西脉式环抱器用于骨折内固定术护理配合要点

目的:探讨西脉镍钛形状记忆合金环抱器用于骨折内固定术有关的护理配合问题。方法:12例不同部位骨折病人(其中男性8例、女性4例、年龄15～62岁)采用西脉镍钛(TiNi)形状记忆合金环抱器人实施内固定手术,观察术中护理配合要点和实际效果。结果:骨折复位满意,手术持续时间<2h。所有病人术后均无感染迹象,手术切口愈合良好。结论:围术期护理配合质量(如器械选择、塑形准备、无菌操作等)的优劣,是手术成功与否的重要因素之一。     

结直肠癌中雄激素受体及其与临床病理学特征关系的研究

应用放射性配基结合分析法，检测了４０例结直肠癌及部分癌旁正常粘膜组织中的雄激素受体（ＡｎｄｒｏｇｅｎＲｅｃｅｐｔｏｒ，ＡＲ），同时分析了ＡＲ水平与临床病理学变化的关系。证实结直肠癌ＡＲ数目（３３．７±２３．３ｆｍｏｌ／ｍｇ蛋白）明显低于癌旁５ｃｍ以外粘膜（５３．９±３２．４ｆｍｏｌ／ｍｇ蛋白），Ｐ＜０．０１，而其亲和力则无变化；结直肠癌时ＡＲ数目变化与女性、直肠癌、高分化癌及早期癌关系密切。提示ＡＲ与结直肠癌关系密切，本实验为临床上结直肠癌的诊断及内分泌治疗提供了初步资料。     

Interactions of LDL and modified LDL with mesangial cells and matrix.

Hyperlipidemia may play a role in the progression of diabetic and other renal diseases. Low density lipoprotein (LDL) and other proteins including extracellular matrix components undergo nonenzymatic glycation in vivo. We examined the effects of glycation of LDL as occurs in diabetes (4 to 8%) on binding and uptake by mesangial cells and their proliferation. The glycation of LDL (g-LDL) significantly decreased its binding and uptake by mesangial cells by 15 to 20%, indicating that glycated LDL binds to the LDL receptor, but with lower affinity than LDL. Both LDL and g-LDL modestly stimulated [3H] thymidine incorporation into mesangial cells at 5 to 10 micrograms/ml. Native, oxidized (Ox-LDL) and glycated LDL all bound to the extracellular matrix generated by rat mesangial cells in culture. The binding of LDL, Ox-LDL and g-LDL to mesangial matrix was two to four times higher than to mesangial cells. Binding of LDL and g-LDL was significantly higher to glycolaldehyde modified matrix, which serves as an in vitro model for nonenzymatic glycation end-product cross-linking of matrix which occurs in long-standing diabetes. Based on these findings, we propose that glycation of LDL decreases its binding and uptake by the LDL receptor of mesangial cells and may slow its catabolism. Furthermore, LDL bound to extracellular mesangial matrix can undergo oxidation and generate cytotoxic LDL components. This process may be further enhanced by advanced glycation of the mesangial matrix in diabetes, contributing to glomerular pathology.     

空运医疗车在运-8C上的应用

2007年6月,我院空运医疗队首次在运-8C飞机上使用了空军航空医学研究所最新研制的空运医疗(推)车.现将我们的使用情况及体会介绍如下.     

