Purpose:To study the expressions and its clinical significances of bcl-2 and integrin?3 in human Non-small cell lung cancer(NSCLC)after radical surgical resection. Methods:Immunohistochemical (IHC) staining of bcl-2 and integrin?3 was performed on paraffin-embedded sections from 269 NSCLC patients who underwent surgery and were followed up for 1.1 to 122.2(median, 48.4) months postoperatively. Differences in survival rates and clinical characteristics were evaluated by SPSS10.0 statistical software packet. Results:The prevalence of bcl-2, integrin?3 and both these proteins expression in NSCLCs was 56.9%, 47.2% and 34.9%, respectively. Bcl-2 expression was seen more frequently in female NSCLCs and smaller tumors. Integrin?3 was seen more frequently in squamous carcinomas. Cox multivariate analysis showed that bcl-2 expression in stage Ⅱ NSCLC was an independent risk factor (5 years survival rate: 39.3% vs 52.1% P=0.04), and both bcl-2 and integrin ?3 positive in stage Ⅲa NSCLC are independent good factors(5 years survival rate: 34.5% vs 23.8% P=0.04). Conclusions:Bcl-2 and integrin ?3 are indicators of NSCLC biological behavior. Combined analysis of expression of these proteins in tumors may indicate the prognosis of NSCLC.

Objective To investigate the levels of transformation growth factor-β1 (TGF-β1),vascular endothelial growth factor (VEGF) and insulin growth factor-Ⅰ (IGF-Ⅰ) role in the pathogenesis of serum of patients with combined pulmonary fibrosis and emphysema (CPFE).Methods Recruited 20 patients with CPFE,40 cases with idiopathic pulmonary interstitial fibrosis (IPF) and 40 cases with emphysema who were admitted to our hospital during July 2011 to February 2012.Serum levels of TGF-β1,VEGF and IGF-Ⅰ were detected by ABC-ELISA.Results Serum levels of TGF-β1 and IGF-Ⅰ were significantly higher in patients with CPFE and IPF than these in patients with emphysema (TGF-β1:(160.73 ± 40.62) ng/L vs.(167.35 ± 42.82) ng/L vs.(128.75 ±35.77) ng/L; IGF-Ⅰ:(179.65 ±60.73) ng/L vs.(192.32 ±58.75) ng/L vs.(148.73 ±49.67) ng/L,P ＜ 0.05 or P ＜ 0.01).The IPF group had significantly higher serum level of VEGF than the emphysema group ((506.12 ±82.37) ng/L vs.(437.31 ±62.58) ng/L,P ＜0.01).Serum levels of TGF-β1 and IGF-Ⅰ in CPFE and emphysema groups were positively correlated (r =0.885,0.918 respectively,P ＜ 0.01).Smokers in the CPFE group had significandy lower level of serum VEGF than those who did no smoke ((406.19 ± 66.94) ng/L vs.(482.88 ± 79.91) ng/L,t =-2.287,P =0.035).Conclusion Serum level of VEGF increased significantly in the IPF group,suggesting the participation of VEGF in pulmonary interstitial fibrosis.IGF-Ⅰ involved in the pathogenesis of pulmonary interstitial fibrosis.TGF-β1 and IGF-Ⅰ have a positive linear regressive relationship,which indicates that they may work synergistically in the process of the fibrosis.

0.05).CONCLUSION:Gatifloxacin exhibited no effect on the pharmacokinetics of doxofylline in healthy human body when the two drugs used concomitantly.

BACKGROUNDTo study the expressions and its clinical significances of fas and P53 protein in human non-small cell lung cancer (NSCLC) after complete surgical resection.

METHODSImmunohistochemical stain of fas and P53 was performed on paraffin-embedded sections from 269 NSCLC patients who underwent surgery and were followed up for 1.1 to 122.2 (median, 48.4) months postoperatively. Differences in survival rates and clinical characteristics were evaluated by SPSS10.0 statistical software packet.

RESULTSThe rate of fas and P53 expression in NSCLC cancer tissue was 43.1% and 49.4% respectively. Fas expressions were seen more frequently in female patients (59.3% vs 39.1%, P < 0.01). Univariate analysis showed that fas expression was a good factor for predicting prognosis. The 5-year survival rate of the patients whose tumors had positive fas expression was significantly better than those individuals whose tumors had negative fas expression (51.4% vs 42.4%, P=0.02), especially in patients in stage I and IIIA . The expression of P53 had no significant influence on the prognosis of these 269 NSCLC patients. Combined analysis of fas and P53 expression in NSCLC cancer tissues showed significant prognostic influence (P=0.01). The 5-year survival were 40.1% (fas+ and P53-), 45.4% (both positive or both negative) and 57.2% (fas- and P53+), respectively. COX multivariate analysis showed that reduced fas expression in 269 NSCLC is an independent risk factor, especially in stage IIIA NSCLC.

