Objective To explore the changes of serum nitric oxide(NO) and trace element Zinc in children with pneumonia and their clinical significance.Methods The observing group contained 48 patients with pneumonia in our hospital from Oct.2005 to May 2006,who were collected 3 mL of blood sample on empty stomach on the second day.Twenty-six of them had been collected serum during their convalescence stage.The control group contained 20 children,who were healthy in the same stage.The levels of NO of 48 pneumonia,26 convalescence stage(recovery group) and 20 healthy patients were determined by UV-2100 spectrophotometer.The Zinc in serum was determined by P-E503-mode atomic absorption spectrophotometric analysis antigenic in those patients.Blood viscosity was measured and analyzed with the statistic analysis SPSS 10.0 software.Results The levels of NO in pneumonia children[(57.76?19.41) ?mol/L] were significantly higher than that in control group [(25.09?5.51) ?mol/L] and recovery group[(30.08?8.05) ?mol/L](P_a

Objective To investigate the epidemiological characteristics of human brucellosis in Ulanqab of Inner Mongolia.Methods Three hundred and twenty patients with suspected brucellosis were selected,who had registered in the Ulanqab Center for Endemic Disease Control of Inner Mongolia from April to June 2011.The investigation covered general situation,such as gender,age,occupation and main clinical symptoms and so on.Blood samples were collected,and Rose Bengal plate agglutination test(RBPT) was used for serum screening.Those who were tested positive in RBPT were confirmed with tube agglutination test (SAT).Brucellosis was diagnosed according to Diagnostic criteria for Brucellosis (WS 269-2007).Data were analyzed with statistical software(SPSS 17.0).Results One hundred and thirty-four cases were positive in RBPT of the 320 people surveyed,of which 93 cases were positive in SAT; antibody titers were higher than 1 ∶ 100(++),therefore they were diagnosed as brucellosis,and the ratio was 29.1％(93/320).The number of patients with suspected brucellosis who were negative in SAT test was 41,and the ratio was 12.8％ (41/320).Among the 93 people who were infected,the constituent ratio of farmers and herdsmen who engaged in livestock was the highest,accounted for 63.4％(59/93) and 24.7％ (23/93) of the total number of patients ; infection rate of male (30.9％,55/178) was higher than that of females (26.7％,38/142) ; the number(39) of brucellosis patients who were over the age of 51 was the highest,and the ratio is 42.0％.The onset season mainly in May and August; main route of exposure was bare hands lambing,midwifery and contact with infected sheep pollutants.Conclusions Sheep is the main source of human Brucella infection in Ulanqab.It is the key to control the spreading of brucellosis through improving awareness of disease prevention among farmers and herdsmen as well intensifying the prevention and control of Brucella infection between livestock.

