ObjectiveTo explore the effect of atopic status on interleukin-4 (IL-4),interferon-γ (IFN-γ) and interleukin-5 (IL-5) levels in serum of children wih mycoplasma pneumoniae (MP) infection,and to investigate the relation between these cytokines and disease severity.MethodsNinety-five children with MP infection were enrolled in our study,which were divided into atopic group and non-atopic group,mild group and severe group,normal-TIgE group and high-TlgE group.Meanwhile,38 normal children were enrolled as normal control group.The serum levels of IL-4,IFN-γ and IL-5 were detected by ELISA method.Results(1) Thelevels of serum IL-4 (pg/ml),IFN-γ (pg/ml) and IL-5 (pg/ml) in MP infection group[2.82(2.12,7.13 ),39.70(18.82,181.42),16.12( 10.35,28.07 ) ] were higher than those in normal control group [ 1.17(1.05,1.60),13.25(8.77,22.56),9.72(6.11,12.39) ] ( P＜0.05 ).(2) Serum IL-5 levels in atopic group [ 15.55 (10.35,22.61 ) ],severe group [ 15.98 ( 11.95,26.58 ) ] and high-TlgE group [ 16.55( 10.35,23.65 ) ] were much higher than those in normal control group( P＜0.05 ).Rather than the serum IL-5 levels of atopic group,mild group and normal TIgE group showed no significant difference compared with the normal control group( P＞0.05 ).(3) No significant differences of serum IL-4,IFN-γ,andIL-4/IFN-γ were found between atopic group and non-atopic group,mild group and severe group,normalTIgE group and high-TIgE ( P＞0.05 ).ConclusionIL-4,IFN-γand IL-5 are involved in the pathogenesis of MP infection,furthermore,atopic status of the host may lead to the increase of serum IL-5,which may enhance the progress of the disease.

Mycoplasma pneumoniae(MP) is one of the most important pathogens for respiratory tract infections in older children and adults. And it also has a close relationship with the development, acute exacerbation and persistence of chronic difficult-to-control symptoms of asthma.But so far,the mechanisms inducing or causing asthma remain unclear.Possible mechanisms include direct damage of bronchial mucosa, IgE-mediatad immune response, a variety of cytokines and inflammatory mediators releasing and the propensity of host.

Wheezing is a common problem in early childhood and leads to a diagnostic dilemma.Respiratory endoscopy permits the examination of the morphology and the dynamics of the upper and lower airways.Moreover,it allows additional procedures to be performed.These include bronchoalveolar lavage (BAL) and endobronchial biopsy that help to complete the diagnostic evaluation and complement the findings with information from more peripheral airways.

Flexible bronchoscopy has become an important method in diagnosis of pediatric respiratory diseases.Here,we introduced some diagnostic techniques such as bronchoalveolar lavage,protected specimen brushing and biopsy techniques including endobronchial biopsy,transbronchial lung biopsy,and transbronchial needle aspiration.Meanwhile,its role in the diagnosis of common diseases and symptoms (abnormality of airways,dyspnea,refractory wheezing,chronic cough,tuberculosis and bronchial foreign bodies)was discussed.

Objective To investigate clinical characteristics of children infected with Klebsiella pneumonia (KP) in community and nosocomial ,and analysis briefly about their resistance .Methods 79 cases of children with pneumonia identified as KP infection by the method of sputum bacterial culture were collected and divided into nosocomial infection group (11 cases) and community in-fection group(68 cases) from January 2009 to December 2012 .The clinical information were recorded ,sputum bacterial susceptibili-ty and extended-spectrum β-lactamase enzyme were tested .Results 10 cases and 12 cases of extended-spectrumβ-lactamase enzyme strains were detected from nosocomial infection group and community infection group ,respectively .The children infected KP had a high degree of resistance to cefazolin ,ampicillin/sulbactam ,head penicillin ,ceftriaxone ,aztreonam ,cefepime and ceftazidime ,while sensitive to ciprofloxacin ,cefotetan and piperacillin/tazobactam in the nosocomial infection group .12 cases in community infection group produce highly resistant to penicillin-type drugs ,but were not obvious resistance to other types of antibiotics .Conclusion Multi-drug resistance problems are serious in the pneumonia children who infected KP and the extended-spectrum β-lactamase en-zyme is positive .Infected children should be treated differently in the selection of antibiotics in the treatment of infection in commu-nity and nosocomial .

