雄激素受体反义RNA逆转录病毒载体的构建及其鉴定

目的　构建雄激素受体 (AR)反义RNA逆转录病毒载体pL AR SN并进行包装和鉴定。方法　PCR扩增ARcDNA片段并将之反向插入到逆转录病毒载体pLXSN ,用脂质体法转染PA31 7细胞 ,提取转染细胞基因组DNA和培养上清中重组逆转录病毒RNA ,用PCR和RT PCR法进行鉴定 ,NIH 3T3细胞测定病毒滴度。结果　限制性内切酶分析证明pL AR SN含有反向插入的ARcDNA目的片段 ;培养上清中病毒滴度为 2 .34× 1 0 5 CFU/ml,PCR和RT PCR分别从转染细胞基因组DNA和培养上清中的重组逆转录病毒RNA中扩增出了插入的目的片段。结论　成功构建了AR反义RNA逆转录病毒载体并包装出了高滴度的重组逆转录病毒。     

双基因导入在大鼠乳腺癌细胞内的共表达

目的观察携带单纯疱疹病毒胸苷激酶(HSV—TK)、共刺激因子(B7)基因联合在大鼠乳腺癌细胞的共表达。方法应用基因重组技术。分别构建携带含TK、B7基因的重组GcTKpB7SN，GepB7SN、GeTKpSN逆转录病毒载体．重组载体经包装以病毒上清液感染SHZ一88大鼠乳腺癌细胞，而后进行G418抗性克隆计效，流式细胞、原位细胞杂交检测B17、TK基因表达。结果转染重组GeTKpB7SN、GepB7SN基因的腺癌细胞经泷式细胞仅检测表明有B7基因表达；原位细胞杂交对转染重组GeTKpB7SN、GeTKpSN基因乳腺癌细胞能观察到TK基因表达。结论经逆转录病毒载体介导外源性自杀基因和共稠激因子能在大鼠乳腺癌细胞内共表达。     

HyTK基因转导联合丙氧鸟苷对鼠膀胱癌细胞的体外杀伤作用

目的　探索HyTK基因转导丙氧鸟苷 (ganciclovir,GCV)对鼠膀胱癌细胞的影响。方法　脂质体介导法将PL(HyTK)SN质粒转染PA3 17细胞 ,潮霉素B筛选 ,直到出现抗性克隆 ,扩增培养 ,NIH3T3细胞测定病毒滴度 ,用逆转录病毒上清液感染T73 9细胞 ,潮霉素B筛选 ,直到出现抗性克隆 ,扩增培养 ,命名为T73 9 TK。RT PCR对T73 9 TK细胞进行鉴定。然后观察其在体外膀胱癌细胞的杀伤作用。结果　RT PCR证实HyTK基因已插入T73 9细胞并有其mRNA的表达 ,经不同浓度GCV处理后的T73 9 TK细胞均表现出有杀伤作用 ,而T73 9细胞在各个剂量的GCV作用下生长均良好。结论　GCV对转导了HyTK基因的T73 9细胞有显著杀伤作用     

HSV-tk/GCV系统对人宫颈癌细胞株ME180旁观者效应的研究

目的：研究以逆转录病毒载体介导的HSV－tk/GCV系统对宫颈癌ME180细胞株的旁观者效应。方法：应用脂质体及ploybrene转染技术，将重组逆转录病毒载体PLXSN－HSV－tk，导入PA317包装细胞，以其分泌的逆转录病毒感染宫颈癌ME180细胞（ME），建立ME／TK转化细胞株。观察GCV对ME、ME／TK细胞的存活率及旁观者效应。结果：从病毒滴度、电镜及PCR检查，证实tk基因随病毒的感染已成功地导入PA317及ME180细胞。ME／TK细胞对GCV的敏感性显著高于亲代ME细胞。ME／TK及ME＋ME／TK混合细胞还随GCV浓度的增加受到明显的抑制。ME＋ME／TK混合细胞的存活率，随ME／TK细胞比例的增加而降低，说明TK／GCV系统不但能杀伤tk^ 细胞，也能杀伤未导入tk的细胞，存在明显的旁观者效应。结论：HSV－tk/GCV系统对宫颈癌ME180细胞具有明显的杀伤及旁观者效应。     

恶性肿瘤

981133单纯疙疹病毒胸昔激酶基因转染联合药物对卵巢癌细胞的杀伤效应/梁正东…//中华妇产科杂志一1997,32(8)厂叫一确67一470 目的在于探讨单纯疤疹病毒胸昔激酶(HSV-TK)基因转染联合抗病毒药物经基无环鸟昔(GCv)对人卵巢癌细胞系的杀伤效应。方法:采用基因工程技术,将HSV一仪基因的DNA序列插人逆转录病毒载体PLNSK的HindDI位点,构建重组体PLNS/HSV一仪,并采用磷酸钙介导贴壁细胞基因转染法将重组体导人PA3z:包装细胞,建立重组逆转录病毒载体分泌细胞株PA317/TK。并采用四甲基偶氮哇兰比色法检测HSV~TK/GCV系统对人类卵巢…     

