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。     

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。     

硬脂酸纳米吗啡用于硬膜外镇痛的实验研究

目的 观察硬脂酸纳米吗啡(SLN-M)单次注入大鼠硬膜外腔后的镇痛效应.方法 选择硬膜外置管后无神经损伤症状的SD雄性大鼠50只,随机均分为五组.A组(假给药组):经硬膜外腔给予硬脂酸纳米(SLN);B1组与B2组:分别给予0.2及1 mg普通吗啡;C1组与C2组:分别给予含0.2及1 mg吗啡的SLN-M.用药后测定热痛阈值评价镇痛效果,以最大镇痛效应(MPE)表示,以SpO2、角膜反射的变化、僵直症的发生率对药物不良反应进行评估.结果 B1与C1组及B2与C2组的MPE最高值差异无统计学意义.但随时间延长,B1与B2组MPE逐渐下降,12 h后开始显著低于C1与C2组(P＜0.05).B1与B2组达到MPE最高值的时间显著快于C1与C2组(P＜0.05),但持续时间显著缩短(P＜0.05).B1与B2组SpO2显著低于C1与C2组(P＜0.05),角膜反射的变化和僵直症的发生率要高于C1与C2组(P＜0.05),且与吗啡剂量呈正相关.结论 硬膜外腔单次给予SLN-M后可达到与普通吗啡一样的镇痛效果,有效镇痛时间明显延长,不良反应显著降低.     

Reduction of oocyte lipid droplets and meiotic failure due to biotin deficiency was not rescued by restoring the biotin nutritional status

BACKGROUND/OBJECTIVESOocyte lipid droplets play a crucial role in meiosis and embryo development. Biotin is associated with fatty acid synthesis and is the coenzyme for acetyl-CoA carboxylase (ACC). The effects of a biotin deficiency on the oocyte lipid metabolism remain unknown. This study examined the effects of a biotin deficiency and its replenishment on murine 1) oocyte lipid droplet levels, 2) ovary lipid metabolism, and 3) oocyte meiosis.MATERIALS/METHODSMice were divided into 3 groups: control, biotin deficient (BD), and recovery groups. The control and BD groups were fed a control diet or BD diet (0.004 or 0 g biotin/kg), respectively. The recovery group mice were fed a BD diet until day 21, and were then fed the control diet from days 22 to 64. This study then quantified the oocyte lipid droplet levels, assessed the oocyte mitochondrial function, and examined the ability of oocytes to undergo meiosis. Ovarian phosphorylated ACC (p-ACC), lipogenesis, β-oxidation, and ATP production-related genes were evaluated.RESULTSThe BD group showed a decrease in lipid droplets and mitochondrial membrane potential and increased p-ACC levels. In the recovery group, the hepatic biotin concentration, ovarian p-ACC levels, and mitochondrial membrane potential were restored to the control group levels. On the other hand, the quantity of lipid droplets in the recovery group was not restored to the control levels. Furthermore, the percentage of oocytes with meiotic abnormalities was higher in the recovery group than in the control group.CONCLUSIONSA biotin deficiency reduced the oocyte lipid droplet levels by downregulating lipogenesis. The decreased lipid droplets and increased oocyte meiosis failure were not fully restored, even though the biotin nutrition status and gene expression of lipid metabolism was resumed. These results suggest that a biotin deficiency remains robust and can be long-lasting. Biotin might play a crucial role in maintaining the oocyte quality.     

六味地黄汤加减治疗老年阴虚阳亢型高血压60例

目的:观察六味地黄汤加减治疗老年阴虚阳亢型高血压的临床效果。方法:选取阴虚阳亢型老年高血压患者117例,随机分为对照组57例和治疗组60例。对照组给予苯磺酸氨氯地平片口服治疗,治疗组给予六味地黄汤加减治疗。结果:对照组有效率为78.9%,治疗组有效率为91.7%,治疗组优于对照组(P0.05);治疗组治疗后舒张压、收缩压、C反应蛋白、总胆固醇、低密度脂蛋白、三酰甘油水平均优于对照组(P0.05)。结论:六味地黄汤加减治疗老年阴虚阳亢型高血压疗效显著。