Background and purpose:Hypoxia induced the decreased radiosensitivity of tumor cells, which was the cause of tumor radioresistance and relapse and metastasis. During the course, HIF-1a played the most important role in the regulation of hypoxia. However, it’s still unknown about the effect of HIF-1a on the radiosensitivity of hypoxia tumor cells and the relationship with autophagy. This study was to inhibit HIF-1αexpression in hypoxic lung adenocarcinoma cell line A549 with RNA interference (RNAi), and explore its effect on hypoxic cell radiosensitivity and autophagy. Methods: Plasmids pHIF-1α-shRNA and Neg-shRNA (negative control) were constructed and transfected into hypoxic A549 cells, this positive clone was named A549/HIF-1α-shRNA. Clone formation array was applied to calculate the value of D0, SF2, SER. The expression of HIF-1α, LC3, c-parp was detected by Western blot. Results:The SF2 of hypoxic A549 cell was 0.62, which was higher than that of normoxic A549 cell, SER was 1.45. The level of LC3Ⅱincreased significantly and the level of c-parp decreased after the radiation of hypoxic A549 cell. The level of HIF-1a increased in hypoxic A549 cells. The expression of HIF-1αin hypoxic A549 cells was suppressed markedly after transfection of HIF-1α-shRNA;this clone was named A549/HIF-1α-shRNA. The SF2 and SER were significantly lower in A549/HIF-1α-shRNA cells, 0.45 and 0.72 respectively. Under the hypoxic condition and after the inhibition of HIF-1α, the expression of LC3Ⅱ decreased significantly and the expression of c-parp increased. Conclusion:We successfully established a cell model that HIF-1αexpression was suppressed almost completely by RNAi. The inhibition of HIF-1αby shRNA may raise the radiosensitivity and decrease the autophagy of hypoxic A549 cells in vitro.

Objective: To observe the effects of medicinal extract for tonifying kidney to relieve asthma on glucocorticoid receptor (GR) expression in rats with asthma, and to explore its mechanism in treating asthma. Methods: Sixty SD rats were randomly divided into normal control group, untreated group, dexamethasone group, and medicinal extract-prevented, medicinal extract-treated, and medicinal extract-prevented and -treated groups, with ten rats in each group. Asthma was induced by intraperitoneal injection of ovalbumin (OVA) and forced inhalation of atomized OVA. Expression of GR in lung tissues was detected by immunohistochemical method. Pathological changes of the lung tissues were observed by HE straining. Results: Expression of GR was lower in the untreated group than in the normal control group (P<0.05). Expressions of GR in medicinal extract groups were up-regulated as compared with those in the untreated group and dexamethasone group (P<0.05, P<0.01), and there were no significant differences as compared with the normal control group (P>0.05). Conclusion: Medicinal extract for tonifying kidney to relieve asthma can increase the expression of GR in lung tissues of asthmatic rats, which may be one of its mechanisms in preventing and treating asthma.

Objective To explore the relationship between cough variant asthma (CVA) and mycoplasma pneumoniae (MP) infection.Methods Fifty children with CVA were chosen as the experimental group at random,and 50 children with acute upper respiratory infection,who went to the hospital in the same time and with similar age,were chosen as control group.The MP-IgM of children in both groups were tested by the granule agglutinating method.Results Significant difference (? 2=9.013 P

Animals ; Animals, Newborn ; Apoptosis ; drug effects ; Cell Survival ; drug effects ; Cells, Cultured ; Cerebral Cortex ; cytology ; drug effects ; Dose-Response Relationship, Drug ; Neurons ; drug effects ; Nickel ; toxicity ; Rats ; Rats, Wistar

Actins ; metabolism ; Aged ; Aged, 80 and over ; Carcinoma, Renal Cell ; metabolism ; pathology ; Cell Differentiation ; Female ; Humans ; Immunohistochemistry ; Keratin-7 ; metabolism ; Keratin-8 ; metabolism ; Kidney Neoplasms ; metabolism ; pathology ; Male ; Middle Aged ; Sarcoma ; metabolism ; pathology ; Vimentin ; metabolism

Objective: To observe the clinical efficacy of Tuina (Chinese therapeutic massage) plus needling the distal acupoints along the pathway of meridians for shoulder periarthritis (SP). Methods: A total of 70 patients with SP were divided into an observation group and a control group using the random number table method, with 35 cases in each group. The patients in the observation group were treated by Tuina combined with needling distal acupoints along the pathway of meridians, while those in the control group only received the same Tuina treatment as in the observation group. The visual analog scale (VAS) and shoulder joint function were scored before and after treatment, and the efficacy after treatment was evaluated. Results: After three courses of treatment, the total effective rate of the observation group was 94.3％, while the total effective rate of the control group was 80.0％, showing a statistical difference (P<0.05). After treatment, the VAS scores of the two groups were significantly lower than the baseline scores (P<0.01), and the VAS score of the observation group was lower than that of the control group (P<0.01). After treatment, the total scores of internal rotation, external rotation, back touching, ear touching and motion function in the two groups were significantly higher than those before treatment (P<0.01), and the above five scores in the observation group were significantly higher than those in the control group (P<0.01). Conclusion: Tuina combined with needling the distal acupoints along the pathway of meridians is more effective than Tuina alone in treating SP. The combined therapy can relieve the pain and improve joint function more effectively.

