Objective To evaluate the efficacy and safety of Dextromethorphan Hydrochloride, Chlorphenamine Malente, and Ammonium Chloride Syrup on eliminating or relieving the symptoms of acute upper respiratory infections in children, by comparing with Guaifenesin, Dextromethorphan Hydrobromide, Methylephedrine Hydrochloride, and Chlorphenamine Maleate Syrup. Methods Random, blind and parallel control method was adopted. A total of 253 pediatric patients were recruited in 11 clinical research centers; 127 patients were assigned in experimental group and finally 118 patients were included in the program set analysis (PPS); 126 patients were assigned into control group and finally 116 patients were included in PPS. The experimental group took Dextromethorphan Hydrochloride, Chlorphenamine Malente, and Ammonium Chloride Syrup and control group took Guaifenesin, Dextromethorphan Hydrobromide, Methylephedrine Hydrochloride, and Chlorphenamine Maleate Syrup. All of the patients took as prescribed at least for 3 days but not more than 7 days. Results There was no significant differences in age, sex, and acute upper respiratory tract infection scores between the two groups (P?>?0.05). PPS showed the median time of symptom relief of acute upper respiratory tract infection in experimental group was 51.0 h (95%CI: 43.0-62.0 h) and 56.0 h (95%CI: 48.0-64.0 h) in control group. There was no difference between two groups (P?>?0.05). After calibration of center and baseline effects, the experimental group was not worse than the control group. There was no difference in the score of acute upper respiratory tract infection between two groups (F=0.14, P=0.710). The individual symptoms disappear rate of acute upper respiratory tract infection and the compliance between two groups were similar (P all?>?0.05). Both groups had 7 cases of adverse events, and one case of adverse drug reactions each. Thus, the adverse reaction rates in two groups were 0.8% each. Conclusions Dextromethorphan Hydrochloride, Chlorphenamine Malente, and Ammonium Chloride Syrup can effectively relieve symptoms rapidly in the treatment of children with acute upper respiratory tract infection, and its efficacy and safety were non worse than traditional Guaifenesin, Dextromethorphan Hydrobromide, Methylephedrine Hydrochloride, and Chlorphenamine Maleate Syrup.

Animal models are of great value in the study of allergic bronchial asthma.There are a varie-ty of methods to build asthma models,and model evaluation lacks standardized criteria.By retrieval analyzing the recent articles about asthma animal experiments at home and abroad,we conduct a comprehensive assessment on the experimental animal selection,model preparation,especially establishment and evaluation of ovalbumin-in-duced models,to help on the application and optimization about asthma models.

Asthma ; Child ; Humans

ObjectiveTo investigate the effect of montelukast on the secretion of mucus protein in lipopolysaccharide (LPS) induced human bronchial epithelial cells.MethodsPrimary human bronchial epithelial cells were isolated and identiifed in vitro. LPS (1μg/mL) was used to induce cell inlfammatory response. Montelukast (50 μmol/L, 20μmol/L, 10μmol/L) was used as intervention. The concertration of mucin-5 subtype AC (MUC5AC) in cell supernatants was measured by ELISA. The expression levels of MUC5AC mRNA and protein were determined by RT-PCR and Western-blot. DCFH-DA lfuorescent probe was used to detect reactive oxygen species (ROS). To further elucidate the mechanism, NF-κB (p65)、IκBα、ERK1/2 phosphorylation be-fore and after montelukast intervention were determined by Western-blot.ResultsMontelukast decreases the expression levels of MUC5AC mRNA and protein in a dose-dependent manner in LPS induced human bronchial epithelial cells. Meanwhile, mon-teluskast suppresses ROS generation and NF-κB (p65)、IκBα、ERK1/2 phosphorylation.Conclusions In response to LPS in-duced inlfammation, montelukast decreases the expression level of MUC5AC in vitro, which may be related to NF-κB and ERK activation.

Objective: To explore the molecular mechanism of HMC-1 cell apoptosis on exposure to tripterine. Methods: After the HMC-1 cells were incubated with tripterine, the expression of bcl-2, bax, bcl-X,c-myc and ICE were assayed by using immunohistochemical staining and RT-PCR. Results: The expression of bax,c-myc were up-regulated and bcl-2 down-regulated at protein level.The expression of bax,bcl-X L, especially bcl-2 were down-regulated, and ICE was up-regulated at mRNA level. Conclusion: These results suggest that apoptosis of HMC-1 cells induced by tripterine is regulated by different expression of apoptosis-related genes.

