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Objective To compare and analyze the differences and characteristics of three strain mouse models in-fected by influenza virus aerosol inhalation, and provide the reference for choosing the appropriate infection model in the re-search of pathogenesis of influenza and the development of vaccines and drugs.Method C57BL/6, BALB/c and ICR mice were infected with A/Puerto Rico/8/34 (H1N1) virus strain by aerosol inhalation.The symptoms and body weight of mice were observed every day.At 3, 7, 14 days after infection, the mice were sacrificed.The lungs of mice were weighed, then virus assay and pathological observation were carried out.Results The three strains of mice were infected.The sur-vival rate in the C57BL/6 mice was lower than those in the BALB/c and ICR mice.The lung index and viral load of C57BL/6 mice were significantly higher than those of ICR mice ( P<0.05) at 3 days after infection.The pathological changes of C57BL/6 mice were also more obvious than other two strains.Compared with other two mouse strains, the weight recovery of BALB/c mice was the slowest.The survival rate in BALB/c mice was higher than that of C57BL/6 mice and lower than that of ICR mice.The lung index and viral load were not significantly different among the three strains of in-fected mice.The pathological changes among the three strains of infected mice were similar, but the degrees of pathological changes in the BALB/c mice were milder than in the C57BL/6 mice and worse than in the ICR mice.Compared with other two mouse strains, the process of disease is similar, but the body weight, mortality, lung index, viral load, and the micro-scopic pathological changes were lighter in the ICR mice than in the other two strain mice.Conclusions The three strain mouse models can be established by influenza virus aerosol inhalation, but showing different characteristics.Appropriate strain mice can be chosen to build model according to different research purpose in the experiment.
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Objective:To establish a method for the determination of atractylodin, magnolol and honokiol in Xiangshapingwei pills by GC. Methods:An HP-5 column (30 m × 0. 32 mm × 0. 25 μm) with an FID detector was used, and the flow rate of the carrier gas (N2) was 2. 0 ml·min-1. The column temperature was raised by program: the initial temperature was 100℃ and maintained for 7 min, and then raised to 250℃ at the rate of 20℃·min-1 and kept for 10min. The inlet temperature was 300℃ and the detector tem-perature was 300℃. The injection volume was 1 μl and the split ratio was 20∶ 1. Results:The linear range of atractylodin, magnolol and honokiol was 4. 264-85. 280 μg·ml-1(r=0. 999 7), 9. 856-197. 120 μg·ml-1(r=0. 999 5) and 10. 040-200. 800 μg·ml-1 (r=0. 999 6), respectively. The average recovery wsa 98. 2%, 98. 6% and 99. 3% with RSD of 1. 5%, 1. 5% and 1. 9%, respec-tively (n=6). Conclusion:The method is simple, accurate and reliable, which can be used for the quality control of Xiangshaping-wei pills.
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Objective To obtain the full-length cDNA sequences of CYP2E1,CYP2D5,ECHS1,which may be related with non-alcoholic fatty liver disease,from Microtus fortis.Methods To construct Microtus fortis liver cDNA plasmid library using SMART technique,to get the purposed colonies through screening libraries by PCR,and to obtain their full-length cDNA sequences by sequencing with pBluescript II SK universal primers M13R.Results Three full-length cDNA sequences of Microtus fortis,CYP2E1,CYP2D5 and ECHS1 were obtained.The CYP2E1 cDNA was 1685 bp in length and contained a 1482 bp open reading frame(ORF) encoding a 494 amino acids.The CYP2D5 cDNA was 1690 bp in length,and contained a 1514 bp ORF encoding 504 amino acids.The ECHS1 cDNA was 1013 bp in length,and containsed an 873 bp ORF encoding 290 amino acids.Sequence analysis revealed that the identity of the three cDNA sequences and deduced amino acids among Microtus fortis,Homo sapiens,Mus musculus and Rattus norvegicus was high.Conclusion The full-length cDNA sequences of CYP2E1,CYP2D5,ECHS1 were obtained from Microtus forti,liver cDNA library.and the gene sequences have been deposited in GenBank (GQ507485,GQ507486,GQ845171),which may lay the foundation for researchies of pathogenesis of non-alcoholic fatty liver disease in Microtus fortis models.
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<p><b>OBJECTIVE</b>To determine quercetin and kaempferol in the plant of genus Dysosma that come from different species, different plant parts or different growing areas, which provide the basis of rational utilization of Dysosma plants.</p><p><b>METHOD</b>The analysis was performed on a Diamonsil C18 column (4.6 mm x 150 mm, 5 microm) eluted with the mobile phase of methanol-water containing 0.1% phosphoric acid (60:40). The flow rate was 1 mL x min(-1), the detection wavelength was 360 nm; and the column temperature was set at 25 degrees C.</p><p><b>RESULT</b>The linear ranges of quercetin and kaempferol are 0.22-1.1 microg and 0.42-2.1 microg. The average recoveries of quercetin and kaempferol are 97.1% (RSD 1.4%) and 99.6% (RSD 2.4%); respectively.</p><p><b>CONCLUSION</b>The contents of flavones in different species of Dysosma are significantly different.</p>
Subject(s)
Berberidaceae , Chemistry , Chromatography, High Pressure Liquid , Methods , Chromatography, Reverse-Phase , Methods , Drugs, Chinese Herbal , Kaempferols , QuercetinABSTRACT
Objective:To investigate influences of two different HLA-B antigens expressed on K562 cells on receptors expression of NK cells from peripheral blood lymphocytes.Methods:Studied the alteration of the percentage of CD16+CD56+ cells and the percentage of KIR3DL1+ cells before and after PBMC interaction with K562 cells for 24 hours,and also compared the percentage of CD16+CD56+ cells and the percentage of KIR3DL1+ cells after PBMC interaction with two different kind of K562 cells transfected with HLA-B39 and HLA-B51 respectively.Results:After PBMCs were incubated with K562 cells for 24 hours,the percentage of CD16+CD56+ cells and the percentage of KIR3DL1+ cells were both increased.However,after PBMCs were incubated with K562-HLA-B51 cells for 24 hours,the percentage of KIR3DL1+ cells and the percentage of CD16+CD56+ cells were both decreased in comparison with that interaction with K562-HLA-B39 cells.Conclusion:CD16 up-regulation was associated with an up-regulation of inhibitory receptors(KIR3DL1).The interaction between HLA-Bw4 and KIR3DL1 would down-regulate the expression of KIR3DL1.In addition,KIR3DL1 down-regulation was associated with down-regulation of activating receptors(CD16).
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Objective:To investigate the adjusting role of Chinese herb purpura No.1 on the immune function of henoch-schonlein purpura(HSP).Methods:100 HSP children were divided into Chinese herb group and western medicine group with 1∶1,observing the effects of two groups and compare T lymphocyte subgroups such as CD3,CD4,CD8,CD4/CD8 and the level of IgG,IgA,IgM of two groups between before-treatment and after-treatment.Results:The effect and the adjusting role on the HSP children′s immune function of Chinese herb group was better than that of western medicine group while the recurrence rate of Chinese herb group was lower than that of western medicine group.Conclusion:Chinese herb can adjust the immune function and condense the symptoms′ duration time of HSP children. It also can decrease the recurrence rate of HSP children.