Objective To understand the effects of various decoration materials and furniture on indoors air quality. Methods Formaldehyde, benzene and ammonia were monitored in indoor air of some residential buildings in Guangzhou. The residential rooms were divided into two groups, one was simply decorated group, the other was completely decorated group and the two groups were compared. The questionnaire was also carried out. Results The average concentrations of formaldehyde of the two groups were 0.338 mg/m3 and 0.027 mg/m3 respectively, the rates of exceeded standard were 57.14%, 6.67% respectively, and the difference between the two groups was obvious (P

Objective To study the antibacterial property of silver loaded titanium dioxide (TiO2) antibacterial coated endotracheal intubation tube,and to determine the minimum effective antibacterial concentration.Methods Intubation tubes coated with different concentrations of antibacterial agents were prepared with sol gel method.Polyethylene endotracheal intubation tubes were used as substrate,and silver loaded TiO2 was used as the antibacterial agent.According to the different antibacterial concentrations of the antibacterial agent,the tubes were divided into nine groups:10.0％ group,5.0％ group,2.0％ group,1.5％ group,1.0％ group,0.8％ group,0.6％ group,0.2％ group,and conrol group.They were respectively immersed in three standard bacteria suspensions with 1.0 × l05 cfu/mL:Pseudomonas aeruginosa,Staphylococcus aureus,and Escherichia coll Together with standard bacteria liquid group,there were 10 experimental groups.They were kept overnight for 24 hours.10 μL of respective culture medium was smeared on blood agar culture medium.After being cultured overnight in 35 ℃,the number of bacteria colonies was respectively counted.Results In 1.0 × 105 cfu/mL of three standard bacteria liquids with antibacterial agent concentration≥ 1.0％,three bacterial colonies had un-obviously growth rate.Almost the same strong antibacterial effects to achieve sterilizing rates of more than 98％ was shown in each group of the antibacterial coating endotracheal intubation tubes (all P＞0.05).As the antibacterial agent concentration decreased,three bacterial colonies were increasing gradually.Intermediate antibacterial effects were shown in tubes of 0.8％ group,with significant statistic difference as compared with 1.0％ and 0.6％ groups [Pseudomonas aeruginosa:7.300 (4.050,8.350) vs.0.200 (0.050,1.200),9.700 (9.000,10.000); Staphylococcus aureus:4.100 (3.300,4.650) vs.0.000 (0.000,0.150),5.800 (5.350,7.650); Escherichia coli:1.400 (0.750,3.750) vs.0.050 (0.025,0.050),9.500 (8.500,9.800),all P＜0.01].Conclusions Silver loaded TiO2 antibacterial coated endotracheal intubation tube had definite antibacterial properties,which were related to the antibacterial concentration.Strong antibacterial effects were shown when antibacterial concentration was above 1.0％,with bacteria almost completely killed in the immersing liquid.

PurposeStruma ovarii (SO) is rare and has no typical symptoms, which is likely to be misdiagnosed before procure. The present study aimed to evaluate multi-sliced CT (MSCT) findings of struma ovarii so as to improve its imaging diagnosis.Materials and Methods The clinical and radiological data of 25 patients with struma ovarii confirmed pathologically patients were retrospectively analyzed and further compared with the pathological results after procure.Results For 25 SO patients, 22 (88%) had unilateral lesions and the rest 3 (12%) had bilateral ones; 11 lesions (44%) were cystic, 8 lesions (32%) were cystic-solid, and 6 lesions (24%) were solid. The CT images of 8 lesions showed high density cystic lumens. Twenty-five tumors had smooth margins, which appeared round, ellipse or irregular. The pathological findings showed that most of the cystic portions were filled with high proteinaceous gelatinous fluid and eosinophiclic colloid, and the solid portions consisted of thyroid tissue and stoma containing abundant blood vessels and fibrous tissue.Conclusion SO has the MSCT features such as cystic solid mass with unilateral and smooth margin, capsular space with high density, calcification, and solid parts with obvious enhancement.

