OBJECTIVE:To investigate the clinical efficacy of azithromycin in the treatment of mycoplasma pneumonia in children.METHODS:240 cases of mycoplasma pneumonia in children in our hospital recent years were analyzed.In control group,120 children were treated with erythromycin;in treatment group,120 children were treated with azithromycin.RESULTS:In control group,total effective rate was 81.67%;in treatment group,total effective rate was 95.00% (?2=5.18,P

Objective To investigate the therapeutic effects of varied operative for the treatment of intrahepatic bile duct stones.Methods The clinical data of 176 consecutive cases of hepatolithiasis surgically treated in the past 3 years in our hospital were retrospectively analyzed.There were 45 type Ⅰ patients,25 type Ⅱ a patients,25 type Ⅱ b patients,3 type Ⅱ c patients,52 type Ea patients,19 type Eb patients,and 7 type Ec patients.These 176 patients were divided into 4 groups according to modus operandi:choledocholithotomy and T-tube drainage in 71 patients (type Ea 31 patients,type Ⅰ 15 patients,type Ⅱ a 25 patients) ; choledocholithotomy and choledochojejunostomy in 25 patients (type Ea 14 patients,type Eb 7 patients,type Ec 4 patients) ; choledocholithotomy and hepaticojejunostomy in 10 patients (type Ⅱb 5 patients,type Ⅱ c 3 patients,type Ea 2 patients) ; hepatectomy plus T-tube drainage or choledochojejunostomy in 70 patients (type Ⅰ 30 patients,type Ⅱ b 20 patients,type Ea 5 patients,type Eb 12 patients,type Ec 3 patients).The postoperative residual stone rate,perioperative complications and long term results were compared between groups.Results Patients undergoing hepatectomy have less postoperative residual stone rate,higher rate of good long term efficacy as compared with those who did not undergo hepatectomy (17.1％ (12/70) vs 43.4％ (46/106),91.4％ (53/58) vs 77.0％ (67/87)).Though patients undergoing hepatectomy had higher rate of perioperative complications (37.1％ (26/70) vs 14.2％ (15/106)).Conclusions Hepatectomy is the most effective procedure for the treatment of type Ⅰ and type Ⅱ b hepatolithiasis.Hepaticojejunostomy is the main procedure for the treatment of type Ⅱ c hepatolithiasis.

AIM:To investigate the effects and mechanisms of microRNA-25 (miRNA-25) on the proliferation of human esophageal squamous-cell carcinoma cell line TE1.METHODS: The abundance of miRNA-25 in different tis-sues was measured by RT-PCR.After silencing or over-expression of miRNA-25 with mimics or inhibitor in TE1 cells, the cell proliferation, cell cycle distribution and the expression of cyclin E1 and cyclin-dependent kinase 2 (CDK2) at mRNA and protein levels were measured by CCK-8 assay, BrdU detection, flow cytometry, RT-PCR and Western blot, respective-ly.RESULTS:miRNA-25 was prominent in esophageal mucosal tissue and highly expressed in TE1 cells (P<0.05).O-ver-expression of miRNA-25 increased TE1 cell proliferation, promoted the cell cycle progression and enhanced the en-trance of the cells into S phase (P<0.05).Inverse results were obtained after down-regulation of miRNA-25 (P<0.05). Furthermore, the expression of cyclin E1 and CDK2 at mRNA and protein levels was significantly increased after over-ex-pression of miRNA-25, but decreased after down-regulation of miRNA-25 (P<0.05).CONCLUSION: miRNA-25 en-hances cell cycle transition by increasing the expression of cyclin E1 and CDK2, thus accelerating TE1 cell proliferation. This study provides a novel mechanism by which miRNA-25 increases the proliferation of human esophageal squamous-cell carcinoma cell line TE1, suggesting that down-regulation of miRNA-25 may be a potential new therapeutic strategy for trea-ting esophageal squamous-cell carcinoma.

Finite element analysis (FEA) is broadly used in biomechanics.Being widely used in clinical studies on cervical spine injury,cervical degeneration and stimulating a variety of cervical spine surgeries,cervical finite element model is becoming more and more accurate in recent years.This paper aims to review the development of cervical finite element model,to introduce the application progress of the modeling and analysis in cervical spine injury,cervical disc arthroplasty,cervical interbody fusion,cervical degeneration and cervical instability,and to prospect the foreground of cervical finite element model in future.