Objective To investigate the association of single nucleotide polymorphisms(SNPs)in regulated upon activation normal T cell expressed and secreted (RANTES) gene C-28G(RANTES C-28G),RANTES A-403G and Eotaxin-3 gene C +77T(Eotaxin-3 C+77T) with asthma in Han ethnic children. Methods The buccal mucosa swabs of 192 Han ethnic children with asthma (asthma group) were collected,and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was employed to detect the SNP loci of RANTES A-403G,C-28G and Eotaxin-3 C+77T.Besides,another 192 healthy subjects (aged 18 to 22 years) without sibship with those in asthma group were served as controls.Genotype and genotypic distribution between these two groups were analysed. Results There was no significant differences in genotype and genotypic distribution of SNP loci of RANTES A-403G and RANTES C-28G between asthma group and control group (P>0.05),while there were significant differences in genotypic distribution of Eotaxin-3 C+77T between these two groups.The frequency of Eotaxin-3 C+77T T/T genotype in asthma group was significantly higher than that in control group (32.3% vs 12.5%,OR=3.44,P=0.000). Conclusion Eotaxin-3 C+77T may be the asthma susceptible SNP loci for Han ethnic children,and Eotaxin-3 C+77T T/T is significantly related with the development of childhood asthma

10.3969/j.issn.1000-3606.2013.06.014

ObjectiveTo understand the relationship between mycoplasm load in bronchoalveolar lavage lfuid (BALF) with the status of Th1/Th2 immune response in children withMycoplasma pneumoniae pneumonia (MPP).MethodsThe levels of IL-4, IFN, IL-8 , TNF-α in BLAF and total IgE, ECP in serum from 90 children with MPP were measured by ELISA.MP DNA in BALF was detected quantitatively by lfuorescent real-time PCR. Children with MPP (n=90) were divided into two groups of low MP-DNA load (n=24) and high MP-DNA load (n=26) according to the copies of MP DNA in BALF. The cytokines in BALF, and total IgE and ECP in serum were compared between the two groups. The relationship between the levels of cytokines in BLAF and the copies was evaluated.ResultsThe levels of IL-4 and the IL-4/IFN ratio in BALF from the high DNA-load group were signiifcantly higher than that of the low group (t=4.280, 2.076, allP<0.05). The level of IL-4 was signiifcantly correlated with the copies of MP-DNA in BALF from children with MPP (r=0.509,P<0.05). The percentage of total IgE and ECP positive result in serum from the high DNA-load group is higher than that of the low group. (χ2=24.638, 6.392,allP<0.05).Conclusion Infection with high-load MP in children may cause the imbalance of Th1/Th2. And the Th2 cytokines response seems predomi-nant.

Objective To observe the efficacy and safety of different initial doses of nebulized budesonide inhalation (BI) in infants and young children with moderate to severe asthma exacerbations.Methods A multi-center,parallel controlled clinical trial was performed during Sep 2008 to Apr 2010 in three hospitals,which were Department of Pediatrics,Shanghai Jiaotong University Affiliated Shanghai First People's Hospital,Department of Pediatrics,Shanghai Jiaotong University School of Medicine Affiliated Xinhua Hospital,and Department of Respiratory,Fudan University Affiliated Children's Hospital.One hundred and fifty children aged 6 to 36 month with moderate to severe asthma exacerbations were randomly divided into two groups.The high-starting-dose group was treated with a dose of 1 mg nebulized BI every 8 h for 2 days,while the conventional-starting-dose group was treated with a dose of 0.5 mg cvcry 8 h for 4 days.The terbutaline sulfate aerosol liquid was administered with a dose of 2.5 mg each time as needed.The primary outcome measures were severity scores,which were assessed at admission (0 h),and 8 h,16 h,24 h,48 h,72 h after treatment separately.The secondary outcome measures included the use of β2 receptor agonist,the systemic use of corticosteroids,average length of hospital stay and total cost.The data was analyzed with SPSS 13.0.Results (1) The clinical severity scores were significantly decreased at all time points after treatment in both groups (P ＜ 0.05).Compared with conventional starting-dose of BI,high starting-dose of 3.25 ± 1.82,P ＜ 0.01).(2) The terbutaline doses and the systemic corticosteroids do-ses were significantly reduced in high-starting-dose group compared with conventional-starting-dose group [(16.27 ± 12.99) mg vs (22.90 ± 18.27) mg,P ＜ 0.05 ; (4.54 ± 18.18) mg vs (11.16 ± 21.34) mg,P ＜ 0.05).The average length of hospital stay and the total cost of the two groups showed no significant differences (P ＞ 0.05).(3) There were no side effects associated with BI.Conclusion Compared with conventional treatment,high-starting-dose of BI can control symptoms fast and reduce the use of systemic corticosteroid without any side effects.BI improved symptoms more quickly at 8 h (2.87 ± 1.60 vs 4.48 ± 2.24,P ＜ 0.01) and 16 h (2.48 ± 1.56 vs

Bronchial asthma(asthma for short)is a complex heterogeneous disease,which is caused by multi-ple gene-environmental interaction. With the progress of asthma gene research,some new childhood asthma suscepti-bility genes have been found,and the influence of genes interaction with environment on asthma is being widely atten-ded;different genetic loci combination can predict the onset of childhood asthma. Now,the history of asthma gene re-search and some newly discovered childhood asthma susceptibility genes in recent years and different genetic loci com-bination prediction effect and so on were introduced.