Smad4基因RNAi慢病毒载体的构建与鉴定

目的:构建Smad4基因RNAi慢病毒载体. 方法:针对已经筛选确定的Smad4基因RNAi有效靶序列,合成靶序列的Oligo DNA,退火形成双链DNA,与经Mlu I和Cla I酶切后的pLVTHM载体[含H1启动子和绿色荧光蛋白(GFP)]连接产生LV-shSmad4慢病毒载体,PCR筛选阳性克隆,测序鉴定. 用LV-shSmad4,pCMV-dR8.74和pMD2G 3质粒共转染包装细胞293T细胞,包装产生慢病毒,以293T细胞GFP蛋白的表达水平测定病毒滴度. 结果:PCR和测序证实,成功构建Smad4 shRNA的慢病毒载体LV-shSmad4. 包装慢病毒,浓缩病毒悬液的滴度为5×1010 pfu/L. 结论:成功构建人Smad4基因RNAi慢病毒载体.     

Smad3基因RNAi慢病毒载体的构建与鉴定

目的 构建Smad3基因RNAi慢病毒载体.方法 针对已经筛选确定的Smad3基因RNAi有效靶序列,合成靶序列的Oligo DNA,退火形成双链DNA,与经Age I和EcoR I双酶切后的pGCSIL-GFP载体连接产生GC-shSmad3慢病毒载体,PCR筛选阳性克隆,测序鉴定.用GC-shSmad3、pHelper 1.0载体和pHelper 2.0载体共转染包装细胞293T细胞,包装产生慢病毒,以293T细胞GFP蛋白的表达水平测定病毒滴度.结果 PCR和测序证实,构建出了Smad3 shRNA的慢病毒载体GC-shSmad3.包装慢病毒,浓缩病毒悬液的滴度为3×103TU/ml.结论 成功构建Smad3基因RNAi慢病毒载体.     

凋亡蛋白抑制因子Livin shRNA慢病毒载体的构建与鉴定

目的 构建并鉴定凋亡蛋白抑制因子Livin基因短发夹状干扰RNA(shRNA)慢病毒我体,以便进一步研究Livin的功能.方法 针对已经筛选确定的Livin基因RNAi有效靶序列,合成靶序列的Oligo DNA,退火形成双链DNA,与经Hpa I和Xho I酶切后的pGCL-GFP载体[含U6启动子和绿色荧光蛋白(GFP)]连接、转化,产生pLV-shLivin慢病毒表达载体,PCR筛选阳性克隆,测序鉴定.用pLV-shLivin,pHelper 1.0和pHelper 2.0 3种质粒共转染包装细胞人胚肾293T细胞,包装产生重组慢病毒,以293T细胞GFP蛋白的表达水平测定病毒滴度.结果 PCR和测序证实,成功构建Livin shRNA的慢病毒栽体LV-shLivin.包装慢病毒,浓缩病毒悬液的滴度为3×108TU/ML.结论 成功构建Livin基因sbRNA慢病毒栽体,为应用RNAi研究Livin功能奠定基础.     

KIR2DS2基因RNAi慢病毒载体的构建与鉴定

目的构建携带KIR2DS2基因短发夹状干扰RNA(short hairin RNA,shRNA)的RNAi慢病毒载体.方法针对已经筛选确定的KIR2DS2基因RNAi有效靶序列,合成靶序列的Oligo DNA,退火形成双链DNA,与经HpaⅠ和XhoⅠ酶切后的pSicoR-GFP载体[含U6启动子和绿色荧光蛋白(GFP)]连接产生LV-shKIR2DS2慢病毒载体,PCR筛选阳性克隆,测序鉴定.用LV-shKIR2DS2及Packaging system质粒共转染293T细胞,包装产生慢病毒颗粒,以293T细胞GFP蛋白的表达水平测定病毒滴度.结果PCR和测序证实,成功构建KIR2DS2shRNA的慢病毒载体LV-shKIR2DS2.293T细胞测定病毒滴度为6×108TU/ml.结论成功构建携带KIR2DS2基因短发夹状干扰RNA的RNAi慢病毒载体.     