The function of hepatic stellate cell (HSC)in liver fibrosis has been well recognized.In recent years,the role of HSC in the liver tumor microenvironment have been paid increasing attention.Platelet derived growth factor (PDGF) is the most important mitogen of hepatic stellate cell,and plays an important role in the activation of hepatic stellate cell.Hepatic stellate cell is not only the target cells of PDGF,but also PDGF-secreting cells.Thus a bi-directional cycle mode of PDGF activating hepatic stellate cell has been established.The signaling pathways of HSC activation include MAPK,PI-3K,Ca2+ and JAK pathways.To explore PDGF activating hepatic stellate cell in liver tumor microenvironment and to find the new methods of targeting PDGF and hepatic stellate cell,may help us find a new direction for the treatment of hepatocellular carcinoma.

0.5). However, when the flexible bronchoscope was used, foreign bodies dropped into the esophagus in 5 patients. Conclusion The characteristic manifestations was not frequent in the patients with larynx and trachea foreign bodies.History of aspiration was the most sensitive diagnostic tool. The plain chest radiography and fluoroscopy had low positive finding.Therefore, fiberoptic bronchoscopic examination should be performed timely.However, for extraction of foreign bodies, rigid bronchoscope would be the first choice.

The development of the human facial canal and the facial nerve of 229 temporal sides from 11 weeks fetuses to infancies were studied by histological method. The results showed that the facial canal was formed by the membranous ossification and by cartilaginous ossification. The lateral wall, inferior wall of the horizontal segment and the eminous segment, the superior wall of the labyrinthine segment of the facial canal were formed by the membranous ossification. The sequence of the membranous ossification had some regularities. The rest of the facial canal was ossified in the cartilaginous bone. The development of the facial nerve grew in advanced embrylogical age. The length and width diameters of the facial nerve in the facial canal were almost the largest in size before birth. The size of the facial nerve to that of the facial canal is kept in a more or less constant proportion. It was found that the facial norve was largest at the distal portion of the labyrinthine segment of the facial canal and smallest at the stylomastoid foramen.We put forward the conclusion that the disturbances of the membranous ossification in any portion of the facial canal and the anomalies of the pneumatization of the mastoid process were the main causes for the deficiency of the facial canal.

[Objective]To analyze the relative factors of reoperation to lumbar disc herniation(LDH)and to discuss the three methods for reoperation.[Method]By retrospectively studying and analyzing etiopathogenisis in 102 cases,who were made at least one reoperation,and other(1 327) LDH patients underwent an initial standard discectomy in our department from 1999 to 2004.Then studied several relative factors,such as age,interval time between the initial operation to the first reoperation,was made stastistic analysises.Combined with the statistic results,the clinical outcomes of patients who underwent three different reoperative methods were evaluated.[Result]A total of 102 cases underwent at least one reoperadon,11 of them had multiple(two or more)reoperations.Among these patients 58 cases suffered from recurrent LDH,40 suferred from postoperative stenosis or instability and 4 had postoperative intervertebral-space-infection.Forty-eight cases(47.06%)were performed single discectomies again,20(19.61%)undergone decompressions by laminectomy and 34(33.33%)had decompressions,bone-grafting and fixed with spinal instrumentations.There were 16 patients in all interbody-fusion surgeries and the number increasd year by year.Higher reoperation rate was seen in patients with the initial operation taking place less than 1 year comparing,more than those with the initial operation performing more than 1 year ago(P

[Objective]To approach clinical outcomes and experiences of low-grade spondylolistbesis patients treated with posterior lumbar interbody fusion(PLIF)and transpedicular instrumentation.[Method]Consecutive 53 cases suffered from low-grade spondylolisthesis were analyzed retrospectively.All patients were treated by posterior lumbar ioterbody fusion and transpedicular instrumentation.Pre-operative and post-operative Boxall index,angle of slipping,intervertebral height were oberserved in all patients.Curative effects,fusion fate,operation-methold and complications were analyzed in all patients.[Result]All patients were followed up from 9 to 21 months with an average of 16 months.Forty-nine(92.5%)patients were assessed to bony fusion postoperatively.Comparement about preoperative and postoperative Boxall index,angle of slipping and intervertebral height were observed in all patients.There were great changes in all these indexes(P