姜黄素对肠炎大鼠肠黏膜基质金属蛋白酶-9的调控

目的:探索姜黄素对炎症性肠病(IBD)模型大鼠肠黏膜炎症靶点基质金属蛋白酶(MMP)-9的影响.方法:建立以三硝基苯磺酸诱导的大鼠IBD模型.模型大鼠给予含20g/L姜黄素的饲料喂养,药物对照组给予含2 g/L N-乙酰半胱氨酸和5g/L柳氮磺胺吡啶的饲料喂养,模型组及正常对照组给予普通饲料喂养.评价肠炎大鼠死亡率及肠黏膜病理组织学评分.电泳迁移率改变分析法检测肠黏膜胞核NF-κB活性的变化.应用Western印迹分析法检测肠黏膜细胞质IκB.半定量RT-PCR检测MMP-9 mRNA的表达.结果:姜黄素可降低IBD模型大鼠死亡率及改善肠黏膜病理组织学症状.姜黄素可抑制IBD模型大鼠肠黏膜胞质IκB的降解并抑制胞核NF-κB的激活,同时降低MMP-9的表达.结论:姜黄素可预防和改善IBD鼠科模型中的实验性肠炎,调控MMP-9的表达;MMP-9可作为观察抗肠炎药物药效的指标之一,姜黄素对治疗IBD有应用前景.     

姜黄素对模型大鼠肠粘膜炎症因子的调控

目的炎症性肠病(inflammatoryboweldisease,IBD)肠道粘膜炎症与转录因子核因子-κappaB(NF-κB)密切相关。该研究探索NF-κB抑制剂姜黄素IBD动物模型大鼠大肠粘膜炎症因子调控的机制。筛选IBD的靶向治疗药物。方法建立以5%三硝基苯磺酸(5%TNBS)诱导的肠炎大鼠模型,肠炎的大鼠给予含2.0%的姜黄素饲料,药物阳性对照组给予含0.5%柳氮磺胺吡啶(SASP)的饲料,模型组及阴性对照组给予普通饲料。评价病理组织学评分的变化。应用半定量RT-PCR检测炎症因子mRNA的表达。结果姜黄素改善肠炎模型大鼠病理组织学症象。姜黄素可显著抑制肠炎模型大鼠肠粘膜致炎因子IL-1βmRNA的高表达,同时可显著提高抗炎因子IL10mRNA的低表达,抗炎因子IL-4mRNA在各组均未见表达。结论研究显示,NF-κB抑制剂姜黄素可调控IBD鼠科模型中的炎症因子IL-1βmRNA和IL-10mRNA表达。姜黄素有可能是一种有潜能的IBD的靶向药物。     

姜黄素对模型大鼠肠粘膜炎症因子的调控

目的炎症性肠病(inflammatory bowel disease．IBD)肠道粘膜炎症与转录因子核因子-κappaB(NF—κB)密切相关。该研究探索NF—κB抑制剂姜黄素IBD动物模型大鼠大肠粘膜炎症因子调控的机制。筛选IBD的靶向治疗药物。方法建立以5％三硝基苯磺酸(5％TNBS)诱导的肠炎大鼠模型，肠炎的大鼠给予含2．0％的姜黄素饲料，药物阳性对照组给予含0．5％柳氮磺胺吡啶(SASP)的饲料．模型组及阴性对照组给予普通饲料．评价病理组织学评分的变化。应用半定量RT—PCR检测炎症因子mRNA的表达。结果姜黄素改善肠炎模型大鼠病理组织学症象。姜黄素可显著抑制肠炎模型大鼠肠粘膜致炎因子IL-1β mRNA的高表达．同时可显著提高抗炎因子IL10 mRNA的低表达，抗炎因子IL-4 mRNA在各组均未见表达。结论研究显示．NF—κB抑制剂姜黄素可调控IBD鼠科模型中的炎症因子IL-1β mRNA和IL-10 mRNA表达。姜黄素有可能是一种有潜能的IBD的靶向药物．     

TLR-4在炎症性肠病中的表达及临床意义

目的:探讨TLR-4在炎症性肠病(IBD)发病中的作用及临床意义.方法:收集46例炎症性肠病患者肠黏膜标本,通过RT-PCR检测肠黏膜中TLR-4 mRNA的表达量,ELISA检测NF-κB转录活性及ELISA检测血清中IL-8和IL-10的含量.并收集30例健康志愿者作为对照组.结果:UC及CD患者TLR-4 mRNA的表达量明显高于对照组(2.851±0.43及1.87±0.31 vs 0.24±0.1,P＜0.05);IBD患者肠黏膜中NF-κB转录活性明显增强,与对照组比较具有明显差异(P＜0.05);IBD各组血清中IL-8的含量均高于对照组,UC组中IL-10含量明显低于对照组(P＜0.05);同时,UC组患者TLR-4表达水平和IL-8呈正相关,和IL-10呈负相关.结论:TLR-4在IBD中高表达,其可能通过诱导NF-κB活化,增加IL-8的转录和表达和抑制IL-10的表达参与了IBD的发病.     