Objective To understand the distribution situation of respiratory viral infection among adult inpatients with respiratory infection in the emergency department.Methods The detection results data of 5 kinds of viruses RSV,IVA,IVB,PIV1,PIV2,PIV3 and ADV by indirect immune fluorescence assay in 384 adults patients with respiratory infection in the emergency department of our hospital from January 2014 to December 2015 were collected.The epidemic characteristics of different viruses were analyzed.Results Among 384 specimens,208 cases were positive in respiratory virus IgM antibody,the viral infection positive rate was 54.17%.The mixed virus infection and influenza B virus infection were most common,their viral positive rates were 26.56% and 23.44% respectively,In the mixed viral infection,the positive rate of IVA + IVB mixed infection was highest,accounting for 87.25%,which was higher than that of other kinds of mixed viral infection.The viral infection positive rate had no statistical difference between different genders(P>0.05).The viral infection rate was higher in autumn and winter,which were 66.06% and 68.37% respectively and higher than 42.31% and 34.25% in spring and summer,the difference was statistically significant(P<0.05).The viral infection rates of youth (18-45 years old) and middle-aged (>45-60 years old) were 64.94% and 63.86% respectively,which were higher than 48.45%,44.92% and 55.56% in pre-elderly (>60-75 years old),elderly (>75-90 years old) and longevous elderly (>90 years old),the differences were statistically significant(P<0.05).Conclusion The respiratory virus mixed infection and IVB infection are most common in the emergency wards,moreover the viral infection situation shows the seasonal and age characteristics,but which is not affected by sex factor.

Objective To analyze the bacterial distribution and resistance of clinical isolates from exacerbation of COPD patients in C and D classification in our emergency department.Methods The sputums were taken to culture and antimicrobial susceptibility test.VITEK-2 compact automicrobe system was used to identify bacteria.Disc diffusion test was used to determine the antimicrobial resistance.Results Of 222 clinical isolates,27.0％ were Gram positive bacteria,73.0％ were Gram negative bacteria.The Gram positive bacteria mainly was Staphylococcus aureus and Streptococcus pneumoniae.The detection rates of methicillin-resistant Staphylococcus aureus (MRSA) were 50.00％.The MRSA were more resistant than methicillin-sensitive Staphylococcus aureus (MSSA),and they were all sensitive to vancomycin,linezolid or tigecycline.The Gram negative bacteria mainly was Pseudomonas aeruginosa,Escherichia coli,Klebsiella spp and Acinetobacter baumannii.Pseudomonas aeruginosa and Acinetobacter baumannii had high resistant rates.The extended spectrum β-lactamases (ESBLs) producing strains in Escherichia coli were higher than in Klebsiella spp,which had multiple drug resistance.Conclusions The bacterial resistance situation is very severely in exacerbation of COPD patients in C and D classification in our emergency department.The first isolating rate was Pseudomonas aeruginosa.Surveillance of bacterial resistance is very important and effective control measures to reduce resistance is very necessary.

Objective To develop the PCR-denaturing high performance liquid chromatography (DHPLC) for detection of E. Coli O157: H7. Methods The virulence genes of Shiga-like toxin(SLT) and rfbE were specifically amplified by 2 sets of primers. The target gene fragments of the PCR assay were 224 bp and 499 bp, respectively. Results Analysis of 37 strains demonstrated that this PCR system was specific. The detection limit of the PCR was 4 CFU/ml. Conclusion These results indicated that the multiplex PCR-DHPLC assay can be used for specific and sensitive detection of E. Coli O157:H7.

Cytarabine nanoparticle was prepared through emulsion polymerization method, and its releasing properties were studied. The results showed that releasing principle complied with biexponential equation and had characteristics of sustained releasing. The pharmacokinetics in rabbits complied with two-department model. Compared with cytarabine injection, cytarabine nanoparticle had prolonged t 1/2beta and MRT and reduced CL, which showed nanoparticle could significantly prolong the retention time of Ara-C and possess significant sustained releasing character.
Animals ; Cytarabine ; pharmacokinetics ; Delayed-Action Preparations ; Drug Compounding ; methods ; Nanoparticles ; Rabbits