ABCE1特异性siRNA慢病毒载体的构建与鉴定

目的构建并鉴定ABCE1基因短发夹状干扰RNA（shRNA）慢病毒载体,以便进一步研究ABCE1的功能。方法针对已经筛选确定的ABCE1基因RNAi有效靶序列,合成靶序列的Oligo DNA,退火形成双链DNA,与经BamHⅠ和HindⅢ酶切后的pRNAT-U6.1/GFP载体连接、转化,产生pLV-sh-ABCE1慢病毒表达载体,PCR筛选阳性克隆,测序鉴定。用pLV-sh-ABCE1、pHelper 1.0和pHelper 2.0 3种质粒共转染包装细胞人胚肾293T细胞,包装产生重组慢病毒,以293T细胞GFP蛋白的表达水平测定病毒滴度。结果PCR和测序证实,成功构建ABCE1shRNA的慢病毒载体pLV-sh-ABCE1。包装慢病毒,浓缩病毒悬液的滴度为2×108TU/ML。结论成功构建ABCE1基因shRNA慢病毒载体,为应用RNAi研究ABCE1功能奠定基础。     

TIEG特异的siRNA慢病毒载体的构建及鉴定

目的 构建TIEG基因siRNA慢病毒载体.方法 针对已经筛选确定的TIEG基因siRNA有效靶序列.合成靶序列的Oligo DNA退火形成双链DNA与经BamH Ⅰ和EcoRl酶切后的PshRNA-copGFP-lendvector慢病毒载体[含H1启动子和绿色荧光蛋白(GFP)]连接产生psiRNA-TIEG慢病毒载体,PCR筛选阳性克隆.测序鉴定,用psiRNA-TIEG和病毒包装系统共转染包装细胞293T细胞,包装产生慢病毒,以293T细胞GFP蛋白的表达水平测定病毒滴度;用包装病毒颗粒注射大鼠,通过RealTime-PCK检测大鼠肾组织TIEG mRNA的表达水平.结果 PCR和测序证实,成功构建TIEG siRNA慢病毒栽体psiRNA-TIEG,包装慢病毒,浓缩病毒悬液的滴度为1×10<'5>ifu/μL;实验组大鼠TIEGmRNA的表达水平明显低于对照组(50.7%).结论 成功构建大鼠TIEG基因siRNA慢病毒栽体psiRNA-TIEG.     

人高迁移率族蛋白组A1基因RNA干扰慢病毒载体的构建与鉴定

目的:构建和鉴定人高迁移率族蛋白组A1(HMGA1)基因RNA干扰慢病毒表达载体。方法:针对已经筛选确定的HMGA1基因RNA干扰有效靶序列,合成靶序列的Oligo DNA,退火形成双链DNA,与经HpaⅠ和XhoⅠ酶切后的pGCL-GFP载体(含U6启动子和绿色荧光蛋白)连接产生LV-sh HMGA1慢病毒载体,PCR筛选阳性克隆,测序鉴定。用LV-sh HMGA1慢病毒载体、pHelper 1.0和pHelper 2.0等3种质粒共转染包装293T细胞,包装产生慢病毒,以293T细胞GFP蛋白的表达水平测定病毒滴度。结果:PCR和测序证实,成功构建LV-shHMGA1的慢病毒载体,病毒滴度达5×107TU/ml。结论:人HMGA1基因RNA干扰慢病毒载体的成功构建为进一步应用RNAi技术研究HMGA1基因的功能打下了基础。     

