Chorionic Villi ; metabolism ; pathology ; ultrastructure ; Diabetes, Gestational ; metabolism ; pathology ; Female ; Glucose ; metabolism ; Glycogen ; metabolism ; Humans ; Lipids ; analysis ; Microscopy, Electron, Scanning ; Microscopy, Electron, Transmission ; Placenta ; metabolism ; pathology ; ultrastructure ; Pregnancy

Gene therapy refers to the introduction of normal genes into human target cells for correcting gene defects or exerting therapeutic action,and thus achieves the goal of treatment of disease.Bone marrow stromal cells (BMSCs) are stem cells that possess self-renewal and multi-directional differentiation potential and easy to amplify in vitro,and they also express many therapeutic exogenous genes in vitro or in vivo.So BMSCs have been regarded as an ideal target cell of cell and gene therapy.This article reviews the biological characteristic of BMSCs,some commonly used gene therapy vectors and their applications in gene therapy of central nervous system diseases.

Objective To study whether p38 mitogen-activated protein kinases (p38MAPK) signal pathway were activated in the process of tumor necrosis factor-like weak inducer of apoptosis (TWEAK) which then induces rheumatoid arthritis (RA) fibroblast-like synoviocyte (FLS) to synthesize matrix metalloproteinase-1 (MMP-1) and look for the relative mechanisms of how TWEAK was involved in the destruction of articular bones and cartilage. Methods RA FLS were primarily cultured and stimulated with TWEAK. FLS were pretreated with SB203580 or not. ELISA was used to detect the concentration of MMP-1 in cell-cultured supernatant. Western blotting was used to detect the expression of p-p38MAPK and P65 in RA FLS. Results TWEAK (100 ng/ml) could induce RA FIS to synthesize MMP-1. SB203580 could partially inhibite the expression of MMP-1 producted by RA FLS which was induced by TWEAK. TWEAK could make p38MAPK phosphorylated and increase the expression of P65 protein in the cell nucleus. Conclusion TWEAK induces RA FLS to synthesize MMP-1. In this process, p38MAPK signal transduction pathway is activated and then induce the expression of NF-κB.

Objective To analyze the distribution and drug resistance characteristics of pathogenic bacteria isolated from blood cultures in the infected patients in our hospital during 2009-2013 to provide the newest evidence for the clinical anti-infection ther-apy.Methods The bacterial identification and drug susceptibility test were performed by applying the VITEK-32 System.The dis-tribution situation and the drug susceptibility test results of pathogens isolated from blood culture specimens in our hospital during this period were analyzed.Results 2 301 strains of positive bacteria were isolated from 14 006 cases of blood culture during these five consecutive years.The positive rate was 16.4%.Among them,1 303 strains were Gram positive bacteria(56.6%),954 strains of Gram negative bacilli(41.5%)and 44 strains of fungi(1.9%).Gram-positive bacteria were mainly Staphylococcus aureus,coagu-lase negative staphylococci(CNS),etc.Gram-negative bacteria were mainly E.coli,Klebsiella pneumoniae,etc.E.coli and Klebsiella pneumoniae were highly sensitive to carbapenem,amikacin,cefoxitin and antibacterial drugs containing enzyme inhibitor.The detec-tion rates of extended-spectrumβ-lactamase(ESBL)-producing Escherichia coli and Klebsiella pneumoniae were 55.8% and 18.4%respectively.Acinetobacter baumannii in blood culture had serious resistance to most of antibacterial drugs.Conclusion The kinds of pathogens isolated from blood culture are complex with different sensitivity to antibacterial drugs.Timely understanding the re-sults of blood culture has the important significance to adjust the treatment scheme in clinic and timely discover drug-resistant strains for serve clinic better.

OBJECTIVETo evaluate in vivo pharmacokinetics of Ophiopogonis Radix polysaccharide MDG-1 oily suspension injection prepared with different prescriptions in rats, and explore the feasibility of the long-acting drug delivery of MDG-1 Injection by using the oily suspension drug release system.

METHODMDG-1 microparticles were prepared by the anti-solvent precipitation method. Their size and size distribution were characterized. Castor oil with a high viscosity or aluminum stearate were added into soybean oil with a low viscosity, in order to prepare oily media with different viscosities, detect their rheological properties and screen out superior prescriptions for in vivo evaluation.

RESULTThe average size of microparticles was 21.81 microm, and the span between them was 2.63. The in vivo evaluation was conducted for prescriptions of mixed oil (soybean oil/castor oil, 2: 3) and soybean oils gelled by 2% and 4% aluminium stearate. Among them, the prescription of soybean gelled by 4% aluminium stearate could significantly reduce C(max) and prolong the apparent t1/2, with the MDG-1 release time of several days.

CONCLUSIONIt is feasible to achieve the long-acting MDG-1 drug delivery by using oily media with a high viscosity.

Animals ; Chemistry, Pharmaceutical ; methods ; Drug Delivery Systems ; Drugs, Chinese Herbal ; administration & dosage ; chemistry ; pharmacokinetics ; Male ; Ophiopogon ; chemistry ; Plant Oils ; chemistry ; Polysaccharides ; administration & dosage ; chemistry ; pharmacokinetics ; Rats ; Rats, Sprague-Dawley ; Viscosity

OBJECTIVETo screen the optimized methods for detection seed viability and germination rate determination of Atractylodes macrocephala, and determine the relationship between seed viability and germination rate.

