Objective To investigate the effects of Helicohacter pylori infection on plasma lipid levels. Methods HpIgG was measured by ELISA in both 242 patients with coronary heart disease (CHD) and 88 subjects without CHD, and compared between these two groups. Then 242 patients with CHD were divided into HpIgG positive group and HpIgG negative group ,and total cholesterol (TC) ,triglyceride (TG) ,high density lipaprotein (HDL), low density lipoprotein (LDL), apolipoprotein A (ApoA) , apolipoprotein B (ApoB) were analyzed and compared between these two subgroups. Results The rate of seropositivity for HpIgG in CHD patients was significantly higher than that of controls (53.3 % vs. 38.6 %, P < 0.05), and HDL, ApoA level in HplgG seropasitive group was signif-icantly lower than that of HpIgG seronegative one (P < 0.05). However, there was no difference of TC, TC, LDL and ApoB between these two subgroups (P > 0.05). Conclusion Hp infection may be associated with CHD. It may pro-mote the pathogenesis of CHD through lowering serum HDL-C level.

Objective To investigate whether angiotensin Ⅱ type 1 receptor(AT1R)gene polymorphism is associated with essential hypertension(EH). Methods A total of 200 hypertension patients and 192 normotensive controls were enrolled. The AT1R gene 1166A/C and -810A/T polymorphism were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-PFLP), and the association between the SNPs and the EH were analyzed statistically. Some biochemical index such as serum glucose (GLU) and total cholesterol (TC),triglyceride (TG), high density lipoprotein (HDL-C) and low density lipoprotein (LDL-C) were also measured. Results There was no significant difference between two groups of 1166A/C polymorphisms of AT1R gene(P ＞ 0.05 ). However, for the -810A/T polymorphism of AT1R gene, -810 AT and TT genotypes frequencies were significantly higher in EH patients than control (P = 0. 004). The -810T allele frequencies were higher in case than in control (22.5% vs. 11.5% ;P =0.000). We also found an association between EH and -810AT and TT genotypes by logistic regression analysis ( P = 0. 003 ), adjusted for other risk factors. The odds ratio was 2.57 (95% CI:1. 37 ～4. 84). Conclusions AT1R -810A/T polymorphism is associated with EH and -810T allele may be a risk factor of hypertension

Objective A rabbit model of common carotid artery grafted by external jugular veins was used. Vein grafts were transferred by c-myc antisense oligodeoxynucleotides(ODN) and carried by soluble stent. Try to find a new approach to prevent veins graft failure on molecular basis. Methods New Zealand rabbit were randomly divided into five groups, 10 animals each. Pretreating the soluble stents with synthesized c-myc ODN, following stents: (1) control group; (2) soluble stent; (3) soluble stent with sense-ODN; (4) soluble stent with antisense-ODN; (5) soluble stent with mismatch-ODN were put into the vein graft during end to end anastomosis. After 7, 28 and 90 days of operation, vein grafts were harvested. HE and ET stain were made aim to calculate the extent of intima hyperplasia. The expression of c-myc and PCNA were identified by immunchemistry methods. Situ hybridization and Northern Bloting were made to assess the expression of c-myc mRNA quantitatively and semi-quantitatively in veins. Results In the vein grafts of 7,28,90 days post-operation of soluble stent antisense-ODN group ①Intima hyperplasia were inhibited significantly compare with other four groups. ②The expression of c-myc and PCNA were inhibited significantly compare with other four groups. ③C-myc mRNA expression level was significantly Lower than the other four groups. Conclusion Soluble stent can transfer c-myc ODN effectively. C-myc antisense-ODN transferred by soluble stent can inhibit the expression of c-myc and PCNA, can inhibit intima hyperplasia of vein graft significantly, thus preventing the stenosis of vein graft.

Objective To label the amino-glucomannan(AGM) with fluram and to explore the properties of the compound of fluram-AGM in transmembrane transport.Methods After AGM was labeled with fluram,the peripheral blood mononuclear cells(PBMC) and HepG2 were respectively cultured with Fluram-AGM,then observed under fluorescence microscope with violet light as exciting light.Results Both PBMC and HepG2 showed intracellular indigotic fluorescence.Conclusion AGM can be transported into cells across cell membrane.