CONCLUSIONSFas and P53 protein are indicators of NSCLC biological behavior. Reduced fas expression in NSCLC is an independent risk factor for early stage patients. Analysis of apoptosis related proteins expression in tumors might be helpful to predict the prognosis of patients with NSCLC.

Objective To develop a competitive immunoassay for quantitative determination of total immunoglobin E (tIgE) in human serum based on light-initiated chemiluminescent assay (LICA).Methods The LICA-tIgE assay was performed by incubating serum samples or calibrator with anti-human IgE antibody-coated chemiluminescet beads,biotinylated human IgE and streptavidin-coated sensitizer beads.The working conditions of this assay were optimized,analytical performance was detected and the correlation of tIgE results between LICA and Beckman Coulter IMMAGE 800 was evaluated.Results The precision of intra-assay and inter-assay (coefficient of variation) ranged from 5.50％ to 7.73％ and 6.45％ to 9.90％,respectively.The functional sensitivity of this assay was 12.65 IU/mL.The recovery rates measured by adding IgE calibrators to human sera with different IgE concentrations were ranged from 104.15％ to 109.37％.The disturbing rates measured by adding total bilirubin,hemoglobin and triacylglycerol to human sera with different IgE concentrations were ranged from-4.49％ to 8.46％.Also,the tIgE results of 111 patients measured by LICA correlated well with those by Beckman Coulter IMMAGE 800 (r2 =0.959).Conclusion LICA developed in this study for detecting tIgE of human serum showed effective perfomance and could meet the basic requirements of clinical diagnostic reagents.

Purpose: Titanium implants are widely used in the treatment of dentition defects; however, due to problems such as osseointegration failure, peri-implant bone resorption, and periimplant inflammation, their application is subject to certain restrictions. The surface modification of titanium implants can improve the implant success rate and meet the needs of clinical applications. The goal of this study was to evaluate the effect of the use of porous titanium with a chitosan/hydroxyapatite coating on osseointegration. Methods: Titanium implants with a dense core and a porous outer structure were prepared using a computer-aided design model and selective laser sintering technology, with a fabricated chitosan/hydroxyapatite composite coating on their surfaces. in vivo and in vitro experiments were used to assess osteogenesis. Results: The quasi-elastic gradient and compressive strength of porous titanium implants were observed to decrease as the porosity increased. The in vitro experiments demonstrated that, the porous titanium implants had no biological toxicity; additionally, the porous structure was shown to be superior to dense titanium with regard to facilitating the adhesion and proliferation of osteoblast-like MC3T3-E1 cells. The in vivo experimental results also showed that the porous structure was beneficial, as bone tissue could grow into the pores, thereby exhibiting good osseointegration. Conclusions Porous titanium with a chitosan/hydroxyapatite coating promoted MC3T3-E1 cell proliferation and differentiation, and also improved osseointegration in vitro. This study has meaningful implications for research into ways of improving the surface structures of implants and promoting implant osseointegration.

UNLABELLEDObjective To compare the impact of right ventricular apical (RVA) versus right ventricular outflow tract (RVOT) pacing on left ventricular systolic synchronization.

METHODSSixty patients were prospectively recruited and randomized into RVA group (n=30) with the right ventricle leads placed in the RVA and RVOT group (n=30) with right ventricle leads placed in the septum of the RVOT. Speckle tracking imaging was performed with 100% ventricle pacing to measure the differences in the time to maximum left ventricle (LV) radial strain.

RESULTSIn RVA group, the difference in the time to 6-segment maximum LV radial strain after pacing was 105.27 ± 19.74 ms, significantly greater than that in RVOT group (41.65 ± 12.17 ms, P<0.001). The standard difference of time to 6-segment maximum LV radial strain was also significantly greater in RVA group than in RVOT group (42.71 ± 17.63 vs 17.63 ± 5.62 ms, P<0.001).

CONCLUSIONLeft ventricle systolic synchronizaition after RVOT pacing is superior to RVA pacing.

