Objective To investigate the current status and influencing factors of stethoscope cleaning and disinfection of medical staff in a tertiary hospital.Methods With simple random sampling,168 medical staff of a tertiary hospital were recruited and surveyed using a self-designed questionnaire.Results 4.88％ of the respondents never cleaned or disinfected stethoscopes,73.17％ of them used alcohol cotton to wipe stethoscopes.After cleaning or disinfecting stethoscopes,83.54％ used natural drying method.Only 33.53％ respondents stored stethoscopes in clean bags or containers while not using them.The mean of respondents' scores of stethoscope cleaning and disinfection was (20.42±3.07)points.There were significant differences in scores of stethoscope cleaning and disinfection between different occupations.However,there were no significant differences among different age groups or different departments.Conclusions The current status of stethoscope cleaning and disinfection of medical staff is not satisfactory.It is imperative for medical staff to improve the drying and storage method and promote their compliance with stethoscope cleaning and disinfection.Appropriate interventions should be taken aiming at the influencing factors of stethoscope cleaning and disinfection.

The technique of liquisolid compress is a new technique developed in 1990s, which was considered to be the most promising technique to improve the dissolution of water-insoluble drugs. In this article, tanshinone II(A) and the extracts of the ester-solubility fractions were chosen as the model drugs to evaluate the effects of the liquisolid technique for enhancement of dissolution properties of tanshinone II(A). Several liquisolid tablets (LS) formulations containing different dosage of drugs and various liquid vehicle were pre-pared and for all the formulations, microcrystalline cellulose and silica were chosen as the carrier and coating materials to evaluate their flow properties, such as angle of repose, Carr's compressibility index and Hausner's ratio. The interaction between drug and excipients in prepared LS compacts were studied by differential scanning calorimetry(DSC) and X-ray powder diffraction (XRPD). The dissolution curves of tanshinone II(A) from liquisolid compacts were investigated to determine the technique's effect in improving the dissolution of tanshinone II(A) and its impacting factors. According to the results, the dissolution increased with the rise in the dissolution of the liquid-phase solvent. The R-value and drug dosage can significantly affect the drug release, but with less impact on active fractions. This indicated that liquisolid technique is a promising alternative for improvement of dissolution property of water-soluble drugs, and can make a synergistic effect with other ester-soluble constituents and bettern improve the release of tanshinone II(A). Therefore, the technique of liquisolid compress will have a better development prospect in traditional Chinese medicines.
Calorimetry, Differential Scanning ; Diterpenes, Abietane ; chemistry ; Solubility ; X-Ray Diffraction

Adenocarcinoma ; blood supply ; metabolism ; mortality ; secondary ; Adult ; Aged ; Female ; Humans ; Lymphatic Metastasis ; Male ; Microcirculation ; Middle Aged ; Neovascularization, Pathologic ; metabolism ; pathology ; Prognosis ; RNA, Messenger ; biosynthesis ; genetics ; Receptors, Cell Surface ; biosynthesis ; genetics ; Receptors, Urokinase Plasminogen Activator ; Stomach Neoplasms ; blood supply ; metabolism ; mortality ; pathology ; Survival Rate ; Vascular Endothelial Growth Factor A ; metabolism

Objective To study the effect of single chain variable fragment (ScFv) antibody to EC3-4 fragment of desmoglein (Dsg) 3 in a mouse model of pemphigus vulgaris.Methods The ScFv an- tibody to EC3-4 fragment of Dsg-3 was injected subcutaneously into neonatal BALB/c mice at different time points;the mice were then evaluated clinically,histopathologically and by direct immunoflorescence exami- nation for the development of lesions.Results When injected alone,the ScFv antibody did not induce the appearance of key clinical features of pemphigus vulgaris.The antibody also did not prevent the develop- ment of pemphigus vulgaris features induced by sera of patients with pemphigus vulgaris,regardless of the time point of injection of ScFv antibody.Conclusion The ScFv antibody to EC3-4 fragment of Dsg-3 lacks pathogenicity in neonatal BALB/c mice,and also could not inhibit the development of lesions induced by sera from patients with pemphigus vulgaris.

Objective To investigate the effects of Skp2 overexpression on the sensitivity of troglitazone (TRG) in breast cancer cells and to devote to develop a novel drug for increasing the patient survival rate and eventually reaching the cure goal .Methods The transcription activities of PPARγ were analyzed on peroxisome proliferators response element(PPRE) luciferase reporter .The flow cytometry analysis and CCK‐8 assay were adopted to study that overexpression of Skp2 was associated with resistance to TRG‐mediated inhibition growth and apoptosis of breast cancer cells .Results Our study found that overexpression of Skp2 inhibi‐ted the transcriptional activity of the endogenous PPARγ and resisted to TRG‐mediated inhibition growth and apoptosis of breast cancer cells .Conclusion Overexpressed Skp2 breast cancer cells is able to be resistant to TRG‐induced sensitivity of breast cancer cells .Furthermore down‐regulating Skp2 will significantly enhance the growth inhibition of TRG on breast cancer cells .

