Air ; analysis ; Chromatography, Gas ; methods ; Ethylene Oxide ; analysis ; Furans ; analysis ; Methylene Chloride ; analysis ; Workplace

Adult ; Age Factors ; Air Pollutants, Occupational ; toxicity ; Humans ; Male ; Middle Aged ; Occupational Exposure ; Police ; Pulmonary Diffusing Capacity ; physiology ; Pulmonary Ventilation ; physiology ; Respiratory Function Tests ; Smoking ; adverse effects ; Vehicle Emissions ; toxicity

Animals ; Brain Edema ; prevention & control ; Brain Ischemia ; physiopathology ; Erythropoietin ; pharmacology ; Female ; Hippocampus ; metabolism ; pathology ; Male ; Nitric Oxide ; metabolism ; Protective Agents ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; prevention & control ; Superoxide Dismutase ; metabolism

Child, Preschool ; Coronary Aneurysm ; etiology ; pathology ; Coronary Vessels ; pathology ; Female ; Humans ; Infant ; Male ; Mucocutaneous Lymph Node Syndrome ; complications ; pathology

Objective To discover radioresistance associated molecular biomarkers and its mechanism in nasopharyngeal carcinoma by protein-protein interaction network analysis.Methods Whole genome expression microarray was applied to screen out differentially expressed genes in two cell lines CNE- 2R and CNE-2 with different radiosensitivity.Four differentially expressed genes were randomly selected for further verification by the semi-quantitative RT-PCR analysis with self-designed primers. The common differentially expressed genes from two experiments were analyzed with the SNOW online database in order to find out the central node related to the biomarkers of nasopharyngeal carcinoma radioresistance. The expression of STAT1 in CNE-2R and CNE-2 cells was measured by Western blot.Results Compared with CNE-2 cells,374 genes in CNE-2R cells were differentially expressed while 197 genes showed significant differences.Four randomly selected differentially expressed genes were verified by RT-PCR and had same change trend in consistent with the results of chip assay. Analysis with the SNOW database demonstrated that those 197 genes could form a complicated interaction network where STAT1 and JUN might be two key nodes.Indeed,the STAT1-α expression in CNE-2R was higher than that in CNE-2 (t =4.96,P ＜ 0.05).Conclusions The key nodes of STAT1 and JUN may be the molecular biomarkers leading to radioresistance in nasopharyngeal carcinoma,and STAT1-α might have close relationship with radioresistance.

The thermostability of the inulinase was studied in this resea rc h. Some alcoholic materials and thickening agent could enhance the thermostabli lity of the inulinase. Using glycerol、xanthic pastern and though orthogonal ex periments of three elements and three levels, a satisfying protective agent, whi ch included glycerin(6%), xanthan gum(0.6%) and CaCl_2 (100mmol/mL) and ha d a significant effect on the enhancement of the inulinase thermostability, was acquired.

OBJECTIVEPurpose of the study was to investigate the content of Nickel (Ni) and Chromium (Cr) ion in gingival tissue and blood, and to discuss the reason of gray line in gingival after wearing non-noble Porcelain-Fused-to-Metal crown.

METHODS38 rabbits were selected as experimental animals which were divided into three groups: control group, group 1 (3 months) and group 2 (6 months). The content of Ni and Cr ion in gingival tissue and blood was detected by atomic absorption spectrometer.

RESULTSThe amount of Ni and Cr in group 2 was significantly higher than that in other groups (P < 0.05) . There was no difference between group 1 and control group (P > 0.05) .

CONCLUSIONThe reason of gingival colouration might be the electrochemical corrosion. The metal ion was released in gingival tissue and blood.

Animals ; Chromium ; blood ; chemistry ; Crowns ; Dental Porcelain ; Gingiva ; chemistry ; Hares ; Nickel ; blood ; chemistry

Antineoplastic Agents ; therapeutic use ; Carcinoma, Non-Small-Cell Lung ; drug therapy ; genetics ; Drug Delivery Systems ; Erlotinib Hydrochloride ; Female ; Genes, erbB-1 ; Humans ; Lung Neoplasms ; drug therapy ; genetics ; Male ; Mutation ; Protein Kinase Inhibitors ; therapeutic use ; Quinazolines ; therapeutic use ; Receptor, Epidermal Growth Factor ; antagonists & inhibitors ; genetics