Objective To establish a sensitive HPLC method with UV detection for the determination of tanshinone Ⅱ_A(TSⅡ_A) and cryptotanshinone(CT) in rat plasma and to study pharmacokinetics of Radix Salviae Miltiorrhizae(RSM) liposoluble components in rat in vivo. Methods TS Ⅱ_A and CT in plasma of rat at different sampling time were determined by pretreatment with Gemifibrozil as internal standard,the protein was precipitated in methanol solution after iv administration of alcohol extract of RSM 5 mg/per animal.The mean plasma concentration-time curve was protracted and pharmacokinetic parameters were calculated by 3p87.Results The main pharmacokinetic parameters of TS Ⅱ_A were as follows: t_(1/2?) was(0.088?0.024) h;t_(1/2?) was(2.1?0.7) h;V_C was(0.8?0.6) L;CL was(2.0?1.1) L/h~(-1);AUC_(0-4) and AUC_(0-∞) were(2.2?0.9) mg?h/L and(3.4?1.7) mg?h/L,respectively.Conclusion The concentration-time curve of TS Ⅱ_A can be fitted to two-compartment model after ethanol extract of RSM iv administrated.Concentration of TS Ⅱ_A in rat plasma declines rapidly with large apparent volume of distribution.CT decreases also rapidly and it is difficult to acquire its pharmacokinetic parameters in rat.

OBJECTIVE: To study surgical techniques and clinical applications of the intranasal endoscopic combined middle meatus and expand prelacrimal recess-maxillary ainus approach for orbital fracture treatment. METHOD: A retrospective clinical analysis of 3 patients whose admitted for orbital floor fractures or medial wall fractures operated by the intranasal endoscopic middle meatus with expand prelacrimal recess-maxillary ainus approach surgical treatment was studied, and the treatment effects and the postoperative complications were analyzed. RESULT: All patients had been followed up for 6 to 12 months. All cases of diplopia symptom were disappeared, enophthalmos were totally corrected, no cases of complication were found. CONCLUSION Endonasal endoscopic combined middle meatus and expand prelacrimal recess-maxillary ainus approach for orbital fracture treatment have great and clear view. This approach with less tissue damage and high therapeutic effect makes the cost lower than other methods and complications will be decreased as well, it has a great advantage in the orbital fracture treatment.
Diplopia ; etiology ; therapy ; Endoscopy ; Enophthalmos ; etiology ; therapy ; Humans ; Maxillary Sinus ; surgery ; Nose ; Ophthalmologic Surgical Procedures ; methods ; Orbital Fractures ; complications ; surgery ; Postoperative Complications ; Reconstructive Surgical Procedures ; methods ; Retrospective Studies

Hepatitis B virus (HBV) is regarded as a stealth virus, invading and replicating efficiently in human liver undetected by host innate antiviral immunity. Here, we show that type I interferon (IFN) induction but not its downstream signaling is blocked by HBV replication in HepG2.2.15 cells. This effect may be partially due to HBV X protein (HBx), which impairs IFNβ promoter activation by both Sendai virus (SeV) and components implicated in signaling by viral sensors. As a deubiquitinating enzyme (DUB), HBx cleaves Lys63-linked polyubiquitin chains from many proteins except TANK-binding kinase 1 (TBK1). It binds and deconjugates retinoic acid-inducible gene I (RIG I) and TNF receptor-associated factor 3 (TRAF3), causing their dissociation from the downstream adaptor CARDIF or TBK1 kinase. In addition to RIG I and TRAF3, HBx also interacts with CARDIF, TRIF, NEMO, TBK1, inhibitor of kappa light polypeptide gene enhancer in B-cells, kinase epsilon (IKKi) and interferon regulatory factor 3 (IRF3). Our data indicate that multiple points of signaling pathways can be targeted by HBx to negatively regulate production of type I IFN.
Animals ; B-Lymphocytes ; immunology ; metabolism ; Cell Line ; DEAD Box Protein 58 ; DEAD-box RNA Helicases ; antagonists & inhibitors ; immunology ; metabolism ; Hep G2 Cells ; Hepatitis B virus ; immunology ; metabolism ; Humans ; I-kappa B Kinase ; antagonists & inhibitors ; immunology ; metabolism ; Immune Evasion ; Immunity, Innate ; Interferon Regulatory Factor-3 ; antagonists & inhibitors ; immunology ; metabolism ; Interferon Type I ; antagonists & inhibitors ; immunology ; metabolism ; Mice ; Molecular Targeted Therapy ; Polyubiquitin ; antagonists & inhibitors ; metabolism ; Protein Binding ; immunology ; Sendai virus ; immunology ; metabolism ; Signal Transduction ; immunology ; TNF Receptor-Associated Factor 3 ; antagonists & inhibitors ; immunology ; metabolism ; Trans-Activators ; immunology ; metabolism