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Objective To validate a cell infection-based quantitative RT-PCR for evaluating the potency of rotavirus vaccine. Methods According to the ICH ( the International Council for Harmonization) Harmonised Tripartite Guideline, the method was validated for its specificity, accuracy, precision, linearity and robustness. Results The method had good specificity as it could only amplify and detect the corre-sponding type of rotavirus strain. The recovery rates for determining the potency against rotaviruses of G2, G3 and G4 types were 97％ to 108％. The percent coefficient of variation ( CV) of both intra-plate and in-ter-plate precision was≤2. 62％, while the intraday and interday CV was≤1. 76％ and≤2. 27％, respec-tively. The CV between the two experimenters was≤7. 68％. The linearity range of the method was 4. 4-6. 5 UI for G2 type rotavirus, 3. 9-8. 3 UI for G3 type and 3. 5-8. 1 UI for G4 type. Good robustness was observed using the cells of 140 to 160 generations. Conclusions The cell infection-based quantitative RT-PCR was shown to have satisfactory specificity, accuracy, precision, linearity and robustness, suggesting that it was a suitable method for evaluating the potency of multivalent rotavirus live vaccines.
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Objective To study the influence of penehyclidine hydrochloride(PHC)on inflammatory factors in patients with acute lung injury(ALI).Methods Total of 96 patients with ALI were randomly divided into treatment group(48 cases)and control group(48 cases).Patients in the treatment group were given conventional therapy,plus penehyclidine hydrochloride injection 1 mg,im,q12 h or q8h,the first dose could be doubled,at least 2 days of continuous application;Patients in the control group were received conventional therapy.Tumor necrosis factor α (TNF-α),interleukin-6 (IL-6),high sensitive C reactive protein (hs-CRP),calcitonin (PCT),oxygenation index (PaO2/FiO2),lung injury score (LIS) and acute physiology and chronic health status score (APACHE II) of patients on each time point were compared between the two groups before and after treatment,and mechanical ventilation time,intensive care (ICU) treatment time,acute respiratory distress syndrome (ARDS) and ICU mortality were recorded.Results On each time point of treatment,TNF-α,IL-6,hs-CRP,PCT,LIS,APACHE II in treatment group were significantly lower than that of control group (P<0.05),PaO2/FiO2 was significantly higher than that of control group(P<0.01).The mechanical ventilation time,ICU treatment time in treatment group were shorter than that of control group(all P<0.05),The incidence of ARDS in treatment group and control group was 20.8% and 39.6%,respectively(P<0.05);ICU mortality rate was 12.5% and 31.2%,respectively(P<0.05).Conclusion Penehyclidine hydrochloride can effectively improve the oxygen metabolism in acute lung injury,regulate the pulmonary inflammatory response and improve the prognosis of patients.
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Meridians in human body were classified as white meridian and black meridian according to Tibetan medicine.Season and environment,improper diet,toxic heat and trauma were recognized as main reasons damaging the white meridian in Tibetan Medicine,leading to the emerge of white meridian disease induced by Long (one of the three factors) and blood disorder.White meridian disease in Tibetan medicine involved a series diseases,such as many clinical diseases,due to the damage of white meridian system caused by pathogenic factors.Stroke also belonged to white meridian disease.Drugs and treatments were selected based on the nature of disease such as cold and heat,onset,thelocation of disease and the three factors (Chi Ba,Long and Pei Gen).It was the fundamental principle of the treatment rules of white meridian disease in Tibetan medicine,namely,prescribing medication with the rule of diagnosis and treatment,comprehensive analysis of the causes of diseases and mastering the change law of diseases and syndromes in clinic.
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Objective To observe the influence of ulinastatin (UTI) on curative effect,inflammatory response and cellular immune function in patients with acute respiratory distress syndrome (ARDS).Methods 96 patients with ARDS were randomly divided into two groups:the control group (48 cases) were treated with conventional treatment,and the UTI group (48 cases) were added with UTI injection based on the control group treatment.The changes of oxygenation index,vital signs,inflammatory factors and T lymphocyte subsets of patients in the two groups were compared before treatment and after treatment in 7 days,recorded the duration of mechanical ventilation time,ICU treatment time and mortality rate in ICU in the two groups.Results After treatment in 7 days,the vital signs (RF,HR,MAP),inflammatory factors (TNF-α,IL-6,IL-8,PCT,CRP,WBC),liver function (AST,ALT),renal function (BUN,Cr) and APACHE Ⅱ score,MODS score of UTI patients in the UTI group were lower than those in the control group (P ＜ 0.05 or P ＜ 0.01).Oxygenation index (PaO2/FiO2) and cellular immunity (CD4+,CD4+/CD8+) in the UTI group were higher than those in the control group (P ＜ 0.01).Mechanical ventilation time,ICU treatment time in the UTI group were shorter than those in the control group (all P ＜ 0.05),the mortality rate of ICU in the UTI group was lower than that in the control group (P ＜ 0.05).There was no significant difference in the incidence of adverse reactions between the two groups (P ＞ 0.05).Conclusions UTI can more effectively improve oxygen metabolism,vital signs for ARDS,liver and kidney function,reduce the APACHE Ⅱ score and MODS score,shorten the mechanical ventilation time and ICU treatment time,reduce the mortality rate of ICU.Its mechanism may relate to clearance of inflammatory factors and regulate cellular immune function of UTI.
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Traditional Tibetan medicine nature theory was the core of Tibetan medicine. This study was aimed to understand the scientific values of Tibetan medicine correctly and catch its unique advantages accurately. The history origin, nature and taste, target, effect, the relationship between diseases and Tibetan medicine and other aspects of traditional Tibetan medicine nature theory were discussed in this paper. Several points were put forward, which included the research of Tibetan medicine nature theory was the premise to maintain and develop Tibetan medicine; it was necessary to carry out literature research, definite and improve the nature theory; the data mining technology and systems biology should be applied to the theory research to elucidate the rules and scientific connotation of Tibetan medicine nature; building the model of experimental study with clinical research to determine its clinical values forward during the development of Tibetan medicine nature theory research.
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Objective:To establish the quality standard for Tangzhixiao capsules. Methods: The qualitative identification of Salvia miltiorrhiza,Atractylodes and Hawthorn was detected by TLC, and the quantitative determination of salvianolic acid B was determined by HPLC. The HPLC determination was performed on a YMC-Triart C18 (250 mm × 4. 6 mm, 5μm ) column with the mobile phase consisted of acetonitrile-0. 1% phosphoric acid (24∶ 76) at the flow rate of 1. 0 ml·min-1 , the column temperature was 30℃ and the detection wavelength was set at 286 nm. Results: The TLC spots were fairly clear, and the negative samples showed no interference. The concentration of salvianolic acid B within the range of 0. 012-0. 120 mg·ml -1 was linear with peak area(r = 0. 999 5), the average recovery was 100. 06% and RSD was 0. 83%(n = 6). Conclusion: The method is accurate, reliable and reproducible, which can be used in the quality control of Tangzhixiao capsules.