Objective: To explore the mechanism of ShenQi compound recipe on preserving vessel endothelium with type 2 diabetes mellitus(T2DM) macroangiopathy in GK rats.Methods: GK rats were randomly divided into Ramipril group,ShenQi compound recipe low dosage group,ShenQi compound recipe high dosage group and Wistar control group.Each group was administrated correspondent substance respectively for 28 days after intra-peritoneal injection of L-NAME and administration of high fat diet for 2 weeks except Wistar control group.To determine ICAM1 by ELISA,ET-1 by radioimmunassay,NOS by chemical shade selection,NO by nitrate reductase method,mRNA expression of ICAM-1 in aorta by real time RT-PCR. Results: Compared with model group,the contents of NO,NOS increased,the ET1 and the expression of thoracic aorta ICAM-1mRNA decreased remarkably in ShenQi compound recipe group(P

Objective:To study the expression of Ki67 and P53 proteins in gingival tissue after wearing four kinds of temporary crowns.Methods:The experiment animal model was established by temporary prosthesis on dogs' teeth using chemical-curing resin,thermal-curing resin,DMG-TEMP crown material and SWIFT composite resin respectively.The immunohistochemistry Envision method was used to measure the expression of Ki67 and P53 proteins in gingival tissue before tooth preparation,after tooth preparation,1-and 2-week,1 month after wearing the crowns.The teeth without any treatment were surved as control.HE stained gingival tissue slices were observed under microscope.Results:The expression of Ki67 and P53 proteins in gingival tissue increased 1 week after wearing the chemical-curing resin crowns or thermal-curing resin crowns(P0.05).No pathological change was observed in all the samples.Conclusion:Chemical-curing resin crowns and thermal-curing resin crowns may increase the expression of Ki67 and P53 proteins in gingival tissue,but DMG-TEMP crowns and SWIFT resin crowns do not.None of the four kinds of temporary crowns may cause abnormal proliferation of gingival epithelia.

Objective To analyze the relationship between pillow height and cervical intervertebral disc stress in lateral decubitus position of the human body using three-dimensional finite element method,and to provide the basis for appropriate pillow selection.Methods A cervical spine CT scan was performed on a normal male volunteer.The medical 3D image reconstruction software (Mimics),reverse engineering software (Geomagic Studio) and finite element software (MSC.Patran) were collectively used to establish three-dimensional finite element models of the whole cervical spine under three lateral decubitus conditions,includes pillow height of 10 cm (cervical spine leftward flexion),17 cm (cervical spine neutral),and 25 cm (cervical spine rightward flexion).Moreover,the finite element analysis and calculation of the three models were conducted.Results The Von-Mises stress,maximal principal stress and maximum shear stress of the model in cervical spine neutral (pillow height=17 cm) were all significantly lower than those of the cervical spine lateral model.Conclusions When the cervical coronal plane is in neutral position,the cervical discs can achieve the best stress distribution state.In lateral decubitus position of the human body,a appropriate pillow height should make the cervical vertebrae in neutral position.

Defensin is a kind of antimicrobiol and cytotoxic peptides which have been found in a large range of living organisms. The mammal defensins have the most wide range antimicrobiol spectrum. The distribution, structure, gene expression regulation of mammal defensins in China and abroad were summarized. Its application on medicine and plant resistant gene engineering were prospected.

Objective To study the T/P rate and smoothness index of Candesartan Cliexetil on slight and middle essential hypertension. Methods 50 patients with slight and middle essential hypertension were treated by Candesartan Cliexetil 8mg taken orally everyday,the course of treatment was 4 weeks. 24h ambulatory blood pressure monitoring(ABPM) was given before and after treatment, the T/P rate and smoothness index were calculated. Results Four weeks after treatment, 24h SBP(148.2±10.7) mm Hg and 24 h D BP (97.6±6.5) mm Hg, dSBP(152.5±9.8) mm Hg and dDBP(96.0±5.3) mm Hg, nSBP(138.3±7.6) mm Hg and nDBP(89.2±8.3) mm Hg, SBP load (87.5±12.2) % and DBP load (36.48±26.4) % with pre-treatment (130.2±7.2) mm Hg, (79.5±7.8) mm Hg, (133.4±7.2)mm Hg, (81.8±6.6)mm Hg,(121.9±7.3) mm Hg, (72.1±7.4) mm Hg, (84.7±9.9)%,(26.7 ±8.3) % have significant difference(P < 0.01). T/P rates were SBP 70% and DBP 63%. Smoothness indexes were SBP(1.21±0.82) and DBP(1.13±0.51). Conclusion Candesartan cilexetil in the treatment of essential hyper-tension is safe and effective,can get a good T/P ratio and smoothness index.

Objective To explore the role and significance of standardized scheme for diagnosis and treatment of pulmonary thromboembolism(PTE).Methods The clinical data of 163 consecutive PTE patients who were treated in our hospital from Jan.1972 to Dec.2006 were retrospectively reviewed.The patients were divided into group A and group B based on the time of application of standardized treatment and diagnosis for PTE.The clinical data of the two groups were analyzed and compared.Results The main risk factors included deep vein thrombus,operation,injury,fracture and tumors,etc.Dyspnea was the most important clinical symptoms.The incidences of dyspnea in group A and B were 92.5% and 84.6%,respectively.The diagnostic case and the ratio of final diagnosis in group B was increased compared to those in group A on an annual basis.The median time for diagnosis was shortened(P