姜黄素对糖尿病大鼠肾组织NF-κB的DNA结合活性升高的抑制作用

目的探讨姜黄素对糖尿病大鼠肾组织核因子-κB(nuclear factor-κB,NF-κB)的DNA结合活性升高的抑制作用。方法将大鼠随机分为正常对照组(A组)、糖尿病组(B组)及姜黄素治疗组(C组),采用腹腔单剂量注射链脲佐菌素(streptozotocin,STZ)65mg/kg建立糖尿病大鼠模型。治疗组给予姜黄素30mg·kg-1·d-1腹腔注射。实验第4周各组分别宰杀5只大鼠,取部分右肾皮质,采用电泳迁移率改变分析(electro-phoresis mobility shift assay,EMSA)检测姜黄素对糖尿病大鼠肾组织NF-κB的DNA结合活性升高的影响,并观察肾组织的病理变化。结果糖尿病大鼠肾组织NF-κB的DNA结合活性明显升高,姜黄素对其有显著抑制作用,并改善糖尿病大鼠肾脏病变。结论姜黄素通过抑制糖尿病大鼠肾组织NF-κB的DNA结合活性升高而减轻糖尿病大鼠肾脏病变。     

表没食子儿茶素没食子酸酯对炎症性肠病大鼠肠黏膜的保护作用

目的探索儿茶素单体表没食子儿茶素没食子酸酯（EGCG）对炎症性肠病（IBD）模型大鼠肠黏膜的保护作用及机制。方法将72只健康SD大鼠随机分为正常对照组,模型组,药物阳性对照组,大、小剂量（100、50mg／kg）EGCG组及EGCG预处理组,每组12只,以三硝基苯磺酸（TNBS）灌肠制作大鼠IBD模型。灌肠用药2周后,评价各组大鼠肠黏膜病理组织学表现及评分;应用免疫组织化学法和半定量逆转录（RT）＊PCR法分别从蛋白、mRNA水平检测各组肠黏膜细胞环氧合酶（COX）-2表达水平的变化。结果不同剂量EGCG灌肠均能不同程度改善IBD模型大鼠肠黏膜病理组织学征象,其中模型组,EGCG大、小剂量组组织学评分为6．8±1．0、3．6±0．8、4．1±1．0,后两者与模型组相比差异均有统计学意义（均P〈0．05）,均能抑制肠黏膜细胞COX-2的蛋白和RNA表达水平,且与用药剂量呈一定量效关系;其中以EGCG预处理组的效果最好（P〈0．01）。结论EGCG对IBD模型大鼠肠黏膜有保护作用,该作用可能是通过抑制COX-2的活性实现。     

肺虚痰阻大鼠肺组织核因子-κB和环氧合酶-2mRNA的表达

目的:探讨核因子-κB(nuclear factor-kappa B, NF-κB)和环氧合酶-2(cycloxygenase-2, COX-2)在肺虚痰阻大鼠发病中的意义和化痰1号作用的机制.方法:采用二氧化硫烟薰和寒冷刺激建立SD大鼠肺虚痰阻模型,应用免疫组化法检测正常组、肺虚痰阻模型组及化痰1号治疗组大鼠支气管上皮细胞NF-κB的表达及RT-PCR检测肺组织COX-2 mRNA的表达.结果:模型组NF-κB和COX-2 mRNA的表达高于正常组(P<0.01),中药治疗后,NF-κB和COX-2 mRNA的表达明显降低,与模型组比较有显著性差异(P<0.01).结论:NF-κB和COX-2 mRNA的表达升高在痰邪致病中起着重要作用,化痰1号可能通过调节NF-κB和COX-2 mRNA的表达而起到化痰作用.     

银杏叶提取物对大鼠实验性结肠炎NF-κB和ICAM-1表达的影响

目的 探讨银杏叶提取物(EGB)对大鼠实验性结肠炎核转录因子(NF)-KB和细胞间黏附分子-1(ICAM-1)表达的影响机制.方法 利用2,4,6-三硝基苯磺酸(TNBS,150 mg/kg)灌肠制备大鼠实验性结肠炎模型.动物随机分为正常对照组、三硝基苯磺酸模型组、阳性药物对照组(5-氨基水杨酸,5-ASA组,100 mg/kg)和EGB组(200 mg/kg)4组.正常对照组及模型组以生理盐水代替5-ASA及EGB灌胃,每天1次共4周.评估大鼠结肠黏膜大体形态和组织学评分.应用Western印迹分析法检测肠黏膜细胞浆IκBα的变化.免疫组化检测肠组织NF-κBp65和ICAM-1的表达.结果 与正常对照组相比,三硝基苯磺酸模型组大鼠大体形态和组织学评分显著增加,IκBα表达减弱,显著降解,肠组织NF-kB p65和ICAM-1表达明显升高.银杏叶提取物能改善大鼠实验性结肠炎大体形态和组织学评分,抑制大鼠实验性结肠炎肠黏膜胞浆IκBα的降解,抑制NF-κBp65的激活,同时降低了ICAM-1的表达.结论 EGB可减轻大鼠实验性结肠炎炎症损伤,可能是通过抑制NF-κB的激活,进而降低ICAM-1的表达完成的.     

