利用重组人VEGF165制备单克隆抗体的研究

目的：制备抗重组人血管内皮生长因子（VEGF）165单克隆抗体。方法：构建人VEGF165原核表达载体pET-3a/VEGF165,并使其在大肠杆菌中高效表达,纯化表达产物。用初步纯化的rhVEGF165免疫小鼠制成杂交瘤细胞,小鼠腹腔接肿,收集腹水纯化后制成抗rhVEGF165单克隆抗体。结果：VEGF165诱导的内皮细胞增殖可被本研究制备的单克隆抗体中和,并表现出较好的剂量依赖关系。结论：本研究利用DNA重组技术制备人VEGF165,并利用它进一步制备了抗重组人VEGF165单克隆抗体。     

Expression of human VEGF121 cDNA in mouse bone marrow stromal cells

目的构建人VEGF121逆转录病毒表达载体,探讨应用血管内皮细胞生长因子(vascular endothelial growth factor,VEGF)基因治疗骨科缺血性疾患的可行性.方法采用分子克隆技术从pCDⅠ/VEGF121质粒获得hVEGF121cDNA, 并克隆到pLXSN逆转录病毒质粒.经酶切及测序鉴定正确后,包装成为pLXSN/VEGF121重组逆转录病毒, 并进行滴度测定.培养小鼠骨髓基质细胞,用重组病毒感染小鼠骨髓基质细胞.经筛选后,用PCR及RT-PCR方法测hVEGF121cDNA在基质细胞中的整合及转录;用免疫印迹及免疫组化检测VEGF121蛋白的表达;用MTT检测转基因细胞培养上清中VEGF的促人内皮细胞增殖活性.结果经酶切鉴定及基因测序证实重组逆转录病毒质粒正确,包装的病毒滴度为6×105.PCR证实基因组DNA有hVEGF121cDNA的整合;RT-PCR证实有hVEGF121mRNA的转录;Western blot及免疫组化检测有VEGF121蛋白的表达;MTT试验显示转基因细胞培养上清中VEGF121能促进人内皮细胞增殖.结论我们成功地构建了pLXSN/VEGF121重组逆转录病毒载体,该载体不仅能够有效地表达VEGF121蛋白,且表达的蛋白具有促进人内皮细胞增殖的生物学活性,这些均为进一步应用该载体研究VEGF基因治疗骨科缺血性疾患打下了基础.     

利用重组人VEGF165制备单克隆抗体的研究

目的 :制备抗重组人血管内皮生长因子 (VEGF) 16 5单克隆抗体。方法 :构建人 VEGF16 5原核表达载体 p ET- 3a/ VEGF16 5 ,并使其在大肠杆菌中高效表达 ,纯化表达产物。用初步纯化的rh VEGF16 5免疫小鼠制成杂交瘤细胞 ,小鼠腹腔接种 ,收集腹水纯化后制成抗 rh VEGF16 5单克隆抗体。结果 :VEGF16 5诱导的内皮细胞增殖可被本研究制备的单克隆抗体中和 ,并表现出较好的剂量依赖关系。结论 :本研究利用 DNA重组技术制备人 VEGF16 5 ,并利用它进一步制备了抗重组人VEGF16 5单克隆抗体。     

重组人VEGF165工程菌的发酵及表达产物的纯化与活性测定

目的:优化重组人VEGF165(rhVEGF165)工程菌的发酵条件,分离纯化目的蛋白并检查活性.方法:考察了甲醇诱导浓度和诱导时间对目的蛋白表达量的影响;发酵液经离心、透析后,经肝素亲和柱层析、超滤制得纯品;采用CAM实验和血管内皮细胞MTT法测定生物活性,比较了与人VEGF165标准品的免疫原性.结果:最佳表达条件为:甲醇诱导浓度为1%,诱导时间为5～6 d;采用Heparin-Sepharose CL6B亲和层析后,产物纯度可达90%以上;活性测定结果显示,目的蛋白具有促血管生成作用;与人VEGF165具有相似的免疫原性.结论:经发酵纯化后获得了有活性的重组人VEGF165纯品.     

