Objective To evaluate the effect of adenovirus-mediated siRNA targeting Survivin on tumor growth and metastasis of mouse melanoma.Methods A replication-defective recombinant adenovirus AdH1-siRNA-Survivin targeting mouse Survivin was constructed using the homologous recombination technique.The expression of Survivin protein in B16BL6 cells after infection was detected by Western blotting.Mouse melanoma models were established by subcutaneous injection of B16BL6 cells.AdH1-siRNA-Survivin of 2?109 pfu every week by multi-spot intratumoral or peritumoral injection was performed to every mouse(totally three times).The tumor volume was measured every five days after tumor cell implantation,and the microvessel density(MVD) of tumor was counted by immunohistochemistry under the microscope.For the experimental metastasis assay,B16BL6 cells infected with AdH1-siRNA-Survivin were injected into the tail veins of mice,then the visible black nodules on the lung surface were counted macroscopically at 21th day after tumor cell injection.Results AdH1-siRNA-Survivin could obviously decrease the expression of Survivin protein in B16BL6 cells.When compared with the blank control and AdH1-empty control,the tumor growth was inhibited and MVD was less in the mice injected with AdH1-siRNA-Survivin(P

Objective To prospectively evaluate the mid-term results of mitral annuloplasty using autologous pericardium for mitral valve insufficiency.Methods From April 2004 to December 2011,48 patients underwent mitral annuloplasty using autologous pericardium,the average length of pericardial strips was (51.9 ±2.8)cm.Carpentier classification was class Ⅰ in 5 cases,class Ⅱ in 41 cases,and class Ⅲ in 2 cases.The mitral valve repair techniques included quadrangular resection in 30 cases,valve repair in 7 cases,chordae transposition in 4 cases,edge to edge technique in 2cases,and artificial chordae tendineae in 3 cases.Concomitant procedures included one case arotic valve replacement,11 cases tricuspid valve repair,9 cases coronary artery bypass grafting,1 case coronary artery muscle bridge resection,and 1 case permanent pacemaker implant.Datum on long-term outcomes were obtained by questionnaires and by phone interview [average follow-up time (62.2 ± 21.3) months].Results Compared with preoperative datum,the diameters of left ventricular end diastolic diameter (LVDD) and left atrial diameter (LAD) examined by echocardiography show significant reduction in postoperative [(58.6 ± 1.7) mm vs (45.1 ± 1.3) ram,t =12.85,P ＜0.01 ; (50.6 ± 1.6)mm vs (38.0 ± 1.4)ram,t =9.58,P ＜0.01].There was early postoperative death in one case,cerebral infarction in one case,but none of patients died in late postoperative period.One patient had moderate mitral valve regurgitation in long-term follow-up.None of patients had redo operation and hemolytic complications.Conclusions Mitral annuloplasty using an autologous pericardium was an acceptable technique with low anticoagulation complications,permanent,well left ventricular function maintenance,and an economic method.

Objective To observe the sedation and analgesia in surface anesthesia in conscious glossopha-ryngeal LMA for the clinical effect of laparoscopic hysterectomy.Methods 90 patients undergoing elective laparo-scopic total hysterectomy were randomly divided into three groups,30 cases in each group.The observation group (group A):sedation,analgesia,full surface anesthesia,control group 1 (B group)control group 2 (group C)were treated with endotracheal intubation under general anesthesia.At intubation and pull tube stage,the patients'reaction, hemodynamic changes,pneumoperitoneum 1 h blood gas and perioperative complications were observed.Results The mean arterial pressure(MAP)and heart rate(HR)of A group were (92.7 ±10.6)mmHg and (82.8 ±12.1)/min. Those of B group were (98.4 ±11.6)mmHg,(89.1 ±11.4)/min,C group were (111.2 ±12.5)mmHg,(104.1 ± 13.2)/min,those in A group and B group were better than C group(A group and C group,t =6.18,6.52,P <0.01;B group and C group,t =4.11,4.71,all P <0.01).The pulse oxygen saturation(SpO2 )and peak airway pressure (Paw)of A group were (99.6 ±0.4)and (17.3 ±2.1)mmHg,those in group B were (99.5 ±0.5)% and (17.6 ± 2.0)mmHg,group C were (99.5 ±0.5)% and (22.5 ±2.8)mmHg.The differences between A group and B group were statistically significant(compared with C group,t =14.3,8.14,all P <0.01;B group and C group,t =12.7, 7.78,all P <0.01).The incidence rates of perioperative complications and adverse reactions of A,B,C groups were 27%,33%,67%,that in C group was significantly higher than A group and B group(χ2 =9.64,6.67,all P <0.01). Conclusion The laryngeal mask airway was used for laparoscopic total hysterectomy under the condition of sedation and analgesia,and it can shorten the time of the whole body,prevent the difficulty of intubation,emergency airway and anesthesia related complications.

