非诺贝特对LPC诱导脐静脉内皮细胞增殖、凋亡eNOS基因表达的影响

目的探讨非诺贝特对LPC诱导的脐静脉内皮细胞增殖、凋亡及内皮型一氧化氮合酶(eNOS)基因表达的影响.方法体外培养人脐静脉内皮细胞(HUVECs),根据非诺贝特不同浓度分为正常对照组、LPC组、低浓度非诺贝特(10μmol/L)组、中浓度非诺贝特(50μmol/L)组、高浓度非诺贝特(100μmol/L)组,根据非诺贝特不同干预时间分为正常对照组、LPC组、非诺贝特(50μmol/L)干预6h组、12h组、24h组、48h组进行实验.分别观测不同浓度及不同时间非诺贝特内皮细胞增殖、凋亡、NO浓度及eNOS mRNA表达的变化.结果与正常对照组比较,LPC抑制内皮细胞增殖,促进细胞凋亡,并使HUVECs eNOS mRNA表达降低,NO合成减少.非诺贝特可干预LPC对内皮细胞的作用,使内皮细胞增殖增强,细胞凋亡减少,eNOS mRNA表达升高,NO合成增加,且其作用呈时间-效应、浓度-效应依赖关系.结论非诺贝特可改善LPC对HUVECs的影响,使内皮细胞增殖增强,凋亡减少,eNOS mRNA表达升高,NO合成增加,从而起到抗动脉硬化作用.     

LOX-1介导苯扎贝特对ox-LDL所引起PAI-1表达的影响

目的 探讨苯扎贝特对ox-LDL所诱导HUVECs表达PAI-1的影响及是否通过LOX-1介导.方法 体外培养HUVECs,RT-PCR检测PAI-1 mRNA表达,ELISA法观察PAI-1蛋白含量表达.结果 ox-LDL组,PAI-1 mKNA和蛋白表达明显增加(P<0.05),poly(Ⅰ)组,PAI-1 mRNA和蛋白表达明显减少(P<0.05);不同浓度苯扎贝特组,PAI-1 mRNA和蛋白表达明显减少(P<0.05),组间比较差异有统计学意义,呈浓度依赖关系(P<0.05);Poly(Ⅰ)+100μmol/L苯扎贝特组,与未加poly(Ⅰ)组比较,PAI-1mR-NA和蛋白表达均明显减少(P<0.05).结论 LOX-1介导了ox-LDL所诱导HUVECs PAI-1的表达;苯扎贝特可以下调ox-LDL所诱导的HUVECs PAI-1的表达,呈浓度依赖关系,部分机制可能通过LOX-1介导.     

Effect of combined arsenic trioxide and fenofibrate on epithelial-interstitial transformation and E-cadherin/Snail transformation factor in human pulmonary carcinoma A549 cells

[目的]观察三氧化二砷和非诺贝特单独及联合运用对人肺癌A549细胞上皮间质转化及相关因子E-cadherin、Snail的影响.[方法]体外培养人肺癌A549细胞,根据处理因素不同分为4组,A组:阴性对照组(只含有DMEM培养液);B组:1μmol/L三氧化二砷单药处理组;C组:100μmol/L非诺贝特单药处理组;D组:1μmol/L三氧化二砷+100μmol/L非诺贝特联合处理组.干预A549细胞48h后,分别运用MTT法检测对A549细胞的抑制作用,流式细胞术检测对A549细胞周期的影响,小室侵袭实验检测对A549细胞侵袭能力的影响,半定量RT-PCR检测对E-cadherin、Snail mRNA表达的影响,Western blot检测对E-cadherin、Snail蛋白表达的影响.[结果]与阴性对照组及单药组相比,三氧化二砷联合非诺贝特可以明显抑制A549细胞的活性,其中三氧化二砷组的抑制率为(17.62±0.51)％,非诺贝特组的抑制率为(28.30±0.27)％,而联合组的抑制率为(35.19±0.04)％,差异有统计学意义(P＜0.05).两者联合还可以干扰A549细胞的细胞周期,减弱A549细胞的侵袭能力,3组的侵袭抑制率分别为:三氧化二砷组(50.3±0.15)％,非诺贝特组(56.7±0.57)％,联合组(68.1±0.21)％,差异有统计学意义(P＜0.05).RT-PCR和Western blot检测结果显示,联合组较阴性组及单药组明显上调E-cadherin mRNA及蛋白的表达,下调Snail mRNA及蛋白的表达,差异有统计学意义(P＜0.05).[结论]三氧化二砷联合非诺贝特有明显的增效作用,两者联合可以增加影响人肺癌A549细胞的上皮间质转化的效果,其机制可能与E-cadherin及Snail相关.     

