小鼠 T-bet基因重组腺病毒载体的构建

[目的] 构建小鼠 T-bet基因重组腺病毒载体,为 T-bet基因在支气管哮喘治疗中的作用研究提供有效的 T-bet生物表达系统.[方法] 采用内切酶从质粒 T-bet/GFP-RV中切获约 1.7 kb的小鼠 T-betcDNA片段,与穿梭质粒 pShuttle连接,再通过稀有酶切位点将含 T-betcDNA的表达盒与 Adeno-X腺病毒载体骨架连接,构建重组载体 pAdeno-T-bet,测序鉴定无错配及插入移位等 DNA顺序改变,并转染 HEK293细胞,出现 CPE后取含病毒上清的细胞培养液抽提病毒 DNA行 PCR鉴定.[结果] PCR及酶切证实: T-betcDNA正确克隆到穿梭质粒 pShuttle中,带 T-betcDNA的表达盒成功重组到腺病毒载体基因组 E1A缺失区,并在 HEK293细胞中成功包装出具有感染活性的重组腺病毒 pAdeno-T-bet.[结论]本实验成功构建了小鼠 T-bet基因重组腺病毒载体,并在 HEK293细胞中成功包装出重组腺病毒.     

利用Adeasy-1系统构建npcl基因非复制型腺病毒载体并鉴定

目的以复制缺陷的腺病毒为载体,细菌内同源重组法构建有npcl基因的腺病毒载体.方法利用限制性内切酶kpnl HindⅢ从带有朊病毒启动子的质粒prp-pro-mlpcl中切下目的基因npcl-1,克隆至穿梭质粒PAdtrack-CMV,再与PAdeasy-1在大肠杆菌BJ5183中进行同源重组,经抗性筛选和酶切鉴定的质粒再利用脂质体转染人293例细胞中扩增,利用Adeasy-1系统上的绿色荧光蛋白鉴定病毒,RT-PCR鉴定目的基因的表达.结果切酶切鉴定,正确的目的基因片断已克隆至穿梭质粒PAdtrack-CMV;卡那霉素进行抗性筛选及Pac Ⅰ酶切鉴定证实腺病毒重组质粒构建成功.Pac Ⅰ酶切线性化的重组质粒导入293细胞3d后见明显的绿色荧光蛋白表达.回收病毒,可重复感染293细胞,证实有感染能力的病毒颗粒包装成功.结论利用腺病毒载体系统Adeasy-1可构建能成功表达Pac Ⅰ基因的腺病毒载体,为对Niemann pick' s病C型的进一步研究提供了条件.     

人脂联素基因重组腺病毒的构建与鉴定

目的:构建含有人脂联素基因apM1的重组腺病毒载体,制备能表达人脂联素蛋白的重组腺病毒,为脂联素用于体内外干预动脉粥样硬化奠定基础.方法:自质粒pGEM-T-apM1上扩增两端带有Sal Ⅰ和Hind Ⅲ酶切位点的全长apM1基因,将PCR产物和穿梭质粒pShuttle-CMV经Sal Ⅰ和Hind Ⅲ双酶切后,连接、转化、筛选,进行PCR鉴定后送双向测序.将鉴定正确的重组质粒pShuale-CMV-apM1用Pme Ⅰ酶切使其线性化后与腺病毒骨架质粒pAdEasy-1共转BJ5183菌,进行细菌内同源重组,筛选、鉴定、扩增,Pac Ⅰ酶切后用LipoefctaminTM2000转染低代数的HEK293包装细胞,进行包装出毒.结果:重组穿梭质粒pShuttle-CMV-apM1经PCR和测序鉴定正确,与腺病毒骨架质粒pAdEasy-1同源重组成功,转染293细胞进行包装,产生的病毒经鉴定正确,并且无具有复制能力的腺病毒存在,生物安全性高.结论:成功的制备了apM1基因重组腺病毒,可进一步用于脂联素干预动脉粥样硬化的研究.     

腺病毒载体介导的大鼠DNA多聚酶β重组体的构建及其在PC12细胞中的表达

[目的]为探讨DNA多聚酶β在神经细胞损伤中的作用与机制,构建其重组腺病毒载体,并在PC12细胞中表达.[方法]RT-PCR获取大鼠DNA多聚酶β(POLβ)的编码序列,TA克隆测序,酶切POLβ基因并连入穿梭质粒pAdTrack-CMV,电转至含腺病毒pAdeasy骨架质粒的大肠杆菌BJ5183.重组腺病毒质粒(pAd-polβ)和Lipofectamine2000转染293细胞,用重组腺病毒感染PC12细胞.[结果]10个TA克隆中有3个克隆的序列与GENE BANK中大鼠POLβ cDNA序列完全一致,同源重组检测时30个克隆中有8个含目标条带.DNA序列正确的POLβ重组腺病毒质粒转染293细胞后,感染Ad-polβ的293及PC12细胞荧光显微镜下可见绿色荧光,重组腺病毒Ad-polβPCR鉴定含目标条带,Ad-polβ感染PC12细胞Western Blot检测到POLβ蛋白表达.[结论]成功构建了大鼠DNA多聚酶β的腺病毒重组体并在PC12细胞中表达     

