Objective:To determine the inflammatory factor levels and inflammatory cell percentages in the patients with cough variant asthma (CVA ), and to clarify their potential role in the pathogenesis of CVA unresponsive to bronchodilator treatment.Methods:60 patients with CVA were randomly selected and divided into CVA unresponsive to bronchodilator treatment group (n=30)and CVA responsive to bronchodilator treatment group (n=30).As the same time 30 cases of healthy persons were used as normal control group.The levels of interluekin-8 (IL-8)and esoinophil cationic protein (ECP)in their induced sputum were detected,the classification of inflammatory cells in their induced sputum were observed, and their scores of cough symptom were recorded. Results:The IL-8 level in the induced sputum of the patients in CVA unresponsive to bronchodilator treatment group was higher than that in CVA responsive to bronchodilator treatment group and normal control group (P<0.05).The ECP level in the induced sputum of the patients in CVA unresponsive to bronchodilator treatment group was lower than that in CVA responsive to bronchodilator treatment group (P<0.05),but it was similar to the level in normal control group (P>0.05).The neutrophil percentages in the induced sputum of the patients in CVA unresponsive to bronchodilator treatment group were higher than those in CVA responsive to bronchodilator treatment group and normal control group (P<0.05).The scores of cough symptom of the patients in CVA unresponsive to bronchodilator treatment group was positively correlated with IL-8 level (r=0.764,P<0.01), and the scores of cough symptom of the patients in CVA unresponsive to bronchodilator treatment group was positively correlated with the neutrophil percentage in induced sputum (r=0.889,P<0.01).Conclusion:IL-8 and neutrophil may be associated with the incidence of CVA unresponsive to bronchodilator treatment. They can aggravate the inflammation and hypersensitivity of airway and cough symptom. The determination of IL-8 and neutrophil can be used as an accessory method in the diagnosis and j udgement of severity degree and curative effect of CVA in clinic.

Objective To investigate the inhibitory effect of ginsenoside Rg3 on herpes simplex virus(type 1(HSV-1) in vitro and) its immunoregulative effect.Methods Crystal violet staining was used to observe the inhibitory effect of Rg3 on the cytopathic effect caused by HSV-1.MTT colorimetry was used to detect the influence of Rg3 on the proliferation of Vero cells and mouse splenocytes.The mouse splenocytes were induced with Rg3,and the activity of IL-2 was detected by lymphoblast proliferation assay and IFN-? by cytopathic effect inhibition.(Results The) A_(570) values of cytopathic effect in the experimental group were significantly higher than those in the control group when doses of Rg3 were 1.56-25 mg?L~(-1) in vitro(P0.05).The secretary levels of IL-2 and IFN-? in experimental group were significantly higher than those in the control group in vitro when doses of Rg3 were(3.13-6.25)mg?L~(-1) (P

Objective To establish reliable tissue culture methods of organ of Corti in neonatal Wistar Rat.Methods The organ of corti was aquired from Wistar Rat with the method of microdissection.The tissues were cultured by two different methods.Results Twenty-four hours after the tissue cultivation,new epithelia cells and fibroblast were found around the tissue.Inner hair cell、outer hair cell and supporting cell grew well.The tissue was stained by Acridine orange and Prodium iodine.It became green,meaning the tissue had good activity.Conclusion The culture of organ of corti we introduced is an a ideal method for otology research.

Objective:To investigate the mechanism of WWOX regulating immunosuppression in Lewis lung cancer cells.Methods:Transfected pCDNA4.0/myc-WWOX plasmid was transfected into Lewis lung cancer cells to detected the effect of cell supernatant on generation of lymphocytes by MTT method,and mRNA expression of immunosuppression factors by semi-quantitative RT-PCR.Function change of NK,CTL to kill tumor and lymphocte proliferation were analyzed by MTT and tumor volume.Results:The suppression of the supernatant to generation of lymphocytes was present compared with control group(P

Objective To investigate the expression of indoleamine 2,3-dioxygenase(IDO)in renal tissues of crescent nephritis and its correlation with cell proliferation and pathologic tubulointerstitial lesion.Methods Immunohistochemistry was used to detect IDO expression in renal tissues of crescent nephritis and normal renal tissues.The correlation between IDO expression and the number of proliferating cell nuclear antigen(PCNA)positive cells or pathologic tubulointerstitial lesion were analyzed.Results IDO expression was found in the renal tubular epithelial cells of crescent nephritis,while that in the normal renal tissues was negative by immunohistochemical staining.The expression of IDO protein in tubular epithelial cells showed a significantly negative correlation with the number of PCNA positive cells or tubulointerstitial lesion of crescent nephritis.Conclusion IDO may participate in the pathogenesis of crescent nephritis by inhibiting the cell proliferation.