非诺贝特对LPC诱导的人脐静脉内皮细胞增生、凋亡、NO生成及XIAP mRNA表达的影响

目的:探讨非诺贝特对LPC诱导的人脐静脉内皮细胞(HUVECs)增生、凋亡、NO生成及X连锁凋亡抑制蛋白(XIAP)mRNA表达的影响.方法:体外培养HUVECs株CRL-1730,分为正常对照组、LPC组、低浓度非诺贝特组(10 μmol/L)、中浓度非诺贝特组(50 μmol/L)、高浓度非诺贝特组(100 μmol/L).分别观测内皮细胞增生、凋亡、NO生成及XIAP mRNA表达的变化.结果:与正常对照组比较,LPC抑制CRL-1730细胞增生,促进凋亡,降低NO浓度,减弱XIAP mRNA的表达.非诺贝特干预后,CRL-1730细胞增生增强,凋亡减少,NO浓度升高,XIAP mRNA表达增强,且其作用呈时间-效应、浓度-效应依赖关系.结论:非诺贝特可通过促进XIAP表达,干预LPC对HUVECs的影响,使内皮细胞增生增强,凋亡减少,NO浓度升高,从而起到抗动脉硬化作用.     

非诺贝特对心脏成纤维细胞胶原合成的影响及作用机制

目的过氧化物酶增殖物激活受体α(peroxisome proliferator-activated receptor-α,PPARα)具有心血管保护作用,但其对心肌纤维化的影响及作用机制尚不清楚。文中探讨PPARα激动剂非诺贝特(Fenofibrate)对糜酶诱导的心脏成纤维细胞(cardiac fibroblasts,CF)胶原合成的影响及细胞内信号转导机制。方法用胰酶消化法分离、培养新生SD大鼠的CF,采用RT-PCR检测Ⅰ、Ⅲ型胶原mRNA的表达水平,Western blot检测转化生长因子β1(transforming growth factor-β1,TGF-β1)、p-Smad2/3及Smad7的蛋白表达水平。结果①非诺贝特浓度依赖性地抑制糜酶诱导的CF中Ⅰ、Ⅲ型胶原mRNA表达,其中50和100μmol/L组Ⅰ、Ⅲ型胶原mRNA表达水平均较糜酶组显著减少(P<0.01)。②不同浓度的非诺贝特预处理组CF的TGF-β1蛋白表达水平呈浓度依赖性减少,其中50和100μmol/L组均较糜酶组明显减少(P<0.05,P<0.01)。③不同浓度的非诺贝特预处理后,p-Smad2/3蛋白表达水平呈递减趋势,...     

