Objective To investigate the epidemiological characteristics of children infected by mycoplasma pneumoniae(MP)over the last five years in Kunming region.Methods Indirect immunofluorescence assay was used to detect blood MP-IgM of hospitalized patients from January 2003 to December 2007 in order to determine the age and gender distribution characteristics of MP infection and to investigate the epidemiological features of the five years' results.Results Infection incidences by MP in Kunming region over the last five years were 20.9%,14.3%,17.5%,15.7%and 19.5%,respectively.Statistical significance was found among the groups mentioned above(P＜0.01).The MP infection incidences in different age groups were 10.7%(～1 year old),20.5%(～3 years' old),21.5%(～6 years' old)and 21.7%(～14 years' old).MP infection incidences showed age and gender characteristics(P＜0.01).Infants showed lower NIP infection incidence and infection incidence was higher in female.The epidemiological investigation indicated that MP infection incidences varied from year to year(P＜0.01).The infection incidences of 2003 and 2007 by MP were higher than those of the other years.There were epidemiological differences in infection incidences by NIP over last five years(summer,autumn and winter).The MP infection incidences showed seasonal differences(P＜0.01).Conclusion Mycoplasma pneumoniae was the main local causative agent responsible for respiratory tract infection in children aged under one years' old in Kunming region.Over the last five years,there were two outbreaks in the local area,but with no seasonal regularity of epidemiology.

Objective To establish chromatographic fingerprint of Cistanche deserticola by HPLC and evaluate the difference of inner qualities of samples from different habitats.Methods HPLC gradient elution was applied to establish the chromatographic fingerprint and "Computer Aimed Similarity Evaluation System" was used in data analysis.Results This chromatographic fingerprint method has good precision, stability, and repeatability; the fingerprints of the samples from different habitats were quite different.Conclusion There are notable differences in inner qualities of the samples from different habitats.This chromatographic fingerprint method can be used to evaluate the quality of C.deserticola.

Objective To evaluate the feasibility,safety and accuracy of endoscopic ultrasonography guided fine-needle aspiration(EUS-FNA) in patients with mediastinal benign and malignant lesions.Methods A linear array scanning endosonography (Pentax-EG3630U) and a 22-guage (Wilson-CooK) needle were used to perform EUS-FNA in 22 patients with mediastinal lesions.Results EUS-FNA revealed 15 patients with carcinoma and 6 cases with benign tumors,which were confirmed by mediastinoscopy.One patient was not diagnosed because of inadequate specimen.None of the patients had complications caused by any procedures.Conclusion EUS-FNA is safe,reliable and accurate in diagnosis of mediastinal benign and malignant lesions.

Hepatitis B surface antigen (HBsAg) carrying preS sequences could be an ideal candidate for a new hepatitis B virus (HBV) vaccine with higher efficacy. Here we report the success in achieving efficient and stable expression of hepatitis B virus S antigen and preS1 epitope fusion protein (S/preS1) in CHO cells. The HMRCHEF53u/Neo-S/preS1 expression vector carrying S/preS1 gene was constructed and transfected into CHO-S cells. A stable and high-expression CHO cell line, named 10G6, was selected by ELISA and limiting dilution analysis. Western blotting analysis showed S/preS1 expressed from 10G6 cells possessed both S and preS1 antigenicity. 10G6 cells displayed characters of favorable growth and stable S/preS1 expression in repeated batch cultures as evaluated by viable cell density, viability and S/preS1 concentration. And cultivation of 10G6 cells in fed-batch mode resulted in S/preS1 production at 17-20 mg/L with viable cell density at 7 x 10(6)-10 x 10(6) cells/mL.
Animals ; CHO Cells ; Cricetulus ; Epitopes ; biosynthesis ; genetics ; Hepatitis B Surface Antigens ; biosynthesis ; genetics ; immunology ; Hepatitis B Vaccines ; biosynthesis ; genetics ; Hepatitis B virus ; Protein Precursors ; biosynthesis ; genetics ; immunology ; Recombinant Fusion Proteins ; biosynthesis ; genetics ; Transfection

Objective To study the pathogenic features, diagnosis and treatment of aberrant thyroid cancer.Methods A retrospective analysis of clinical and pathological data of 29 cases of aberrant thyroid cancer was made.Results All of the 29 patients underwent operative treatment and postoperative adjuvant radiation therapy and chemotherapy. On postoperative follow up, the 5-year survival rate was 52.0%. The longest survivor patient was alive 24 years after operation.Conclusions The key to increase the survival rate of patients is early detection and timely surgical treatment. Postoperative adjuvant radiation therapy and chemotherapy are conducive to increase survival rate.

