Objective To evaluate the MRI findings and clinical features of methotrexate-induced acute encephalopathy in children.Methods The clinical data and brain MRI obtained in 13 children with methotrexate-induced acute encephalopathy were retrospectively reviewed.The MRI features were analyzed , including information on the location , the signal intensity and follow-up MRI study was performed.Results Of the 13 patients , 2 patients suffered from seizure.Five patients had dysphasia , of which 4 patients had evidence of hemiparesis , 1 patient had right facial palsy.Five patients had unilateral weakness.And left hemiparesis was observed in 1 patient.DWI revealed well demarcated asymmetrical hyperintensity lesions within the centrum semiovale and/or periventricular white matter in 10 patients, corresponding to areas of hypointensity on ADC maps.One case showed hyperintensity areas in the bilateral supratentorial cortex and subcortical white matter on T 2-weighted images with subtle high-intensity on DWI.In all 10 cases there were resolution of the diffusion abnormality , 8 cases displayed residual FLAIR signal abnormalities involving areas of previously seen diffusion restriction , 5 cases showed decreased range of the lesion , 1 case was progressive, and 2 cases were stable.One case with hyperintensity areas in the supratentorial cortex and subcortical white matter showed small residual hyperintensity on T 2-weighted images and resolution of the diffusion abnormality.Conclusions MTX-induced acute encephalopathy often manifests as stoke-like symptoms.DWI is the imaging modality of choice for the detection of acute MTX neurotoxicity , and asymmetrical restricted diffusion in the deep white matter is the characteristic sign.Cytotoxic edema induced by MTX is transient and reversible .

Objective To observe the influence of diabetes educationon the treatment compliance and quality of life (QOL) of diabetics and to find out the influencing factors of diabetics' QOL. Methods This study applied the questionnaire of compliance and the SF-36 to make an investigation on diabetics. Ninety diabetics who participated in the course of diabetes education during the period from October 2008 to March 2009, and 205 diabetics who were seen in the first affiliated hospital of China Medical Universitybut never participated in the course of diabetes education during the period from September to October of 2008. By comparing the data with control group and using self-paired comparison, the influence of diabetes education on the treatment compliance and the QOL of diabetics was studied. The factors influencing the QOL of each dimension were analyzed by means of single or multiple regressions. Results The treatment compliance of patients was improved with the number of times that these patients participated diabetes education was increased (P<0.05). The treatment compliance of the patients in hospital who had not participated in diabetes education was improved temporarily. However, 2 weeks after these patients were discharged the treatment compliance of these patients had began to decline. The treatment compliance would be declined if patients discontinued participating education for a long time. After 24 weeks intevention, the total score of compliance of intervention group (42.44±4.10) was higher than control group (35.60±3.90), and also higher than the intervention group before intervention (34.56 ± 4.34) (all P<0.01). The scores of 5 dimensions were significantly different (P<0.05 or 0.01). Of 8 dimensions of intervention group, the scores of vitality, social functioning, role-emotional and mental health were all increased after intervention, with significant differences except for role-emotional (P<0.05). The mental health index of patients with long-term health education was increased to a certain degree. Conclusion Long-term health education plays an active role in treatment. Insisting on taking part in health education regularly can improve the quantity of mental health.

To providing evidence about nitrogen adequate application of Platycodon grandiflorum, the pot culture experiment was conducted to study the effect of nitrogen on the growth, physiological metabolism and the quality of P. grandiflorum. The activity of NR, GS and SOD, POD and CAT were determined. And the nitrate and ammonium nitrogen content, photosynthetic characteristics, active components of P. grandiflorum were determined. The results showed that the nitrate nitrogen content and P. biomass reached its maximum value, when NH4(+)-N/NO3(-) -N was 0: 100, the activity of NR. The activity of GS was the highest at the NH4(+) -N/NO3(-) -N ratio of 25:75 and ammonium nitrogen content was the highest at 75:25. The activity of SOD decreased and then increased with the increasing of NO3(-) -N. At the NH4(+) -N/NO3(-) -N ratio of 25: 75, the activity of CAT had its maximum value and the content of MDA had the minimum value. At the same time, the content of platycodon D was the highest at this treatment. The studies had shown that different nitrogen forms and ratio had a significant effect on the characteristics of photosynthetic physiology, nitrogen metabolism and resistance adjustment, growth and the quality of P. grandiflorum. The NH4(+) -N/NO3(-) -N ratio of 25: 75 was a suitable ratio of nitrogen forms for the growth of P. Grandiflorum and accumulating the content of platycodon D.
Ammonium Compounds ; metabolism ; Biomass ; Drugs, Chinese Herbal ; analysis ; metabolism ; Nitrates ; metabolism ; Photosynthesis ; Plant Leaves ; chemistry ; growth & development ; metabolism ; Platycodon ; chemistry ; growth & development ; metabolism