慢性乙型病毒性肝炎治疗新方法

就当前慢性乙肝治疗的新方法、新进展作一综述。     

过氧化物酶体增殖物激活受体对小鼠肝细胞生长周期的影响

目的 探讨过氧化物酶体增殖物对小鼠原代肝细胞生长周期的影响和配体过氧化物酶体增殖物激活受体（proxisome proliferators—activated receptor，PPAR）alpha在肝癌形成过程中的变化。方法 在小鼠原代肝细胞中加入PPAR配体Wy-14，643，经不同培养时间后，应用流式细胞仪、逆转录-聚合酶链反应及Western blot等方法检测细胞增殖和凋亡，细胞周期蛋白p21WAFI、cyclinD1的mRNA及蛋白的变化情况。结果 在小鼠原代肝细胞中加入Wy-14，643培养2、4、6d，S＋G2／M期细胞比例分别为（42．3±1．2）％，（50．3±2．1）％，（52．1±2．3）％，细胞凋亡率分别（9．0±0．2）％，（7．9±2．O）％，（7．4±1．3）％，与未加药组相比，细胞增殖明显增高（P〈0．05），凋亡明显减少（P〈0．05）；各加药组cylinD1 mRNA和蛋白的表达也比对照组明显增高（P〈0．05）；各加药组p21^WAF1 mRNA与对照组相比表达无显著变化（P〉0．05），第4天开始出现p21^WAF1。蛋白的表达显著增加（P〈0．05）。结论 过氧化物酶体增殖物通过其配体PPARα引起细胞周期蛋白的改变，导致正常细胞周期信号的传导紊乱，引起细胞异常的增殖和凋亡，从而有可能诱发肿瘤。     

少突胶质与早产儿脑室周围白质软化

脑室周围白质软化是早产儿最主要的脑损伤类型,少突胶质前体细胞(OPC)是病变的关键靶细胞,OPC对缺血缺氧和炎症反应引起的损害高度敏感.了解OPC的易损机制可为防治脑窒周周白质软化提供新的思路.     

静脉溶栓联合导管碎栓和切栓治疗急性大面积肺栓塞

目的评价静脉溶栓联合导管碎栓和切栓治疗急性大面积肺栓塞的临床疗效和安全性。方法对19例急性大面积肺栓塞患者，采用下腔静脉滤器置入、肺动脉导管碎栓和静脉溶栓加低分子肝素抗凝治疗，19例中4例加用了Straub Rotarex导管血栓旋切术。结果19例共行21次治疗。18例经介入治疗后胸闷、紫绀症状均明显改善，肺动脉中央分支血流恢复通畅，血氧饱和度由术前平均86％（74％～96％）上升到治疗后的平均97％（94％～100％）。肺动脉压力从术前的（334-5）mmHg（1mmHg=0．133kPa）下降到术后的（254-5）mmHg（t=13．2，P〈0．01）。l例双侧肺动脉主干大块血栓栓塞的患者，介入治疗无效，后经胸外科手术取栓未能成功，患者死亡。4例成功地采用了Straub Rotarex旋切治疗肺动脉血栓，未出现并发症。结论采用导管碎栓和血栓旋切等介入技术联合静脉溶栓抗凝治疗，是治疗急性大面积肺动脉栓塞的有效而且安全的方法。     

派立明与贝特舒联合应用对降眼压的临床观察

目的评价1.00%派立明(AZOPT)与0.25%贝特舒点眼液每日两次点眼对原发性开角型青光眼、高眼压症及抗青光眼术后高眼压的降眼压效果及安全性。方法31例患者51只眼纳入为期2个月的前瞻性研究。在停用其他抗青光眼药物足够长的时间后测量基础值,用药后每2周复查一次共4次,同时观察眼局部及全身副作用。结果用药前眼压为23.85±1.80 mmHg,4次随访眼压下降均值6.55 mmHg(6.06～7.04),眼压下降率27.50%(26.62～28.59%)。少数病例出现烧灼感、视物模糊、口苦等症状,均为轻度能耐受,对视力、眼底无影响。结论派立明与贝特舒联合用药具有稳定的降眼压效果,具良好耐受性。     

Two novel gastric cancer-associated genes identified by differential display

AIM To clone novel gastric cancer-associated genes and investigate their roles in gastric cancer occurrence.METHODS A method called differential display was used which allows the identification of differentially expressed genes by using PAGE to display PCR-amplified cDNA fragments between gastric cancer cells and normal gastric mucosa cells. These fragments were cloned into plasmid vector pUC18. Homology analysis was made after sequencing these fragments.RESULTS Two novel genes were identified compared with sequences from GenBank. One was registered with the AD number AF 051783. In situ hybridization showed that these two novel genes expressed specifically in gastric cancer tissues.CONCLUSION The two novel genes obtained by differential display were confirmed to be gastric cancer-associated genes using in situ hybridization.