mIL-10重组复制缺陷型腺病毒载体的构建及制备

目的构建小鼠白介素-10(mIL-10)重组腺病毒真核表达载体,为其体外表达及动物体内试验研究提供依据。方法以pORF5-mIL-10质粒为模板通过PCR方法扩增回收mIL-10,将其定向连接到腺病毒载体pSGCMV中,构建pSGCMV-mIL10质粒。此质粒与5型腺病毒质粒pBGHE3通过Lipofectamine 2000共转染至293细胞,经同源重组产生重组复制缺陷型腺病毒Ad5-mIL-10。纯化后Ad5-mIL-10在293细胞大量扩增并通过氯化铯密度梯度离心法纯化,测定其滴度。结果扩增所得mIL-10经酶切鉴定、PCR扩增、DNA测序均证实为小鼠白介素-10,重组腺病毒Ad5-mIL-10经PCR鉴定正确,滴度达2.5×1010pfu/ml。结论成功构建了Ad5-mIL-10重组腺病毒载体系统,为研究IL-10在临床移植中的免疫学作用及基因治疗奠定基础。     

人canstatin基因重组腺病毒载体的构建及其病毒制备

目的:利用HEK293细胞内同源重组法构建带有绿色荧光蛋白报告基因的人血管能抑素(canstatin)重组腺病毒载体,扩增并纯化重组腺病毒颗粒.方法:PCR法扩增cansta-tin全长基因,克隆至pGEM-T载体,经酶切和测序证实后,亚克隆到穿梭质粒pAdS-CMV中,获得穿梭质粒pAdS-CMV/canstatin.用PasI酶单独酶切穿梭质粒pad5-CMV/canstatin和腺病毒E3区带有绿色荧光蛋白表达元件的腺病毒骨架载体,采用标准的磷酸钙方法共转染HEK293细胞.7～10 d后收获细胞裂解物,在HEK293细胞中扩增,病毒颗粒经氯化铯密度梯度离心纯化后,分光光度计检测重组病毒滴度.结果:测序证实pEGM-T/canstatin基因片段与GenBank公布的can-statin基因序列一致.重组腺病毒质粒转染293细胞后24 h观察到绿色荧光,病毒纯化后制备出高滴度重组腺病毒(病毒滴度为2.0×1015pt/L).结论:成功构建了表达canstatin基因的重组腺病毒载体并制备了重组腺病毒颗粒,为研究该基因在肿瘤治疗中的作用奠定了基础.     

血管内皮生长因子基因重组腺病毒载体的构建

目的 :构建携带人血管内皮生长因子基因的重组腺病毒载体。方法 :将人源性的 VEGF1 6 5c DNA正向插入到穿梭质粒 p HCMVSP1A的 CMV启动子之下 ,构建重组质粒 ,通过脂质体与 p JM17共转染 2 93细胞 ,经同源重组获得携带人 VEGF1 6 5基因的重组腺病毒 ,通过 PCR扩增法鉴定所构建的腺病毒 ,扩增、纯化并测定滴度。结果 :人VEGF1 6 5c DNA成功地正向插入到 p HCMVSP1A载体中 ,以重组病毒基因组 DNA为模板 ,同时扩增出 5 76 bp的VEGF1 6 5c DNA基因片段和 86 0 bp的腺病毒骨架基因片段 ,证实了所构建病毒的正确性 ,病毒滴度为 2 .5× 10 9pfu/ m l。结论 :成功构建了表达人 VEGF1 6 5基因重组腺病毒载体 ,使 VEGF基因的高效转染成为可能     

PTEN基因重组腺病毒载体的构建及鉴定

目的构建含PTEN基因的重组腺病毒载体,为PTEN进行肺腺癌的基因治疗奠定基础。方法用PTEN引物VT415和VT416扩增PTEN基因后,分别用EcoRⅠ＋SalⅠ双酶切PCR-PTEN和PSUCMV,回收并纯化PTEN cDNA小片断和PSUCMV的大片断,使两者连接获得含有PTEN基因的重组穿梭质粒载体PSUCMV-PTEN;采用细胞内同源重组方法构建PTEN基因重组腺病毒载体,将质粒PSUCMV-PTEN与含有5型腺病毒右臂的质粒Pbghe3通过Lipofectamine 2000共转染至293细胞,经PCR鉴定,扩增病毒,氯化铯密度梯度离心法纯化浓缩,测定病毒滴度。结果经双酶切和PCR进行鉴定,经鉴定正确的腺病毒命名为VSUCMV-PTEN,TCID_（50）法测定病毒滴度为1.0×10^10pfu/ml。结论成功构建了含PTEN基因的重组腺病毒载体Ad-PTEN,为下一步体内外实验证实PTEN对肺癌的抑制作用研究打下基础。     