氧化应激对3T3-L1脂肪细胞MCP-1、PAI-1、脂联素表达的影响

目的观察氧化物质第三丁基过氧化氢(t-BHP)对3T3-L1脂肪细胞表达单核细胞趋化蛋白-1(MCP-1)、1型纤溶酶原激活物抑制物(PAI-1)、脂联素的影响初步探讨氧化应激引发脂肪细胞功能障碍的可能作用机制。方法培养3T3-L1脂肪细胞,将其诱导分化为成熟的脂肪细胞,不同浓度t-BHP(100,200,300,400,500μmol/L)作用10min后继续培养。MTT比色法检测24h时3T3-L1脂肪细胞的存活率;荧光定量PCR检测8h时MCP-1、PAI-1、脂联素的表达,Real-time PCR检测t-BHP(500μmol/L,10min)作用于3T3-L1脂肪细胞后不同时间点(2,4,8,12,24h)MCP-1、PAI-1、脂联素的表达。结果 (1)t-BHP对3T3-L1脂肪细胞的存活状态无明显影响;(2)t-BHP可剂量依赖性的降低脂联素而增加MCP-1、PAI-1mRNA的表达;(3)500μmol/L的t-BHP对脂联素、MCP-1、PAI-1的调节具有时间相关性。结论氧化损伤能够促进MCP-1、PAI-1的表达、抑制脂联素的表达,这是其介导脂肪细胞功能障碍的可能机制之一。     

非诺贝特对TNF-α诱导的人脐静脉内皮细胞CD40表达和基质金属蛋白酶活性的抑制作用

目的研究非诺贝特对肿瘤坏死因子-α(TNF-α)诱导的人脐静脉内皮细胞(HUVECs)CD40表达和基质金属蛋白酶(MMP)活性的作用。方法应用RT-PCR和流式细胞仪分别检测非诺贝特对TNF-α诱导的HUVECs的CD40mRNA和细胞表面CD40表达的影响;用明胶酶谱法测定TNF-α对HUVECs的MMP-2、MMP-9活性的影响以及非诺贝特对它们的作用。结果非诺贝特在5×10-5,1×10-4和2×10-4mol/L的浓度范围内能显著降低CD40mRNA和细胞表面CD40的表达(P<0.01),以1×10-4mol/L的非诺贝特的效果最为明显;浓度为2×10-4mol/L时,非诺贝特并没有进一步降低CD40mRNA和细胞表面CD40的表达。非诺贝特能抑制TNF-α诱导的HUVECs中MMP-2和MMP-9活性的增加。结论非诺贝特能降低TNF-α诱导的HUVECs的CD40表达,并且能抑制TNF-α诱导的HUVECs中MMP-2和MMP-9活性的增加。     

非诺贝特对氧化型低密度脂蛋白诱导的脂肪细胞肿瘤坏死因子-α分泌的影响

目的 探讨调脂药物非诺贝特对兔脂肪细胞分泌肿瘤坏死因子-α（TNF-α）的影响及可能机制。方法 取新西兰兔皮下脂肪组织行脂肪细胞原代培养，分别给予不同浓度的氧化型低密度脂蛋白（OxLDL）及非诺贝特刺激。采用酶联免疫吸附法检测脂肪细胞培养液中TNF-α蛋白水平，半定量逆转录多聚酶链式反应测定脂肪细胞TNF-α和PPAR仅mRNA的表达。结果 较低剂量的OxLDL刺激脂肪细胞TNF-α分泌，呈剂量依赖性；不同浓度的非诺贝特呈剂量依赖性降低OxLDL诱导的脂肪细胞TNF-α分泌及mRANA表达，而相应的PPAR仅mRANA的表达则无显著变化。结论 非诺贝特可显著抑制OxLDL诱导的免脂肪细胞TNF-α分泌，这一作用可能有利于胰岛素抵抗的改善。     

