携蜂毒素基因腺病毒感染对HepG2细胞CD54表达的影响

目的 研究蜂毒素基因转染对肝癌细胞生物学性状的影响。方法 将蜂毒素基因置于甲胎蛋白(AFP)转录调控序列驱动下，用细菌内高效同源重组法将目的基因重组于腺病毒质粒中；将重组腺病毒质粒用PacⅠ酶切线性化后，脂质体介导转染293细胞进行腺病毒的包装。携有蜂毒素基因的腺病毒感染肝癌细胞后，RT-PCR实验观察蜂毒素基因是否可以被转录，流式细胞术检测CD54表达情况。结果 携蜂毒素基因的重组腺病毒载体构建成功；RT-PCR实验表明蜂毒素基因可以得到转录；流式细胞术结果表明，蜂毒素基因转染可以抑制CD54分子的表达。结论 蜂毒素基因转染肝癌细胞后，可改变肿瘤细胞的生物学行为。使其恶性度降低。     

腺病毒介导蜂毒素基因转染对HepG2细胞生长及AFP表达的影响

目的:将蜂毒素基因置于甲胎蛋白(AFP)转录调控元件(rAFP)驱动之下,构件重组腺病毒载体,观察蜂毒素基因转染对肝癌细胞生长及AFP表达的影响.方法::将蜂毒素基因置于rAFP之后,用细菌内高效同源重组法将目的基因重组入腺病毒质粒中,将腺病毒质粒用PacⅠ酶切线性化后,用脂质体介导转染293细胞进行腺病毒的包装.携有蜂毒素基因的腺病毒感染肝癌细胞后,RT-PCR实验观察蜂毒素基因是否发生转录;MTT法测定蜂毒素基因转染对肝癌细胞增殖的影响;ELISA双抗体夹心法定量检测AFP.结果:RT-PCR实验表明蜂毒素基因转染肝癌细胞后可以被转录;蜂毒素基因在rAFP的控制下,可以特异性的抑制AFP阳性肝癌细胞的增殖,并降低其AFP的生成量.结论:蜂毒素基因转染对肝癌细胞的生长及AFP的表达具有抑制作用,可降低其恶性度.     

甲胎蛋白启动子驱动的蜂毒基因对肝癌细胞的特异性杀伤作用

目的：构建携蜂毒素基因及甲胎蛋白(AFP)启动子的重组腺病毒栽体,探讨AFP启动子驱动的蜂毒素基因在体外对肝癌细胞的特异性杀伤作用。方法：采用细茵内高效同源重组法构建携蜂毒素基因及甲胎蛋白(AFP)启动子的重组腺病毒栽体,X-gal染色测定重组腺病毒对肝癌细胞的转染效率,MTT法测定蜂毒素基因转染对AFP阳性、阴性肝癌细胞及正常肝细胞增殖的影响。结果：重组腺病毒对肝癌细胞具有较高的转染率,MTT法证明携AFP启动子和蜂毒素基因重组腺病毒转染后,AFP阳性肝癌细胞的增殖受到明显抑制,而对AFP阴性肝癌细胞及正常肝细胞无明显影响;含巨细胞病毒启动子和蜂毒素基因的重组腺病毒转染,则对AFP阳性及阴性肝癌细胞增殖均有抑制作用。结论：AFP启动子驱动的蜂毒素基因在体外可特异性地杀伤AFP阳性肝癌细胞。     

小鼠CD160胞外段真核表达载体的构建和表达

目的 构建小鼠CD160胞外段的真核表达载体,并稳定转染CHO细胞进行真核表达.方法 从C57BL/6小鼠脾脏中提取总RNA,经RT-PCR扩增CD160胞外段,然后将其克隆到真核表达载体pcDNA3.1和pEGFP-N1两种质粒中,构建重组质粒psCD160和pEGFP-sCD160.重组质粒经双酶切鉴定及测序正确后,用脂质体转染CHO细胞,并用RT-PCR和Western blot检测CD160胞外段的表达,流式细胞术检测重组psCD160与其配体的结合能力.结果 获得长度约为520 bp的小鼠CD160胞外段基因,经测序证实其序列正确.用脂质体将含有CD160胞外段基因的重组质粒载体转染CHO细胞后.RT-PCR和Western blot分析证实转染的CHO细胞可表达重组的psCD160基因,并且表达的可溶性CD160可与其配体结合.结论 成功构建小鼠CD160胞外段基因的真核表达载体,并转染CHO细胞后表达出相应蛋白,为进一步研究CD160胞外段的功能效应奠定实验基础.     

重组腺病毒Ad-sTNFRI-IgGFc转染人气道上皮细胞及其表达的实验研究

目的 构建携带人可溶性肿瘤坏死因子受体I胞外区和IgGFc融合基因的重组腺病毒载体(Ad-sTNFRI-IgGFc),体外转染正常人气道上皮细胞株(HBE135-E6E7),探讨重组腺病毒Ad-sTNFRI-IgGFc转染气道上皮治疗支气管哮喘的可行性.方法 将sTNFRI-IgGFc基因插入腺病毒穿梭质粒pDC316,与辅助质粒pBHGlox△E1,3Crc共转染HEK293细胞,重组产生Ad-sTNFRI-IgGFc,PCR鉴定毒种正确后,进行扩增、纯化和滴度测定,转染培养HBE135-E6E7,流式细胞术检测转染效率,RT-PCR、免疫组化检测转染后细胞中sTNFRI-IgGFc的表达和转录.结果 成功构建了Ad-sTNFRI-IgGFc,感染性滴度达3×1010TCID50/ml,转染后HBE135-E6E7在mRNA和蛋白水平均有sTNFRI-IgGFc表达.结论 构建的Ad-sTNFRI-IgGFc可有效转染HBE135-E6E7,并在其中高效表达,并能拈抗TNF活性,为将表达sTNFRI-IgGFc腺病毒基因治疗哮喘的实验研究提供了基础.     