Objective To study the condensation mechanism of aminoglucomannan(AGM)with plasmid DNA and some influencing factors in this process.Methods The polysaccharide-DNA complex was analyzed with agarose gel electrophoresis by observing the changes of DNA bands under various influencing conditions including different pH,ionic strength(NaCl concentration),temperature and plasmid DNA sorts.Results The new bands appeared in the slow migration positions after reaction between AGM and plasmid DNA,and the changes of DNA bands content were dependent on AGM concentrations.The condensation degree could be effected by pH,temperature,and ionic strength.Conclusion Our study suggests that the AGM can be condensed with plasmid DNA in proper conditions.

Aim To study the regulatory effects of PMA,a PKC activator,on Kir 2.3 channel function expressed in Xenopus oocytes and COS-7 cells,and PIP2 involvement in these regulations.Methods Kir 2.3 channel was expressed in Xenopus oocytes and COS-7 cell by RNA microinjection and DNA transfection using calcium phosphate precipitate,respectively.Two-electrode-voltage-clamp and whole-cell patch clamp were used to record the Kir 2.3 current in Xenopus oocytes and COS-7 cell.The PIP2 hydrolysis was detected by confocal microscopy.Results PMA significantly inhibited Kir 2.3 current in Xenopus oocytes.But PMA had no effect on the Kir 2.3 current expressed in COS-7 cell,in which activation of M1 receptor,however,induced a significant inhibition of Kir 2.3 current.It was reported recently that PMA could trigger the PIP2 hydrolysis in membrane of oocytes.Thus PKC inhibition of Kir 2.3 current seen in oocytes could be the result of PIP2 hydrolysis.Following the same line,the inability of PKC inhibition of Kir 2.3 current seen in COS-7 cells would suggest PKC could not induce PIP2 hydrolysis in these cells. This hypothesis was tested by monitoring the PIP2 level in COS-7 cell membrane by confocal microscopy.Dynamic changes in membrane PIP2 level were imaged using GFP fluorescence signal that had been tagged to the PLC?1PH domain known to be able to bind PIP2 specifically. There was no significant change of PIP2 level on COS-7 cell membrane after longtime treatment of PMA,whereas again,the activation of M1 receptor by ACh induced a significant change in the PIP2 level.These results were in perfect agreement with the electrophysiological results.Conclusions PMA,through activation of PKC,inhibited Kir 2.3 current expressed in Xenopus oocytes but not in COS-7 cells.Similarly PMA induced significant reduction in membrane PIP2 level in Xenopus oocytes but not in COS-7 cells. PIP2 hydrolysis plays an important role in PKC-induced inhibition of the Kir channel currents.

Objective To investigate the diagnosis and treatment of hepatic artery pseudoaneurysm (HAPA) after liver transplantation.Methods The clinical data of 4 patients who had HAPA after liver transplantation at the No.309 Hospital of PLA from April 2002 to April 2010 were retrospectively analyzed.All the 4 patients had abdominal massive hemorrhage,and 2 of them were complicated by bile leakage and bile duct bleeding.Peritoneal effusion was observed in the 4 patients,and 3 of them were complicated by peritoneal infection.All the patients were diagnosed and treated by angiography and exploratory laparotomy.Results The mean time of hemorrhage of ruptured HAPA was 24.6 days (range,14-35 days).One of the patients was diagnosed by exploratory laparotomy,and the other 3 patients were diagnosed by angiography.Hemostasis of HAPA was successed in 1 patient by hepatic artery ligation,2 patients by interventional embolization + endovascular covered coronary stent grafts implantation guided by digital subtraction angiography (DSA),1 patient by interventional embolization.1 patients died of hepatic failure and 1 died of multiple organ disfunction syndrome.Conclusions Early diagnosis of HAPA after liver transplantation is difficult and the mortality is high.Interventional embolization + endovascular covered coronary stent grafts implantation guided by DSA is the first choice for the diagnosis and treatment of HAPA.

