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。     

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。     

应用E1区缺陷载体构建携带SEA基因的选择性腺病毒

目的:构建由端粒酶启动子(hTERT)调控的携带超抗原金黄色葡萄球菌肠毒素A(staphylococcus aureus enterotoxin A,SEA)基因的选择性复制重组腺病毒.方法:应用酶切、连接方法将hTERT连接于腺病毒穿梭质粒E1A和E1B序列之前调控E1A和E1B蛋白的表达,CMV启动子和SV40分别...     

一种有效的体外连接法构建heNOS重组腺病毒

目的：探讨一种新的有效的体外连接方法构建重组腺病毒转移载体。方法：将目的基因heNOS(人内皮型一氧化合酶)亚克隆到穿梭质粒pShuttle启动子CMV的下游，再通过Ⅰ-CeuⅠ和PI—Sce Ⅰ两个稀有酶切位点，将目的基因heNOS与腺病毒质粒DNA(pAdeno—X)进行体外连接，获得含目的基因heNOS重组腺病毒质粒DNA，后经限制性内切酶PacⅠ切割后，两端露出反向末端重复序列(ITR)，利用脂质体转染293细胞．获得含目的基因重组腺病毒上清。PCR双引物检测含有目的基因heNOS片段。结果：PCR双引物检测含有目的基因heNOS片段，表明利用体外连接法成功构建了含目的基因heNOS重组腺病毒转移载体。结论：体外连接法是一种有效的复制缺陷型重组腺病毒构建方法。     

神经干细胞特异性调控启动子研究

目的研究神经干细胞特异性调控启动子。方法 PCR扩增出小鼠nestin基因启动子全序列(4 000 bp)、核心序列(400 bp)和内含子-2;以pcDNA3.1为模板,构建6种重组质粒,分别用CMV、CMV+内含子-2、nestin基因启动子全序列、nestin基因启动子全序列+内含子-2、nestin基因启动子核心序列、nestin基因启动子核心序列+内含子-2作为启动子调控报告基因EGFP表达;6种重组质粒分别转染nestin~+、nesti~-细胞,荧光显微镜下观察转染后细胞内EGFP表达,同时采用流式细胞仪法测定表达EGFP细胞表达率。结果 nestin基因启动子全序列及核心序列都能非特异性调控EGFP基因在细胞内表达,并且具有较强调控能力,与内含子-2融合后,只能特异性调控EGFP基因在nestin~+细胞表达,而CMV启动子与内含子-2序列融合只具有非特异性调控能力。结论 nestin基因启动子全序列与内含子-2协同调控外源基因在nestin~+细胞特异性表达。     

含HSV-TK基因的真核表达载体的构建及其在HepG2细胞中的表达

目的　构建AFP增强子CMV启动子调控下的HSV -TK真核表达质粒用于肝细胞癌的靶向基因治疗。方法　采用PCR方法从HepG2细胞基因组DNA中扩增AFP基因增强子最小的功能片断 ,插入pcDNA3.1-LUC质粒的BglII位点 ,从而构建重组表达质粒 pAFP -LUC。HSV -TKcDNA全长序列替换pAFP -LUC质粒中EcoRI位点的LuciferasecDNA全序列构建重组表达质粒 pAFP -TK。质粒 pAFP -LUC采用脂质体法转染AFP阳性的肝癌细胞系HepG2及AFP阴性的非肝癌细胞系HeLa ,用Luciferase分析试剂盒分析Luciferase的表达情况。结果　PCR扩增所得AFP增强子片段的长度和序列通过琼脂糖凝胶电泳、DNA测序得到证实。采用限制性内切酶酶切及PCR方法证实质粒pAFP -LUC中插入的AFP增强子大小、位置及方向均正确。酶切后凝胶电泳分析证实HSV -TK已成功地定向克隆入真核表达载体中。Luciferase报道基因的表达受AFP增强子的调控 ,在AFP阳性肝癌细胞HepG2中高效表达 ,而在AFP阴性的HeLa细胞中表达很低 ,这种差异具有显著性 ,P <0 .0 5。结论　AFP增强子CMV启动子调控的HSV -TK真核表达质粒的构建及其在HepG2细胞中的特异性表达为肝细胞癌的靶向基因治疗提供了实验基础。     

含人乳癌DF3/MUC1启动子转录调控序列和白喉毒素A链基因表达载体的构建

目的：构建含人乳癌DF3／MUC1启动子转录调控序列和白喉毒素A链(DTA)基因的重组表达载体。方法：利用PCR技术从人乳癌细胞MCF-7中扩增出DF3／MUC1启动子的转录调控序列并克隆入pMD18T载体中，再从pMD18T-DF3重组质粒中切下DF3／MUC1启动子的转录调控序列并亚克隆入pGL3-Basic载体，构建重组质粒pGL3-DF3。从质粒pIBI30-DTA中切下DTA片断，以DTA基因替换重组质粒pG13-DF3中的虫荧光素酶基因，构建重组质粒pGL3-DF3-DTA。结果：构建了含人乳癌DF3／MUC1启动子转录调控序列和DTA的表达载体，酶切和测序结果与预期完全相符。结论：重组质粒pGL3-DF3-DTA构建成功。     

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…     

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.     

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.     

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.     

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.     

Survey and practice of reporting quality of randomized controlled clinical trials on traditional Chinese medicine

Evidence obtained from randomized controlled trials （RCTs） has been generally accepted as the gold standard in the evaluation of clinical effectiveness. Readers need to understand the trial design, implementation, results, analysis and interpretation, so as to fully Jnderstand the results of RCTs. Thus, the investigators of RCTs have to report these items in a complete, accurate and clear manner. Since 1998, we have conducted several evaluations on the reporting quality of RCTs published in Chinese journals on traditional Chinese medicine （TCM） and results have shown that there is an urgent need for higher quality RCTs on TCM.     

TCM Treatment of Ankylosing Spondylitis by Tonifying the Kidney and Strengthening the Governor Vessel

Ankylosing spondylitis is a chronic and progressive disorder with inflammation mainly involving the central axis joints. It mainly affects the cervical spine and the lumbosacral area, with the pathogenesis closely related to the kidney and the Governor Vessel (GV). TCM holds that the syndrome is deficiency in origin and excess in superficiality, which is due to insufficiency of the kidney, deficiency of GV, and blocking of the channels with the invasion of exogenous evil, leading to poor circulation of qi and blood and malnutrition of the bones, muscles and joints. The TCM method of tonifying the kidney and strengthening GV to regulate circulation of qi and blood and check the arthralgia pain should be adopted, with the Kidney-Tonifying and GV Strengthening Decoction (益肾强督汤) prescribed.     

IMPROVING P-gp EXPRESSION IN HUMAN MONONUCLEAR CELLS IN VITRO TRANSFECTED BY MULTIDRUG RESISTANCE-1 mRNA

CHEMOTHERAPY playsa greatrolein the treat- ment of malignanttumors,especiallyingynecolo- gicalones.But inanticancerchemotherapy,leuko-cytopeniaisfrequentlytheprimarydose-limitingsideeffect factor.Moreover,cancersarefrequentlychemoresistantbe-causeof overexpressionof P-glycoprotein(P-gp), which isencodedby multidrugresistancegene (MDR1 ) and detectableinup to50% ofhuman cancersand renderscellsresistancetoanticancerdrugs.The safetyand potentialtherapeuticbenefitof mdr1 gene transferredto h…