Objective: To analyze the relationship between Stat 3 protein expression and clinical staging, tissue types, P53 protein and PCNA in lung carcinoma, and to investigate the role of Stat 3 protein in the pathogenesis of lung carcinoma. Methods: Using immunohistochemical technique, Stat 3 protein, P53 protein and PCNA were detected in different tissue in 42 patients with lung carcinoma without radiotherapy and chemotherapy. Results: The positive rate of Stat 3 was 81.0% in lung carcinoma. The expression intensity of Stat 3 in lung carcinoma was not associated with T,N and clinical stage , but it was associated with the expression intensity of P53 and PCNA and it was related to tissue types.Stat 3 protein were markedly higher in NSCLC than that in SCLC. Conclusion: The expression of Stat 3 protein is abnormal in lung carcinoma. Stat 3 may involve in regulation of p53 gene in lung carcinoma cell and accelerate proliferation of lung carcinoma cell, it may play an important role in generation of lung carcinoma. Inhibition of Stat 3 pathways may become a new therapy for lung carcinoma.

[Objective]To discuss the functional mechanism of Qufeng Xuanbi(remove wind and apoplexy)Formula(Pingxiao Heji) on bronchia asthma.[Method]Make bronchia asthma animal model with guinea pig sensitized by egg albumen,treat it with Qufeng Xuanbi Formula,observe the changes of cell adhesion molecular(ICAM-1)in animal plasma.[Result]When experimental guinea pig was attacked by asthma,the ICAM-1 was obviously more than that in normal control group,the formula could markedly lower ICAM-1(95% of the believable zone 20.387～53.834u/ml)(P

The stability of cell genetic material is influenced by a variety of factors, both internal and external, which can cause various types of DNA damage, such as DNA alkylation, oxidation, mismatching, loop structure, atypical DNA structure, single-strand break, and double-strand break.These DNA damages disrupt cellular homeostasis and dynamic equilibrium, which cause gene mutations, chromosomal abnormalities, and even degradation, aging, and death at different biological levels.By searching and identifying DNA damage sites, the cell activates a series of biochemical pathways, coordinates the progress of DNA replication and transcription, and then repairs the DNA damage.In this way, the cell maintains its independence and stability.While radiotherapy plays a role in eliminating tumors by DNA damages, it also initiates DNA damage responses.Among the responses, base excision repair, nucleotide excision repair, mismatch repair, double-strand break repair, and post-translesion synthesis repair play a key role in repairing the damages.The dysfunction of these repair pathways will cause differences in tumor radiation sensitivity.This paper summarizes recent research results in DNA damage repair, and focuses on the types of DNA damage and their repair mechanisms, so as to promote the understanding of the great significance of this field and to provide a theoretical basis for exploring the application of DNA damage repair pathways in tumor therapy.

Objective To compare the efficacy of lymph nodes(LNs) dissection between video-assisted thoracic surgery (VATS) and thoracotomy in the treatment of clinical stage Ⅰ lung cancer.Methods A comprehensive search of PubMed,Ovid Medline,EMBASE,Web of Science,ScienceDirect,the Cochrane Library,Scopus database and Google Scholar was performed to identify studies comparing VATS and thoracotomy in LNs dissection.The data was analyzed by RevMan 5.3 software and SPSS 18.0.Results After selection,23 articles met the inclusion criteria.2 316 patients were involved in VATS group and 3 346 patients were involved in Open group.Meta analysis showed that less total LNs(95％ CI:-1.64--0.60,P ＜ 0.0001),totalLNsstations(95％CI:-0.61--0.01,P=0.04) andN1 LNs(95％CI:-0.28--0.02,P=0.02)were dissected in VATS group.On the left side,more LNs were dissected in VATS group(95％ CI:0.51-3.22,P =0.007).The same number of mediastinal LNs (95％ CI:-0.74-0.15,P =0.20),mediastinal LNs stations (95％ CI:-0.20-0.14,P =0.76),right side LNs (95 ％ CI:-1.52-2.23,P =0.71) were harvested in both groups.Conclusion In the surgical treatment of clinical stage Ⅰ lung cancer,less total LNs,total LNs stations and N1 LNs were dissected in VATS group,while more left side LNs were harvested by VATS.The same number of mediastinal LNs,mediastinal LNs stations right side LNs were harvested in the two groups.This conclusion still needs to be further proved by more high-quality and large-scale RCTs.

