氧化修饰LDL及VLDL对兔主动脉平滑肌细胞单核细胞趋化蛋白1mRNA表达的作用

单核细胞趋化蛋白１（ＭＣＰ－１）是一种强的单核细胞趋化因子，在体外可由多种细胞分泌，包括血管平滑肌细胞（ＳＭＣ）。本研究采用斑点杂交方法检测了氧化修饰低密度脂蛋白（ＯＸ－ＬＤＬ）、极低密度脂蛋白（ＶＬＤＬ）及氧化修饰极低密度脂蛋白（ＯＸ－ＶＬＤＬ）对培养的兔主动脉ＳＭＣＭＣＰ－１ｍＲＮＡ表达的作用。结果表明，培养的ＳＭＣ可表达ＭＣＰ－１ｍＲＮＡ，而且ＳＭＣ暴露于ＯＸ－ＬＤＬ、ＶＬＤＬ及ＯＸ－ＶＬＤＬ后，其ＭＣＰ－１ｍＲＮＡ表达水平明显增高，分别增高约１１倍、６倍和２０倍。因此我们认为ＯＸ－ＬＤＬ、ＶＬＤＬ及ＯＸ－ＶＬＤＬ可以刺激培养的兔主动脉ＳＭＣＭＣＰ－１ｍＲＮＡ的表达。     

氧化修饰的低密度和极低密度脂蛋白对巨噬细胞单核趋化蛋白表达的影响

探讨氧化修饰的低密度脂蛋白（ＯＸ－ＬＤＬ）和氧化修饰的极低密度脂蛋白（ＯＸ－ＶＬＤＬ）是否能诱导巨噬细胞表达单核细胞趋化蛋白１（ＭＣＰ－１）ｍＲＮＡ和蛋白，以阐明二者在动脉粥样硬化发生中的作用。方法在巨噬细胞的培养基中分别加入２５μｇ／ｍｌ的低密度脂蛋白（ＬＤＬ）、极低密度脂蛋白（ＶＬＤＬ）、ＯＸ－ＬＤＬ和ＯＸ－ＶＬＤＬ，３７℃下温育２４小时，收集巨噬细胞的条件培养基，同时用异硫氰酸胍法提取巨噬细胞总ＲＮＡ。用Ｎｏｒｔｈｅｒｎｂｌｏｔ分析的方法检测巨噬细胞ＭＣＰ－１ｍＲＮＡ的表达，用夹心ＥＬＩＳＡ检测其条件培养基中ＭＣＰ－１蛋白的含量。用微孔滤膜法进行单核细胞的趋化试验。结果当巨噬细胞分别暴露于ＯＸ－ＬＤＬ和ＯＸ－ＶＬＤＬ２４小时后，其ＭＣＰ－１ｍＲＮＡ和蛋白的表达明显增加，同时单核细胞迁移距离的明显增加。而当巨噬细胞分别暴露于ＬＤＬ和ＶＬＤＬ２４小时，其ＭＣＰ－１ｍＲＮＡ和蛋白的表达只有轻微的增加，单核细胞迁移距离亦无明显的增加。结论巨噬细胞能表达ＭＣＰ－１ｍＲＮＡ和蛋白，ＯＸ－ＬＤＬ和ＯＸ－ＶＬＤＬ能诱导该细胞更强地表达ＭＣＰ－１ｍＲＮＡ和蛋白     

低密度脂蛋白对肾小珠系膜细胞,TGF—β和FN mRNA表达的影响

目的：观察低密度脂蛋白（ＬＤＬ）对体外培养的大鼠肾小球系膜细胞（ＭＳＣ）生长及转化生长因子β（ＴＧＦ－β）和纤维连接蛋白（ＦＮ）基因表达的影响。方法：体外培养的ＭＳＣ培养液中加入ＬＤＬ共同孵育,采用＾３Ｈ－ＴｄＲ渗入法检测ＭＳＣ增殖情况,应用Ｎｏｒｔｈｅｒｎ ｂｌｏｔ检测ＴＧＦ－β ｍＲＮＡ、ＦＮ ｍＲＮＡ的表达,应用斑点杂交法检测抗ＴＧＦ－抗体对ＦＮ ｍＲＮＡ表达的影响。结果（１）ＬＤＬ刺激ＭＳ     