ObjectiveLoss-of-function mutation of p53,a tumor suppressor gene,is an important mechanism for the development of human cancers.In this study we tried to transfect p53N15-based fusion peptide into H1299,a lung cancer cell line,and evaluate the anti-tumor effects of the fusion peptide.MethodsAdeno-associated virus ( AAV) vectors were used for transfecting p53N15 fusion peptide into p53-null lung adenocarcinoma H1299 cells.The anti-replication effects of p53N15 fusion peptide were evaluated with inverted microscopy,MTT test for cell viability and flow cytometry.ResultsFusion peptides in H1299 cells was highly expressed and had detectable suppressive effects on cell proliferation.A large amount of dead cells were seen under microscope after the transfection of recombinant viruses for 72 hours.Cells activity was reduced significantly in the virus-transfecting groups as demonstrated by MTT test.The flow cytometry showed that a large number of dead cells were present in the virus-transfecting groups.ConclusionThe growth of H1299 lung adenocarcinoma cells could be inhibited in vitro by being transfected with p53N15 fusion peptide,which may be a potential gene therapy alone or as an adjuvant option in the treatment of lung cancer.

Objective To investigate the clinical value of emergent perspective stent implantation for leftside obstructive colonic cancer.Methods The clinical data of 26 patients with obstructive colonic cancer who received emergent perspective stent implantation at the Affiliated Xuzhou Hospital of Southeast University from October 2011 to February 2014 were retrospectively analyzed.A soft and a hard guidewire and a catheter were applied in the operation.The guidewires were put through the hole of the intestinal tumor,and then the metal stent and the conveyor were guided by the guidewires and were pulled through the hole of the intestinal tumor,finally the stent was released and the conveyor was adjusted to ensure that the stent was at the right position.Patients were followed-up through outpatient examination till 4 weeks after tumor resection.Results Of the 26 patients,9 were with rectal cancer,10 with sigmoid colonic cancer,6 with descending colonic cancer,1 with splenic flexure cancer.The median length of stenosis was 4.6 cm (range,2.0-8.0 cm).The surgery of the 26 patients was successful.The mean operation time was 35.2 minutes (range,15.2-72.0 minutes),and the mean time of stent implantation was 5.6 minutes (range,2.6-26.9 minutes).Patients had watery or loose stool for 4-8 times after stent implantation.Ten hours after the operation,all the patients were given liquid diet.The remission rate of clinical symptoms was 100.0％ (26/26).No colonic perforation was detected during the operation.Two patients were complicated with slight bleeding,and was alleviated by medication.Twenty-six patients received stage Ⅰ tumor resection procedure within 7-10 days after the symptoms of intestinal obstruction were remised.The success rate of surgery was 100.0％ (26/26).No infection and other drainage were detected after tumor resection through follow-up.Conclusion Emergent perspective stent implantation for left-side obstructive colonic cancer is safe and effective.

Objective A major component of flow cytometry data analysis involves gating , which is the process of identifying homogeneous groups of cells .As manual gating is error-prone, non-reproducible, nonstandardized, and time-consuming , we propose a time-efficient and accurate approach to automated analysis of flow cytometry data .Methods Unlike manual analysis that successively gates the data projected onto a two-dimensional filed, this approach, using the K-means clustering results , directly analyzed multidimensional flow cytometry data via a similar subpopulations-merged algorithm.In order to apply the K-means to analysis of flow cytometric data , kernel density estimation for selecting the initial number of clustering and k-d tree for optimizing efficiency were proposed .After K-means clustering , results closest to the true populations could be achieved via a two-segment line regression algorithm .Results The misclassification rate (MR) was 0.0736 and time was 2 s in Experiment One, but was 0.0805 and 1 s respectively in Experiment Two. Conclusion The approach we proposed is capable of a rapid and direct analysis of the multidimensional flow cytometry data with a lower misclassification rate compared to both nonprobabilistic and probabilistic clustering methods .