Construction Materials ; Dust ; prevention & control ; Occupational Exposure ; prevention & control ; Ventilation ; instrumentation ; Workplace

OBJECTIVETo analyze the change in drug resistance of Staphylococcus aureus (SAU) in the PLA general hospital from January 2008 to December 2012, and to provide solid evidence to support the rational use of antibiotics for clinical applications.

METHODSThe SAU strains isolated from clinical samples in the hospital were collected and subjected to the Kirby-Bauer disk diffusion test. The results were assessed based on the 2002 American National Committee for Clinical Laboratory Standards (NCCLS) guidelines.

RESULTSSAU strains were mainly isolated from sputum, urine, blood and wound excreta and distributed in penology, neurology wards, orthopedics and surgery ICU wards. Except for glycopeptide drugs, methicillin-resistant Staphylococcus aureus (MRSA) had a higher drug resistance rate than those of the other drugs and had significantly more resistance than methicillin-sensitive Staphylococcus aureus (MSSA) (P < 0.05). In the dynamic observation of drug resistance, we discovered a gradual increase in drug resistance to fourteen test drugs during the last five years.

CONCLUSIONDrug resistance rate of SAU stayed at a higher level over the last five years; moreover, the detection ratio of MRSA keeps rising year by year. It is crucial for physicians to use antibiotics rationally and monitor the change in drug resistance in a dynamic way.

Anti-Bacterial Agents ; pharmacology ; Drug Resistance, Multiple, Bacterial ; Humans ; Methicillin-Resistant Staphylococcus aureus ; drug effects ; Staphylococcal Infections ; drug therapy ; Staphylococcus aureus ; drug effects

ObjectiveTo explore the association of smoking to the Aspirin and Clopidogrel antiplatelet in patients with stable angina after percutaneous coronary intervention (PCI). Methods241 smoking patients and 252 non-smoking patients underwent PCI for stable coronary artery disease, all patients had taken aspirin 100 mg/d for 7 d or more. The arachidonic acid (AA)- and adenosine diphosphate (ADP)-induced platelet aggregation were tested as they got in hospital. Then, they accepted Clopidogrel 300 mg as loading dose, continued with 75 mg/d for 3 d. The ADP-induced platelet aggregation were re-tested. ResultsThe incidence of aspirin resistance (AR) and aspirin semiresponder (ASR) was 19.1% in all the cases, and was 25.5% in smoking group, 14.3% in non-smoking group (P=0.027). Age (OR=3.79，95%CI: 1.77～8.12) and smoking (OR=1.98，95%CI: 1.18～4.43) were the independent risk factors of AR and ASR. The incidence of Clopidogrel resistance was 19.5% in all the cases, and was 13.2% in smoking group, 24.3% in non-smoking group (P=0.03). Smoking (OR=0.22，95%CI: 0.09～0.54) may reduce the risk of Clopidogrel resistance. ConclusionSmoking increased the risk of AR and ASR, but reduced the risk of Clopidogrel resistance.

In the experiments we used T_6 medium prepared by ourselves and mixed with diferent concentrations of human serum albumin or mother's serum, from which we prepared follicular flushing medium, insemination medium and growth medium. Clomiphene citrate and HCG were used for inducing superovulation. The semen was obtained through masturbation and artificially capacitated. A mature ovum and 2-3 drops of capacitated semen were incubated together in insemination medium in the culture box containing 5% CO_2 in air atmosphere at 37℃. The ovum was aspirated and transferred into the growth medium and incubated for 16-17 hours. By this time the ovum was already fertilized with the appearance of 2 pronuclei. About 30 hrs, it normally developed into two-cell stage, 40-44 hrs, it cleavaged into 4-cell stage. After 72 hrs, the fertilized ovum grew into morula. Up to June, 1986 twentythree ova in vitro fertilized and cultured were transfered into 14 mothers, uteri at the four-cell stage. The details of fertilization and the early embryo development in vitro were described.