三氧化二砷联合非诺贝特对人肺癌A549细胞上皮间质转化及E-cadherin/Snail转化因子的影响

目的观察三氧化二砷和非诺贝特单独及联合运用对人肺癌A549细胞上皮间质转化及相关因子E-cad-herin、Snail的影响。方法体外培养人肺癌A549细胞,根据处理因素不同分为4组,A组:阴性对照组(只含有DMEM培养液);B组:1μmol/L三氧化二砷单药处理组;C组:100μmol/L非诺贝特单药处理组;D组:1μmol/L三氧化二砷+100μmol/L非诺贝特联合处理组。干预A549细胞48 h后,分别运用MTT法检测对A549细胞的抑制作用,流式细胞术检测对A549细胞周期的影响,小室侵袭实验检测对A549细胞侵袭能力的影响,半定量RT-PCR检测对E-cadherin、SnailmRNA表达的影响,Western blot检测对E-cadherin、Snail蛋白表达的影响。结果与阴性对照组及单药组相比,三氧化二砷联合非诺贝特可以明显抑制A549细胞的活性,其中三氧化二砷组的抑制率为(17.62±0.51)%,非诺贝特组的抑制率为(28.30±0.27)%,而联合组的抑制率为(35.19±0.04)%,差异有统计学意义(P<0.05)。两者联合还可以干扰A549细胞的细胞周期,减弱A549细胞的侵袭能力,3组的侵袭抑制率分别为:三氧化二砷组(50.3±0.15)%,非诺贝特组(56.7±0.57)%,联合组(68.1±0.21)%,差异有统计学意义(P<0.05)。RT-PCR和Western blot检测结果显示,联合组较阴性组及单药组明显上调E-cadherin mRNA及蛋白的表达,下调Snail mRNA及蛋白的表达,差异有统计学意义(P<0.05)。结论三氧化二砷联合非诺贝特有明显的增效作用,两者联合可以增加影响人肺癌A549细胞的上皮间质转化的效果,其机制可能与E-cadherin及Snail相关。     

Effect of L-4F on monocyte chemoattractant protein-1 expression in 3T3-L1 adipocytes induced by oxidized low-density lipoprotein

目的 观察载脂蛋白A-I模拟肽L-4F对氧化型低密度脂蛋白(oxLDL)刺激下3T3-L1脂肪细胞分泌表达单核细胞趋化蛋白-1( MCP-1)的影响,并探讨其可能的作用机制.方法 3T3-L1脂肪细胞促分化成熟后,oxLDL(50 μg/ml)刺激脂肪细胞,给予L-4F( 1-50 μg/ml),H-89( 10μmol/L)及H-89+ L-4F(50μg/ml)干预,收集细胞,测定脂肪细胞MCP-1上清液中的浓度和mRNA表达水平,以及脂肪细胞核因子C/EBPα、β的蛋白质水平;改良Boyden小室法检测不同干预组上清液对人外周血单核细胞趋化活性的影响.结果 OxLDL(50 μg/ml)刺激使分化成熟的3T3-L1脂肪细胞表达及分泌MCP-1明显增加,并使得诱导的单核细胞移动距离明显增加.L-4F以浓度依赖的方式减少脂肪细胞MCP-1的表达和分泌,降低单核细胞趋化活性;50 μg/ml L-4F使MCP-1 mRNA的表达降低(91±6)％(P＜0.01).PKA抑制剂H-89(10 μmol/L)干预oxLDL刺激的脂肪细胞后MCP-1 m RNA的表达也显著减少(P＜0.01),但是,在50μg/ml L-4F作用的基础上,H-89(10 μmol/L)的孵育并未使得MCP-1 mRNA的表达进一步降低(P＞0.05).50μg/ml oxLDL刺激对脂肪细胞C/EBPα的含量无明显影响,但增加C/EBPβ蛋白量,且该作用呈时间依赖性;L-4F和H-89干预均降低C/EBPβ的蛋白质含量.结论 OxLDL时间依赖性地诱导脂肪细胞C/EBPβ的蛋白合成,并增强脂肪细胞MCP-1的表达分泌,L-4F以浓度依赖的方式对抗oxLDL的致炎作用,cAMP/PKA-C/EBPβ信号通道可能是L-4F的作用途径之一.     

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.     

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…     

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.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

Luo Lingjie's Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Dr.Zhang Ren's Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.     

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.