高血压脑出血患者脑组织microRNA表达谱及生物信息学分析

目的 构建高血压脑出血患者脑组织差异表达miRNA,并进行生物信息学分析。方法 选取行高血压脑出血手术患者脑血肿腔壁脑组织标本16例，同期选择重型颅脑损伤且具有高血压病史患者脑组织标本16例作为对照组。通过Trizol法提取标本总RNA,筛选出差异表达的miRNA。利用生物信息学技术分析差异表达miRNA的特点，通过String数据库得到靶基因蛋白互作分析结果，Cytoscape软件进行miRNA-mRNA核心调控网络可视化。结果 实验组与对照组相比较共筛选出差异表达miRNA 43个(P<0.05),其中上调miRNA共7个，下调miRNA共36个。对差异miRNA的靶基因进行KEGG/GO富集分析，得到与高血压脑出血相关的信号通路：cAMP信号通路、ErbB信号通路、Calcium信号通路、Wnt信号通路(P<0.05)。构建miRNA-mRNA可视化网络图，发现关联度最高的miRNA为：hsa-miR-1303、hsa-miR-1972、hsa-miR-362-3p、hsa-miR-101-3p、hsa-miR-378d, PPI蛋白互作分析发现连接度最高的前三个基因为：MAPK1、GRB2和RAC1。结论 差异miRNA可能在自发性高血压脑出血的发病机制中具有重要作用，可能为自发性高血压脑出血的治疗及预防提供潜在治疗靶点及方向。     

基于生物信息学方法预测与多囊卵巢综合征相关的miRNA

目的：基于生物信息学方法构建多囊卵巢综合征(PCOS)表达的miRNA及miRNA靶基因的调控网络。方法：从GEO数据库的GPL16543平台下载miRNA基因芯片数据集GSE72274,用GEO2R筛选差异表达的miRNA,应用在线数据库miRWalk分析预测miRNA差异表达的靶基因。对靶基因进行GO富集分析和KEGG信号通路富集分析。应用Cytoscape软件绘制miRNA及其相关靶基因调控图。通过STRING网站对靶基因进行PPI网络构建,并使用CytoHubba插件进行Hub基因分析。结果：共筛选出差异miRNA一共38个,其中32个上调,6个下调。预测差异miRNA的靶基因得到393个,GO分析发现差异的靶基因主要参与RNA聚合酶Ⅱ启动子对转录的调节、RNA聚合酶Ⅱ启动子对转录的正调节、蛋白结合、金属离子结合、D等生物学过程。KEEG分析表明其主要参与TGF-β信号通路和Hedgehog信号通路。成功构建miRNA相关靶基因调控网络,调控网络中的miRNA包括：hsa-miR-135b-5p、hsa-miR-199a-3p、hsa-miR-32-5p。通过CytoHubba...     

阴虚火旺型OLP差异表达miRNAs靶基因信号通路调控分析

目的:探索口腔扁平苔藓(Oral Lichen Panus,OLP)的中医证候研究方法,探寻阴虚火旺型OLP的miRNAs表达特征,分析实验获得的阴虚火旺型OLP差异表达miRNAs的靶基因信号通路。方法:选取3例阴虚火旺型口腔扁平苔藓患者及3例正常人血液,分离提取miRNA,荧光标记后与miRNA基因芯片杂交,SAM软件筛选阴虚火旺型OLP患者和正常人有表达差异的miRNA,运用Targetscan软件及Kegg和Biocarta数据库分析阴虚火旺型OLP差异表达miRNAs靶基因信号通路。结果:获得5个口腔扁平苔藓特异表达miRNA,3个下调,2个上调,其中hsa-miR-18a miRNA相关的有统计学意义的信号通路共12条(P<0.01);hsa-miR-99bmiRNA基因相关的有统计学意义的信号通路有2条(P<0.05)。结论:基因芯片技术可用于口腔扁平苔藓中医证候研究,hsa-miR-18a上调和hsa-miR-99b下调可能是阴虚火旺型口腔扁平苔藓的标志性mi RNA,并且hsa-miR-18a可能通过12条信号通路调控OLP的发生发展,以及hsa-miR-99b可能通过2条信号通路调控OLP...     

膀胱尿路上皮癌患者血液中微小RNA的表达

目的:通过对膀胱肿瘤患者和非肿瘤患者的血液中微小RNA(microRNA)表达谱的检测,寻找特定的异常表达微小RNA,探讨血液中微小RNA作为膀胱尿路上皮癌早期诊断标记物的价值。方法:将确诊为膀胱尿路上皮癌的6例患者纳入此项研究,另外抽取7名非肿瘤患者血液作为对照组。提取血液中的小分子RNA(smallRNA),并通过高通量测序技术获取膀胱尿路上皮癌患者及对照组血液中微小RNA表达谱,然后利用SPSS17.0的t检验对上述高通量结果进行分析,找出实验组与对照组之间存在差异表达的微小RNA。结果:高通量测序筛选出一部分膀胱尿路上皮癌患者与对照组血液中存在差异表达的微小RNA,其中5个微小RNA上调(hsa-miR-378g、hsa-miR-942、hsa-miR-106a-5p、hsa-miR-142-3p和hsa-miR-374a),另外有许多微小RNA下调。结论:在膀胱尿路上皮癌和非肿瘤人群之间,血液中部分微小RNA的表达可能存在差异。     