参苓白术散对溃疡性结肠炎大鼠NLRP3、NF-κB、MUC2、TFF3基因表达的影响

目的观察参苓白术散对溃疡性结肠炎(UC)大鼠核转录因子κB(NF-κB)、炎症小体(NLRP3)、黏蛋白2(MUC2)、三叶因子3(TFF3)表达的影响,探讨该药治疗溃疡性结肠炎的作用机制。方法将60只雄性Wistar大鼠随机分为空白对照组、模型组、柳氮磺吡啶(SASP)组、参苓白术散高、中、低剂量组,每组10只。采用三硝基苯磺酸/乙醇灌肠液制备大鼠UC模型,SASP组给予SASP灌胃,参苓白术散各剂量组分别给予不同剂量参苓白术散灌胃,空白对照组、模型组灌服等量生理盐水,连续14 d。取材后采用real-time PCR检测各组大鼠结肠黏膜NLRP3、NF-κB、MUC2、TFF3 mRNA表达情况。结果参苓白术散可以明显下调NLRP3、NF-κB mRNA表达(P 0. 05),上调MUC2、TFF3 mRNA表达(P 0. 05),以中剂组效果最佳。结论参苓白术散可减轻肠黏膜炎症反应,促进结肠黏膜损伤修复,其机制与下调肠黏膜NLRP3、NF-κB mRNA表达,上调肠黏膜MUC2、TFF3 mRNA表达有关。     

姜黄素对新生大鼠坏死性小肠结肠炎模型NF-κB,TNF-α及IL-6表达的影响

目的：探讨姜黄素作用于新生大鼠坏死性小肠结肠炎（NEC）模型的疗效、抗炎作用及其机制.方法：经人工喂养、缺氧复氧冷冻及脂多糖灌胃后建立NEC动物模型.实验分为正常对照组（A组）、NEC模型组（B组）、姜黄素干预组（C组）及溶剂组（D组）.各组于第4日处死大鼠,取近回盲部肠组织做病理切片,采用HE染色观察组织学变化并做组织损伤评分;免疫组化法检测NF-κB的表达.其他肠组织制备组织匀浆取上清用ELISA法检测肿瘤坏死因子α（TNF-α）和白细胞介素-6（IL-6）的含量.结果：A,D组大鼠无NEC症状,B组大鼠出现典型的NEC症状,C组大鼠与B组相比NEC症状出现的较晚、较轻.B组与A,D组相比肠组织病理学评分及NF-κB,TNF-α,IL-6的表达显著增高（P〈0.01）;C组与B组相比表达显著降低（P〈0.05）.结论：姜黄素对NEC大鼠具有保护作用,其机制可能是通过抑制NF-κB,TNF-α及IL-6的表达从而发挥抗炎效应.     

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.     

CLINICAL SIGNIFICANCE OF SERUM CYTOKINES IL-1β,sIL-2R,IL-6,TNF-α,AND IFN-v IN ACUTE CORONARY SYNDROME

Objectives To explore serum cytokines levels (including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v) and their significance in patients with acute coronary syndrome (ACS) and the subsequent follow-ups, with attempt to estimate the role of various serum inflammatory markers in the diagnosis and assessment of ACS.Methods The study population include 40 patients with acute myocardial infarction (AMI), 40 patients with unstable angina pectoris (UAP), and 40 controls. Among the 80 patients, 60 patients attended a follow up 4 months later. Serum inflammatory markers including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v were measured by enzyme linked immunosorbent assay.Results Serum IL- 1 β, sIL-2R, IL-6, TNF-α were significantly higher in AMI group or UAP group compared to the control group and became significantly lower 4 months later in the follow-up patients. Serum levels of IFN-v shows no significant difference between AMI group or UAP group and controls, also showing no significant change when measured in follow up patients. There was no correlation between serum creatine kinase-MB isoenzyme levels and serum inflammatory markers either in UAP or AMI group. Furthermore, when divided into two subgroups using Wagner's QRS scoring system in the AMI group, there is no difference of each serum inflammatory marker between ≤ 6 scores group and ＞ 6 scores group.Conclusion Serum levels of certain inflammatory markers may have some diagnostic value for ACS, and can be a useful marker reflecting disease stability.