Objective To analyze the risk factors for lung injury and pulmonary arterial hypertension in patients with chronic obstructive pulmonary disease(COPD),and the predictive value of serum SDF-1 and sRAGE for lung injury and pulmonary arterial hypertension.Methods A total of 200 patients with COPD admitted to our hospital from January 2021 to January 2023 were selected as research objects,23 of whom occurred lung injury and the rest 177 had no lung injury,and 31 developed pulmonary hypertension and the remaining 169 had no pulmonary hypertension.The predictive value of serum SDF-1 and sRAGE for pulmonary injury and pulmonary hypertension was analyzed.Results Multi-factor logistic regression analysis showed that D-D,PCT,CRP,RDW,MPV,PLT,NLR,SDF-1,sRAGE,pulmonary hypertension,arterial blood oxygen partial pressure,FVC and FEV1 were the main factors affecting lung injury in patients with COPD.D-D,PCT,CRP,RDW,MPV,PLT,NLR,SDF-1,sRAGE,arterial partial oxygen pressure,FVC,FEV1 and CT angiographic pulmonary artery volume were the main factors affecting the occurrence of pulmonary hypertension in those patients(P<0.05).Serum SDF-1 and sRAGE were positively correlated with lung injury and pulmonary hypertension in patients with COPD(P<0.05).The sensitivity and accuracy of SDF-1 and sRAGE for predicting lung injury and pulmonary hyperten-sion in patients with COPD were higher than those of SDF-1 and SRage alone(P<0.05).Conclusions Pulmonary injury in patients with COPD is associated with D-D,PCT,CRP,RDW,MPV,PLT,NLR,SDF-1,sRAGE,pulmonary hypertension,arterial blood oxygen partial pressure,FVC,FEV1.The occurrence of pulmonary hyper-tension is related to D-D,PCT,CRP,RDW,MPV,PLT,NLR,SDF-1,sRAGE,arterial partial pressure of oxy-gen,FVC,FEV1 and CT angiography of pulmonary artery volume.Combined detection of SDF-1 and sRAGE has a higher predictive value for lung injury and pulmonary hypertension.

Objective:To explore the incidence and factors of the influence of preoperative related factors on postoperative orthopedic evaluation, through the evaluation of thoracic shape orthopedic evaluation of children pectus excavatum, during plate implantation after Nuss procedure.Methods:From April 2012 to April 2019, the clinical data were analyzed retrospectively for 159 hospitalized cases of Nuss procedure for pectus excavatum in Xi’an Children’s Hospital.The mean age was(6.8±3.4) years old(3.2-17.0 years old); males 124, females 35; Haller index 4.0±1.0(2.7-7.5); 6 cases(4%) were poor orthopedic evaluation with the thoracic shape, males 5, femal 1; 23 cases (14%) were average satisfied with the thoracic shape, males 16, femals 7; 130 cases (82%)were good orthopedic evaluation with the thoracic, males 103, femals 27. Follow-ups were conducted for at least 2 years, Retrospective analysis of the relationship between postoperative thoracic satisfaction and age, gender, Haller index, how the plates were placed during surgery and symmetry of funnel chest, t test and χ2 test were used for statistical analysis. Results:There were statistically significant differences between thoracic orthopedic evaluation after postoperative and classification of pectus excavatum ( P=0.001), and poor orthopedic evaluation after asymmetric pectus excavatum operationand ; There were no significant differences in gender, Haller index, surgical method and how the plates were placed during surgery( P>0.05). However, it can be seen from the mean and percentage that with the decrease of age, and the increase of Haller index, the orthopedic evaluation gradually becomes worse. Conclusion:According to our single-center study, asymmetric pectus excavatum is a factor for poor orthopedic evaluation during plate implantation after Nuss, especially for young children and children with larger Haller index.

Objective: To analyze the stress distribution of different types of bone tissue around porous titanium implant in different mechanical loads and to further evaluate the biomechanical properties of porous titanium implant. Methods: Finite element (FE) models of implant restorations for the maxillary first premolar was established, and the diameter of implants in the models was 4.1 mm. Five models was constructed according to diameter of implant central pillar and the thickness of outer porosity: solid group (group A), central pillar 1.5 and 3.1 mm and outer porosity 30% (group B and C), central pillar 1.5 and 3.1 mm and outer porosity 40% (group D and E). Different loads (150 N vertical force, 50 N lateral force) were applied to the occlusal surface of implant restorations in type Ⅲ bone and maximal von Mises stress was evaluated. Meanwhile, a couple of simplified maxillary part models varied in four types of bone were constructed with the implants bearing load of simulation ultimate force to evaluate the stress distribution of different types of bone. Results: With different mechanical loading, the stress value of bone tissue around porous implant (group B-E) was greater than that in the solid structure (group A). Under the load of simulation ultimate force, the maximum stress of the bone rised with the increase of porosity and thickness of the porous implant. And the maximum stress value of the surrounding bone tissue changed with the change of bone. Under vertical loading, the maximal von Mises stress of the bone around solid implants of group A was 17.56 MPa, which was a little lower than that of group B and C. And the maximal equivalent von Mises stress of group D and E was 69.24 MPa. The results of lateral force and simulation ultimate force loading were similar. The stress of the bone tissue around implant increased with the decrease of bone quality. The maximum stress value of group D implant was 134.95 MPa. Conclusions Porous structure of the implant is conducive to transmit stress to surrounding bone tissue and increases the mechanical stimulation of bone. However, if the value and direction of load are inappropriate or quality of bone is poor, pathological stress may be produced.