促甲状腺素释放激素对烧伤休克大鼠脂质过氧化的影响

目的 探讨促甲状腺素释放激素(Thyrotropin-releasing hormone, TRH)对烧伤休克大鼠氧自由基所引起的脂质过氧化损伤的作用.方法 复制大鼠40% TBSAⅡ°烧伤休克动物模型,烧伤后0.5 h给予TRH(5 mg.kg-1体重),观察烧伤前后平均动脉压的动态变化,烧伤后生存时间,烧伤后1、3、5 h血浆、心、肝、肺、肾SOD活力和MDA含量的变化.结果 TRH能提高烧伤休克大鼠的血压并维持在高水平,明显抑制生命器官组织MDA含量的上升,提高SOD活力,大鼠的生存时间明显延长.结论 TRH在抗大鼠烧伤休克的同时,具有良好的抗脂质过氧化损伤作用,适合于烧伤早期应用.     

In situ and immunocytochemical localization of E-FABP mRNA and protein during neuronal migration and differentiation in the rat brain

The present study compares the temporal-spatial expression and tissue localization of the rat epidermal type fatty acid binding protein (E-FABP) (DA11/C-FABP/S-FABP/LEBP/KLBP) in the developing rat central nervous system (CNS). In situ hybridization (ISH) and immunocytochemistry (ICC) studies demonstrate that mRNA E-FABP and protein are expressed at high levels during neurogenesis, neuronal migration, and terminal differentiation. Migrating pyramidal cells in the cerebral cortex, Purkinje cells and deep nuclear neurons in the cerebellum, and neurons in the olfactory bulb and retina exhibited a strong E-FABP-like immunoreactivity (E-FABP-LI) throughout the entire process of differentiation and migration. The levels of E-FABP mRNA and protein were dramatically higher in prenatal and early postnatal neurons, as compared to adult neurons. The E-FABP antibody immunoreacted with growing neurites, and nuclear and cytoplasmic regions of neurons. The intracellular multiregional pattern of localization of E-FABP and its differential temporal expression during development, are consistent with its proposed role in transporting long chain free fatty acids and/or other hydrophobic ligands during neuronal differentiation and axon growth.     

Nogo-66受体在脂质筏中的定位

目的 探讨Nogo-66受体（NgR）存神经元胞膜脂质筏中的定位。方法 利用免疫荧光双标法检测NgR和脂质筏特异标志物穴蛋白（Cavcolin）在培养的小脑颗粒神经元上的表达．并用Wcstcrn blot法检测以去垢剂法提取的脂质筏中NgR的表达。结果 免疫荧光双标显示NgR和Cavcolin的表达部化．Western blot分析发现脂质筏中NgR的表达为阳性。结论 在小脑颗粒神经元胞膜脂质筏中有NgR的表达．提示脂质筏有可能促进NgR的信号转导。     

顺丁烯二酸酐改性环氧二甲基丙烯酸酯的合成与应用

为了合成顺丁烯二酸酐改性的环氧二甲基丙烯酸酯树脂及其物理机械性能。按量取E51环氧树脂、甲基丙烯酸、顺丁烯二酸酐，与催化剂N，N-二甲基苄胺一起进行反应。检测了由合成EAM单体或EMA单体配制复合树脂的压缩强度、径向拉伸强度、表面硬度、固化深度、吸水值和水溶解值。与EMA单体比较，含EAM单体的复合树脂明显增强了压缩强度、径向拉伸强度、表面硬度、固化深度值，降低了吸水值和水溶解值。     

普伐他汀调节冠心病患者血脂及血压的临床观察

目的:探讨普伐他汀对冠心病患者血脂的调节作用及对血压的影响。方法:将80例冠心病患者随机分成治疗组和对照组。治疗组服用普伐他汀20mg,每晚1次;对照组服用安慰剂,疗程均为4wk。观察治疗前、后血清中总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白(HDL-C)以及收缩压(SBP)、舒张压(DBP)的变化。结果:与对照组治疗后比较,治疗组治疗后TC、TG与DBP显著下降,HDL-C则显著升高(P<0.05)。结论:普伐他汀对冠心病患者除具有调节血脂作用外,还具有一定降压效应。     

米非司酮固体脂质纳米粒的性状研究

制备并考察了米非司酮固体脂质纳米粒(SLN).结果表明,所得制品呈圆球状,粒径较均匀;x射线衍射分析表明SLN中米非司酮主要以无定形结构为主;差示扫描量热法结果表明,在较高药脂比时,SLN分散系中的药物仍以高分散状态存在.     