氧化型低密度脂蛋白对血管平滑肌细胞基质金属蛋白酶-9表达及细胞增殖的影响

血管中膜平滑肌细胞 (ｖａｓｃｕｌａｒｓｍｏｏｔｈｍｕｓｃｌｅｃｅｌｌ,ＶＳＭＣ)增殖及向内膜下迁移是动脉粥样硬化(ａｔｈｅｒｏｓｃｌｅｒｏｓｉｓ,ＡＳ)、高血压和血管再狭窄等血管疾病共同的病理特征。业已证明 ,ＶＳＭＣ增殖和迁移与细胞外基质 (ｅｘｔｒａｃｅｌｌｕｌａｒｍａｔｒｉｘ ,ＥＣＭ)降解相关联。氧化型低密度脂蛋白 (ｏｘｉｄｉｚｅｄｌｏｗｄｅｎｓｉｔｙｌｉｐｏｐｒｏｔｅｉｎ,ｏｘＬＤＬ)是刺激ＶＳＭＣ增殖和迁移的重要因素之一 ,但其作用是否与促进ＥＣＭ降解有关却罕有报道。本文观察ｏｘＬＤＬ对降解ＥＣＭ主…     

17β-雌二醇对脂蛋白诱导内皮细胞产生炎性细胞因子的影响

目的：研究低脂蛋白（ＬＤＬ）和氧化低密度脂蛋白（ｏｘＬＤＬ）对内皮细胞产生炎性细胞因子白细胞介素６（ＩＬ－６）和肿瘤坏死因子（ＴＮＦ）的影响及１７β－雌二醇对此的作用。方法：经体外培养的人脐静脉内皮细胞（ＨＵＶＥＣ）为模型。将ＬＤＬ、ｏｘＬＤＬ与ＨＵＶＥＣ孵育,及ＨＵＶＥＣ经他莫昔芬（ｔａｍｏｘｉｆｅｎ）和（或）１７β－雌二醇预处理后,再与ＬＤＬ、ｏｘＬＤＬ孵育,检测培养液中ＩＬ－６和ＴＮＦ活性。     

氧化修饰LDL对培养人脐静脉内皮细胞DNA合成和胆固醇酯合成的影响

研究氧化低密度脂蛋白（ｏｘＬＤＬ）对内皮细胞的损伤作用。方法：以胸腺嘧啶核苷（３Ｈ－ＴｄＲ）掺入法和胆固醇酯薄层层析法，观察ｏｘＬＤＬ对培养的人脐静脉内皮细胞（ＨＵＶＥＣ）ＤＮＡ合成和胆固醇酯含量的影响。结果：ｏｘＬＤＬ抑制内皮细胞ＤＮＡ合成，并与浓度及作用时间相关，１００ｍｇ·Ｌ－１的ｏｘＬＤＬ作用２４ｈ的内皮细胞掺入３Ｈ－ＴｄＲ的ｄｐｍ数为不加ＬＤＬ组的４８％（Ｐ＜０．００１），天然ＬＤＬ（ｎＬＤＬ）对ＨＵＶＥＣ掺入３Ｈ－ＴｄＲ也有轻度的抑制作用。ｏｘＬＤＬ降低ＨＵＶＥＣ内胆固醇酯的含量，５０ｍｇ·Ｌ－１ｏｘＬＤＬ孵育的ＨＵＶＥＣ胞内胆固醇酯含量是ｎＬＤＬ组的４２％。扫描电镜发现ｏｘＬＤＬ孵育的ＨＵＶＥＣ形态发生改变，胞间连接减少。结论：ｏｘＬＤＬ对ＨＵＶＥＣ具有细胞毒作用，促发动脉粥样硬化。     