METHODThere were four methods, which including 2,3,5-triphynel tetrazolilum chloride (TTC) staining, red ink staining, BTB staining and Nongjia method, to evaluate the 12 A. macrocephala local varieties'seed viability and measure their germination rate.

RESULTSeed viability of A. macrocephala using TTC staining ranked the first compared to that of other three methods. Seed viability was significantly related with germination rate using TTC method. Their correlation coefficient reached 0.915 and regression equation was also found out between seed viability (X) and germination rate (Y), which was Y = -0.083 4 + 0.995 4X.

CONCLUSIONTTC staining was the optimal method to determine A. macrocephala seed vitality. Furthermore, seed viability was significant related with germination rate of A. macrocephala.

Atractylodes ; physiology ; Germination ; physiology ; Plants, Medicinal ; physiology ; Seeds ; physiology

Cartilage ; diagnostic imaging ; Ectodermal Dysplasia ; diagnosis ; Humans ; Radiography

The ingredients of five kinds of Zhejiang's yellow Chrysanthemum morifolium with different flower blossoming stages were comparatively analyzed. Polysaccharides, total flavonoids, volatile oil, alcohol extract, water extract, chlorogenic acid, luteolin, 3,5-O-dicaffeoyl quinic acid and fingerprint of the ingredient were determined as indicators. During flower blossoming stages, the ingredients of Ch. morifolium showed a big difference with a certain variation. At the early opening stage, the contents of flavonoids and volatile oil were higher, the content of chlorogenic acid, luteolin, 3,5-O-dicaffeoyl quinic acid were higher in the middle of the flowers 50% -80% fowers blossoming degree is the optimal time for harvest.
China ; Chlorogenic Acid ; analysis ; Chromatography, High Pressure Liquid ; Chrysanthemum ; chemistry ; growth & development ; Drugs, Chinese Herbal ; analysis ; Flavonoids ; analysis ; Flowers ; chemistry ; growth & development ; Quality Control ; Quinic Acid ; analysis

Objective To investigate the antibiotic resistance of clinical isolates from hospital for the guidance of rational use of antibiotics .Methods Automatic VITEK‐2 system was used to identify bacterial strains and analyze the antimicrobial resistance . WHONET 5 .6 was applied for data analysis according to the breakpoints of Clinical and Laboratory Standards Institute 2013 . Results A total of 3 880 nonduplicate strains were collected in 2013 ,35 .2% (1 366/3 880) of which were gram positive organisms ,64 .8% (2 514/3 880) were gram negative bacteria .The top 6 most frequently isolated microorganisms were E . coli (20 .2% ) , K . pneumoniae (12 .0% ) , P . aeruginosa (11 .1% ) , coagulase negative Staphylococcus (9 .8% ) , A . baumannii (9 .8% ) ,E .f aecalis (8 .1% ) .The bacteria were mainly isolated from respiratory tract (51 .0% ) ,urine (26 .2% ) , and blood (9 .4% ) .The prevalence of both meticillin‐resistant Staphylococcus was higher than 72 .0% .No staphylococcal strainwasfoundresistanttolinezolid,vancomycinortigecycline.Amongthe509Enterococcusisolates,E.faecalisandE. f aecium accounted for 61 .5% and 32 .8% ,respectively .No enterococcal strain was resistant to vancomycin or tigecycline . Enterococcal isolates also showed low resistance (<2 .0% ) to teicoplanin and linezolid .About 67 .4% of the E .coli strains and 32 .0% of the K lebsiella isolates produced extended spectrumbeta‐lactamases.Thestrainsof E.coli,Klebsiella spp.,Enterobacterspp.,and Proteusspp.wererelatively susceptible to beta‐lactam/beta‐lactamase inhibitor combinations such as cefoperazone‐sulbactam and piperacillin‐tazobactam , carbapenems such as meropenem ,imipenem and ertapenem ,and amikacin (< 15 .0% of the strains were resistant) . K . pneumoniae isolates were more resistant than other gram‐negative bacilli .P .aeruginosa was relatively susceptible to amikacin , tobramycin ,cefepime ,gentamicin ,piperacillin‐tazobactam ,but more than 20% of these strains were resistant to meropenem and imipenem .More than 35 .0% of the A . baumannii isolates were resistant to any of the antimicrobial agents tested . Conclusions Antimicrobial resistance is still a serious threat in clinical antimicrobial therapy .It is important to promote the rational use of antimicrobial agents so that resistance is minimized . It is necessary to conduct epidemiological survey and proactively implement effective interventions in the clinical setting with relatively heavy burden of antimicrobial resistance .

Studies have found that depression is closely related to the hyperactivity of the hypothalamo–pituitary–adrenal (HPA) axis, which is manifested in increases in HPA axis-related hormones CRH, ACTH and CORT contents. Traditional Chinese medical acupuncture can down-regulate HPA axis levels to produce a marked antidepressant effect. However, at present there is no HPA axis mechanism analysis of the antidepressant effect of acupuncture. From two aspects: the relationship between depression and HPA axis, and clinical and animal mechanism studies of the antidepressant effect of acupuncture by regulating the HPA axis, an analysis has been made to provide a more powerful scientific basis and the idea of further in-depth study for clinical acupuncture treatment of depression.