芯片技术分析卵巢子宫内膜异位症外泌体microRNA表达差异

目的：探讨卵巢子宫内膜异位症（ovarian endometriosis,OEM）外泌体微小RNA（microRNA,miRNA）的表达谱。方法：采用芯片技术对3例OEM患者及3例健康对照者的在位内膜间质细胞外泌体miRNA进行分析,筛选出组间差异miRNA。结果：获得存在差异表达miRNA共12条,其中hsa-miR-6829-5p、hsa-miR-5188、hsa-miR-4430、hsa-miR-584-5p、hsa-miR-4485-5p、hsa-miR-4257在实验组表达上调,hsa-miR-188-5p、hsa-miR-4741、hsa-miR-4516、hsa-miR-1229-5p、hsa-miR-7150、hsa-miR-5787表达下调。对表达差异较大的外泌体miRNA进行靶基因预测及其基因功能（gene ontology,GO）分析和信号通路（pathway）分析,发现靶基因聚集的生物学功能多数参与生物进展过程的调控。结论：OEM患者与健康对照者的在位内膜间质细胞外泌体miRNA存在着差异性表达。差异性表达的miRNA特异性很高,对进一步阐明该疾病的发病机制和寻找新的诊断标记物具有重要意义。     

唐氏综合征胎盘差异miRNA表达谱分析： 基于全转录组测序分析技术

目的 通过筛选唐氏综合征胎盘中表达变化的miRNAs并分析具体生物学途径来探讨唐氏综合征新的标记物及其分子发病机制。方法 运用全转录组测序分析技术分析唐氏综合征确诊胎盘（DS,n=3）和产前诊断确诊正常胎盘（n=3）样本,筛选出显著差异表达的miRNA,通过miRWalk、Targetscan、miRDB软件预测其靶基因并进行GO和KEGG-Pathway功能富集分析。结果 测序分析共检出82个差异表达的miRNA。DS胎盘组织中有29个miRNA表达上调（变化倍数≥2,P<0.05）,15个miRNA表达下调（变化倍数≥2,P<0.05）;根据表达丰度共筛选出 4 个表达上调的 miRNA,6 个表达下调的 miRNA。其共同靶基因BTBD3、AUTS2均与神经发育相关。GO富集分析结果显示差异表达miRNA的靶基因主要富集到蛋白结合、水解酶活性、金属离子结合、转移酶活性、核苷酸结合、胞质组分、细胞核组分、转录调控、RNA代谢过程调控、DNA依赖性RNA聚合酶Ⅱ启动子转录调控、眼睛发育、感觉器官发育等。KEGG富集分析结果显示差异表达miRNA靶基因主要参与的信号通路包括肿瘤相关信号通路、PI3K-Akt信号通路、Ras信号通路、Rap1信号通路、细胞骨架调控信号通路、嘌呤代谢相关信号通路、P53相关信号通路。结论 miRNAs可能参与了唐氏综合征胎盘损伤和相关的妊娠病理,并可能对其他智力障碍相关疾病提供一定临床思路及对未来的预防治疗发挥重要作用。     

氯吡格雷低反应冠心病患者血小板miRNA表达谱差异

目的：探讨氯吡格雷低反应（clopidogrel low response,CLR）与正常反应的冠心病（coronary artery disease,CAD）患者血小板miRNA表达谱的差异。方法：连续入选78例接受氯吡格雷治疗（负荷剂量300 mg,维持剂量75 mg/d）至少5 d的冠心病患者,通过光学血小板聚集仪检测所有患者二磷酸腺苷诱导的血小板聚集率（platelet aggregation induced by adenosine diphosphate,PLADP）,PLADP大于上四分位数的19例患者为CLR组,小于下四分位数的19例患者为对照组。提取所有入选患者纯化血小板中的总RNA,将上述两组患者的总RNA分别混为2个总RNA池,通过RNA变性电泳质检后,采用高通量测序筛选两组患者血小板miRNA的差异表达谱。通过靶基因预测软件TargetScan、miRanda、PITA和miRWalk对差异miRNA的功能进行预测。结果：两组患者临床基线资料无统计学意义。CLR组PLADP显著高于对照组（P < 0.000 1）。通过RNA变性电泳检测两组总RNA未见明显降解。高通量测序发现95种血小板miRNA表达上存在显著差异,其中显著性下调且差异倍数>2的拷贝数前20 位miRNA依次是hsa?miR?300、hsa?miR?151b、hsa?miR?1299等。通过至少2个靶基因预测软件印证8个miRNA（hsa?miR?188?5p、hsa?miR?6874?3p、hsa?miR?218?5p、hsa?miR?3150b?3p、hsa?miR?1288?3p、hsa?miR?1299、hsa?miR?6862?5p、hsa?miR?4421）对血小板聚集关键蛋白有调控作用。结论：CLR患者中存在血小板miRNA的显著下调,本研究筛选出8个对血小板聚集关键蛋白可能有调控作用的miRNA,可能成为个体化抗血小板治疗提供新的干预手段。     