Animals ; Extremities ; blood supply ; Ischemia ; metabolism ; Male ; Myocardial Reperfusion Injury ; metabolism ; Nitric Oxide ; blood ; Oxidative Stress ; Rats ; Rats, Wistar

Objective To construct eukaryotic expression plasmid of human B7-H1 extracellular region-hIgG1Fc-pCI-neo eukaryotic expression vector,and express the functional fusion protein in mammalian CHO cell.Methods Full-length human B7-H1 encoding sequence was amplified from human activated T cell cDNA library by PCR,fused with hIgG1Fc,then transformed into pCI-neo expression vector and verified by sequencing.The validated recombinant was transfected into mammalian CHO cell by lipofectamine reagent.The supernatant of the cultured cell was collected and analyzed by the sandwhich ELISA to detect if there was the fusion protein,and the fusion protein was purified by HiTrap recombination protein Protein A affinity chromatography.The concentrated supernatant or purified fusion protein were used for Western blotting after SDS-PAGE to identify the molecular weight and immune activity of the fusion protein of B7-H1.Results The extracellular region of hB7-H1 about 727 bp was cloned from human T cell cDNA library and was inserted with hIgG1Fc into the eukaryotic expression vector pCI-neo.After the transfection of recombinant into mammalian CHO cell by lipofectamine reagent,the expression of B7-H1 fusion protein was detected in the cultured CHO cell supernatant by the sandwhich ELISA.The immune activity of the fusion protein was verified by Western blotting,and its molecular weight was about 51.76?10~(3),very close to the expected value.Conclusion The hB7-H1-Fc chimeric molecule was successfully constructed and the expression of its functional fusion protein in mammalian CHO cells lays a foundation for further research on the role of B7-H1 in immune tolerance,autoimmune diseases.

Objective To evaluate the effect of tissue factor (TF), tissue factor pathway inhibitor-1,2 (TFPI-1,2) on cancer metastases and thrombosis complicated with cancer. Methods Blood samples from 292 cancer patients were collected and were divided into different teams according to cancer types,complicated with or without thrombosis; TF, TFPI-1, TFPI-2, plasma concentrations were measured by ELISA;Tissue expression of TF, TFPI-1, TFPI-2 were observed by immunohistochemical method. Results Plasma concentrations of TF and TFPI-1 in all kinds of cancers were higher than the control and lung cancer was the highest; TFPI-2 plasma concentrations had no statistics differences among all these teams. Tissue expression of TF of all kinds of cancer were higher than the adjacent tissues, lung cancer was higher than the other types of cancer. There were no statistics differences for TFPI-1 and TFPI-2. Both TF and TFPI-1 plasma concentrations of cancer with-or without-thrombosis were higher than control. TF was even higher in cancer with thrombosis team, TFPI-1 had no statistic difference between these two teams. TFPI-2 concentrations had no differences among all these teams. Conclusion Many kinds of tumor have higher expression of TF, it is expressed with different intensity according to different types of cancer. TFPI-1 has no clear effect in cancer growing and metastases. Unbalance of TF and TFPI-1 in plasma may relate to high coagulation state of cancer and may accelerate the thrombosis formation in cancer.

Objective To develop an equipment purchase process management module based on B/S architecture to standardize hospital equipment purchase process and promote hospital informatization. Methods Service-oriented architecture (SOA) was adopted as the main architecture, and internet information service (IIS) manager was used as the publishing tool.Results All the departments could visit the system through hospital intranet and perform on-line equipment purchase and inquiry for progress.Conclusion The system facilitates the inquiry of all departments for the progress of equipment purchase, and standardizes and optimizes the equipment purchase process.