OBJECTIVE To analyze the bacterial distribution and drug resistance in lower respiratory tract nosocomial infection(NI).METHODS To investigate 351 patients suffered from lower respiratory tract NI using the prospective monitoring methods,and doing the pathogenic bacterium cultivation for sputums of 351 patients and then taking the susceptibility test.RESULTS Totally 346 pathogenic bacteria were found in sputums of 351 patients.The major pathogenic bacteria were Pseudomonas aeruginosa,Escherichia coli,Klebsiella and Staphylococcus aureus.ESBLs were 36.0% and 40.0%,respectively in E.coli and Klebsiella,and MRSA were 82.1% in S.aureus.Drug resistances were common in Gram-negative bacilli(GNB) and Gram-positive cocci.Piperacillin/tazobactam and cefoperazone/sulbactam and imipenem were the most sensitive for GNB,S.aureus,S.epidermidis and Enterococcus were all sensitive to vancomycin.CONCLUSIONS Drug resistance of the pathogenic bacteria in lower respiratory tract NI is common,so it′s necessary to emphasize pathogenic bacterium monitoring and use the antibacterials exactly.

Objective To evaluate the serum changes in glioma patients, and in relations with clinicopathalogy parameters response to treatment and survival in patients with glioma via the examination of the significance of serum VEGF, Flt-1 and KDR levels. Methods Serum VEGF,Flt-1 and KDR levels were analyzed in patients of glioma before and after treatment, and patients with brain metastasis, as well as in healthy controls. Serum VEGF, Flt-1 and KDR levels were assessed by Enzyme-Linked Immunosorbent Assay(ELISA) and the data were processed by SPSS 11.5 for t-test and relevant analyses. Results Serum VEGF, Flt-1 and KDR levels were higher in patients with glioma than in healthy control (P =0.001, P =0.043 and P =0.045 respectively). Significant difference on levels of VEGF was found (P =0.032) comparing glioma group with brain metastasis group. The pretherapeutic serum levels of VEGF and Flt-1 were significantly different with disease recurrence or persistence after treatment (P =0.026 and P =0.038). There was significant correlation between the serum levels of VEGF correlated and that of Flt-1 and KDR (r =0.456 P

Objective: To study the role of inducible nitric oxide synthase (iNOS) in activated macrophages and nitric oxide (NO) in the defence against tumors. Methods: Macrophages were obtained by alveolar lavages of mice and activated through incubation with recombinant murine INF? in vitro. P815 cells were added to the culture. Culture supernates were collected to measure the activity of iNOS and NO. Tumoricidal activity of macrophages was determined in presence and absence of the specific inhibitor of NO synthase: L NMMA. Results: NO production and activity of iNOS induced by activated macrophages were positively related with concentration of INF? in macrophage P815 coculture. The addition of L NMMA to the culture suppressed NO production, the inhibitory rate of activated macrophages against P815 cells was reduced distinctly ( P

OBJECTIVE:To study the efficacy of Urokinase vs.Low Molecular Weight Heparin in the treatment of acute pulmonary thromboembolism.METHODS:A total of 35 patients with acute pulmonary thromboembolism who had no past history of heart and lung diseases were enrolled and randomly assigned to two groups following ultrasonography and pulmonary ventilation/perfusion scanning:15 were given thrombolysis therapy with urokinase,and 20 given anticoagulation therapy with low molecular weight heparin.Symptoms,arterial blood gas analysis,electrocardiogram,echocardiogram were compared in two groups before and after treatment.RESULTS:The patients receiving thrombolysis therapy had better improvement in symptoms,arterial blood gas index,echocardiogram and the pulmonary ventilation/perfusion scanning than in those receiving anticoagulation therapy(P

Objective To investigate antimicrobial resistance of Escherichia coli (E.coli)and Klebsiella pneumoniae (K.pneumoniae),antimicrobial use density(AUD),as well as relation between antimicrobial resistance and AUD in a ter-tiary first-class hospital.Methods Antimicrobial resistance rates of clinically-isolated E.coli and K.pneumoniae,AUD of carbapenems and quinolones,as well as relation between resistance and AUD in 2013-2015 were statistically analyzed. Results Correlation analysis of antimicrobial resistance of bacteria and AUD showed that the decrease in resistance rate of E.coli to levofloxacin was related to the decrease in the use density of quinolones(r=0.61,P=0.03);increase in resist-ance rate of K.pneumoniae to imipenem was related to the increase in the use density of carbapenems(r=0.78,P<0.01). Conclusion Antimicrobial use is one of the causes of bacterial resistance,management on antimicrobial use needs to be strengthened to reduce the threat of bacterial resistance to human health.