Percutaneous coronary intervention has been the main effective method for coronary heart disease recently, but the post-operative complications became the main factors to limit its curative effect. Considering the understanding on traditional Chinese medicine (TCM) syndromes of post-interventional therapy and the advance of pharmaceutical research we suggest that evolution law of TCM syndrome types should be hold intensively and practical therapies and formulae should be established under the guidance of TCM basic theory.
Animals ; Coronary Disease ; drug therapy ; surgery ; Humans ; Medicine, Chinese Traditional ; methods ; Postoperative Complications ; drug therapy ; etiology ; pathology

Objective To explore the residual undifferentiated mouse embryonic stem cells (ESCs) in embryoid bodies. Methods Mouse R1 and Oct-4-GFP transgenic ESCs were firstly cultured in suspension to form embryoid bodies (EBs). Twenty days later, EBs were digested into single cells and then re-plated in standard ESC culture condition. The morphology of residual undifferentiated cells in EBs was observed, and surface makers and in vitro redifferentiation potency of residual cells were examined by flow cytometry and immunofluoreseent staining. The residual cells were expanded and subcutaneously injected into nude mice, and the specimens were harvested from the injection site for histological analysis 6 weeks after injection. Results There were residual undifferentiated ESCs in EBs differentiated for 20 days, which displayed clonal morphology and expressed undifferentiated cell markers of ESCs, including SSEA1, CD31, CD9 and Oct-4. The cells could be differentiated to form EBs again, and could be re-expanded from secondary EBs. The residual cells were able to form teratoma at the injection site, and mature endoderm, mesoderm and ectoderm tissues could be found in teratoma tissues. Conclusion There are residual undifferentiated ESCs after differentiation of ESCs into EBs. The residual ESCs can differentiate again in vitro and in vivo, and can residue again in the in vitro differentiation.

Ten flavonoids were isolated from the 95% ethanol extract of the seeds of Alpinia galanga Willd. with a combination of various chromatographic techniques, including silica gel, Sephadex LH-20 and preparative HPLC. On the basis of spectroscopic data analysis, they were elucidated as (2R, 3S)-pinobaksin-3-cinnamate (1), (2R, 3R)-pinobaksin-3-cinnamate (2), pinocembrin (3), pinobaksin (4), 3-O-acetylpinobaksin (5), galangin (6), galangin-3-methylether (7), kumatakenin (8), 3-methylkaempferol (9) and (2R, 3R)-3, 5-dihydroxy-7-methoxyflavanone (10). Among them, compound 1 is a new compound, compounds 2, 5 and 10 were isolated from the genus Alpinia for the first time, and others were isolated from this plant for the first time.
Alpinia ; chemistry ; Benzopyrans ; chemistry ; isolation & purification ; Cinnamates ; chemistry ; isolation & purification ; Flavanones ; chemistry ; isolation & purification ; Flavonoids ; chemistry ; isolation & purification ; Kaempferols ; chemistry ; isolation & purification ; Molecular Structure ; Plants, Medicinal ; chemistry ; Seeds ; chemistry

Yeast strains with improved ethanol yield are important for efficient bioconversion of lignocellulosic biomass for fuel ethanol.Candida shehatae CICC1766 was adapted to 4%(v/v)ethanol,and then subjected to UV mutagenesis.One respiration deficient mutant Rd-5 with improved xylose fermentation capability was selected.Protoplasts of Rd-5 were inactivated by UV treatment,followed by the PEG-mediated protoplast fusion with a Saccharomyces cerevisiae strain with good ethanol-fermenting capability.The xylose fermenting capability of the fusants was investigated,and the fusant F6 demonstrated good ethanol fermentation performance,producing 18.75g/L ethanol from 50g/L xylose with an ethanol yield of 0.375 or 73.4% of its theoretical value of 0.511.Comparing with its parent Candida shehatae strain,the ethanol yield of F6 was increased by 28%.

PURPOSE: Family with sequence similarity 83 member H (FAM83H) plays key roles in tumorigenesis. However, the specific roles of FAM83H in cervical cancer (CC) have not been well studied. MATERIALS AND METHODS: The RNA-seq data of 306 CC tissues and three normal samples downloaded from The Cancer Genome Atlas were used to analyze the expression of FAM83H. The Kaplan-Meier method was used to draw survival curves. Associations between FAM83H expression and clinicopathological factors were analyzed by chi-square test. Cox proportional hazards model was used to analyze prognostic factors. Loss-of-function assays were conducted to discover the biological functions of FAM83H in cell proliferation, colony formation, invasion, and migration. Real-time Quantitative Reverse Transcription PCR (qRT-PCR) and Western blotting were used to measure the expression levels of FAM83H in CC cell lines. RESULTS: Our results demonstrated that FAM83H is overexpressed in CC tissues and that high FAM83H expression is associated with worse overall survival (OS). High FAM83H expression in CC was associated with clinical stage, pathologic tumor, and pathologic node. Univariate analysis suggested that FAM83H expression was significantly related to the OS of CC patients. Although multivariate analysis showed that FAM83H expression was not an independent prognostic factor for the OS of CC patients, the effects of FAM83H on CC cell growth and motility was significant. Loss-of-function experiments demonstrated that knockdown of FAM83H inhibited proliferation, colony formation, migration, and invasion of CC cells by inactivating PI3K/AKT pathway. CONCLUSION: FAM83H might play a crucial role in CC progression and could act as a novel therapeutic target in CC.
Blotting, Western ; Carcinogenesis ; Cell Line ; Cell Proliferation ; Genome ; Humans ; Methods ; Multivariate Analysis ; Neoplasm Metastasis ; Polymerase Chain Reaction ; Prognosis ; Proportional Hazards Models ; Reverse Transcription ; Uterine Cervical Neoplasms