病灶清除内固定植骨治疗胸椎结核

目的;探讨手术治疗胸椎结核的更好方法。方法;自１９９０年以来,对２１例胸椎结核导致椎柱不稳的患者,应用病灶清除,哈氏棒内固定,椎间及椎板植骨的手术方法。本组平均３３．２岁。胸７椎体６例,胸８椎体８例,胸１０椎体７例,椎体压缩〈１／２椎体高度１３例,〉１／２椎体高度８例,并不全瘫１４例。手术中先行病灶清除,然后哈氏棒内固一,撑开后再次清除病灶,取肋骨和髂骨行椎间及椎板上植骨。术后化疗１２～１５月。结     

4-硒硫酸酯多糖的体内抗瘤作用

目的　观察 4-硒硫酸酯多糖 (Se-carra)的体内抗瘤作用。方法　于小鼠右腋皮下接种瘤细胞 2 4h后开始给药 ,连续 10天 ,观察其抑瘤率 ;小鼠腹腔接种肿瘤细胞前或接种后连续给药 10天 ,观察动物的生存时间。结果　 4-硒硫酸酯多糖能明显抑制肿瘤细胞的生长 ,延长小鼠的生存期。结论　 4-硒硫酸酯多糖体内给药有良好的抗瘤效果 ,值得进一步研究。     

室内空气净化方法及性能评价

本文列举了常用的室内空气净化方法,重点阐述了臭氧灭菌的机理、影响紫外线杀菌效果的因素及纳米光催化在消除室内污染方面的优势.最后,介绍了室内空气净化器的性能评价标准.     

我国高等职业院校办学特色研究

从高等职业教育发展历史、高等职业教育特点及国家高等职业教育政策等方面探讨如何体现高等职业院校办学特色。     

HPLC法测定大黄通便颗粒中大黄素和大黄酚的含量

建立大黄通便颗粒中大黄素和大黄酚含量的HPLC测定方法.采用Spherixorb C18色谱柱,流动相:甲醇-0.1%磷酸溶液(90:10),流速:0.8ml·min-1,检测波长:254nm.线性范围:大黄素0.0135～0.2160μg(r=0.9998),大黄酚0.0240～0.3840μg(r=0.9995).平均加样回收率(n=5)分别为大黄素100.8%,RSD=1.1%;大黄酚100.2%,RSD=0.8%.本法简便,快速,结果准确.     

益气活血方促心梗后大鼠缺血心肌血管新生的实验研究

目的：观察益气活血方对心梗后大鼠缺血心肌局部血管新生的影响。方法：建立心梗模型后，分为五组，即益气活血方大剂量组、益气活血方小剂量组、麝香保心丸组、假手术组、模型组，灌胃6周后处死动物，取心肌组织，用免疫组化法（CD34）测定心梗边缘区新生血管数及微血管密度。结果：与假手术组相比，模型组大鼠心梗边缘区新生血管数及微血管密度明显升高（P〈0.05）；所有治疗组对新生血管数及微血管密度均有不同程度的促进作用，与模型组比较均有显著差异（P〈0．05），其中大剂量组和麝香保心丸组的作用尤为明显（P〈0.05）。结论：益气活血方能够促进心梗后大鼠缺血心肌局部血管新生，对缺血心肌具有保护作用。     

Hypoxia increases the expression of enamel genes and cytokines in an ameloblast‐derived cell line

The aim of this study was to investigate the effect of hypoxic conditions on the expression of enamel genes and on the secretion of alkaline phosphatase (ALP), lactate dehydrogenase (LDH), cytokines, and interleukins by an ameloblast‐derived cell line. Murine ameloblast‐derived cells (LS‐8 cells) were exposed to 1% oxygen for 24 and 48 h and harvested after 1, 2, 3, and 7 d. The effect of culture in hypoxic conditions on the expression of structural enamel matrix genes and on the secretion of cytokines and interleukins, as well as ALP and LDH, into the cell‐culture medium was calculated relative to the expression and secretion of these factors by untreated cells (controls) at each time point. Hypoxia increased expression of the structural enamel matrix genes amelogenin (Amelx), ameloblastin (Ambn), and enamelin (Enam), and the enamel protease matrix metalloproteinase‐20 (Mmp20). Expression of hypoxia‐inducible factor 1‐alpha (Hif1α), and secretion of several vascularization factors and pro‐inflammatory factors, were increased after 24 and 48 h of hypoxia. The ALP activity was reduced after 24 and 48 h of hypoxia, whereas the LDH level in the cell‐culture medium was higher after 24 h of hypoxic conditions compared with 48 h. In conclusion, hypoxic exposure may disrupt the controlled fine‐tuned expression and processing of enamel genes, and promote the secretion of pro‐inflammatory factors.     

疗养院护士应急处置能力培养的做法与体会

<正>军队疗养院的主要服务对象是离职和在职的高、中级干部,海、空勤特勤人员等[1]。作为疗养康复对象,他们在疗养期间可能会发生各种各样的突发急症。面对突发情况,护士正确、快速、有效的处置,会使疗养员转危为