Objective To explore whether Cdc42 is an independent influence factor in regulating the migration of A549 cells by using quantitative measurement method,and to verify the effectiveness of an automatic measurement and calculation method for in vitro cell migration assay.Methods Cdc42 was overexpressed in human lung adenocarcinoma A549 cell line,and then in vitro scratch assay was applied to evaluate the migration of the cells.Different methods were used to measure the images acquired at different time points for quantitative analysis.Accuracy and repeatability of different measurement methods were analyzed.Results The results showed that overexpression of Cdc42 alone significantly advanced the migration of A549 cells (P＜0.05).The new method is efficient,accurate and reproducible as compared to manual measurement,and has significant advantages in target recognition and noise removal as compared to the existing measurement method in Image Pro Plus 6.0.Conclusions Over expression of Cdc42 significantly increased A549 cell migration ability in vitro.The new method can realize the automatic quantitative analysis of cell migration in vitro.

Objective To explore the possible effects of nutritional supplements on brain function as reflected by Water Maze test performance in mice after +Gz exposure.Method Mice were arranged into control group (group A),+Gz group without nutritional supplementation (group B) and +Gz plus nutritional supplementation group (group C).Each group contains 12 mice.Mice in group A were not exposed to +Gz while mice in both group B and group C were exposed to 8 min +10 Gz.Distilled water was gavaged to group B mice 3 h before +Gz exposure.On the day before +Gz exposure pyridoxol fortified water was given and 3 h before exposure mixed amino acids solution were gavaged to group C mice.Water Maze test was done and scores were recorded in all groups.After the Water Maze test was completed,blood was collected through the eyes for serum amino acid determinations and brain tissue was collected by decollation for monoamine determination and γ-glutamyl transferase (GGT) activity evaluation. Result After +Gz exposure,longer completion time and more mistakes were observed in Water Maze test in group B as compared with group A and a trend of improvement in group C was noticed. The ratio of brain 5-HT to dopamine(DA) was significantly reduced in group C as compared with group B.Gamma glutamyl transferase (GGT) activity in brain tissue in group C and group B increased significantly. Conclusion High sustained +Gz exposure significantly reduces Water Maze test performance in mice (longer completion time and more mistakes).It seems that there is a trend of improvement in Water Maze performance in mice in dietary nutritional supplementation group,which might be due to significant reduction in ratio of brain 5-HT to DA in mice with nutritional supplementation.

Purpose/Significance To explore the research progress of health recommender system(HRS),so as to provide refer-ences for medical personnel to build HRS to help intelligent health care.Method/Process The application of common recommendation technology and HRS in the field of health care is summarized by literature research,and the research status and development direction of HRS is discussed.Result/Conclusion HRS has been applied in health service recommendation,diet recommendation,health behavior promotion,disease prognosis characteristics and health risk prediction,chronic disease management,mental health promotion and medi-cation recommendation,and the related research is conducive to the development of intelligent health care.

OBJECTIVE To investigate the impacts of isorhynchophylline （IRN） on airway inflammation in asthmatic mice by regulating the monocyte chemotactic protein-1 （MCP-1）/CC chemokine receptor 2 （CCR2） signaling pathway. METHODS The asthmatic mice model was established by injecting and inhaling ovalbumin. The successfully modeled mice were randomly grouped into asthma group， IRN low-dose group （IRN-L， intragastric administration of 10 mg/kg IRN）， IRN high-dose group （IRN-H， intragastric administration of 20 mg/kg IRN）， IRN-H+CCL2 group [intragastric administration of 20 mg/kg IRN+intraperitoneal injection of 7.5 ng CC chemokine ligand 2 （CCL2）] and positive control group （intraperitoneal injection of 2 mg/kg dexamethasone）. The mice injected and inhaled with sterile phosphate-buffered solution were included in the blank control group， with 10 mice in each group. The mice in administration groups were given relevant medicine once a day， for consecutive 2 weeks. The levels of airway hyperreactivity indexes such as enhanced （Penh） value， tumor necrosis factor-α （TNF-α），interleukin-13 （IL-13） and IL-4 in serum， the number of eosinophil （EOS）， lymphocyte （LYM） and neutrophils （NEU） in alveolar lavage fluid and the protein expressions of MCP-1 and CCR2 in lung tissue were observed in each group； the pulmonary histopathological changes were observed， and inflammatory cell infiltration score was evaluated. RESULTS Compared with the blank control group， the infiltration of inflammatory cells in the lung tissue of mice was more significant in the asthma group， and there was swelling and shedding of cells； inflammatory infiltration score， Penh value， the levels of IL-4， IL-13 and TNF-α， the number of EOS， NEU and LYM， the protein expressions of MCP-1 and CCR2 were increased significantly （P＜0.05）. Compared with the asthma group， the pathological injuries of the IRN-L group， IRN-H group and positive control group were improved， and the above quantitative indexes were decreased significantly （P＜0.05）. Compared with the IRN-L group， the above quantitative indexes of the IRN-H group and positive control group were decreased significantly （P＜0.05）. There was no statistical significance in the above quantitative indexes between the IRN-H group and the positive control group （P＞0.05）. Compared with the IRN-H group， the above quantitative indexes of the IRN-H+CCL2 group were increased significantly （P＜0.05）. CCL2 reversed the protective effect of high-dose IRN on asthmatic mice. CONCLUSIONS IRN may reduce the release of airway inflammatory factors in asthmatic mice by inhibiting the activation of the MCP-1/CCR2 signaling pathway， so as to achieve the purpose of improving asthma.