鼠急性实验性胃炎的作用。方法 分别用0.3g/kg(低剂量），0.6g/kg(中剂量）和1.2g/kg(高剂量）陈香露白露胶囊灌胃给药，观察并比较其对乙醇致大鼠胃粘膜损伤，水杨酸钠诱导大鼠急性胃炎和醋酸致小鼠发生扭体反应的影响。结果 陈香露白露胶囊0.6g/kg和1.2g/kg均能明显降低乙醇致胃粘膜损伤和水杨酸钠诱发的急性胃炎的溃疡指数，0.3g/kg,0.6g/kg和1.2g/kg均可明显降低醋酸所致小鼠发生的扭体反应次数。结论 陈香露白露胶囊对大鼠的乙醇致胃粘膜损伤和水杨酸钠诱发的急性胃炎有明显的保护作用。并能抑制醋酸诱发的小鼠扭体反应次数。     

凉血清营颗粒对Ⅰ型变态反应的影响

目的:研究凉血清营颗粒对Ⅰ型变态反应的影响.方法:用天花粉蛋白所致小鼠速发型超敏反应及大鼠同种异体被动超敏反应(PCA)观察对Ⅰ型变态反应的影响;用化合物48/80所致小鼠过敏性休克死亡及大鼠颅骨肥大细胞模型观察对肥大细胞脱颗粒的影响;用组织胺所致小鼠皮肤毛细血管通透性亢进试验观察对组织胺的直接对抗作用.结果:凉血清营颗粒能一定程度拮抗天花粉蛋白所致小鼠过敏性休克及大鼠PCA,并能明显抑制化合物48/80及天花粉蛋白所致腹腔或骨膜肥大细胞脱颗粒,还能明显对抗组织胺所致毛细血管通透性亢进.结论:凉血清营颗粒具有显著的抗Ⅰ型变态反应作用,此作用可能是其能抑制IgE生成、肥大细胞脱颗粒及直接拮抗组织胺作用的综合效果.     

Multiple myeloma regression mediated by bruceantin.

PURPOSE: Bruceantin has been shown to induce cell differentiation in a number of leukemia and lymphoma cell lines. It also down-regulated c-MYC, suggesting a correlation of down-regulation with induction of cell differentiation or cell death. In the present study, we focused on multiple myeloma, using the RPMI 8226 cell line as a model. EXPERIMENTAL DESIGN: The effects of bruceantin on c-MYC levels and apoptosis were examined by immunoblotting, 4',6-diamidino-2-phenylindole staining, evaluation of caspase-like activity, and 3,3'-dihexyloxacarbocyanine iodide staining. The potential of bruceantin to inhibit primary tumor growth was assessed with RPMI 8226 xenografts in SCID mice, and apoptosis in the tumors was evaluated by the terminal deoxynucleotidyl transferase-mediated nick end labeling assay. RESULTS: c-MYC was strongly down-regulated in cultured RPMI 8226 cells by treatment with bruceantin for 24 h. With U266 and H929 cells, bruceantin did not regulate c-MYC in this manner. Apoptosis was induced in the three cell lines. In RPMI 8226 cells, apoptosis occurred through proteolytic processing of procaspases and degradation of poly(ADP-ribose) polymerase. The mitochondrial pathway was also involved. Because RPMI 8226 cells were the most sensitive, they were used in a xenograft model. Bruceantin treatment (2.5-5 mg/kg) resulted in a significant regression of tumors without overt toxicity. Apoptosis was significantly elevated in tumors derived from animals treated with bruceantin (37%) as compared with the control tumors (14%). CONCLUSIONS: Bruceantin interferes with the growth of RPMI 8226 cells in cell culture and xenograft models. These results suggest that bruceantin should be reinvestigated for clinical efficacy against multiple myeloma and other hematological malignancies.     

人前列腺癌细胞PC-3M亚系u-PAR基因表达的分析

目的 为研究与人前列腺癌细胞(PC-3M)侵袭能力相关的靶分子。方法 采用有限稀释法分离单克隆细胞株，并应用单层细胞侵袭等实验鉴定各亚系的体外侵袭能力；借助RT-PCR和免疫组化的方法，分别在转录和翻译水平检测5株侵袭能力不同的PC-3M亚系尿激酶型纤溶酶原激活物受体(u-PAR)的表达。结果 高侵袭亚系u-PAR基因mRNA的表达和蛋白质水平均明显高于低侵袭亚系。结论 PC-3M亚系u-PAR的高表达与其较强的侵袭能力密切相关，而u-PAR可能是抑制高侵袭亚系侵袭效应的一个重要靶分子。     

Effects of N-acetylcysteine on pulmonary macrophage activity after intestinal ischemia and reperfusion in rats / with invited commentaries

BACKGROUND/AIMS: Intestinal ischemia and reperfusion (I/R) is considered to be a critical and triggering event in the development of distal organ dysfunction after a variety of insults. It appears that activated leukocytes, especially polymorphonuclear granulocytes (PMNs), and reactive oxygen species are important mediators in the process. In the present study, the aim was to evaluate the behavior of pulmonary macrophages, acute lung injury and pulmonary endothelial permeability after intestinal I/R, together with potential alterations in pulmonary endothelial and epithelial ultrastructure and cellular membrane system integrity. METHODS: Intestinal ischemia for 40 min was followed by reperfusion for 12 h in the rat. Macrophage uptake of radiolabeled bacteria, levels of pulmonary blood content assessed by radiolabeled red blood cells and pulmonary endothelial permeability of radiolabeled albumin, as well as pulmonary endothelial and epithelial ultrastructure and cellular membrane system integrity by the use of scanning electron microscopy and a tracer was evaluated after 12 h reperfusion. Treatment with the free radical scavenger N-acetylcysteine (NAC) administered prior to reperfusion was evaluated. RESULTS: Overactivation of pulmonary macrophages was noted after intestinal I/R, as was a significant decrease in pulmonary blood content. No increase in pulmonary albumin leakage or increase in pulmonary water content was found after intestinal I/R as compared to controls. Treatment with NAC prevented against intestinal I/R-induced overactivation of pulmonary macrophages and a decrease in pulmonary blood content. CONCLUSION: Reactive oxygen species may be involved in the regulation of pulmonary macrophage function and pulmonary circulation after intestinal I/R.