AIM： To investigate the effect of Qinggan Huoxuefang （QGHXF） on improvement of liver function and pathology in rats, and to analyze the mechanism. METHODS： Wistar rats were divided into three groups at random： no...AIM： To investigate the effect of Qinggan Huoxuefang （QGHXF） on improvement of liver function and pathology in rats, and to analyze the mechanism. METHODS： Wistar rats were divided into three groups at random： normal control group （12）, micro-amount carbon tetrachlodde group （CCh）（12） and model group A （60）. The model group A was ingested with the mixture （500 mL/L alcohol, 8 mL/kg per day; corn oil, 2 mL/kg per day; pyrazole, 24 mg/kg per day） once a day and intraperitoneal injections of 0.25 mL/kg of a 250 mL/L solution of CCh in olive oil twice a week for 12 wk. The CCh group received intraperitoneal injections only. At the end of 8 wk the model group A （60） was divided into 5 subgroups： model group, Xiaochaihu Chongji （XCH） group, QGHXF high dose group, moderate dose group and low dose group, and were given the drugs respectively. At the end of 12 wk, all the rats were killed and blood samples collected, as well as liver tissue. Blood samples were used for evaluation of alanine transaminase （ALT）, aspartate aminotransferase （AST）, alkaline phosphatase （ALP）, gamma-glutamyltransferase （y-GT）. Liver specimens were obtained for routine HE, apoptosis gene array and flow cytometry analysis. RESULTS： A liver fibrosis animal model was successfully established. Fibrosis was obviously reduced in QGHXF high dose group, and no fibrosis formed in CCh group. Compared with model group the QGHXF group and XCH group could obviously decrease the level of ALT, AST, ALP, and GGT （P〈0.05）. QGHXF high dose group was better than XCH group in ALT （615± 190 vs 867± 115）,and AST（1972 ± 366 vs 2777 ± 608）. Moreover, QGHXF could reduce liver inflammation, fibrosis-induced hepatic stellate cell （HSC） apoptosis and regulate apoptosis gene expression. The HSC apoptosis rates of QGHXF groups were 22.4±3.13, 13.79±2.26 and 10.07± 1.14, higher than model group, 6.58±1.04 （P〈 0.05）. Compared to model group, 39 genes were up-regulated, 11 solely expressed and 17 down-regulated in high dose group. CONCLUSION： QGHXF can improve liver fibrosis and induce HSC apoptosis.展开更多
Objective To elevate the immunological effect of subunit influenza vaccine in infants and aged people （over 60） using liposomal adjuvant in the context of its relatively low immunity and to investigate the relation ...Objective To elevate the immunological effect of subunit influenza vaccine in infants and aged people （over 60） using liposomal adjuvant in the context of its relatively low immunity and to investigate the relation between vaccine antigens and liposomal characteristics. Methods Several formulations of liposomal subunit influenza vaccine were prepared. Their relevant characteristics were investigated to optimize the preparation method. Antisera obtained from immunizinged mice were used to evaluate the antibody titers of various samples by HI and EL1SA. Results Liposomal trivalent influenza vaccine prepared by film evaporation in combinedation with freeze-drying significantly increased its immunological effect in SPF Balb/e mice. Liposomal vaccine stimulated the antibody titer of H3N2, H1N1, and B much stronger than conventional influenza vaccine. As a result, liposomal vaccine （mean size： 4.5-5.5 pm, entrapment efficiency： 30%-40%） significantly increased the immunological effect of subunit influenza vaccine. Conclusion The immune effect of liposomal vaccine depends on different antigens, and enhanced immunity is not positively correlated with the mean size of liposome or its entrapped efficiency.展开更多
基金Supported by Shanghai Rising-Star program, No. 03QMH1410
文摘AIM： To investigate the effect of Qinggan Huoxuefang （QGHXF） on improvement of liver function and pathology in rats, and to analyze the mechanism. METHODS： Wistar rats were divided into three groups at random： normal control group （12）, micro-amount carbon tetrachlodde group （CCh）（12） and model group A （60）. The model group A was ingested with the mixture （500 mL/L alcohol, 8 mL/kg per day; corn oil, 2 mL/kg per day; pyrazole, 24 mg/kg per day） once a day and intraperitoneal injections of 0.25 mL/kg of a 250 mL/L solution of CCh in olive oil twice a week for 12 wk. The CCh group received intraperitoneal injections only. At the end of 8 wk the model group A （60） was divided into 5 subgroups： model group, Xiaochaihu Chongji （XCH） group, QGHXF high dose group, moderate dose group and low dose group, and were given the drugs respectively. At the end of 12 wk, all the rats were killed and blood samples collected, as well as liver tissue. Blood samples were used for evaluation of alanine transaminase （ALT）, aspartate aminotransferase （AST）, alkaline phosphatase （ALP）, gamma-glutamyltransferase （y-GT）. Liver specimens were obtained for routine HE, apoptosis gene array and flow cytometry analysis. RESULTS： A liver fibrosis animal model was successfully established. Fibrosis was obviously reduced in QGHXF high dose group, and no fibrosis formed in CCh group. Compared with model group the QGHXF group and XCH group could obviously decrease the level of ALT, AST, ALP, and GGT （P〈0.05）. QGHXF high dose group was better than XCH group in ALT （615± 190 vs 867± 115）,and AST（1972 ± 366 vs 2777 ± 608）. Moreover, QGHXF could reduce liver inflammation, fibrosis-induced hepatic stellate cell （HSC） apoptosis and regulate apoptosis gene expression. The HSC apoptosis rates of QGHXF groups were 22.4±3.13, 13.79±2.26 and 10.07± 1.14, higher than model group, 6.58±1.04 （P〈 0.05）. Compared to model group, 39 genes were up-regulated, 11 solely expressed and 17 down-regulated in high dose group. CONCLUSION： QGHXF can improve liver fibrosis and induce HSC apoptosis.
文摘Objective To elevate the immunological effect of subunit influenza vaccine in infants and aged people （over 60） using liposomal adjuvant in the context of its relatively low immunity and to investigate the relation between vaccine antigens and liposomal characteristics. Methods Several formulations of liposomal subunit influenza vaccine were prepared. Their relevant characteristics were investigated to optimize the preparation method. Antisera obtained from immunizinged mice were used to evaluate the antibody titers of various samples by HI and EL1SA. Results Liposomal trivalent influenza vaccine prepared by film evaporation in combinedation with freeze-drying significantly increased its immunological effect in SPF Balb/e mice. Liposomal vaccine stimulated the antibody titer of H3N2, H1N1, and B much stronger than conventional influenza vaccine. As a result, liposomal vaccine （mean size： 4.5-5.5 pm, entrapment efficiency： 30%-40%） significantly increased the immunological effect of subunit influenza vaccine. Conclusion The immune effect of liposomal vaccine depends on different antigens, and enhanced immunity is not positively correlated with the mean size of liposome or its entrapped efficiency.