OBJECTIVETo establish a new method and validate its feasibilities for quality evaluation of Fructus Epimedii.

METHODFour main effective flavones, epimedin A, epimedin B, epimedin C and icariin were selected as analytes to evaluate the quality of Fructus Epimedii. The relative correction factors (RCF) of icariin to the other three flavones were calculated. The method was evaluated by comparison of the quantitative results between external standard method and QAMS method.

RESULTNo significant differences were found in the quantitative results of three flavones by external standard method and QAMS method.

CONCLUSIONIt is feasible and accurate to evaluate the quality of Fructus Epimedii.

Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; chemistry ; Flavonoids ; analysis ; Reproducibility of Results ; Statistics as Topic ; methods ; Time Factors

AIMTo establish HPLC chiral separation method for ketoprofen enantiomers by using Chirobiotic V chiral seperation phase (CSP) (A) and vancomycin as chiral mobile phase additives (B).

METHODSThe separation was first performed on Chirobiotic V CSP with the mobile phase of terahydrofran (THF)-0.5% triethylanine acetate(TEAA) buffer (15:85) at the flow rate of 0.7 mL.min-1. When using vancomycin as chiral mobile phase additive, the separation was carried out on C8 column (150 mm x 4.6 mm), the mobile phase was methanol-0.25% TEAA buffer (50:50), the flow rate was 0.7 mL.min-1. The effects of the concentration of vancomycin, organic modifier and the pH of the buffer on the resolution of ketoprofen enantiomers were investigated. Also, the feasibility of these two methods to be used as quantitative method was studied.

RESULTSKetoprofen enantiomers were separated at a baseline level under the chromatographic condition of both methods A and B, the resolution was 2.28 and 2.22, respectively. In method A the linearity of enantiomer was obtained from 0.5 mg.L-1 to 100 mg.L-1, the detectionlimit was 1 microgram.L-1. When using vancomycin as mobile phase additive the system was shown to have a high efficiency. In this system, the assay of enantiomer is linear from 2.5 mg.L-1 to 250 mg.L-1. The detection limit was 14.5 micrograms.L-1.

CONCLUSIONBoth methods can be used to detect optical purity of S-(+)-ketoprofen.

Anti-Inflammatory Agents, Non-Steroidal ; isolation & purification ; Chromatography, High Pressure Liquid ; Hydrogen-Ion Concentration ; Ketoprofen ; isolation & purification ; Stereoisomerism ; Vancomycin ; chemistry

Objective To explore the clinical feature of severe enterovirus 71 (EV71) associated hand foot and mouth disease (HFMD),and genotype of EV71.Methods Fluorescent quantitation PCR was done for detecting EV71.RT-PCR was performed to amplify VP1 for sequencing and identifying genotype.A retrospective analysis was performed based on the clinical data of 15 cases with severe EV71 infection.Results EV71 nucleotide was positive in all 15 cases.The genotype of EV71 was C4.All cases had abnormal temperature and followed with nervous symptoms in the early stage.Average time was 1.26 days from onset to severe complications appearance.Eleven cases progressed to neurogenic pulmonary edema.Four cases accepted nasal continuous positive airway pressure.Eleven cases accepted oral trachea cannula mechanical ventilation.Except for 3 cases died,one case abandoned,others 11 cases were cured.Conclusion The isolated strains of EV71 in this study are all C4 genotype.All cases with severe EV71 infection were followed with nervous symptoms in the early stage,most of whom would progress to neurogenic pulmonary edema.The mortality would be cut down by using mechanical ventilation in early stage.

OBJECTIVEThe research aimed at studying the biological characteristics of rhizobia isolated from Abrus cantoniensis.

METHODThe rhizobia strains, isolated from different environments in Guangxi, were studied for their growing characters and the generation time. They were also compared for survival capabilities under stresses caused by NaCl, pH, temperature, and different kinds and concentration of antibiotics.

RESULTThe strains obtained from A. cantoniensis in subtropical zone produced alkali in YMA medium, the average generation time was 14.8 hours, and thus they belong to slow-growing rhizobia. Rhizobia strains differed greatly in respect to tolerance of high temperature, adaptability of acidic environment and sensitivity to four antibiotics, but they had the same abilities of using different carbon and nitrogen sources. After 70 days from inoculated strains, the seedling formed nodules on the root (85.0%), and the dry matter of vine was increased by 51.1%.

CONCLUSIONThe rhizobia strains isolated from different ecological environments are good germplasm resources of tolerances to high temperature and acidic environment. The research will greatly help utilize the rhizobia resources and enhance the quality of crude drugs of medicinal leguminosae.

Abrus ; microbiology ; Anti-Bacterial Agents ; pharmacology ; Culture Media ; Hydrogen-Ion Concentration ; Nitrogen Fixation ; Plants, Medicinal ; microbiology ; Rhizobium ; drug effects ; growth & development ; isolation & purification ; Temperature