Thunder-fire wonder moxibustion is one of pressing moxibustion therapies and has a very good therapeutic effect on limb pains, furuncle-carbuncle and cold syndrome. To reveal the mechanism of clinical action of ancestors’ thunder-fire wonder moxibustion and seek the physical basis of its therapeutic advantage, this study, by a series of experiments, compared heat transfer regularities of thunder-fire wonder moxibustion versus pure moxa stick in simulated biological tissues under different conditions, preliminarily revealed heat radiation and heat transfer regularities of thunder-fire wonder moxibustion, tried to find pressing strength suitable for clinical operation of pressing moxibustion and had thoughts about changes in the clinical operation of past dynasties.

Objective To investigate the impact factors of real-time shear wave elastography ( SWE) by using the ultrasound phantoms . Methods The noduled phantoms with different densities and viscosities and background phantoms with three textures ( soft ,medium ,and hard) were prepared by using gelatin as the main ingredient . Nodule phantoms were embedded in background phantom in different depths . The elasticity ( Emax ) was measured by SWE . Factorial designed was used to evaluate the effects of various factors ,including density ,viscosity and depth of nodule phantom and texture of background phantom on Emax of nodule phantom . Binary Logistic regression was used to analysis the effects of various factors , including density ,viscosity ,diameter ,depth of nodule phantom and texture of background phantom on the window phenomenon . Results The density ,viscosity and the Emax of nodule phantoms increased as the gelatin ratio increased . The Emax of nodule phantoms in shallow position ( depth < 3 .0 cm ) were higher than those in deep position ( depth ≥ 3 .0 cm) . In hard-background phantoms ,the Emax of nodule phantoms was maximal ,soft-background phantoms was minimal . Main effects of the density ,viscosity ,depth of nodule phantoms and texture of background phantoms on Emax of nodule phantoms were different ,and all of the factors had interactive effects ( P < 0 .05 ) . The density ,viscosity ,diameter and depth of nodule phantoms were independent risk factors of the windowphenomenon ( P < 0 .05 ) . According to OR ( 23 .846 ,0 .093 ,and 0 .003 ,respectively) ,reduced density and viscosity ,or increased diameter and depth of nodule phantoms ,could increase the incidence of the window phenomenon . Conclusions The density and viscosity of self-making ultrasound phantoms can be easily and flexibly controlled .Density ,viscosity , diameter ,depth of nodule and texture of background are the impact factors of shear wave elastography .

Objective To explore the value of high frequency ultrasound in differential diagnosis in dorsal thyroid (including gland dorsal or posterior) nodules.Methods Ultrasonographic features of 101 patients with ultrasonography suspected or misdiagnosed nodules in the dorsal area of the thyroid gland,which were then confirmed by pathology or hyaluronography/gastroscopy,were retrospectively analyzed.Ultrasonographic homogeneity (other nodules with similar ultrasonographic features were found in the ipsilateral gland),parenchyma homology (nodule parenchyma was continuous with glandular parenchyma) and blood homology (blood flow signals in nodules were continuous with those in glandular parenchyma) were applied as indicators for determinng thyroid nodules.Double-line sign or vascular arch sign at the edge of nodules served as an indicator for determining parathyroid nodules.Results Of the 101 cases,there were 46 thyroid nodules,35 parathyroid nodules,7 enlarged lymph nodes;6 esophageal diverticulum,6 esophageal cancer,1 cleft cyst.The determination of thyroid nodules by at least one of ultrasonographic homogeneity,parenchyma homology and blood homology showed sensitivity of 73.5 ％,specificity of 96.5 ％ and accuracy of 85.8％.In the determination of parathyroid nodules by double-line sign or vascular arch sign at the edge of nodules,sensitivity,specificity and accuracy was 54.1％,85.5 ％ and 74.5 ％,respectively.Conclusions Nodules in the dorsal area of the thyroid gland have different sources,and the understanding of corresponding characteristic ultrasonographic appearances is helpful for improving the differential diagnosis of these nodules.