真核双表达载体pIRES-hVEGF121 cDNA/hBMP-4的构建与鉴定

目的构建人血管内皮生长因子(hVEGF121)和人骨形态发生蛋白-4(hBMP-4)的真核双表达质粒,转染COS-7细胞并表达。方法将hVEGF121 cDNA和hBMP-4通过非定向和定向克隆至真核双表达质粒pIRES中,重组质粒pIRES-hVEGF121cDNA/hBMP-4,经酶切鉴定后,转染COS-7细胞,提取总RNA和总蛋白,进行RT-PCR和Western blot检测。结果真核双表达载体pIRES-hVEGF121cDNA/hBMP-4构建成功且hVEGF121cDNA和hBMP-4在COS-7细胞中得到了有效表达。结论hVEGF121和hBMP-4在COS-7细胞中成功表达,为进一步研究打下良好基础。     

血管内皮生长因子、一氧化氮与妊娠期高血压疾病的关系

1血管内皮生长因子与妊娠期高血压疾病的关系 1．1血管内皮生长因子的结构、生物学性质和表达调控血管内皮生长因子（vascular endothelial growth factor，VEGF），是1989年Gospodarowicz等从牛垂体腺泡星状细胞培养液中纯化分离到的一种同型二聚体。其家族包括VEGF—A，VEGF—B，VEGF—C，VEGF—D和胎盘生长因子。研究最多的是VEGF—A。因VEGFmRNA剪接不同，VEGF—A至少形成五种不同长度的多肽：121、145、165、189、206，5种异构体中，以VEGF165在体内表达最丰富。VEGF高亲和力地结合于二种酪氨酸激酶受体。VEGFR-1为fms样酪氨酸激-1（fms—like tyrosine kinase，FLT-1）；VEGFR-2为含有激酶插入区的受体（kinase domain receptor，KDR）。     

人血管内皮细胞生长因子165重组腺病毒的构建及其在真核细胞中的表达

目的:体外构建人血管内皮生长因子165(hVEGF165)的腺病毒表达载体,并检测其在HEK293细胞中的表达。方法:从重组质粒pcDNA3/hVEGF165中获得hVEGF165,经酶切及测序鉴定,将hVEGF165基因亚克隆到穿梭质粒pAdTrack-CMV,重组穿梭质粒经酶切线性化后,与pAEdasyl质粒在大肠杆菌BSJ183中进行同源重组,线性化后转染HEK293细胞进行包装扩增获取重组病毒上清,同时应用RT-PCR及ELISA法检测hVEGF165的表达。结果:目的基因的测序结果与人VEGF165序列(Genbank)相符。转染后经RT-PCR和ELISA检测证实转染重组质粒组hVEGF165 mRNA及蛋白表达,而转染空质粒组及未转染组没有检测到hVEGF165的表达。结论:本研究构建了人VEGF165重组腺病毒表达载体pAd-hVEGF165,并能成功地在HEK293细胞中表达。     

从Hep-2细胞克隆hVEGF165/VEGF121基因及序列分析

目的 从Hep-2(喉鳞癌细胞)克隆hVEGF165、hVEGF121cDNA并重组到克隆载体中，用于下一步构建表达VEGF165、VEGF121的腺病毒载体。方法 设计和合成引物，提取Hep-2细胞的总mRNA，进行逆转录～聚合酶链反应(RT-PCR)，扩增出两个目的cDNA，并将其重组到pGEM-T Easy载体中送测序。结果 从Hep-2细胞的总mRNA中反转录扩增得到588bp和456bp的片段，经重组送测序证实两基因分别与GenBank中的［GI：19909064]及[GI：6631028]提供序列完全一致。结论 从Hep-2细胞我们成功获得VEGF165、VEGF121的cDNA并构建其克隆载体可供进一步研究。     

桥粒芯胶蛋白3前导肽基因的克隆和原核表达

目的：克隆人桥粒芯胶蛋白3前导肽(Dc3p)基因，并进行表达、纯化和鉴定。方法：用PCR法从桥粒芯胶蛋白(Dc)cDNA文库中扩增出Dc3p基因，与pGEX-4T-2载体连接成重组表达质粒pGEX-4T-2／Dc3p；重组质粒转入B121大肠杆菌：经诱导表达谷胱甘肽S-转移酶-Dc3p(GST-De3p)融合蛋白，该蛋白经Glutathione Sepharose4B亲和层析柱纯化，SDS-PAGE和免疫印迹法检测鉴定。结果：经酶切及序列分析鉴定，重组质粒pGEX-4T-2／De3p成功构建，诱导后高表达GST-De3p融合蛋白并得到纯化，免疫印迹法证实表达蛋白为Gsr-Dc3p。结论：获得高表达、高纯度的GST-Dc3p融合蛋白，为De3p的功能及免疫学分析打下基础。     

重组人血管内皮细胞生长因子工程菌高密度发酵工艺研究

目的建立人血管内皮细胞生长因子(BL21/pET-24a/hVEGF121)工程菌的高密度发酵工艺.方法采用发酵罐发酵,对影响工程菌生长及目的蛋白表达的因素如培养基、诱导时间及补料进行优化.结果采用M9复合培养基、活化至对数生长期时诱导4 h以及以甘油为碳源连续流加补料的条件发酵,可使菌体量提高至68 g/L,rhVEGF121的表达量达菌体蛋白总量的23%.结论该发酵工艺提高了工程菌的产量和rhVEGF121的表达水平.     

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.