Objective To explore the imaging features on chest radiograph and CT in children with Influenza A H1N1 pneumonia. Methods The imaging data of chest radiograph and CT in six children with Influenza A H1N1 pneumonia confirmed by real-time RT-PCR assay was retrospectively analysis. All patients had chest radiograph at first examination and 4 of them re-examed. One children took CT. Results All cases showed thick lung markings with varied degrees of pulmonary infiltration and interstitial changes on chest radiograph. Among them, 3 cases showed bilateral pulmonary infiltration and 3 cases showed infiltration in left lung; enlarged hilar was observed in 3 cases. The imaging findings of the pneumonia changed quickly during the follow-up accompanied with the improvement of clinical symptoms. The only one chest CT examination showed bilateral infiltration, multiple ground-glass opacities,small subpleural nodulars, right pleural effusion and lymphadenopathy of lung hila and mediastinum. Conclusions Chest radiograph and CT revealed certain typical imaging features in the children with influenza A H1N1 pneumonia. However, the final diagnosis of influenza A H1N1 pneumonia still should be made based on epidemiology and laboratory examination.

Objective To investigate the CT imaging findings of thymus and thyroid gland involved in Langerhans cell histiocytosis(LCH) of pediatric patients. Methods CT image findings in pediatric patients with LCH confirmed by pathology and clinical diagnosis from January 2006 to February 2015 were retrospectively analyzed. By radiography, 38 cases' thymus gland were involved and 8 cases' thyroids gland were involved. Results Plain CT scan for thymus gland involved patients revealed 9 cases were shown as hyperplasia, 17 cases were shown as calcification, 9 cases were shown as hyperplasia with calcification, 1 case was shown as cavity, 1 case was shown as hyperplasia with calcification and cavity and 1 case was shown as hyperplasia with calcification and low density. Enhanced CT scan for thyroid gland involved patients showed bilateral or unilateral enlargement of thyroid gland with heterogeneous low density and unobvious enhancement. Conclusions Finely calcifications were the most common CT findings on thymus gland involved in LCH and might without hyperplasia. CT imaging of thyroid LCH exhibited an enlarged or normal size and abnormal density in the thyroid gland with adjacent soft tissues involved.

Objective To explore the short axial strain of left ventricle in patients with atrial septal defect(ASD)before and after the transcatheter closure by using two-dimensional speckle tracking imaging (2D-STI).Methods A total of 30 patients with ASD underwent echocardiography before and after the transcatheter closure.The procedure was performed to obtain the peak of circumferential strain(Sc)and radial stain(Sr)of left ventricle by 2D-STI.Thirty healthy volunteers were enrolled as controls.Results ①Compared with the control group,regional myocardial Sc of ASD group decreased(P <0.05).Sc of anterior septum (AS),anterior wall (AW),laterior wall (LW)and posterior wall (PW)increased (P <0.05)at 2-days after the transcatheter closure and those parameters were higher than control group.At the six-months after the transcatheter closure,those parameters reduced to the normal level (P <0.05).Sc of inferior wall (IW)and mid-posterior septum (MP-Sept)increased to the normal level at 2-days after the closure surgery (P <0.05).②Compared with control group,regional myocardial Sr of ASD group decreased(P <0.05 ) except PW,two-days after the transcatheter closure these parameters increased to the normal level.Sr of PW in ASD group increased compared with control group(P <0.05),and there were no statistical changes at 2-days after the transcatheter closure.Sr of PW in ASD decreased (P <0.05 )to normal level until 6-months after the transcatheter closure.③ Global circumferential strain (GCS)of left ventricular in ASD group were lower than control group (P <0.05 ).At two-days after undergoing transcatheter closure the GCS increased (P <0.05)and those parameters were higher than control group (P <0.05).Six-months after the transcatheter closure those parameters reduced to the normal level (P < 0.05 ).There were no statistical differences of left ventricular global radial strain (GRS)between control group and ASD group. However,the GRS of ASD group increased (P < 0.05 )and those parameters were higher than control group (P <0.05)after 2-days undergoing the transcatheter closure.At six-months after the transcatheter closure those parameters were reduced to normal level (P <0.05 ).Conclusions 2D-STI can quantitative evaluate left ventricular circumferential strain and radial strain in patients with ASD before and after the transcatheter closure.