Quality Analysis of Snake Bile and Its Preparations / 中国药学杂志

OBJECTIVE： To study the bile acid components in snake bile and other animal bile, and establish the quality control method of the snake bile and its preparations. METHODS： Acetonitrile-methanol and 10 mmol•L-1 ammonium acetate was used as mobile phase system and 18 alkyl silane bonded silica gel was used as filling agent. Liquid chromatography-mass spectrometry was used to qualitatively identify and quantitatively analyze the bile acid components in snake bile and other animal bile, and the adulteration control and content determination method of bile acid in snake bile and its preparations were optimized to establish a suitable quality control method of snake bile and its preparations. RESULTS： The examination method was highly specialized and suitable for the quality control of snake bile and its preparations.The linear relationship of sodium taurocholate between 0.302-9.053 μg is good, r=0.999 3, the repeatability test and accuracy test results are good, and the RSD is smaller than 3.0%. CONCLUSION： The established quality control method can guarantee the quality and safety of snake bile and its preparations.

Effects of Mesenchymal Stem Cells on Proliferation and Immunomodulation of B Cells / 中山大学学报(医学科学版)

@#【Objective】To study the effect of mesenchymal stem cells（MSC）on proliferation and immunomodulation of B cells in vitro.【Methods】Bone marrow 30 mL from healthy donors was isolated by density gradient centrifugation. Isolated MSC were cultivated adherently with L- DMEM medium containing 10% fetal bovine serum（FBS）. Phenotype and differentiation capacity of MSC was detected after the sixth passage. Peripheral blood mononuclear cells（PBMC）of healthy donors were also obtained by density gradient centrifugation. CD19+ B cells were sorted by fluorescence activated and co-cultured with MSC（CD19+ B∶MSC = 5∶1）group. Stimulated by CpG+ CD40L，the proliferation of B cells of two groups were checked 96 hours after co-culture respectively. The CD19+CD5+ B cells percentage and its secretion of IL-10 were detected by FACS. The effects of CD19+ B cells on the proliferation of CD4+ T cells and the secretion of IFN-γ were continually observed. Anti-IL-10 was used to confirm the effect of B cells on proliferation and IFN-γ secretion of CD4+ T cells.【Results】MSC collected from healthy donors remained differentiation capacity. MSC derived from bone marrow expressed CD29，CD44，CD73，CD90，CD105，and CD166，but did not express CD45 and CD34. Compared with control group，the proportion of CD19+ B cells proliferation in co-cultured group was significantly increased after 3 days，meanwhile，the level of IFN-γ，which secreted by CD4+ T cells was significantly restrained. To make a further analysis of the subsets of CD19+ B cells，the percentage of CD5+ B cells in co-cultured group increased from（21.31±1.22）% to（31.27±0.92）%（P=0.014），and its IL-10 secretion increased from（1.09±0.08）% to（2.44±0.06）%（P<0.001）compared with control group. After anti-IL-10 was used，the B cells co-cultured with MSC showed a decreased capacity of inhibiting the proliferation and IFN-γ secretion of CD4+ T cells.【Conclusions】MSC could promote the proliferation of CD19+ B cells to inhibit the secretion of IFN-γ by CD4+ T cells，which may be related to the increasing expression of IL-10 by CD19+CD5+B cells.

Influence of valsartan combined carvedilol on heart function and myocardial remodeling in patients with heart failure with preserved ejection fraction / 心血管康复医学杂志

Objective: To study therapeutic effect of valsartan combined carvedilol on patients with heart failure with preserved ejection fraction (HFPEF) and its influence on heart function and myocardial remodeling. Methods: A total of 92 aged HFPEF patients treated in our hospital were selected. They were randomly and equally divided into routine treatment group and combined treatment group (received valsartan combined carvedilol based on routine treatment), and both groups were treated for six months. Therapeutic effect, heart function, myocardial remodeling indexes and adverse reactions were compared between two groups after six months. Results: Total effective rate of combined treatment group was significantly higher than that of routine treatment group (93. 48％ vs. 78. 26％, P=0. 036). Compared with routine treatment group after treatment, there were significant reductions in blood pressure [(120. 26±9. 17) / (73. 56±5. 86) mmHg vs. (115. 68±10. 31) / (67. 24±4. 92) mmHg], heart rate [(74. 35±8. 53) beats/min vs. (68. 48±7. 17) beats/min]and BNP level [(299. 86±19. 43) pg/ml vs. (231. 71± 20. 15) pg/ml], significant rise in E/A [(1. 02±0. 09) vs. (1. 26±0. 07)] and LVEF [(53. 14±1. 60) ％ vs. (57. 02±1. 51) ％]; and significant reductions in IVRT [(119. 45±14. 23) ms vs. (102. 17±11. 53) ms], LAVI [(35. 82±7. 15) ml/m2 vs. (30. 17±6. 48) ml/m2], LVEDd [(57. 22±7. 24) mm vs. (50. 61±6. 35) mm]and LVESd [(50. 14±5. 06) mm vs. (44. 93±5. 82) mm]in combined treatment group, P＜0. 05 or＜0. 01. During treatment, no obvious adverse reactions occurred in two groups. Conclusion: Valsartan combined carvedilol can significantly increase effective rate, improve heart function and myocardial construction in HFPEF patients. Which is worth extending.