Objective To investigate the correlation risk factors of diabetes over 16-year-olds at the community level in Chongqing and to set a quantitative criteria for determining risk for diabetes and to identify persons having potential risk.Methods 1981 cases with 1:2 matched controls were chosen from five communities in Chongqing including Shapingba,Xiaolongkan,Tianxingqiao,Yubei Road,Ciqikou,which were interviewed with a uniformed questionnaire.The risk factors of diabetes mellitus were analyzed with logistic regression,and to calculate the odds ratios of risk factors for diabetes.Different levels of risk exposure factors were converted into a risk scores,using statistical models.Results An individual health risk appraisal model of diabetes was established,applicable to individuals of different sex,age,health behavior,disease,and family history,for men,13 risk factors including hyperlipidemia(14.995),coronary heart disease(6.689),family history of hypertension(4.005),smoking(3.111)etc.while for women,hyperlipidemia(12.426),family history of hypertension(3.986),stroke(2.714),liking sweets(1.244),about 15 risk factors,were entering the main effect model.The related risk scores were added to obtain a combined risk score to predict the individual's risk of diabetes in the future.Conclusion The incidence of diabetes could be effectively reduced by changing the unhealthy lifestyle and curing the patient with the disease.Evidence was provided to persuade people change their unhealthy lifestyles and behaviors through health education.The results could also be used in community to improve their health services.

Objective Acute pulmonary thromboembolism(PTE)patients with right ventricular dysfunction(RVD)may benefit from thrombolytic therapy but may end up with worse prognosis.RVD was assessed in prognosis to which a model on it was constructed to decide the indexes correlated to the best prognosis.Methods This prospective study included 520 consecutive acute PTE patients from 41 hospitals in China between June 2002 and February 2005.All the patients were evaluated by transthoracic echocardiography(TTE),CT pulmonary angiography(CTPA),laboratory tests,and blood gas analysis.Physicians were asked to record all the clinical manifestations.Data from Univariate analysis demonstrated the parameters correlated with an 14-day clinically adverse outcomes.Multiple logistic regression analysis was used to decide the independent predictors and to construct a prognostic model.Results Mcan age of the patients was 57.4±14.1 years and 323 of them(62.1%)were male.The 14-day mortality in normotensive patients with RVD was higher(2.0%vs0.4%,P＜0.01)than those without.ROC curve showed the best cut.ofr values of RVED/LVED and SPAP for 14-day prognosis were 0.67 and 60 mm Hg,respectively.SPAP independently predicted 3-month clinicaI outcomes(P＜0.01).Results from Univariate analysis demonstrated tllat 24 parameters were correlated with an adverse 14-day clinical outcomes.which include palpation,syncope,panic,cyanosis,respiratory rate≥30/min,pulse≥110/min,jugular vein,accentuation of P2,murmurs in tricuspid area,time interval from onset,creatine phosphokinase(CPK),lactate dehydrogenase (LDH).alveolar-arterial PO2 difierence(PA-aO2),white blood cell(WBC)＜4.0×109/L or＞10.0×109/L,platelet.thrombus on TTE,RV/LV＞1.1,TRPG＞30 mm Hg,IVCmin＜8 mm,RVD,RVED/LVED＞0.6,SPAP＞60 mm Hg.RVWM.PTE range larger than two lobes or seven segments on CTPA.Furthermore,a multiple logistic regression model implied 8 predictors including RVD,RVED/LVED＞0.6,SPAP＞60 mm Hg,pulse≥110/min,accentuation of P2,Syncope,CPK,WBC＜4.0×109/L or＞10.0×109/L be independent predictors of an 14-day clinically adverse outcome(P＜0.01).This model seemed to fit well (P＜0.001).Wle chose a cut-off value as P≥0.2 and compared the model to the original derivation samples.Data showed that the sensitivity(true positive rate)was 81.82%,specificity was 92.11%.false positive rate was 18.18%.coincidence was 91.14%.and the concordarlCe rate was 80.96%.Conclusion RVD seemed a nice discriminator for poor prognosis in norrnotensive patients.Early detection of RVD(especially RVED/LVED＞0.67 and/or SPAP＞60 mm Hg)was beneficial for identifying patients at high-risk and the multiple logistic regression model(P＜0.001)could be well fitted.