A COMPARATIVE STUDY OF IMOVANE AND ESTAZOLAM TREATMENT ON SLEEP DISTURBANCES

ＡＣＯＭＰＡＲＡＴＩＶＥＳＴＵＤＹＯＦＩＭＯＶＡＮＥＡＮＤＥＳＴＡＺＯＬＡＭ　ＴＲＥＡＴＭＥＮＴＯＮＳＬＥＥＰＤＩＳＴＵＲＢＡＮＣＥＳＬｉＳｈｕｎｗｅｉ（李舜伟）ａｎｄＷａｎｇＣｈａｎｇｈｕａ（王长华）（ＤｅｐａｒｔｍｅｎｔｏｆＮｅｕｒｏｐｓｙｃｈｉ...     

雌激素与内皮细胞凋亡的关系

目的：观察雌激素（１７β－雌二醇）对氧化型低密度脂蛋白（ｏｘＬＤＬ）诱导人脐静脉内衣皮细胞（ＨＵＶＥＣ）凋亡的影响。方法：以ＨＵＶＥＣ为对象,观察不同浓度的１７β－雌二醇（１μｍｏｌ／Ｌ、１０μｍｏｌ／Ｌ和１００μｍｏｌ／Ｌ）对ｏｘＬＤＬ（４μｇ／Ｌ）诱导的凋亡的影响。结果：不同剂量的１７β－雌二醇对使用ｏｘＬＤＬ诱导的ＨＵＶＥＣ凋亡减少７０％～９３％,其抑制呈明显的正向量效关系,１７β－雌二醇１     

反义凝血酶受体基因表达对猪主动脉平滑肌细胞增殖的抑制作用

目的寻找抑制血管损伤后血管内皮增生的有效方法以预防介入治疗后再狭窄的发生。方法利用重组ＤＮＡ技术构建了含有部分反义凝血酶受体（ＡＴＲ）ｃＤＮＡ片段的真核表达质粒ｐｃＤＮＡ３／ＡＴＲ,应用超大球囊损伤及高胆固醇饲喂法建立了小型猪主动脉内皮损伤模型并培养了其主动脉平滑肌细胞（ＡＳＭＣ）,通过３Ｈ－ＴｄＲ掺入及Ｎｏｒｔｈｅｒｎｂｌｏｔ观察ＡＴＲ的表达对猪ＡＳＭＣ增殖及生长因子基因表达的影响。结果ＡＴＲ基因的稳定表达：（１）能抑制ＡＳＭＣ的ＤＮＡ合成（正常猪ＡＳＭＣＤＮＡ合成下降４１．８％,而内皮损伤血管下降５０３％）;（２）能从ｍＲＮＡ及蛋白水平抑制ＡＳＭＣ凝血酶受体基因的表达;（３）能使猪ＡＳＭＣ中ＰＤＧＦＡ链及ｂＦＧＦ的表达明显降低。结论ＡＴＲ可有效地抑制猪ＡＳＭＣ的增殖与凝血酶受体所介导的细胞内信号传导有关。     

A PROSPECTIVE STUDY OF POSTOPERATVE TRANSCATHETER ARTERIAL OILY CHEMOTHERAPY IN HEPATOCELLULAR CARCINOMA

ＡＰＲＯＳＰＥＣＴＩＶＥＳＴＵＤＹＯＦＰＯＳＴＯＰＥＲＡＴＶＥＴＲＡＮＳＣＡＴＨＥＴＥＲＡＲＴＥＲＩＡＬＯＩＬＹＣＨＥＭＯ－ＴＨＥＲＡＰＹＩＮＨＥＰＡＴＯＣＥＬＬＵＬＡＲＣＡＲＣＩＮＯＭＡＨｏｎｇＨｅｑｕｎ（洪鹤群）（Ｄｅｐｅｒｔｒｅｔｏｆｓｕｒｇｅ...     

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.     

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.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.