Safety and effectiveness assessment of 2011-2012 seasonal influenza vaccine produced in China: a randomized trial.

OBJECTIVE: This study evaluated the effectiveness and safety of the egg-based, trivalent, inactivated split influenza vaccine produced by the Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, China. METHODS: From March 2012 through May 2012, we enrolled a total of 1390 healthy volunteers between the ages of 3 and 80 years in a randomized clinical trial at the Hebei Disease Control Center Vaccine Clinical Evaluation Center. For all subjects, body part adverse reactions and whole-body adverse reactions were observed 30 min, 6 h, and 1-7 days' post-inoculation. If no severe adverse effects were observed 7 days' post-vaccination, the local and systemic reactions of preliminary test participants were recorded until day 28. There was no placebo group in this study. Blood samples were taken for serological testing before vaccination and 28 days' post-vaccination. RESULTS: Twenty-eight days after vaccination, the seroconversion rates of experimental and control groups were H1N1 75.3% and 75.7%, H3N2 75.8% and 71.8%, B 70.7% vs. 69.4%, (P > 0.05). The antibody Geometric Mean Titer（GMT）of experimental and control groups were H1N1 (179.7, 182.4), H3N2 (584.0, 445.7), B (201.4,191.6). The protection rate of experimental and control groups was not statistically significant (H1N1: 86% vs. 87%, H3N2: 99% vs. 98%, B: 98% vs. 98%). Also, 95% confidence intervals of the protection rate difference between the experimental and the control group were H1N1: -0.1% (-4.1,3.8) %, H3N2: 0.3% (-1.0,1.7) % and B: 0.2% (-1.5,1.9) %; confidence intervals exceeded the limit of -5%. The rates of adverse reactions between experimental and control groups were 6.3% and 7.7% in local response reactions, and 19.5% and 18.0% in systemic reactions. Three hundred and twenty-seven adverse events (AEs) in 1200 (27.76%) subjects were reported within 28 d after vaccination. No serious adverse events occurred during the study. CONCLUSIONS: The experimental vaccine three-antibody protection rate was non-inferior to the control vaccine. Our results demonstrated that the experimental vaccine achieved the primary immunogenic end point of the intended clinical protocol, as well as a secondary immunogenic end-point, with an acceptable level of safety. IRB approval for this study was issued under #2012Y0005 and registered as Clinical Trial No. NCT01551810.

Exploration of influencing factors of price of herbal based on VAR model / 中国中药杂志

Based on vector auto-regression (VAR) model, this paper takes advantage of Granger causality test, variance decomposition and impulse response analysis techniques to carry out a comprehensive study of the factors influencing the price of Chinese herbal, including herbal cultivation costs, acreage, natural disasters, the residents' needs and inflation. The study found that there is Granger causality relationship between inflation and herbal prices, cultivation costs and herbal prices. And in the total variance analysis of Chinese herbal and medicine price index, the largest contribution to it is from its own fluctuations, followed by the cultivation costs and inflation.

Curative effect of integrative medical therapy for systematic lupus erythematosus / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To observe the curative effect of integrative medicine for treatment of systematic lupu erythematosus (SLE).</p><p><b>METHODS</b>Totally 110 cases of SLE were randomized into two groups, 50 in the control group and 60 in the treated group, both were treated with prednisone, but to the treated group, integrative medica treatment was given additionally according to syndrome differentiation. The course for both groups was 6 months. Clinical symptoms, immunological indexes, peripheral blood figure, erythrocyte sedimentation rate (ESR), levels of C-reactive protein (CRP) and creatinine (Cr) in blood, and 24 h urinary total protein (u-TP/24 h) were observed before and after treatment.</p><p><b>RESULTS</b>Of the 60 patients in the treated group, the treatment on 29 was evaluated as clinical remission, 18 as remarkably effective, 9 as effective, and 4 as ineffective, the total effective rate being 93.33% (56/60), while that in the control group was clinical remission in 11, remarkably effective in 10, effective in 19, ineffective in 10 respectively, and the total effective rate 80% (40/50), the difference on total ef fective rate between the two groups was significant (chi2 = 4.36, P <0.05). Besides, the improvement in the treated group was superior to that in the control group in terms of clinical symptoms such as fever, arthralgia and baldness (P <0.05, P <0.01); the negative reversion rate of anti-nuclear antibody (ANA, 51.3% vs 28.1%), antidouble-stranded DNA (ds-DNA, 53.6% vs 26.1%), anti- ribonucleoprotein (RNP, 63.2% vs 29.4%) and circulating immnue complexes (CIC, 63.2% vs 29.4%, all P <0.05); lowering of immunoglobulin (for IgG, P < 0.05; IgA, P <0.01; IgM, P <0.01); as well as bettering in peripheral blood figure, ESR, CRP, Cr and u-TP/24 h (P <0.05 or P <0.01).</p><p><b>CONCLUSION</b>Integrative medical treatment is obviously effective for SLE patients.</p>

Prediction and analysis model of temperature and its application to a natural ventilation multi-span plastic greenhouse equipped with insect-proof screen / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

The natural ventilation widely used in greenhouses has advantages of saving energy and reducing expense. In order to provide information for climate control of greenhouse, a model was developed to predict the variation of air temperature in the naturally ventilated greenhouse equipped with insect-proof screen. Roof ventilation and combined roof and sidewall ventilation were considered in the model. This model was validated against the results of experiments conducted in the greenhouse when the wind was parallel to the gutters. The model parameters were determined by the least squares method. In the used model, effects of wind speed and window opening height on the air temperature variation were analyzed. Comparison between two types of ventilation showed that there existed a necessary ventilation rate which results in air temperature decrease in natural ventilation under special climatic conditions. In our experiments when wind speed was less than 3.2 ms(-1), wind had a more gradual effect on greenhouse temperature for roof ventilation, compared with combined roof and sidewall ventilation, which had greater air temperature decrease than roof ventilation only.

Clinical observation on treatment of ankylosing spondylitis with huatan zhuyu jiedu decoction / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To observe the clinical effect of Huatan Zhuyu Jiedu Decoction (HZJD) in treating ankylosing spondylitis (AS).</p><p><b>METHODS</b>One hundred AS patients were randomly divided into two groups, the 60 patients in the treated group were treated with HZJD, the 40 patients in the control group were treated with Duhuo Jisheng Decoction. Treatment for both groups was orally given 1 dose per day in decoction form for 1 month as a treatment course. The efficacy of treatment was evaluated after 1-3 treatment courses.</p><p><b>RESULTS</b>The effect of treatment in the treated group was short-term controlled in 12 patients, markedly effective in 29, improved in 16 and ineffective in 3, the total effective rate was 95% (57 cases), while in the control group, the corresponding figure was 2, 8, 20, 10 and 75% (30 cases), comparison between the two groups showed significant difference (chi 2 = 20.85, P < 0.01). The manifestation of symptoms of patients in both groups improved obviously, the pain in loin and back alleviated, spinal motion (flexion forward, extension backward and lateral inclination) improved and thoracic expansion increased. Laboratory indices such as ESR, C3, IgA and CRP reduced obviously after treatment (P < 0.01 or P < 0.05), and better effect was shown in the treated group (P < 0.05). X-ray film after treatment showed improvement in 11 cases in the treated group and 4 in the control group, inter-group comparison showed significant difference (chi 2 = 7.99, P < 0.01), the effect of HZJD was better than that of the control.</p><p><b>CONCLUSION</b>HZJD has definite therapeutic effect in treating AS.</p>