基于两样本孟德尔随机化研究血脂水平和子宫内膜异位症之间的关系

目的 采用两样本孟德尔随机化研究,探索血脂水平和子宫内膜异位症之间的因果关系。方法 利用大样本全基因组关联研究(GWAS)汇总数据,选择与各类血脂水平密切相关的遗传位点为工具变量,采用逆方差加权法进行两样本孟德尔随机化分析,以OR值评价各类血脂水平与子宫内膜异位症间的因果关系。结果 除了极小极低密度脂蛋白(VLDL)胆固醇外,其余与VLDL有关的血脂水平升高会增加子宫内膜异位症的发病风险(OR>1)。高密度脂蛋白(HDL)中与胆固醇有关的血脂类型、小低密度脂蛋白(LDL)中总胆固醇水平升高可减少子宫内膜异位症的发病风险(OR<1)。所有与甘油三酯相关的血脂类型、小LDL中胆固醇酯与总脂质比率的升高均可增加子宫内膜异位症的发病风险(OR>1)。结论 多种类型的血脂水平会影响子宫内膜异位症的发生,HDL中与胆固醇或甘油三酯相关的血脂水平可作筛查子宫内膜异位症的生物指标。     

Tear film lipid layer thickness measurement from Ocular Surface Analyzer as a marker to monitor treatment of meibomian gland dysfunction in a study comparing physiological detergent-free eyelid wipes with conventional therapy: A randomized trial

Purpose:To compare the efficacy of physiological, non-detergent eyelid wipes with conventional lid hygiene in patients with meibomian gland dysfunction (MGD).Methods:Fifty participants with MGD were recruited and randomized into two groups. Participants in group I used Evolve Pure™ Eyewipes twice a day to clean the eyelid debris along with standard therapy (antibiotic and lubricants) and participants in group II followed lid hygiene with warm compresses along with standard therapy. Symptoms, ocular surface assessment (lipid layer thickness, tear meniscus height, non-invasive tear film breakup time, and meibography), slit-lamp biomicroscopy (eyelash contamination, meibomian gland blockage, meibomian gland secretion, and meibomian gland telangiectasia) and tear film osmolarity were noted at baseline and 90 days after therapy.Results:Significant improvement in symptoms and signs of MGD was observed in both groups after treatment (P < 0.001); however, the clinical improvement was better with the use of eyelid wipes. Lipid layer thickness increased significantly in group I (P = 0.0006) and group II (P = 0.0002), which was maintained even after adjusting for sociodemographic variables such as age, sex, and severity score of symptoms and signs.Conclusion:Lipid layer thickness of the tear film is a sensitive marker in monitoring response to treatment in patients with MGD. The use of physiological detergent-free eyelid wipes is non-inferior to lid hygiene and warm compresses, which remains the mainstay for treatment of MGD; the clinical improvement with eyelid wipes was noted to be better.     

人载脂蛋白A5基因c.553 G＞T多态性与血脂水平的相关性

目的 分析中国江苏地区汉族人群载脂蛋白A5 c．553G〉T基因多态性与血清脂质水平的关系。方法 用聚合酶链反应-限制性片段长度多态性（PCR—RFLP）技术分别检测199例高三酰甘油血症患者和225例健康对照者载脂蛋白A5C．553G〉T多态性基因型,计算等位基因频率;用生物化学方法检测研究对象的血脂水平。结果 高三酰甘油血症组apoA5 c．553位点T等位基因频率显著高于健康对照组（12．56％ vs 4．67％,P〈0．001）,TT突变型纯合子血清三酰甘油水平较TG杂合子及GG野生型纯合子人群显著升高（P〈0．001）,而血清HDL—C水平则呈下降趋势（P=0．011）。结论 载脂蛋白A5 c．553G〉T基因多态性影响血清三酰甘油水平,与高三酰甘油血症存在一定的关联性。