Objective:To investigate the rationality of prophylactic antibiotics application during perioperative period in the pa-tients with type Ⅱ incision operation in gynecology and obstetrics in our hospital after the intervention. Methods:Totally 274 medical records of obstetrics and gynecology patients with typeⅡincision operation in our hospital from April 2012 to March 2013 were collect-ed as the control group, another 321 medical records of obstetrics and gynecology patients with typeⅡincision operation in our hospital from April 2013 to March 2014 were collected as the intervention group. The rationality of prophylactic antibiotics application before and after the intervention was compared. Results:Compared with those in the control group, the average administration time, the hos-pitalization time and the cost of antimicrobial agents were significantly decreased in the intervention group (P<0. 05). The incidence of adverse drug reactions and operation incision infection between the two groups was not significant difference (P>0. 05). Compared with those in the control group, the incidence of irrational choice of antibacterial drugs, the combined use without indication, irrational medication time,over-time use, inappropriate use and improper choice of solvents in the intervention group was significantly reduced ( P<0. 05). Conclusion:After the intervention, the rationality of prophylactic antibiotics application during perioperative period in the patients with type Ⅱ incision operation in gynecology and obstetrics in our hospital is improved significantly.

A total of 144 patients with Graves disease were divided into 3 groups according to their disease courses (≤ 1 year,1 year ＜ course ≤ 5 years,＞ 5 years).The bone metabolic biochemical markers and bone mineral density (BMD) of 144 patients with Graves disease and 26 normal controls were observed.Compared with control group,serum levels of calcium,phosphate,alkaline phosphatase and urinary levels of phosphate and magnesium in Graves disease patients were significantly increased(P ＜ 0.01 or P ＜ 0.05),but serum levels of magnesium and 25 (OH) D3,1,25 (OH)2D3 were significantly decreased (P ＜ 0.01 or P ＜ 0.05).BMD of all sites in patients were significantly lower than that of normal controls (P ＜ 0.01 or P ＜ 0.05).

Objective To study the effects of eukaryotic expressive mature peptide LL-37 of human cationic antimicrobial peptide(hCAP-18) on the expressions of membrane molecules on dendritic cells(DCs).Methods By gene cloning,the eukaryotic expressive plasmid pcDNA4/Myc-His-LL-37 for the mature peptide LL-37 of hCAP-18 was constructed.Then they were transfected into HEK293 cell lines.After the cell lines were cultivated for 48 h,the supernatant was collected.Then the DCs from peripheral blood mononuclear cells(PBMCs) induced by rh-GM-CSF and rh-IL-4 were cultivated with the supernatant for 48h.The expressions of membrane molecules CD40 and HLA-DR on DCs were detected by flow cytometry(FCM).Results The eukaryotic expressive plasmid pcDNA4/Myc-His-LL-37 was constructed successfully and it expressed in eukaryotic cells HEK293.FCM results indicated that the expressions of CD40 and HLA-DR on the membrane of DCs which were stimulated by the supernatant produced by pcDNA4/Myc-His-LL-37 were higher than those in control group(P

The Fe-N-C composite catalyst was prepared by the thermal decomposition of the chelate precursors based on Fe central ions and o-phenylenediamine ligands.It was observed from the scanning electron microscopy that the crumpled carbon micro-and nano-sheets were intertwined to form a free-standing tremella-like 3D structure.The N2 adsorption/desorption experiments revealed that the composite contained ample micro-and meso-pores and had a specific surface area of 290 m2/g.Graphitic C and multi-crystal Fe3C as main components were confirmed by the X-ray diffraction, and N-doping in the general form of graphite N and pyridine N was also verified by X-ray photoelectron spectroscopy.The electrochemical measurement showed that the tremella-like Fe-N-C composite catalyzed oxygen reduction through a four-electron path in an alkaline solution, and its activity was comparable to the commercial Pt/C catalyst.After 2000 cycles, the limited current density of the Fe-N-C catalytic electrode only decreased less than 5%, and the half-wave potential shift negatively 5 mV, which suggested that the Fe-N-C composite catalyst had better catalytic stability than the commercially used Pt/C catalyst.

With the range of application of computational biology and systems biology gradually expanding, the complexity of the bioprocess models is also increased. To address this difficult problem, it is required to introduce positive alternative analysis method to cope with it. Taking the dynamic model of the epidemic control process as research object, we established an evaluation model in our laboratory. Firstly, the model was solved with nonlinear programming method. The results were shown to be good. Based on biochemical systems theory, the ODE dynamic model was transformed into S-system. The eigen values of the model showed that the system was stable and contained oscillation phenomenon. Next the sensitivities of rate constant and logarithmic gains of the three key parameters were analyzed, as well as the robust of the system. The result indicated that the biochemical systems theory could be applied in different fields more widely.
Computational Biology ; Epidemics ; Humans ; Models, Biological ; Nonlinear Dynamics ; Systems Biology ; Systems Theory