纳米磁流体介导的重组质粒PEGFP-AFP-hTN Fα对肝癌细胞HepG2的体外杀伤作用

目的探讨纳米磁流体作为肝癌基因治疗载体的可行性及AFP增强子能否使外来基因在AFP阳性细胞内高表达。方法构建重组质粒PEGFP-AFP-hTNFα并通过纳米磁流体分别转染入AFP表达阳性的肝癌细胞HepG2及AFP表达阴性的宫颈癌细胞Hela。转染12h后，于荧光显微镜下动态观察；48h后，RT-PCR和Westemblot分析HepG2细胞中hTNFα基因的表达情况，用MTT法检测HepG2细胞的存活，用流式细胞分析HepG2细胞的凋亡。结果纳米磁流体能将重组质粒PEGFP-AFP-hTNFα转入HepG2细胞，并且其转染效率高于脂质体；RT-PCR及Westemblot证明转染的HepG2细胞有hTNFα基因的表达；MTT及流式细胞分析说明hTNFα基因发挥杀伤细胞作用。结论纳米磁流体能将重组质粒PEGFP-AFP-hTNFα转染HepG2细胞并获得表达，可作为肝癌基因治疗的基因载体。采用AFP增强子可使目的基因在HepG2细胞中定向而特异性表达。     

PEG-PEI／Fe3O4纳米磁流体-TK对肝癌细胞HepG2凋亡的影响

目的:探讨PEG-PEI/Fe3O4纳米磁流体-TK对肝癌细胞HepG2凋亡的影响.方法:构建重组质粒PEGFP-AFP-TK并通过纳米磁流体分别转染入AFP表达阳性的肝癌细胞HepG2及AFP表达阴性的肝癌细胞SMMC7721.转染12 h后,于荧光显微镜下动态观察;48 h后,RT-PCR和Western blot分析HepG2细胞巾HSV-TK基因的表达情况,用MTT法检测HepG2细胞的存活,用流式细胞分析HepG2细胞的凋亡.结果:纳米磁流体能将重组质粒PEGFP-AFP-TK转入HepG2细胞,并且其转染效率高于脂质体;RT-PCR及Western blot证明转染的HepG2细胞有HSV-TK基因的表达;MTT及流式细胞分析说明HSV-TK基因发挥杀伤细胞作用.结论:纳米磁流体能将重组质粒PEGFP-AFP-TK转染HepG2细胞并获得表达,PEG-PEI/Fe3O4纳米磁流体-TK可显著抑制HepG2细胞增殖,可望成为肝癌基因治疗的新型生物制剂之一.     

小鼠轮状病毒EW株VP7基因的克隆及其在重组腺病毒中的表达

目的：构建表达小鼠轮状病毒(EDIM)EW株VP7基因的重组腺病毒，以在小鼠模型上研究轮状病毒的免疫保护机制。方法：用RT-PCR方法扩增EDIM VP7全长cDNA并进行基因序列分析，将所得的VP7基因片段插入腺病毒穿梭质粒pShuttle-CMV，获得重组质粒pShuttleCMV-EVP7，将该质粒与腺病毒骨架质粒pAdEasy-1共转化大肠杆菌BJ5183获得重组腺病毒质粒pAdCMV-EVP7，将该质粒线性化后转染293细胞包装重组腺病毒rvAdEVP7。以rvAdEVP7感染293细胞，并分别应用电子显微镜、PCR、RT-PCR和Western blot等方法观察rvAdEVP7的形态、VP7基因整合、遗传稳定性、VP7基因在细胞内转录及表达等有关生物学特性。结果：获得了小鼠轮状病毒的全长cDNA，重组腺病毒rvAdEVP7具有典型的腺病毒形态，PCR、RT-PCR和Western blot等分子生物学方法分析显示：rvAdEVP7中确有特异性的VP7基因稳定整合；有较好的遗传稳定性；感染293细胞后能有效转录；可表达轮状病毒主要结构蛋白VP7。结论：成功构建含VP7基因的重组腺病毒rvAdEVP7，为进一步研究轮状病毒的免疫保护机制打下了基础。     

重组腺病毒Adeasy-HA117载体的构建及其在K562细胞的表达

目的:构建携带耐药相关基因HA117的高滴度重组腺病毒,转染K562细胞,检测其在K562细胞中的表达情况.方法:用基因工程技术将ATRA相关耐药新基因HA117的cDNA亚克隆至穿梭质粒pAdTrack-CMV上,然后在细菌内与pAdeasy同源重组,后将重组腺病毒Adeasy-HA117经脂质体转染包装细胞HEK293,并收获原代的重组腺病毒Adeasy-HA117,经乒乓交互感染的方法扩增原代腺病毒,应用RT-PCR、荧光显微镜及流式细胞仪鉴定和检测重组腺病毒感染K562细胞后HA117的表达情况.结果:酶切罄定及PCR结果证明ATRA相关耐药新基因HA117重组腺病毒载体构建成功.携带新基因HA117重组腺病毒载体的效价达8.3×1011pfu/mL.RT-PCR检测到转染后K562细胞内HA117的表达.结论:成功获得携带新基因HA117的重组腺病毒,并能使其在K562细胞巾高表达.     

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…     

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.     

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.     

猪肺磷脂注射液联合经鼻持续气道正压通气对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性的影响

目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P＜0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P＜0.05),PaCO2均随观察时间的延长而降低(P＜0.05).观察组治疗有效率为87.5％,显著高于对照组的70.0％ (P ＜0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P＜0.05),且观察组明显低于对照组(P＜0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.