Objective To construct pSUPER-SVV vector and obtain its expression in HeLa cells,in order to interfere the expression of survivin.Methods Oligonucleotide sequences specific for survivin were designed for RNA interference(RNAi),after annealed they were ligated to pSUPER.basic vector.After sequencing,the vector of pSUPER-SVV was transfected into HeLa cells by LipofectAmine.The expression of survivin was detected by RT-PCR and FCM.Results The RNAi expression vector of survivin was constructed successfully,which depressed the expression of survivin efficiently.Survivin was significantly depressed on the level of mRNA in HeLa cells compared with the control groups(P

Coronary Restenosis ; etiology ; Humans ; Male ; Middle Aged ; Myocardial Infarction ; therapy ; Stents ; Thrombosis ; etiology

The compound that distributes in the herbs with one common effect was named as "co-effect compound" (CEC). The CECs of three traditional Chinese medicine(TCM) effects, purgative, relieving pain and clearing heat, had been found and studied. A strong corresponding relationship was found between the pharmacological activities of CECs and the TCM effect they belong to. The study shows that it may be a feasible method to connect traditional effect of TCM with modem pharmacological activity.
Anthraquinones ; isolation & purification ; pharmacology ; Anti-Inflammatory Agents, Non-Steroidal ; pharmacology ; Cathartics ; pharmacology ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Flavonoids ; isolation & purification ; pharmacology ; Medicine, Chinese Traditional ; Plants, Medicinal ; chemistry

Objective To assess the safety and efficacy of domestic sirolimus-eluting stent(SES)compared with bare metal stent(BMS)in the primary percutaneous coronary intervention(PCI)for patients with ST-segment elevation AMI in a real-world scenario.Method From January 2005 to March 2006,a total of 143 patient with ST-segment elevation AMI were enrolled in this study,and all of them underwent primary percutaneous coronary intervention(PCI).Among the 143 patients,74 were treated with domestic SESs(Firebird stent)and 69 with BMSs.The incidence of major adverse cardiovascular events(MACE:death,reinfarction,and target vessel revascularization[TVR])was evaluated at 30 days and 180 days.Continuous variables were compared using Student's unpaired t test.Categorical variables were compared using Fisher's test.Cox proportional hazard survival models were used to assess risk reduction of adverse events.P value

Objective The application of laboratory information system (LIS) increases extensively. The objective is to expatiate how to widen the application of LIS so that it can be seamlessly combined with HIS, and play a greater role in quality control of clinical laboratory. Methods A consummate and compact working process was designed. A bidirectional communication from equipment to client was established. Module modes and prefect security systems were set up. Results With the existing HIS network environment, corresponding bar codes were generated through the examination applications from the doctor's workstation. At the same time, patients' basic information and test information were generated based on the bar code. In this way, the seamless combination of LIS and HIS were achieved. The switch of the functional module was simple, efficient and easy to maintain. The internet version Kaspersky antivirus software was used in the area of security. Database were backed up automatically and regularly. Authority was strictly defined for operators in different level. Conclusion Through the current application in our section, LIS has already been an essential part in the process to become a modern hospital.

Adult ; Coronary Aneurysm ; complications ; pathology ; Coronary Thrombosis ; complications ; Humans ; Male

In order to improve the poor photostability of nifedipine, this study designed a cocrystal based on the principles of crystal engineering and prepared nifedipine-imidazole cocrystal by suspension method. The new cocrystal was characterized by powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC), thermogravimetric analysis (TG) and infrared spectroscopy (IR) to confirm the formation of the cocrystal. The photostability of nifedipine and its cocrystal was measured by powder X-ray diffraction and high-performance liquid chromatography (HPLC). The results showed that the nifedipine-imidazole cocrystal improved the photostability of nifedipine to a certain extent. This study provides guidance for the development of nifedipine cocrystals and the improvement of its druggability.

Objective　To investigate the molecular regulation of G1 arrest of mouse thymocytes induced by ionizing radiation. Methods　Cell cycle was analyzed by flow cytometry (FCM) following staining of cells with proidium iodide. Fluorescent staining and flow cytometry analysis were employed for measurement of protein expression. Results　It was demonstrated that G1 phase of mouse thymocytes increased significantly at 12h after whole body irradiation (WBI) with the doses of 0.5, 1.0 and 2.0 Gy, and at 24h following 2.0Gy exposure, measured by FCM. In the time course experiment, it was found that G1 phase of thymocytes increased significantly at 4h, reached a peak level at 24h and came down toward 48h after WBI with 2.0Gy X-rays. The results also showed that after 2.0Gy exposure, the expression of proteins in mouse thymocytes increased significantlty from 1h to 8h for p53, for p21 from 4h to 48h, and for MDM2 at 4h and 8h, measured by FCM. But no change was found for GADD45 protein expression. Conclusion　These results suggest that G1 arrest could be induced by a single dose of 0.5 Gy, 1.0Gy or 2.0Gy, and its molecular control might be established through the p53-p21 pathway.

Adult ; Aneurysm, Dissecting ; complications ; Coronary Aneurysm ; complications ; Female ; Humans ; Myocardial Bridging ; complications ; Myocardial Infarction ; etiology

BACKGROUND: Endothelial progenitor calls are the cells that can form new blood vessels in the way of angiogenesis in the body,which updates the conventional theory of angiogenesis, vascular damage and repair after birth and provides new ideas for research and treatment of ischemic diseases.OBJECTIVE: To investigate the effects of dog umbilical cord blood endothelial progenitor call (UCB-EPC) transplantation on angiogenesis after myocardial infarction.DESIGN, TIME AND SETTING: An in vivo cytological experiment was performed at the Laboratory Center of Xinhua Hospital between May 2006 and March 2007.MATERIALS: One full-term pregnant hybrid dog was included for preparation of UCB-EPCs. Thirty-six adult dogs were randomly divided into a cell transplantation group (n = 18) and a model control group (n = 18).METHODS: Acute myocardial infarction model was established in each group by ligation of antedor descending coronary artery.In the cell transplantation group, 2 mL physiological saline containing 5×10<'6> BrdU-labeled EPCs was injected into the coronary artery, while in the model control group, simple physiological saline of the same amount was given. At 1,4, and 8 weeks after transplantation, dogs were sacrificed for harvesting myocardial tissue.MAIN OUTCOME MEASURES: Myocardial infarction was confirmed by hematoxylin-eosin staining. Myocardial angiogenesis was observed by BrdU immunohistochemical staining. The number of infarcted myocardial vessels was calculated by yon Willebrand (vW) factor staining.RESULTS: There was plenty of scar tissue, flbroblasts, and small vessels in the myocardial infarction region. In the cell transplantation group, brown yellow particles (BrdU-positive expression) appeared in some nuclei in small vessels from infarcted myocardium. Newly formed vessels were not found in the model control group. In the cell transplantation group, brown yellow particles (vW factor-positive expression) appeared in the cytoplasm of the vascular endothelial cells in the myocardial ischemia and infarction regions, vW factors were not expressed in the model control group. At 1, 4, and 8 weeks after myocardial infarction,there was no significant difference in vessel counts no matter in myocardial ischemia region or in myocardial infarction region between the call transplantation and model control groups.CONCLUSION: EPCs derived from UCB of pregnant dog can participate in the formation of blood vessels but can not promote angiogenesis after acute myocardial infarction.