Study on fingerprint of shengxuening tablets / 中国中药杂志

To establish a method for studying fingerprint of Shengxuening tablets. With chlorin e6 as the reference substance, SHISEIDO Capcell-pak C18 (4.6 mm x 250 mm, 5 microm) analytical column was adopted and eluted with 0.2% formic acid ( containing 20 mmol x L(-1) TBAB) (A) and acetonitrile-methanol-acetone (50: 50: 5) (B). The detection wavelength was set 392 nm. The volume flow rate was 1.0 mL x min(-1). The temperature of column was 45 degrees C. Totally 10 common peaks were indicated on the HPLC fingerprint, with RSDs for variable retention values in common peaks below 0.50%. UPLC/DAD/Q-TOF-MS xevo G2 Q-TOF LC/MS was adopted to preliminarily indentify six chromatographic peaks. The main ingredient in Shengxuening tablets was ferrous derivative, which was mainly composed of Fe chlorin p6, Fe chlorin e6 and Fe isochlorin e4.

Effect of chronic intermittent hypoxia on the expression of Nip3, cell apoptosis, beta-amyloid protein deposit in mice brain cortex / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Chronic intermittent hypoxia (CIH) is the most important pathophysiologic feature of sleep apnea syndrome (SAS). To explore the relationship between SAS and dementia, the effects of CIH on the expression of Nip3, neuron apoptosis and beta-amyloid protein deposit in the brain cortex of the frontal lobe of mice were evaluated in this study.</p><p><b>METHODS</b>Thirty male ICR mice were divided into four groups: control group (A, n = 10, sham hypoxia/reoxygenation), 2 weeks CIH group (B, n = 5), 4 weeks CIH group (C, n = 5), and 8 weeks CIH group (D, n = 10). The ICR mice were placed in a chamber and exposed to intermittent hypoxia (oxygen concentration changed periodically from (21.72 +/- 0.55)% to (6.84 +/- 0.47)% every two minutes, eight hours per day). Neuron apoptosis of the cortex of the frontal lobe was detected by means of terminal deoxy-nucleotidyl transferase-mediated in situ end labeling (TUNEL). Immunohistochemical staining was performed for measuring expression of Nip3 and beta-amyloid protein. The ultrastructure of neurons was observed under a transmission electron microscope.</p><p><b>RESULTS</b>TUNEL positive neurons in each square millimeter in the cortex of the frontal lobe were categorized by median or Ri into group A (1, 5.5), group B (133, 13), group C (252, 21), and group D (318, 24). There were significant differences among the above four groups (P = 0.000). The significance test was performed between the control group and each CIH group respectively: group A and B (P > 0.05); group A and C (P < 0.01); and group A and D (P < 0.005). The number of apoptotic neurons kept increasing in the ICR mice under CIH condition, and reached the peak in the group D, but there was no significant difference between groups B and C, between groups B and D, and between groups C and D. Nip3 positive neurons in each square millimeter in the cortex of the frontal lobe in each group were calculated by median or Ri as follows: group A (2, 5.5), group B (117, 13), group C (227, 26.2), and group D (479, 21.4). There were significant differences among the four groups (P = 0.000). The statistical test was performed between the control group and each CIH group respectively: groups A and B (P > 0.05); groups A and C (P < 0.005); and groups A and D (P < 0.005). There was no significant difference between groups B and C, groups B and D, and groups C and D. The expression of Nip3 was closely correlated with neuron apoptosis in the brain (P < 0.05). The expression of beta-amyloid protein in the brain of mice was negative in all CIH groups and the control group. Ultrastructure observation showed karyopyknosis of nucleus, swelling of chondriosomes, deposit of lipofuscins and degeneration of neural sheath in all CIH groups but not in the control group.</p><p><b>CONCLUSION</b>The results of this study indicate that CIH could up-regulate the expression of Nip3, and result in neuron apoptosis and ultrastructural changes in neurons of the frontal cortex.</p>

Effect of Bufei Qingyu Granule in mollifying skin of mouse scleroderma model / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To investigate the effect and mechanism of Bufei Qingyu Granule (BQG) in mollifying the skin of scleroderma model mice.</p><p><b>METHODS</b>Scleroderma model induced with bleomycin in BALB/C mice 8-weeks old were administered with different dose of BQG for 26 days. The pathological changes of the mice skin were observed.</p><p><b>RESULTS</b>Treatment with low, medium and high dose of BQG showed a tendency to ameliorate the thickened dermis in scleroderma mice but without statistical significance. Medium and high dose of BQG reduced the perivasculitis of dermis and alleviated the reduction or deletion of accessory structure, such as hair follicle and sweat gland. And the spleen index was lower markedly in mice treated with BQG of any dose than that in the untreated model mice (P < 0.05).</p><p><b>CONCLUSION</b>BQG could ameliorate the sclerosed skin in model mice and prevent the occurrence of splenomegaly.</p>