Objective To investigation the pathological characteristics of esophageal squamous cell carcinoma to provide reference criteria for delineating the target area in radiotherapy.Methods Fifty-two patients from the Fourth Hospital of HeBei Medical University underwent resection whom all had been proved to have esophageal squamous cell carcinoma before operation.Chest CT was scanned and transmitted to the 3- dimensional conformal planning system for radiotherapy by VRX-16 scanner.The lesion of esophageal carcinoma was delineated in the 3-dimensional rebuild CT image and the lesion volume was computed by digital rebuild program.Every surgically resected specimen was made into pathologic giant section.The actual size of the specimen was obtained by calculating the size under the microscope with the shrinkage ratio.Multicentric carcinomatous lesion,severe dysplasia and direct intramural infiltration were observed in the giant section with a microscope and the order of such pathological characteristics were analysed statistically.Results 1.The tumor length by different method of preparation of operated specimens differed obviously.The longest was shown by CT. 2.Multicentric carcinomatous lesion was found in 15(29%)cases out of 52 patients.Proximal to the tumor,the mean distance between the multicentric carcinomatous lesion and the main lesion plus the length of the multicentric carcinomatous lesion was 3.02?1.45cm.Distal to the tumor,it was 2.60?2.44 cm.Severe dysplasia was found in 28 patients.Proximally,the mean distance between the severe dysplasia and the main lesion plus the length of the severe dysplasia was 2.45?1.30 cm.Distal to the tumor,it was 3.24?2.19 cm.Direct intramural infiltration was found in 41 patients,of which the mean length being 2.80?1.52 cm proximally and 2.02?1.51 cm distally. 3.Tumor thrombus was found in 6 patients and lymphoduct infiltration in 36 patients.Direct intramural infiltration was found at higher incidence in specimens complicated with lymphoduct infiltration(86%)and those complicated with tumor thrombus(91%).There were no apparent factors affecting severe dysplasia.The proximal distance to direct intra- mural infiltration was much longer than distally.Conclusions Multicentric carcinomatous lesion,severe dysplasia and direct intramural infiltration may be observed in esophageal squamous cell carcinoma.Multicentric carcinomatous lesion and direct intramural infiltration are obviously correlated with lymphoduct infiltration.To cover 95% of the microscopic extension,a margin of 5.0 cm is needed proximal to the base of gross tumor volume,and 7.5 cm distal to it.To cover 90% of the microscopic extension,a margin of 4.5 cm is needed proximally,and 5.0 cm distally.

Objective:To assess the characteristics change of sleep architecture in drug naive patients with schizophrenia,compared with healthy control.Methods:The key words including schizophrenia and sleep architecture (or sleep structure or sleep disturbance or polysomnogram and so on) were used to search literatures in MEDLINE,Embase,Springer,PsychINFO,google scholar,Wanfang data,published from 1980 to 2015.Fifteen studies that compared sleep architecture in drug naive patients with schizophrenia and healthy control were included.Literature quality evaluation was performed with the Newcastle-Ottawa Scale.The meta-analysis was performed by using Stata13.0 software.Results:Compared to healthy control,the total sleep time decreased (P ＜ 0.01),the sleep latency increased (P ＜ 0.01),the sleep efficiency decreased (P ＜ 0.01),and the rapid-eye-movemem (REM) sleep latency increased (P ＜ 0.01) significantly in drug naive patients with schizophrenia.The proportion of stage1 was increased,and the proportions of stage4 and slow wave sleep stage were decreased,the differences between case and control were statistically significant.Conclusion:In the control of drug effects,patients with schizophrenia may have poorer sleep quality of be poorer than healthy controls,such as the decreased total sleep time,specifically slow wave sleep,prolonged sleep latency and decreased sleep efficiency.

Objective To study the expression and prognostic significance of neuroendocrine differentiation markers chromogranin A(CgA)and synaptophysin(SYN) in patients with resectable non-small cell lung cancer(NSCLC).Methods From January 2000 to January 2003,123 patients with NSCLC who received operations were investigated.The resected specimens and clinical data were collected.Immunohistochemical Elivison method was used to detecte the expression of CgA and SYN.Kaplan-Meier survival curve and Cox proportional hazard model multivariate analysis were applied for the prognostic factors. Results The positive expression rates of CgA and SYN were 22%,17.9%,respectively.The expression of SYN was associated with histological differentiation(P=0.001).No significant association was found between NSCLC with neuroendocrine differentiation(NSCLC-ND) and sex,age,smoke index,TNM Stage and pathology classification.No evidence showed the patients with positive expression of CgA or SYN could be tolerant with more cycles of chemotherapy(P=0.406).Kaplan-Meier survival curve indicated the survival had a relation with the expression of CgA and SYN.It was revealed by Cox analysis that SYN(P=0.001),TNM stage(P=0.02)and the maximal diameter of tumor(P=0.049) were independent prognostic factors. Conclusion The patients with NSCLC-ND had a poorer prognosis.SYN may be one of the prognostic factors in patients with NSCLC.

