BACKGROUNO:Some experiments have proved that some traditional Chinese medicines (TCM) have good biocompatibility when they touch and interact with human body tissues, body fluid or blood.Therefore,the physicochemical properties and functions of biomaterials can be improved by compounding it with some TCM.OBJECTIVE:To evaluate the biocompatibility of gelatin-bletilla porous material carrying TCM.DESIGN:Single sample experiment.SETTING:Department of Acupuncture & Moxibustion and Orthopaedics.Hubei College of Traditional Chinese Medicine. MATERIALS:This experiment was carried out in the Department of Orthopaedics,Tongji Medical College,Huazhong University of Science and Technology between February and April 2005.Twelve mice,male and female in half,weighing 18-24 g, and 6 Japanese big-eared rabbits,weighing 2.8 to 3.0 kg,were chosen for this experiment.They were raised at (18±1)℃ in separate cages.METHODS: Spongy gelatin-bletilla porous materials carrying extract of Coptidis and Radix Salviac Militiorrhizae was prepared by freeze-drying method.The acute systemic toxicity test:The 12 mice were divided into experimental group and control group. Mice in the two groups were intraperitoneally injected with leaching liquor and normal saline,respectively (the dose was 50 mL/Kg),then the general state and body mass of mice were recorded at the 4th,24th,48th and 72nd hours after injection, respectively.The porous materials were implanted in dorsal muscle of rabbits.Two rabbits were sacrificed at the 1st, 2nd and 6th weeks after operation seperately,and tissue reaction of biomaterial in vivo was assessed by gross observation and histological examination. MAIN OUTCOME MEASURES: Gross observation and histological examination of tissue reaction of biomaterials in vivo.RESULTS: Twelve mice and six big-eared rabbits were involved in final analysis.The acute systemic toxicity test:Mice of two groups had good status,normal activity and appetite,stable respiration:and no abdominal irritation,exhaustion, cyanosis or death was found.Body mass of mice of two groups presented tendency of increase at the 24th,48th and 72nd hours after injection,and there were no significant differences between two groups (P＞0.05).The implantation test:①Gross observation:The samples were tightly bounded with muscular fibrous tissues at postoperative 1 week.They were connected with muscular fibrous tissues and could not be easily separated at postoperative 4 weeks.Gelatin-bletilla porous materials carrying TCM could hardly been seen at postoperative 8 weeks.②Histological observation:There were a lot of infiammatory cells and mesenchymal stem cells around the samples at 1 week after the implantation of gelatin-bletilla porous materials carrying TCM; Some materials were degraded and infiammatory cell infiltration was reduced around the implanted materials at 4 weeks; The inflammatory cells were further reduced and the materials were absorbed and replaced by muscular tissues at 12 weeks.CONCLUSION:Gelatin-bletilla porous materials carrying TCM is safe and reliable for application in wound healing,skin and muscle tendon tissue engineering.

OBJECTIVE:To observe the efficacy and safety of salbutamol sulfate by atomized inhalation in the treatment of pe-diatric asthmatic disease. METHODS:156 children with asthmatic disease were randomly divided into control group (78 cases) and observation group (78 cases). Control group was given oxygen inhalation, anti-infection, relieving cough and reducing phlegm,aminophylline and other conventional treatment;observation group was additionally given 0.03 ml/kg salbutamol sulfate, adding into 2 ml 0.9% Sodium chloride injection,putting into mask atomizer for nebulization,5-10 min every time,twice a day. They were treated for 5 d. Clinical efficacy,asthma remission time,pulmonary rales disappearing time,average hospitalization days and incidence of adverse reactions in 2 groups were observed. RESULTS:The total effective rate in observation group was sig-nificantly higher than control group,asthma remission time,pulmonary rales disappearing time and average hospitalization days were significantly shorter than control group,the differences were statistically significant(P<0.05). There were obvious adverse re-actions in 2 groups during treatment. CONCLUSIONS:Based on conventional treatment,salbutamol sulfate by atomized inhalation has obvious efficacy in the treatment of pediatric asthmatic disease,with good safety.

OBJECTIVE:To observe clinical efficacy and safety of Carboxymethylstarch sodium solution in auxiliary treatment of pediatric bronchial asthma. METHODS:Totally 102 children with bronchial asthma selected from our hospital during Mar. 2015-Mar. 2016 were divided into observation group and control group according to admission order,with 51 cases in each group. Control group was given aerosol inhalation of Budesonide suspension for inhalation 0.5-1 mg,tid+ aerosol inhalation of Ipratropi-um bromide solution for inhalation 1-2 mL+Ambroxol hydrochloride and clenbuterol hydrochloride oral solution 2.5-15 mL,po, bid. Observation group was additionally given Carboxymethylstarch sodium solution 7 mL(1-<4 years old),10 mL(4-12 years old),po,tid. Both groups received treatment for 3 months. Clinical efficacy,the time of cough and wheezing relief,the time of lung wheezing disappearance,hospitalization time and the levels of immune indexes (IgG,IgM,IgA) were observed in 2 groups, and the occurrence of ADR was recorded. RESULTS:Total response rate of observation group(90.2%)was significantly higher than that of control group(70.6%),and the time of cough and wheezing relief,the time of lung wheezing disappearance and hospitaliza-tion time of observation group were significantly shorter than those of control group,with statistical significance (P<0.05). There was no statistical significance in the levels of IgG,IgM and IgA between 2 groups before treatment(P>0.05). After treatment,above immune indexes of observation group were significantly higher than before treatment and control group,with statistical significance (P<0.05). No obvious ADR was found in 2 groups during treatment. CONCLUSIONS:Carboxymethylstarch sodium solution in aux-iliary treatment of pediatric bronchial asthma shows good therapeutic efficacy and improves immunity of children with good safety.