Objective:To conduct clinical psychological intervention for the perioperative patients through solu-tion focused approach, excavate potential and improve the adaptation ability. Methods: On the basis of establis-hing a good nurse-patient relationship, the application of the solution focused approach was conducted in the peri-operative patients ( description of the problem, the construction of specific aims, and discussion on the exception, giving feedback, and evaluation of progress) . Results:After the intervention of solution focused approach, the pa-tients′negative emotion such as nervousness, anxiety, fear and depression decreased significantly (P <0. 05). Conclusion:Psychological intervention could effectively eliminate the negative mood of patients, improve the doc-tor-patient relationship, dissolve the contradiction between doctors and patients, reduce the incidence of medical disputes, and thereby enhance mutual understanding, trust and respect between doctors and patients, which makes the doctor-patient relationship more harmonious.

0.5ug/ml in 34 patients(79.1%).Postoperative survival rate and recover of the work ability in group T were significantly higher than those in group C.Conclusions EPTT before RT for the type I diabetes patients with renal disorder can improve the results of RT.

Objective:To investigate the effects of miR-125b on radiosensitivity of cervical cancer cells and its possible downstream mechanism.Methods:The expression of miR-125b and Foxp3 in cervical cancer tissues and cells was detected by RT-qPCR. The HeLa cells were irradiated with 0, 2, 4 and 6 Gy of X-rays. The expression of miR-125b and Foxp3 in each group was detected by RT-qPCR. After downregulation of miR-125b expression and 6 Gy X-ray irradiation, the proliferation ability of HeLa cells was detected by MTT assay, and the expression of Bax and Bcl-2 proteins were detected by Western blot. The relationship between miR-125b and Foxp3 was detected by Targetscan and Dual luciferin reporter assay. After downregulation of Foxp3 expression and 6 Gy X-ray irradiation, the proliferation ability of HeLa cells was detected by MTT assay, and the expression of Bax and Bcl-2 proteins were detected by Western blot. The effects of miR-125b on radiosensitivity of HeLa cells through Foxp3 were detected. After down-regulation of Foxp3, the contents of IL-10 and TGF-β in supernatant were detected by ELISA.Results:The expression of miR-125b in the tissues and cells of cervical cancer was significantly decreased, while the expression of Foxp3 was significantly increased. The expression of miR-125b in HeLa cells was increased after radiation in a dose dependent manner. The expression of Foxp3 in HeLa cells was decreased after radiation in a dose dependent manner. After 6 Gy X-ray irradiation of HeLa cells, down-regulation of miR-125b increased the cell proliferation capacity, significantly reduced the expression of Bax and increased the expression of Bcl-2. miR-125b targets Foxp3 and negatively regulates Foxp3 expression. After 6 Gy X-ray irradiation of HeLa cells, down-regulation of Foxp3 significantly reduced the proliferation capacity of HeLa cells, increased the expression of Bax and decreased the expression of Bcl-2. Overexpression of miR-125b can enhance radiosensitivity of HeLa cells through Foxp3.After 6 Gy X-ray irradiation, down-regulation of Foxp3 reduced the expression of IL-10 and TGF-β in cells.Conclusions:Upregulation of miR-125b enhances the radiosensitivity of cervical cancer cells by targeting and negatively regulating Foxp3, and the mechanism of that may be related to the down-regulation of Foxp3 to reduce the expression of IL-10 and TGF-β in the cells.

The cultivation of research ability can promote eight-year medical students to explore the uncharted academic fields and solve complex clinical problems. One of the firts pilot universities to provide eight-year programs, Xiangya Medical College of Central South University builds on its profound experience in medical education, and establishes a curriculum structure aiming at improving the students' research ability. In the general education stage, cross-disciplinary courses are set up. In the core medical education stage, basic medical innovation experiment extracurricular research courses are set up, and a two-year overseas exchange program is set up in the postgraduate training stage. Different evaluation methods are also designed to meet the specific needs in each stage. This program has achieved preliminary effects.

Objective To study the correlation between ultrasonographic features of thyroid nodule and BRAFV600Emutation. Methods A total of 179 patients with 194 suspicious throid nodules were included in this study. They underwent ultrasound, biopsy, pathology and BRAFV600Emutation examination between October 2015 and February 2016 at Chinese PLA General Hospital. The size of nodules were (1.1±0.8) cm. The size, echo, boundary, shape aspect ratio, calcification and capsular invasion of nodules were investigated. The correlation between ultrasonographic features of thyroid nodule and BRAFV600Emutation analyzed by chis-square test and Logistic Regression analysis using statistical data as independent variable, BRAFV600Emutation as dependent variable. Results There were significant different in nodule′s ratio, boundary, capsular invasion characteristic between the BRAFV600Epositive group and the BRAFV600Enegative group(χ2=11.174,45.517,11.046,all P < 0.05),and these signs are possibly associated with BRAFV600Emutation by logistic regression model analysis(OR=2.276,95%CI:1.117-4.638, P < 0.05; OR=8.412, 95%CI: 3.836-18.448,P < 0.001; OR=2.582, 95%CI: 1.138-5.860,P < 0.05). Conclusions The ratio, boundary, capsular invasion characteristic of thyroid nodules are possibly associated with BRAFV600Emutation. These signs can be used to predict BRAFV600Emutation and facilitate subsequent treatment for such nodules.