含有NURR1基因的重组复制缺陷性腺病毒的构建和鉴定

[目的]构建并鉴定携带NURR1基因的重组复制缺陷腺病毒高效表达载体,为基因调控神经干细胞分化后治疗帕金森病奠定基础.[方法]将测序鉴定正确的NURR1基因插入穿梭质粒pTrack-CMV后,与Adeasy整合,重组Adeasy质粒在肾293A细胞内包装成病毒,PCR鉴定并测定病毒滴度,电镜鉴定病毒颗粒.[结果]成功构建的穿梭质粒pTrack-CMV-NURR1与pAdeasy整合后,重组Adeasy质粒在肾293A细胞内包装和复制时,细胞病变效应(cytopathogeniceffect,CPE)明显,PCR鉴定病毒DNA中有NURR1基因,病毒滴度测试表明病毒含量高,电镜显示病毒为多面体.[结论]成功构建出含有NURR1基因的重组复制缺陷性腺病毒表达载体.     

含AFP启动子腺病毒载体构建的基础研究

[目的]为提高基因治疗载体的靶向性,在现有的溶瘤性腺病毒基础上,应用细菌内同源重组方法构建含AFP启动子和E1A基因的条件复制性腺病毒载体。[方法]应用限制性内切酶以及体外重组技术获取目的片段AFP—AP—IRES—E1Am并进行重组质粒的筛选;将目的片段插入Pshuttle穿梭质粒中;重组的Pshuttle质粒应用PmeI线性化,与含腺病毒骨架DNA、删除了腺病毒E1、E3区的pAdEasyl质粒在BJ5183大肠杆菌细胞中同源重组形成新重组体;抽提重组体DNA,用PacI酶切后,转染至人胚肾细胞株HEk293细胞中进行复制包装,扩增纯化;进行病毒检测。[结果]经用具有Amp抗性及kan抗性的培养板和多种限制性内切酶酶切筛选,证实应用同源重组方法构建了含AFP启动子和目的基因E1A的腺病毒载体;该重组腺病毒可转染HEk293细胞,并进行有效复制。[结论]成功构建了具有特异靶向性的条件复制腺病毒载体,为进一步研究该腺病毒的功能提供了条件。     

HBx和mIL-12双基因重组腺病毒的构建

目的 构建携带双基因HBx和mIL-12的重组腺病毒Ad-HBx-mIL-12.方法 采用酶切、连接的方法分别将基因HBx和mIL-12连接到穿梭质粒载体pAdenoVator-CMV5.将构建正确的穿梭质粒pAdV-HBx-mIL-12经EcoR Ⅰ酶切线性化后,转化于含腺病毒骨架质粒pAdenoVatorΔE1/E3的BJ5183感受态细菌,实现细菌内同源重组.将鉴定正确的重组腺病毒质粒pAd-HBx-mIL-12经Pac Ⅰ酶切线性化后,以脂质体法转染至293细胞,包装并扩增获得携带双基因HBx和mIL-12的重组腺病毒Ad-HBx-mIL-12.结果 经鉴定携带HBx和mIL-12双基因的重组腺病毒构建成功,并可在293细胞中有效表达.结论 成功构建了携带双基因HBx和mIL-12的重组腺病毒Ad-HBx-mIL-12,为探讨其联合抗肿瘤机制及后续基因治疗奠定了基础.     

可共表达骨保护素和碱性成纤维生长因子的复制缺陷型重组腺病毒

目的 构建共表达骨保护素(OPG)和碱性成纤维生长因子(FGF2)基因的复制缺陷型重组腺病毒,为应用基因工程技术联合组织工程技术治疗牙周病的研究打下基础.方法 以双表达质粒pIRES-OPG-FGF2为基础,构建含OPG和FGF2两种基因的双顺反子腺病毒穿梭质粒pSC/OPG-I-FGF2,通过与AdEasy腺病毒系统中的腺病毒骨架质粒进行同源重组获得可共表达两种基因的双顺反子复制缺陷型重组腺病毒质粒,经限制性内切酶线性化,转染复制缺陷型重组腺病毒DNA分子至293细胞.结果 293细胞出现典型病变,RT-PCR鉴定OPG和FGF2基因有转录,Westernblot显示可表达目的 蛋白OPG和FGF2.结论成功获得一株可共表达两种目的 基因的双顺反子复制缺陷型重组腺病毒FGAd/OPG-I-FGF2.     