细菌内同源重组法快速制备重组腺病毒

目的：探讨细菌内同源重组两步转化法快速构建重组腺病毒质粒和制备重组腺病毒的方法。方法：将腺病毒骨架质粒pAdEasyl转化BJ5183高效感受态,制备pAdEasy-1的大肠杆菌BJ5183感受态,将线性化的腺病毒穿梭质粒pAdtrack—CMV转化至含pAdEasy—1的BJ5183感受态,筛选获得重组腺病毒载体pAdEazy—CMV。获得的重组腺病毒载体线性化后转染HEK293细胞,包装、扩增出重组腺病毒RAdCMV,氯化铯梯度离心法进行纯化,采用电镜负染鉴定重组腺病毒,用荧光显微镜观察绿色荧光蛋白GFP的表达并检测重组腺病毒的滴度。继而用纯化的蘑组腺病毒感染HeLa细胞,测定转染效率。结果：成功构建了重组腺病毒载体pAdEazyCMV,透射电镜和绿色荧光鉴定证实病毒包装成功,并且具有感染力,病毒的滴度呵达2．0×10^10pfu／ml。结论：细菌内同源重组两步转化法可以快速构建重组腺病毒质粒,为后续构建携带不同目的基因的重组腺病毒奠定基础。     

一种重组腺病毒载体产生及操作的新方法

目的建立一种快速、高效的产生腺病毒的实验方法。方法将增强型绿色荧光蛋白(EGFP)装在穿梭质粒，线性化后与腺病毒骨架载体一起电穿孔转染大肠杆菌，使之同源重组，产生病毒基因组质粒。后Pac酶切，脂质体介导转入293细胞以包装出病毒。扩增后收获病毒，氯化铯密度梯度离心纯化，空斑试验测滴度。结果52个大肠杆菌克隆，其中有1个发生同源重组，产生腺病毒基因组质粒pAdEGFP，转染293细胞，荧光显微镜下产生绿色荧光。病毒纯化后达10^11pfu／ml。结论大肠杆菌内质粒间同源重组的方法可以高效、简便、快捷地产生重组腺病毒载体，是一种很好的制备重组腺病毒载体的方法。     

内皮抑素重组腺病毒载体的构建及制备

目的 构建鼠源性内皮抑素(mEndostatin)重组腺病毒真核表达载体,为下一步研究其在体外表达及动物实验研究提供基础。方法 以mEndostatin质粒为模板通过PCR方法扩增回收mEndostatin,并在其5'端引入M-成瘤蛋白信号肽。将mEndostatin连接到腺病毒载体pCA13中,构建pCA13-mEndo表达质粒。将此表达质粒与腺病毒重组质粒pBGHE3通过Lipofectamine 2000共同转染293细胞,经同源重组产生重组腺病毒Ad-mEndo。纯化后重组腺病毒Ad-mEndo在293细胞大量扩增并通过氯化铯密度梯度离心法纯化、测定其滴度。结果 扩增得到的mEndostatin经酶切鉴定、PCR扩增、DNA测序证实为鼠源性内皮抑素,重组腺病毒Ad-mEndo的滴度为6.3×1010 pfu／ml。结论 该实验为今后研究重组腺病毒mEndostatin用于恶性肿瘤的基因治疗打下了基础。     

hTERT启动子驱动的HSV-TK基因重组腺病毒载体的构建和制备

目的构建人端粒酶逆转录酶启动子驱动的HSV-TK基因重组腺病毒的真核表达载体,为进一步研究其在体内外实验提供依据。方法PDC312-TP质粒和PSUCMV-TK质粒经EcoR I,Sal I酶切连接构建PDC312-TP-TK,将质粒PDC312-TP-TK与含有5型腺病毒右臂的质粒Pbhge3通过Lipofectamine 2000共转染至293细胞,经同源重组产生重组腺病毒PSG-TP-TK,PSG-TP-TK在293细胞中大量扩增并通过氯化铯密度梯度离心法纯化,测其滴度。结果质粒PDC312-TP-TK经酶切鉴定正确,扩增得到的PSG-TP-TK经PCR扩增证实为hTERT启动子驱动的HSV-TK重组腺病毒,腺病毒滴度为1.9×1010pfu/ml。结论该实验为重组腺病毒PSG-TP-TK用于肿瘤的基因治疗打下了基础。     

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.