Mesenchymal stem cells (MSCs) have a strong self-renewal capacity and multi-differentiation potential,which make them become ideal seed cells of tissue repair and target cells of gene therapy.However,the labeling and tracing method of MSCs transplanted in vivo is the hot spot and difficult problem of the current research.At present,the commonly used tracer methods of MSCs include fluorescence dye labeling,molecular marker,imaging marker technology.This paper summarized the advantages and disadvantages of these tracer methods.

Humans ; Occupational Health ; Protective Devices ; utilization ; Welding

Adult ; Cranial Fossa, Middle ; anatomy & histology ; surgery ; Ear, Inner ; anatomy & histology ; surgery ; Facial Nerve ; anatomy & histology ; surgery ; Humans ; Male

Objective To study the association between serum interleukin-33 (IL-33) level and human stromelysin-2 (ST2) level in patients with rheumatoid arthritis (RA) associated with interstitial lung disease (RA-ILD) and its correlation with lung function and other laboratory parameters.Methods Two hundred and forty-five newly diagnosed RA patients during March 2012 to March 2013 in the in-patient and out-patient clinic of the First Affiliated Hospital of Liaoning Medical College were enrolled into this study.Patients were further divided into RA group (n=187) and RA-ILD group (n=58).Sixty subjects who came to the hospital for routine health check-up was composed of the normal control group.The clinical data of the two groups and controls were collected and their serum IL-33 and ST2 concentrations were measured.The t test was used to compare the difference between the two groups.Multiple variance analysis was used to com-pare the difference between groups.Pearson's correlation analysis was applied to explore the relationship between IL-33 concentrations and related variables.Results ① This study showed that the prevalence of RA associated interstitial lung disease was 23.7％(58/245).② The concentration of IL-33 [(746±43) pg/ml] and ST2 [(3413±169)pg/ml] of the RA-ILD group was significantly higher than that of the RA group [(433±42) pg/ml,(1500±147) pg/ml] (P＜0.01).③The vital capacity (VC％),forced vital capac-ity (FVC％),maximal midexpiratary flow curve (MMF％) and carbon monoxide diffusing capacity (DLCO) of the RA-ILD group were significantly lower than those of the RA group.④ The serum level of IL-33 was negatively correlated with that of RF and ACPA (IL-33 and RF,r=0.82,P＜0.01; IL-33 and ACPA,r=0.55,P＜0.01).Serum level of IL-33 was negaitively correlated with DLCO (r=-0.80,P＜0.01).Conclusion IL-33 participates in the pathogenesis of RA; and may be involved in the pathogenesis of RA-ILD.

Nowadays, the research performance evaluation in Traditional Chinese Medicine (TCM) is basically exploring the principles and rules. What become the problems are that what index system can fully reflect the TCM performance evaluation, and what method can reflect the characteristics of TCM performance evaluation. Analyzing the status of the Korean research performance evaluation, we briefly disseminated how to establish the TCM performance evaluation.

Objective:To analyze the job preference of doctors at township health center ( THC) and provide references for formulating effective policy. Methods:238 cases of doctors were sampled from Shandong, Anhui and Shaanxi provinces. Using a discrete choice experiment, we analyzed the data with a conditional logit model. Results:The most important job attribution was salary, followed by education for children, permanent post, work location, training opportunity, and years before promotion. The OR value of the monthly income of 8 000 yuan is 7. 0 compared to 2 000 yuan. Doctors will pay 3 857 yuan and 3 294 yuan respectively for better education for children and perma-nent posts. Monthly income increasing to 8 000 yuan will reduce the quitting rate from 35% to 8%, and providing better education for children and permanent posts will reduce 5%. The permanent posts at township health center and non-permanent posts in county hospital have the same appeal to the doctor. Conclusion:When choosing a job, doc-tors at THCs valued salary the most. Improving the education level for children can be beneficial for attracting and re-taining doctors at THCs. A permanent post is more attractive to doctors than non-permanent posts at THCs.