The proteins encoded by the Herpesviridae β-gene play a critical role in the replication stage of the virus. In this paper, phylogenetic analyses provided evidence that someβ-gene products, such as UL2 and UL23 from HSV1, have their homologous genes in its family, and also exist in prokaryotic organisms, indicating that these viruses appear to have been assembled over evolutionary time by numerous independent events of horizontal gene transfer.

ObjectiveTo develop school refusal reason inventory (SRRI)for children and adolescents in China and assess its reliability and validity.MethodsThe primary SSRI was made based on clinical interviews and literatures.Pretest was carried out in a small sample from a clinic.Then the final SSRI was developed after qualitative analysis and item analysis.SRRI,the Screen for Child Anxiety Related Emotional Disorders(SCARED) and Child Depression Inventory(CDI) were administered to school refusers from 7 schools in Shenyang.All the schools were selected from Shenyang City and its countryside by cluster sampling.Some of the students were retested after one month.Descriptive statistics and exploratory factor analysis were carried out to examine the reliability and validity of SRRI based on all the data.Results Item analysis indicated correlation coefficients between all the items and the total marks were higher than 0.3,and they were significant.All the critical ratios of the items were higher than 0.3.The 43 items were divided into six factors ( educational modality,factor of teachers,relationship with classmates,separated anxiety,study attitude and study environment) by exploratory factor analysis.The factor loading values were 0.372 ～0.848.The cronbach's α of each factor was 0.827,0.831,0.759,0.623,0.821 and 0.808.Retest reliability was 0.644 (P ＜ 0.01 ).Its correlation coefficient with SCARED was 0.452 and 0.548 with CDI.ConclusionAccording to Chinese cultural back ground,the SSRI corresponds with psychometric indexes.There are good reliability and validity.It is helpful to understand the reasons of school refusal behavior in children and adolescents.

OBJECTIVETo investigate the basic clinical characteristics of paraneoplastic neurological syndrome (PNS) in children.

METHODTo retrospectively analyze the clinical data of 12 PNS children who were hospitalized in neurology department in Beijing Children's Hospital from 2010 to 2011. Some patients were followed up after surgery.

RESULTIn 12 patients with PNS, 11 were male and 1 was female. The mean onset age were (30.5 ± 15.3) months. The mean duration from neurological symptom onset to finding out of tumor was (112.7 ± 154.4) days. The onset of the disease in 2 patients was acute, in 3 was subacute and in the other 7 was chronic (2 of 7 had 2 to 3 relapses). Of 12 patients, 11 had symptoms of ataxia (3 patients also had opsoclonus and myoclonus, OMS), 1 had weakness of limbs at onset and then had ataxia. Nine of 12 patients had surgery, and pathologic diagnosis was neuroblastoma and ganglioneuroma. Six patients were followed-up for 8 to 21 months. One patient had a little improvement and 5 almost recovered.

CONCLUSIONThe PNS children can have neurological symptoms only at the onset and there were no particular evidence of tumor. It is prone to misdiagnosis. The prognosis of PNS in children was poor.

Adrenocorticotropic Hormone ; therapeutic use ; Biomarkers, Tumor ; analysis ; Brain ; diagnostic imaging ; pathology ; Child, Preschool ; Female ; Ganglioneuroma ; diagnosis ; pathology ; therapy ; Humans ; Immunoglobulins, Intravenous ; therapeutic use ; Infant ; Magnetic Resonance Imaging ; Male ; Neuroblastoma ; diagnosis ; pathology ; therapy ; Opsoclonus-Myoclonus Syndrome ; diagnosis ; pathology ; therapy ; Paraneoplastic Syndromes, Nervous System ; diagnosis ; pathology ; therapy ; Prognosis ; Radiography ; Retrospective Studies

OBJECTIVETo analyze the stress distribution in temporomandibular joint (TMJ) with different depth of curve of Spee (CS) by three-dimensional finite element model (3D-FEM).