慢病毒介导基于microRNA系统的HBs RNAi技术抑制HBV复制

目的:构建HBs基因RNAi慢病毒载体,观察其对HBV复制和抗原表达的作用。方法:针对已经筛选确定的HBs基因RNAi有效靶序列,合成靶序列的Oligo DNA,退火形成双链DNA,与经MluⅠ和ClaⅠ酶切后的pGCLM-GFP载体连接产生慢病毒载体,PCR筛选阳性克隆,测序鉴定。用pGCLM-GFP、pHelper1.0和pHelper2.0质粒共转染包装细胞293T,包装产生慢病毒,以293T细胞GFP蛋白的表达水平测定病毒滴度。培养HepG2.2.15细胞系,用慢病毒（MOI=1和MOI=10）对肝癌细胞进行感染,感染后细胞培养上清进行ELISA、Western印迹、HBV DNA定量分析。结果:PCR和测序结果证实,成功构建HBs shRNA的慢病毒载体。包装慢病毒后浓缩病毒悬液的滴度为5×108~2×109 TU /ml。慢病毒HBs RNAi后,对HBV复制和抗原表达的抑制作用显著。感染4 d后,抑制效应开始出现,一直持续到第9天,抑制效应达到高峰(P<0.05)。相对于阴性对照,HBs shRNA作用后细胞上清中HBsAg分泌量下降70％以上(P<0.05),而Western印迹和real-time PCR结果进一步证实了上述结果,在蛋白水平和mRNA水平都得到了进一步验证。经HBV DNA定量,发现慢病毒RNAi后DNA水平也显著下降(P<0.05)。结论:成功构建HBs基因RNAi慢病毒载体,以HBs基因为靶点的慢病毒介导的基于microRNA系统的RNAi技术能有效抑制HBV的复制和抗原表达。     

大鼠PEDF基因RNA干扰慢病毒载体的构建与鉴定

目的 构建针对大鼠PEDF 基因的RNA干扰（RNAi）慢病毒表达载体并进行鉴定,探讨PEDF基因对缺血心肌血管新生的影响.方法 构建PEDF基因过表达质粒,测序鉴定.针对PEDF基因不同干扰靶点构建4种RNAi 病毒载体质粒pGCsi-U6/Neo/GFP/shRNA,测序鉴定.过表达质粒和RNAi质粒共转染293T细胞后应用Western blot方法进行外源筛靶确定PEDF基因RNAi 有效靶序列.有效RNAi 病毒质粒和其他3种辅助包装原件载体质粒通过Lipofectamine 2000共转染293T细胞,培养48 h后, 收集细胞培养上清液,将其浓缩后用孔稀释法测定病毒滴度.结果 过表达质粒及4种RNAi质粒构建成功.Western blot外源筛靶显示2个靶点能有效敲减目的基因的表达.PEDF shRNA慢病毒表达载体Serpinf1-RNAi-LV经293T细胞包装成功,收集293T细胞分泌的病毒上清测定浓缩病毒悬液的滴度为2×1012Tu/L.结论 成功构建了PEDF基因的RNAi慢病毒载体,为研究PEDF基因对缺血心肌血管新生的影响打下基础.     

PAK4基因RNAi慢病毒载体的构建与鉴定

目的：构建PAK4基因RNAi慢病毒载体,并对其在涎腺腺样囊性癌细胞株SACC-83细胞中干扰效率进行鉴定。方法：针对PAK4基因RNAi有效靶序列,合成Oligo DNA,退火形成双链DNA,与经AgeⅠ和EcoRⅠ 酶切后的pGCsil-GFP载体连接产生shPAK4i-LV慢病毒载体,PCR筛选阳性克隆,测序鉴定。用shPAK4i-LV载体、pHelper1.0载体和pHelper 2.0质粒共转染包装细胞293T细胞,包装产生慢病毒,以293T细胞绿色荧光蛋白(GFP)的表达水平测定病毒滴度。 结果：PCR扩增出插入片段,测序证实成功构建了PAK4-shRNA慢病毒载体shPAK4i-LV。包装并浓缩慢病毒,滴度为2E+9 TU•mL^-1。将病毒感染SACC-83细胞,real-time PCR检测PAK4的mRNA表达下调70%以上。结论：成功构建了shPAK4i-LV病毒载体并建立了SACC-83-shPAK4i细胞模型,为PAK4在肿瘤信号转导通路中的研究提供工作基础。     

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.