Objective To study the clinical significance of the expression of matrix metalloproteinase-9(MMP-9) and E-cadherin(E-cad) in patients with non-small cell lung cancer (NSCLC).Methods Immunohistochemical method (SP) was used to detect the expression of the MMP-9 and E-cad in 62 NSCLC tissues and 18 normal lung tissues.Results The positive expression rate of MMP-9 and the abnormal expression rate of E-cad in NSCLC were closely related to the TNM stages,pathological grades and lymph node involvement (P

Objective To investigate the functions of blood plasma homocysteine (Hcy) and high sensitivity C-response protein (hs-CRP) in the chronic obstructive pulmonary disease (COPD) in pathogenesis plays,and observe whether there was associations with disease severity and the correlations.Methods Forty-one patients with COPD were collected from August 2010 to February 2011,and 35 healthy persons as control group.Blood plasma Hcy,hs-CRP,forced expiratory volume in one second account predicted (FEV1％ predicted),and arterial pressure of oxygen (PaO2,arterial blood gases analysis) were measured in COPD patients and controls.Results Plasma Hcy concentration was (22.07 ± 12.13) μmol/L in COPD patients,but (9.89 ±4.41) μmol/L in controls,there were significant differences between two subjects (t =1.674,P ＜0.01).COPD patients had a higher serum hs-CRP concentration (8.60±3.85) mg/L than control's (4.24 ±0.57) mg/L (t =1.682,P ＜ 0.01).Along the descent of FEV1％ predicted,plasma Hcy and hs-CRP were elevated gradually,both sides show a negative correlation (r =-0.45,-0.49,P ＜ 0.05).And plasma Hcy and hs-CRP present a positive correlation in COPD patients (r =0.68,P ＜ 0.01).Conclusion Plasma Hcy was significantly elevated in COPD patients,positive correlation related to COPD severity and positive correlation related to serum hs-CRP.

Gene disruption by homologous recombination is a powerfu l tool for investigating gene function in yeast. Since 1980’s, it has been deve loped a lot. PCR-mediated gene disruption technique makes the manipulation easi er and it can be used to precisely delete genes in yeast. Multi-gene disruption technique can delete several genes successively in the same yeast strain. After the completion of the yeast Saccharomyces cerevisiae genome sequencing, the gene disruption technique for systematic analysis meets the need of the functio nal genomics in yeast. It also enlighten the study on human functional genomics.

Tissue plasminogen activator(tPA) had been used clinically as a choice drug for the therapy of ischemic shock.Evidence in animal experiments suggests that tPA may play a neurotoxic role in central nervous system(CNS) via the induction of microglial activation,degradation of laminin matrix and enhancement of the N-methyl-D-aspartate(NMDA) receptor-mediated signaling in neurons,other reports imply tPA could protect rat neuronal cells from zinc-induced toxicity.

cases of coronary heart disease with the left main coronary artery (LM) Lesion (≥50% stenosis) were analyzed In 8 cases the LM Lesion was only involved,and in the others (43),the LM Lesions were accompanied by other branch lesions of coronary artery Compared with 210 cases of coronary heart disease without LM Lesions,in the LM Lesion groups,the patients clinically manifested severe unstable angina,and the incidences of acute myocardial infarction and sudden death were higher In the two groups of patients with and without LM Lesion The risk factor for coronary heart disease and left ventricular ejection fraction was unsignificantly different The clinical manifestations were similar in the two groups of patient with only LM Lesion and without LM Lesion But when angina onset myocardial ischemia is severe in the patients with only LM Lesion The coronary artery bypass graft may improve symptom and prognosis of patients with LM Lesion

Objective To determine the efficacy of stent based rapamycin (Rapa) and methotrexate (MTX) alone or in combination of them to reduce in stent neointimal hyperplasia Rapamycin is a potent immunosuppressive agent that inhibits smooth muscle cell (SMC) proliferation by blocking cell cycle progression Methods Stents were coated with PLGA (poly/lactic co glycolic acid) polymer containing 68-96 ?g Rapa or 250-300 ?g MTX or 58-81 ?g Rapa and 120-170 ?g MTX respectively Twenty five stents (metal, n =8; MTX, n =5; Rapa, n =7; Rapa and MTX, n =5) were implanted in the coronary arteries of 25 pigs Results After 28 days, the mean neointimal thickness was (2 18?1 03) mm 2 in the bare metal stent group; (0 94?0 88) mm 2 in the Rapa group; (0 47?0 24) mm 2 in the combination Rapa and MTX group, (3 93?1 48) mm 2 in the MTX group Compared with metal group the mean neointimal thickness was significantly decresed in Rapa groups and combined group The in stent restenosis was 25% (2/8) in metal group and 80% (4/5) in MTX group after 28 days, and there was no restenosis in the other two groups Conclusion Stent based delivery of Rapa via PLGA polymer can feasibly and effectively reduce in stent neointimal hyperplasia by inhibiting cellular proliferation However there are no effects to reduce in stent neointimal hyperplasia by MTX eluting stents in this study

Present studies have proved that tumor in-situ is infiltrated with plenty of macrophages (M?), M? may contribute up to or more than half of a tumor’s mass. It’s frustrated that as the main component of immune system, M? promote the tumor growth, and create a suitable microcircumstance to promote the progression of tumor as well. The furtherknowledge of the mechanism mentioned focusing on finding the new way to anti-tumor clinical research were reviewed.

Objective To design a vehicle-mounted X-ray diagnosis simulation training system based on the field X-ray diagnostic vehicle to solve the problems during its training and utilization.Methods The field X-ray diagnostic vehicle had its internal and external structure analyzed,and was divided into several functional modules.The technologies of computer programming and database were used for the simulation of the modules.An example was given to simulate the operating process of the vehicle by establishing traumatic condition model,war injury image library and etc.esults The system developed realized the simulation training of the vehicle,and the trainee gained feedback after simulation as references.Conclusion The system implements informatized training of the field X-ray diagnostic vehicle,shortens the training period,decreases the training cost and increases the training efficacy.

Brominated flame retardants (BFRs) are widely used industrial chemicals. Several BFRs were found to be at detectable level in the wildlife as well as in human, however, up to now there were few related papers which could be found for the adverse effects of BFRs on the wildlife, especially, on human. The recent research works on the biological effects of polybrominated diphenyl ethers (PBDEs), tetrabromobisphenol A (TBBPA) or derivates, hexabromocyclododecane (HBCD) and polybrominated biphenyls (PBBs) are reviewed in the present paper.