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.

10.3969/j.issn.1000-3606.2013.06.014

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

Objective:To explore the relations of adolescents'behavioral problems to genetic and environmental factors.Methods:66 twin pairs aged 12 to 18 years in Chongqing were included in the study.The Youth Self-Report (YSR) was used to evaluate behavioral problems.The blood sample was collected to identify zygosity of twins.Genetic effects were evaluated by comparing the phenotypic correlationamong monozygotic twins(rMZ) and the phenotypic correlation among dizygotic twins(rDZ).Structural equation modeling (SEM) was performed to evaluate the relations of adolescents behavioral problems to the additive genetic factors (A),shared environment factors (C) and individual specific environmental factors (E).Results:MZ correlations of Social problems and Delinquency were less than DZ correlations(rMZ ＜ rDZ).It prompted that data was not suitable for genetic analysis.MZ correlations(rMZ) of any others (including social withdrawal,somatic complaints,anxiety/depression,thinking problem,attention problems,self-destructive/identity problem)were less than 2DZ correlations (2rDZ).It prompted to fit the ACE model.The optimal model was AE model.Among the contribution of the additive genetic factors (A) and individual specific environmental factors (E)to the total variance,the genetic factors ranged from 0.52 to 0.57 and individual specific environmental factors ranged from 0.43 to 0.48 in anxiety/depression and self-destructive/identity problem.For social withdrawal,somatic complaints,thinking problem and attention problems,the genetic factors ranged from 0.17 to 0.45and individual specific environmental factors ranged from 0.55 to 0.83.Conclusion:There is no obvious relationship between genetic effects and adolescent social problems or delinquency.Other behaviors problems (social withdrawal,somatic complaints,anxiety/depression,thinking problem,attention problem,self-destructive/identity problem)are correlated with additive genetic factors and individual specific environmental factors.Additive genetic factors have high-correlation with anxiety/depression and self-destructive/identity problem,and individual specific environmental factors have high-correlation with other factors.

Objective To explore the effect of postoperative progressive resistance training (PRT) on the upper limb function in breast cancer patients. Methods 66 breast cancer patients were randomly divided into intervention group (n=33) and control group (n=33). The intervention group accepted a 12-week PRT and the control group accepted the routine training since 4-6 weeks postoperative as they admitted to hospital for their first chemotherapy. All the patients received a same content of health education. Results The grip strength, range of motion of abduction and flexion of shoulder were more in the intervention group than in the control group after intervention (P<0.01). Conclusion PRT can effectively improve the function of upper limbs in breast cancer patients.

Objective To explore the influence of genetic and environmental factors on adolescents depressive symptoms. Methods The depressive mood were investigated in 107 twin pairs from Chongqing (aged from 11 to 18 years old) using Beck Depression Inventory (BDI). The Parenting Styles and Dimensions Questionaire (PSDQ), Family Stresses Questionnaire (FSQ), Family Adaptability and Cohesion Scale 2nd Edition Chinese Version (FACES II-CV) and Stressful Life Event (SLE) were applied to assess their environment factors. The blood samples were collected to identify zygosity of twins. Structural equation model was performed to evaluate the effects of the additive genetic factors (A), shared envi?ronment factors (C) and individual specific environmental factors (E) on the adolescents depressive mood. Results The scores of depressive mood were negatively correlated with father’s education level (r=-0.15, P=0.03), mother’s educa?tion level (r=-0.17, P=0.01), scores of the authoritative-parenting-style (r=-0.18, P<0.01), scores of the family adaptabil? ity (r=-0.27, P<0.01) and family cohesion (r=-0.20, P<0.01). There were significantly positively correlation between de?pressive mood and family stresses scores (r=0.14, P=0.04). The scores of adolescents depressive mood were not signifi?cantly correlated with stress life events (P>0.05). The effects of A and E on adolescents depressive symptoms were 0.37 (95%CI:0.14~0.57) and 0.63 (95%CI:0.43~0.86), respectively. Conclusion The authoritative-parenting-style and fami?ly adaptability are negatively correlated with depressive mood. Family stresses are positively correlated with depressive mood. Adolescents depressive mood is influenced by genetic factors and, to a greater extent, specific environmental factors.

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 explore the effects of oscillating blood glucose on apoptosis in renal tubular epithelial cells of diabetic rats and the role of oxidative stress.Methods Renal tubular epithelial cells (HK-2) were cultured in vitro with stable high glucose or oscillating high glucose,and MTF assay was applied to the neasurement of cell proliferation.Streptozotocin induced diabetic model was established with SD rats and the oscillating high blood glucose animal model was induced by intraperitoneal injection of insulin and glucose at different time points every.day.12 weeks later 24 h urine protein (24hUP),blood urea nitrogen (BUN),serum creatinine (Scr),superoxide dismutase (SOD), and malondialdehyde (MDA)were determined. Apoptosis was assessed by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL),and immunohisto-chemistry was used to detect apoptosis associated gene Bax,Bcl-2,and NOX-4 expression in kidney.Changes in ultrastructure were observed.Results Oscillating high glucose may inhibit renal cells proliferation obviously when comparing with stable high glucose.In the rats with oscillating blood glucose rather than those with stable high blood glucose,there was a significant increase of BUN,Scr,24hUP,and MDA and a decrease of SOD[ (21.50 ± 1.72 vs 12.50 ± 1.85 )mmol/L,(97.51 ± 7.84 vs 82.12 ± 11.48 ) μmol/L,( 1.57 ± 0.09 vs 1.04 ± 0.12 ) mg/24 h,( 23.50 ± 1.87 vs 14.82 ± 2.96) nmol/ml,( 17.22 ± 1.12 vs 21.11 ± 1.80) U/ml,all P＜0.05 ] ; cell apoptosis was intensified with the up-regulation of Bax and NOX-4 protein expression and down-regulation of Bcl-2 in glomerular endothelial cells; and more severe pathological damages were observed.ConclusionComparing with stable high blood glucose,oscillating high blood glucose induces more apoptosis and less proliferation of renal tubular epithelial cells and the mechanism may be related to the increased oxidative stress.

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