膀胱尿路上皮癌患者血液中微小RNA的表达

目的：通过对膀胱肿瘤患者和非肿瘤患者的血液中微小RNA（microRNA）表达谱的检测,寻找特定的异常表达微小RNA,探讨血液中微小RNA作为膀胱尿路上皮癌早期诊断标记物的价值。方法：将确诊为膀胱尿路上皮癌的6例患者纳入此项研究,另外抽取7名非肿瘤患者血液作为对照组。提取血液中的小分子RNA（small RNA）,并通过高通量测序技术获取膀胱尿路上皮癌患者及对照组血液中微小RNA表达谱,然后利用SPSS17.0的t检验对上述高通量结果进行分析,找出实验组与对照组之间存在差异表达的微小RNA。结果：高通量测序筛选出一部分膀胱尿路上皮癌患者与对照组血液中存在差异表达的微小RNA,其中5个微小RNA上调（hsa-miR-378g、hsa-miR-942、hsa-miR-106a-5p、hsa-miR-142-3p和hsa-miR-374a）,另外有许多微小RNA下调。结论：在膀胱尿路上皮癌和非肿瘤人群之间,血液中部分微小RNA的表达可能存在差异。     

结肠癌microRNA表达谱检测及生物信息学分析

目的 探讨miRNA(microRNA,微小RNA)在结肠癌组织中的表达特征及生物学功能.方法 选取临床特征相似的3对结肠癌组织及其配对正常黏膜组织,应用Exiqon miRNA芯片检测miRNA在结肠癌及其配对组织中差异表达情况;3个差异表达的miRNA被选取进行qPCR验证;生物信息学分析差异表达的miRNA及其靶向基因在结肠癌进展中的作用机制.结果 芯片结果显示,在3对结肠癌组织中有201个miRNA出现上调表达,94个下调表达(差异倍数>2),差异有统计学意义(P<0.05).qPCR结果显示,与对照组织比较,选取的3个miRNA中hsa-miR-18b-3p、hsa-miR-31-5p在结肠癌组织中表达上调,hsa-miR-142-3p表达下调,与芯片结果一致,差异有统计学意义(P<0.05).GO及pathway分析显示差异表达的miRNA涉及结肠癌细胞的分化、迁移、定位、增生及RNA、蛋白合成等功能调控,与细胞粘附、结肠癌发生发展等信号途径的激活相关.结论 结肠癌组织中miRNA存在异常表达,可能涉及结肠癌的发生、发展.     

Psalmotoxin⁃1抑制活化的肝星状细胞过程中microRNA差异表达谱的变化分析

目的：探讨酸敏感离子通道1a（acid?sensing ion channel 1a,ASIC1a）特异性阻断剂狼蛛毒素（psalmotoxin?1,PcTx?1）抑制血小板衍生生长因子BB（platelet derived growth factor?BB,PDGF?BB）活化的肝星状细胞（hepatic stellate cell,HSC）过程中微小RNA（microRNA,miRNA）差异表达谱及生物信息学分析。方法：取对数生长期的HSC细胞,分为对照组、模型组和PcTx组。对照组不做处理,模型组加入PDGF?BB（10 ng/mL）培养24 h,PcTx组给予PcTx?1刺激1 h后,再加入PDGF?BB（10 ng/mL）培养24 h。采用RT?PCR和Western blot检测α?平滑肌肌动蛋白（α?smooth muscle actin,α?SMA）、Ⅰ型胶原（collagen?Ⅰ）和ASIC1a的表达,MTT法检测细胞增殖情况,验证HSC细胞是否活化以及PcTx?1是否阻断ASIC1a的表达。提取的总RNA质检合格后进行高通量测序,筛选差异表达的miRNA。通过miRanda算法对差异miRNA进行靶基因预测,并对miRNA靶基因进行功能和代谢通路分析。结果：PcTx?1阻断ASIC1a后,ASIC1a的表达降低,HSC细胞活化的标志性基因α?SMA和collagen?Ⅰ的表达明显减少,提示PcTx?1可阻断PDGF诱导的HSC活化。与对照组比较,模型组miRNA表达谱中差异表达miRNA共有38个,其中上调6个,下调32个（P < 0.05）。与模型组比较,PcTx组miRNA表达谱中差异表达miRNA共有17个,其中上调1个,下调16个（P < 0.05）。结论：高通量筛选得到的PcTx?1抑制PDGF?BB活化HSC过程中miRNA差异表达谱,为肝纤维化的发病机制研究提供了新的靶点和思路。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.