METHODSFEM with different depth of CS were established. The depth was 2.50, 0 and 4.50 mm (model 0, 1, 2). The stress distribution were analyzed by software Abaqus. The change of stress were analyzed by paried t test.

RESULTSThe stress distribution patterns in TMJ with different depth of CS were similar. The Von Mises on the anterior surface of condyle and the Von Mises on the intermedial zone of the disc was higher. The S. Max. Principal of the condyle was mainly tensile stress. The S. Min. Principal of the condyle was mainly compressive stress. The S. Max. Principal of the disc was mainly tensile stress. The S.Min. Principal of the disc was mainly compressive stress.In model 0, the eviations of the Von Mises, the S.Max. Principal and the S.Min. Principal on the anterior surface of condyle were 0.1057 - 0.2298 MPa, -0.2243 - -0.3738 MPa and -0.3494 - -0.1165 MPa. The eviations of the Von Mises, the S.Max. Principal and the S. Min. Principal on the intermedial zone of the disc were 0.1099 - 0.6880 MPa, -0.3217 - 0 MPa and -1.2000 - -0.1000 MPa. The D-values of of Von Mises of condyle and disk between different models were extremely significant (P < 0.01).

CONCLUSIONSWith the same plane of occlusion, the stress distribution patterns of TMJ with different depth of CS is similar to that of normal occlusion. The final results also validate the anterior surface of condyle and intermediate zone of articular disc are the weight-bearing areas in TMJ. The changes of depth of CS change the value of the stress.

Cephalometry ; Dental Occlusion ; Dental Stress Analysis ; methods ; Finite Element Analysis ; Humans ; Imaging, Three-Dimensional ; methods ; Mandibular Condyle ; physiology ; Stress, Mechanical ; Temporomandibular Joint ; physiology ; Temporomandibular Joint Disc ; physiology

Objective To discuss the value of vivo proton MR spectroscopy,perfusion and diffusion imaging in grading of diffuse astrocytomas.Methods One hundred fifty-four cases with diffuse astrocytomas proved pathologically were collected.35 cases with diffuse astrocytomas including 8 astrocytomas(WHO grade Ⅱ),13 anaplastic astroeytomas(grade Ⅲ)and 14 glioblastoma muhiforms (grade Ⅳ)underwent MR spectroscopy.The Cho/Cr,NAA/Cr and Lac/Cr of three groups in 35 cases were compared.The other 76 cases including 36 low-grade glial tumors(grade Ⅱ),20 anaplastic glial tumors (grade Ⅲ)and 20 glioblastoma multiforms(grade Ⅳ)underwent conventional MR imaging and dynamic contrast-enhanced perfusion MR imaging before surgical resection or stereotactic biopsy,the characteristics of the curve and the value of the maximum relative regional cerebral volume(rrCBV)in the diffuse astrocytomas with various grades were analysed.Fourty-three cases of diffuse astrocytomas including 26 astrocytomas(grade Ⅱ),6 anaplastic astrocytomas(grade Ⅲ)and 11 glioblastoma multiformes (grade Ⅳ)underwent diffusion MRI and the apparent diffusion coefficient rate(ADCR)were compared. Results The Cho/Cr of diffuse astrocytomas in three grades were 2.709?1.228,5.812?2.374 and 5.289?1.462 respectively.There were statistically significant differences between astrocytomas and anaplastic astrocytomas,astrocytomas and glioblastoma multiformes for Cho/Cr(P0.05).The Lac/Cr of diffuse astrocytomas in three groups were 0.100?0.083,1.879?1.595 and 3.656? 2.195 respectively,the differences among three groups were all significant(P0.05).The maximum rrCBV values of glial tumors with Ⅱ,Ⅲ and Ⅳ grade were 1.379?0.739,2.654?1.072,3.218?1.565 respectively and the differences among them were statistically significant(P