细菌内同源重组法制备腺病毒介导TK基因对肝癌细胞的杀伤作用

目的 探讨用细菌内同源重组法制备含TK自杀基因腺病毒对肝癌细胞的杀伤作用.方法 将TK基因自载体中切出,亚克隆至腺病毒穿梭质粒中,形成质粒pAdTrack-GFP-TK,将其PmeⅠ酶切线性化后与腺病毒基因组质粒pAdEasy-1共转化BJ5183菌,抽提重组体腺病毒基因组质粒DNA,PacⅠ酶切后转染293细胞包装成腺病毒颗粒,观察其对肝癌细胞的感染效率和目的 基因表达情况及肝癌细胞SMMC-7721感染含TK自杀基因腺病毒后加入丙氧鸟苷(GCV)的生存率和旁观者效应的体外观察.结果 纯化所得腺病毒滴度约为2×1012 efu/mL,当病毒感染复数(MOI)=100时,腺病毒感染SMMC-7721细胞的效率＞90%,实验证实在感染重组体腺病毒的细胞中有相应基因产物的表达,SMMC-7721/Ad-TK细胞对GCV高度敏感,半杀伤浓度(IC50)仅为0.2 μmol/L,HSV-TK/GCV系统在SMMC-7721细胞中存在明显的旁杀伤效应.结论 细菌内同源重组法制备重组腺病毒介导的HSV-TK基因能够成功地在体外整合到肝癌细胞SMMC-7721中,并能高效表达,使其对GCV高度敏感.旁观者效应极大地提高了TK基因抗肿瘤活性,使TK基因制剂实际应用于临床治疗恶性肿瘤成为可能.     

含野生型p53cDNA重组逆转录病毒的制备

目的：制备野生型p53cDNA重组体的复制缺陷型逆转录病毒。方法：设计引物PCR扩增野生型p53cDNA，用T－A克隆的方法克隆入质粒载体pGEM-T,转化JM109，提取pGEM-T/p53重组体，双酶切得到野生型p53cDNA,然后再克隆人逆转录病毒表达载体pLXSN,转化感受态大肠杆菌 JM109，筛选pL(p53cDNA)SN重组体，脂质体法转染包装细胞AM12，G－418（geneticin)筛选，收集病毒液。结果：通过PCR和重组质粒酶切筛选出重组阳性克隆，收集含pL(p53cDNA)SN重组体的逆转录病毒。结论：含pL(p53cDNA)SN重组体的复制缺陷逆转录病毒可用于转染真核细胞等进一步研究。     

HSV-TK/GCV系统联合多柔比星对SK-OV-3的杀伤作用

目的 :探讨HSV TK/GCV(单纯疱疹病毒Ⅰ型胸苷激酶 /丙氧鸟苷 (substrateⅠofherpessimplexvirusthymidinekinase/ ganciclovir)系统及其与普通化疗联合用于治疗卵巢癌的可行性 ,研究分子化疗药物GCV与普通化疗药多柔比星 (阿霉素 )联合应用对卵巢癌SK OV 3/TK细胞的杀伤作用。这对于缺乏有效的早期诊断和治疗手段的卵巢癌具有特殊的意义。方法 :将携带HSV TK基因的逆转录病毒重组体 (XM 6 /TK)以磷酸钙共沉淀法导入包装细胞 ,经G4 18筛选获得产病毒的阳性克隆细胞。继而以包装好的复制缺陷型逆转录病毒为运载体将HSV TK基因导入SK OV 3卵巢癌细胞。再经G4 18筛选 ,确定目的基因在靶细胞内稳定表达后 ,观察GCV对细胞的杀伤作用。进一步观察GCV与多柔比星联合应用对SK OV 3/TK细胞的杀伤作用。结果 :HSV TK基因可由重组逆转录病毒导入卵巢癌细胞并能获得稳定表达 ;GCV(10mg·L-1)可明显抑制被转化的卵巢癌细胞 (SK OV 3/TK)的生长 ,对于SK OV 3/TK细胞 ,在单独应用GCV时 ,其最低有效 (质量 )浓度为 10mg·L-1;单独应用多柔比星时 ,其最低有效 (质量 )浓度为 1mg·L-1;而联合应用时 ,GCV 5mg·L-1、多柔比星 0 .2 5mg·L-1对SK OV 3/TK细胞即可产生明显的杀伤作用。结论 :逆转录病毒介导的HSV TK/GCV系统可     

单纯疱疹病毒TK基因介导GCV治疗人RB肿瘤的实验研究

为探讨HSV－TK基因介导的GCV系统对人视网膜母细胞瘤（RB）基因治疗的有效性,利用电穿孔技术把重组逆转录病毒载体pLXSNTK导入包装细胞PA317,筛选出逆转录病毒产生细胞PA317/TK,收获病毒。体外实验：用逆转录病毒感染RB细胞,筛选出含TK基因的RB细胞（RB/TK）,用GCV分别处理RB、RB/TK及不同比例的混合细胞。体内实验：建立人RB裸鼠原位异种移植模型,瘤内注射病毒液后再经GCV处理。结果：体外实验RB/TK细胞对GCV的敏感性显著高于RB细胞,并存在旁观者效应;RB荷瘤裸鼠内TK/GCV系统对RB细胞的生长也有明显的抑制作用。提示HSVTK/GCV系统有望成为人RB肿瘤的基因治疗途径。     

GPC3基因重组慢病毒载体的构建及其在肝癌细胞中的表达

目的 构建含有GPC3的shRNA序列慢病毒表达载体并转染肝癌细胞,观察其转染效率及在肝癌细胞中的表达.方法 应用重组DNA技术,将设计好的GPC3基因特异性siRNA序列构建至慢病毒表达载体pGLV3-GFP上,并应用脂质体法转染293T细胞,进行病毒包装及滴度测定.采用RT-PCR及Western blot分别从mRNA和蛋白水平检测转染HepG2细胞后GPC3基因的表达情况.结果 慢病毒载体构建成功,并测定滴度为1×108TU/mL,转染后,GPC3基因表达明显降低.结论 成功构建GPC3基因的shRNA慢病毒载体,所介导的RNAi能有效抑制靶细胞中GPC3基因的表达.     

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…     

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…