人NP9基因蛋白重组腺病毒的制备

目的：制备表达人NP9蛋白的复制缺陷型重组腺病毒。方法：酶切pMD18T-NP9质粒获得NP9基因编码区序列并克隆至芽梭载体构建重组pAcTrack-CMV-NP9载体，线性化后与pAdEasy-1共转化BJ5183，通过同源重组得到重组的pAD-NP9病毒载体将重组腺病毒载体转染HEK293包装细胞制备重组腺病毒。结果：酶切鉴定得到阳性pAD-NP9重组腺病毒载体，该载体能有效转染HEK293细胞并在细胞内成功包装，转染3d后可以观察到绿色荧光蛋白(CFP)表达并逐渐增多、增强：结论：成功构建了NP9基因的重组腺病毒载体并制备重组腺病毒颗粒，为进一步研究NP9基因的功能及应用NP9进行基因治疗奠定基础。     

Hyper-IL-6融合基因重组腺病毒的构建及其在肝细胞中的表达

目的 在扩增出融合基因Hyper-IL-6的基础上,构建重组腺病毒Ad-HIL-6.用Ad-HIL-6感染人肝细胞LO2,观察细胞内Hyper-IL-6 rnRNA和蛋白的表达情况.方法 将Hyper-IL-6克隆至穿梭质粒,线性化后与腺病毒骨架质粒在BJ5183细菌内同源重组,构建重组腺病毒质粒.线性化的重组腺病毒质粒转染293细胞,PCR进一步证实重组腺病毒的存在.RT-PCR检测Ad-HIL-6感染LO2细胞后Hyper-IL-6基因的表达情况,Western blot法检测Ad-HIL-6感染LO2细胞后Hyper-IL-6的蛋白表达情况.结果 酶切及PCR鉴定表明同源重组成功,重组腺病毒质粒转染293细胞后可见绿色荧光,感染293细胞得到大量病毒.重组腺病毒Ad-HIL-6能在LO2细胞中表达出Hyper-IL-6基因和蛋白,条带分另q为1600bp和60KD左右.结论 重组腺病毒AdHIL-6构建成功,为以后进行基因治疗奠定基础.     

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.     

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.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Electro-Acupuncture Combined with the Trigger Point Needle-Embedding for Treatment of Primary Trigeminal Neuralgia in 31 Cases

In recent years, the author of this essay has applied electro-acupuncture combined with the trigger point needle-embedding for treatment of primary trigeminal neuralgia in 31 cases, yielding satis- factory results as reported in the following.     

Investigation of Matrix Metalloproteinase -1, 2 and tissue inhibitor of matrix metalloproteinases-1 in Endometriosis

Objective： To explore the role of matrix metalloproteinase-1,2 （MMP-1, MMP-2） and tissue inhibitor of matrix metalloproteinases-1 （TIMP-1） in endometriosis. Methods： The eutopic and ectopic endometria from 40 subjects suffering from endometriosis and regular.endometria from 40 subjects （excluding endometriosis） were collected and examined by in situ hybridization technology and western blot assay. Results： Both expressions of MMP-1 and -2 were stronger in ectopic endometrium and eutopic endometrium than in normal endometrium. On the contrary, the expression of TIMP-1 in ectopic endometrium and eutopic endometrium was lower. The differences were significant （P 〈 0.01 ）. Moreover, there was no relationship among the expressions of MMP-1, 2 and TIMP-1 in ectopic endometrium. Conclusion： The expressions of MMP-1, 2 and TIMP-1 lose balance and lack of periodic changes in ectopic endometrium , which explains the biological invasive behavior of endometriosis. It was suggested-that regulating the balance between the MMPs and TIMP-1 should be an ideal therapeutic target to endometriosis.     

Shi Da-zhuo (史大卓) —An outstanding cardiologist of integrative medicine

Prof. SHI Da-zhuo, Ph.D., male, was born on March 20, 1960. Prof. SHI entered the Ph.D. program in 1990 at the China Academy of Chinese Medical Sciences under the supervision of Prof. CHEN Ke-ji, majoring in the treatment of cardiovascular diseases. After receiving his Ph.D. degree in 1993, Prof. SHI started working at the Cardiovascular Center in Xiyuan Hospital affiliated to China Academy of Chinese Medical sciences.     

Persist in and Carry Forward the Integrative Medical Research——Speech at the 6th National General Congress of Chinese Association of Integrative Medicine by Academician CHEN Zhu,Minister of Ministry of Health

The 6th National General Congress of Chinese Association of Integrative Medicine （CALM） was convened at 19-20, April 2008 in Beijing. Academician CHEN Zhu, the minister of Ministry of Health indicated at the congress that the integration of Chinese and Western medicine is very well in keeping with the situation of our country and the general rule of development in medical science; and as a good integration of Chinese medicine and Western medicine, it is mutually beneficial and advantageous to both of them. Seeing the creativity shown in integrative medical investigation in theoretic and methodological sides, we should and must persist in and develop it.