We constructed a recombinant adenoviral vector expressing human tissue inhibitors of metalloproteinase-1(TIMP-1), and evaluated the inhibition of TIMP-1 secreted by primary fibroblasts after infection with adenovirus-mediated TIMP-1 gene (Ad-TIMP-1) on tumor cell invasion and metastasis in mouse melanoma. It was found that TIMP-1 was detected in the supernatants of cultured mouse primary fibroblasts after infection with Ad-TIMP-1 by indirect enzyme-linked immunosorbent assay (ELISA). The TIMP-1 secreted by Ad-TIMP-1 infected primary fibroblast significantly inhibited B16BL6 cell invasion and metastasis both in vitro and in vivo. We also demonstrated that the primary fibroblasts transfected by Ad-TIMP-1, after being subcutaneously injected into mouse, can secreted TIMP-1 into the blood of mouse and maintained at the therapeutic in vivo levels of TIMP-1. These results suggest that the preparation of Ad-TIMP-1 infected primary fibroblast be an effective method to deliver TIMP-1 gene in vivo, which provides a new strategy of gene therapy and has the potential for clinical applications in the treatment of tumor cell metastasis.
Adenoviridae ; genetics ; metabolism ; Animals ; Female ; Fibroblasts ; metabolism ; Genetic Therapy ; Humans ; Melanoma, Experimental ; pathology ; therapy ; Mice ; Mice, Inbred C57BL ; Neoplasm Invasiveness ; Neoplasm Metastasis ; Recombinant Proteins ; biosynthesis ; genetics ; pharmacology ; Tissue Inhibitor of Metalloproteinase-1 ; biosynthesis ; genetics ; pharmacology

Objective To evaluate the clinical efficacy and safety of antofloxacin hydrochloride tablet for the treatment of acute bacterial infections. Methods A multi-center randomized control, double blind and double dummy clinical trial was conducted; levofloxacin tablet was chosed as controlled drug. The duration of treatment was 7-14 days in both groups. Results A total of 719 patients were enrolled in the study, in which 359 patients treated with antofloxacin and 360 patients treated with levofloxacin were included. Three hundred and thirty and 337 patients completed the study and met with all the criteria for perprotocol analysis, respectively. By the end of chemotherapy, the cured rates in per protocol set (PPS)population were 79.7% and 77.4%, the effective rates were 95.2% and 96. 7%, and the bacterial clearance were 96. 7% and 97. 5% for the treating and control group, respectively. The clinical and bacterial efficacy of antofloxacin and levofloxacin was comparable by the analysis of infectious sites. Three hundred and fifty-seven and 356 patients in antofloxacin and levofloxacin groups were evaluated the safety.The drug adverse events occurred both in 10. 1%, and drug adverse reactions accurred in 7. 8% and 7.9%patients in the two groups. The most common drug adverse reactions were mild gastroenteric symptoms. No QTc prologation was detected in all the patients. One patient in each group had mild blood glucose increase at the end of therapy, but the glucose returned to normal level without any intervention. No statistic significant difference between the two groups in clinical efficacy and safety was detected (P＞0.05).Conclusions Antofloxacin hydrochloride tablet was effective and safe for the treatment of acute bacterial infections.

Child ; Chordae Tendineae ; injuries ; Female ; Heart Valve Diseases ; diagnosis ; surgery ; Humans ; Mitral Valve ; injuries