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Objective: To determine the antibody titer in the serum of allergic rabbits after the injection of 1, 3-di-caffeoylquinic acid contained in Shuanghuanglian injection.Methods: The complete antigen was prepared by incubating the suspected small molecular hapten 1, 3-di-caffeoylquinic acid contained in Shuanghuanglian injection with the serum from the normal rabbits.The specific antibody was obtained in the immunized rabbits.The antibody titers of antiserum were measured by ELISA kits.Indirect competitive ELISA was used to determine serological specificity, and the obtained data was used to plot the inhibition curves.The content of IgE antibody in the antiserum of rabbits was detected by rabbit immunoglobulin E (IgE) ELISA kits.Results: The antibody titer (A) of 1,3-di-caffeoylquinic acid was 2 times higher than that of the negative control, which indicated its potential allergenicity.The regression equation was I=0.170 6 lg C + 0.317 5 , which was with the correlation coefficient of r=0.985 4 , the detection limit of IC 10 =57.40 μg·ml-1 and the half inhibitory concentration of IC 50 =8.732 0 mg·ml-1.Furthermore, the exogenous IgE antibody was produced in the rabbits.Conclusion: The results indicated that the hapten substance 1,3-di-caffeoylquinic acid in Shuanghuanglian injection was allergenic under the present experimental conditions.
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OBJECTIVE:To evaluate therapeutic efficacy of tolvaptan combined with levosimendan in the treatment of severe congestive heart failure(CHF). METHODS:100 severe CHF patients were randomly divided into basic treatment group,tolvaptan group,levosimendan group and drug combination group,with 25 cases in each group. All groups were given Digitalis,ACEI,spi-rolactone,furosemidum and other comprehensive treatment;tolvaptan group was additionally given tolvaptan(15 mg/time,qd);le-vosimendan group given levosimendan [0.1 μg/(kg·min)] for consecutive 24 h;drug combination given tolvaptan (15 mg/time, qd)and levosimendan [0.1 μg/(kg·min)] for consecutive 24 h. Blood pressure,heart rate,dyspnea,the improvement of systemic clinical symptoms and 24 h urine volume were observed in 4 groups before and 7 d after treatment. The venous blood samples were collected to determine the change of Na+,K+,renal function,BNP and other related indicators;the changes of LVEDd,LVESd, LVEF,CI and other indicators were determined by UCG. RESULTS:7 days after administration,compared with basic treatment group,the blood pressure,heart rate,BNP,LVEDd and LVESd of tolvaptan group,levosimendan group and drug combination group decreased significantly,while dyspnea,systemic clinical symptoms and LVEF were improved significantly,and 24 h urine volume and CI increased significantly,with statistical significance(P<0.05). The change of drug combination group was more sig-nificant,there was statistical significance,compared with tolvaptan group and levosimendan group(P<0.05). There was no signifi-cant difference in serum electrolytes and renal function. CONCLUSIONS:Tolvaptan combined with levosimendan is effective and better than drug alone in the treatment of severe CHF.
ABSTRACT
Objective To explore the influence of intubation-surfactant-extubation (InSurE)therapy combined with bilevel positive airway pressure (BiPAP)in the use time of mechanical ventilation,and to clarify the value of BiPAP in the treatment of respiratory distress syndrome in the preterm infants.Methods Toral 95 preterm infants with respiratory distress syndrome were treated with InSurE therapy during January 2011 to October 2014. Among them,the preterm infants before January 2013 were selected as control group who were treated with InSurE and nasal continuous positive airway pressure (nCPAP).After January 2013, 60 preterm infants were treated with BiPAP,as BiPAP group.The rates of InSurE failure,the need for mechanical ventilation (MV)on the 7th day after InSurE failure, total non-invasive ventilation time, total mechanical ventilation time, atmospheric oxygen therapy time and incidence of clinical complications were compared between two groups.Results ① There were no significant differences in the clinical data of the preterm infants between two groups, such as gender and age.② Although there was no significant difference in the failure rate of InSurE,but the rate of repeated mechanical ventilation during 1 week in BiPAP group was lower than that in control group (P <0.01).③ The Rank sum test result showed that the total time of non invasive ventilation in BiPAP group was longer than that in control group (P <0.01).The total time of invasive mechanical ventilation and oxygen therapy in BiPAP group was lower than that in control group (P < 0.05).④ The incidence of retinopathy of prematurity (ROP)and bronchopulmonary dysplasia (BPD)in BiPAP group was lower than that in control group.Conclusion BiPAP can significantly reduce the use of invasive mechanical ventilation after the failure of InSurE,thereby decreases the oxygen toxicity and barotrauma hazards.