ObjectiveTo observe the changes in TSH receptor antibody (TRAb) and soluble intercellular adhesion molecule-1 ( sICAM-1 ) levels after treatment of propylthiouracil ( PTU ) and methimazole( MMI ) in patients with Graves' disease (GD). MethodsOne hundred and six cases of clinically diagnosed patients with GD were divided into PTU and MMI groups( each group, n =53 ). The patients in two groups were regularly followed for 36 months. TRAb and sICAM-1 were measured with ELISA method. Results( 1 ) The general data of two groups were not significantly different before treatment( all P＞0. 05 ). ( 2 ) There was no difference in TRAb positive rates between two groups before treatment. The clinical remission rates between PTU and MMI groups showed no difference (83.02％ vs88.68％ ). The cure rate was higher in MMI group than in PTU group( 58.49％ vs 37.74％, P＜ 0. 05 ). (3) There existed significant differences in TRAb levels determined before and 6, 12, 24,30, and 36 months after treatment( all P＜0. 01 ), being gradually decreased with time( F=275.48 ,P＜0.01 ). TRAb levels between two groups were significantly different( F=5.86, P＜0. 05 ). (4) sICAM-1 levels at 36 months after treatment compared with the baseline in both groups were statistically different (P＜0. 01 ), but no difference was found between two groups.ConclusionsBoth PTU and MMI improve the immune status of patients with GD,and the immunosuppressive effect of methimazole is more evident.

Objective Using recombinant TrxTSHRc protein which contains TSBAb antigen epitope as antigen, an enzyme linked immunosorbent assay (ELISA) was established. The cut-off of positive values of TSH receptor antibody (TRAb) was established. Methods Using recombinant TrxTSHRc protein as antigen, the optimum condition was determined, and the indirect ELISA for detecting TRAb (TRAb-C) in the serum of normal control subjects and thyroid disease patients was established. A total of 1 085 patients and healthy controls were tested for this antibody. Results TRAb-C ELISA mainly detected TSBAb. The A405((-x)±s) value in healthy group was 0. 319±0. 107 with a cut-off value ((-x)±2 s)of 0. 533. The positive rate in thyroid disease patients showed significant deviation, with 66. 01 % in patients with Hashimoto's thyroiditis, 41.68% in newly-diagnosed Graves'disease, 6.98% in simple goiter, 11.1% in subacute thyroiditis, 8.7% in nontoxic thyroid nodular goiter, and 3.2% in thyroid adenoma. Conclusion The TRAb-C ELISA mainly detects TSBAb, which is very valuable for autoimmune thyroid disease, especially for the diagnosis, prognosis and therapy evaluation in Hashimoto' s thyroiditis.

Objective To establish radioiodine therapy in nonthyroid tumor and to investigate 131Ⅰ treatment effect on xenografted ovarian cancer. Methods Based on previous test, xenografted ovarian cancer nude model were established in nude mice. The effects of radioactive isotope 99m TcO-4 imaging and radioiodine 131Ⅰ treatment on xenografted ovarian cancer in vivo were investigated. Results After transferring human sodium/iodide symporter (hNIS) gene, the xenografted ovarian cancer in nude mice was imaged by isotope 99m TcO-4 Moreover,131Ⅰ exerted inhibitory effect on the proliferative activity. Conclusion After the transfection of hNIS gene, 131Ⅰ has inhibitory effect on proliferative activity of xenografted ovarian cancer.

OBJECTIVETo investigate the capability of semi-quantitative and quantitative parameters of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) to predict the response to concurrent chemoradiotherapy( CCRT) in patients with non-small cell lung cancer (NSCLC).

METHODSA total of 24 patients with stage III or IIIB NSCLC, who underwent 3.0T DCE-MRI before CCRT, were enrolled in this study. Semi-quantitative and quantitative parameters were calculated by Funtool and Omnikinetics software. The relationship between these obtained parameters and tumor response was evaluated by Spearmen' s correlation analysis. The patients were classified into two groups according to the tumor regression rate after treatment, as response group (group A) and non-response group ( group B). Mann-Whitney U test was used to compare the parameters of responders and non-responders. The value of the parameters on predicting response was calculated by receiver operating characteristic curve (ROC).

RESULTSThe tumor regression rate after treatment was negatively correlated with time to peak (TTP) and the extravascular-extracellular volume fraction (Ve), and was positively correlated with signal enhancement ratio (SERmax) and volume transfer constant (Ktrans) (P < 0.05 for all). Statistical significant differences were found between group A and group B both in semi-quantitative and quantitative parameters (P < 0.05). Group A had a lower TTP value [(34.66 ± 16.37) s vs. (44.09 ± 17.41) s] and Ve value [(0.19 ± 0.03) vs. (0.25 ± 0.05)] than group B, whereas group A had a higher SERmax [(166.50 ± 44.95)% vs. (113.57 ± 46.62)%] and Ktrans [(0.41 ± 0.17) min(-1) vs. (0.28 ± 0.12) min(-1)] than group B (P < 0.05 for all). The ROC analysis indicated that when setting the threshold of Ve on ≤ 0.21 for predicting response, the specificity, sensitivity and accuracy were 85.7%, 80.0% and 83.3%, respectively, with an area under curve of 0.875 (P < 0.001).

CONCLUSIONSBoth the semi-quantitative and quantitative DCE-MRI parameters are helpful for predicting the response after CCRT of NSCLC. Quantitative parameters seem to be more meaningful than semi-quantitative parameters.

Carcinoma, Non-Small-Cell Lung ; pathology ; therapy ; Chemoradiotherapy ; methods ; Contrast Media ; Humans ; Lung Neoplasms ; pathology ; therapy ; Magnetic Resonance Imaging ; methods ; ROC Curve ; Remission Induction ; Sensitivity and Specificity ; Time Factors

Objective To analyze the changing rules of schistosomiasis endemic situation before and after reaching the crite-ria of schistosomiasis transmission controlled or transmission interrupted in Zhejiang Province,so as to provide scientific evi-dence for schistosomiasis contro1. Methods Xiuzhou District and Zhuji City were selected and investigated retrospectively to collect schistosomiasis epidemiological information 10 years before they reached the criteria of transmission controlled and the subsequent years until 2008. The database of retrospective investigation was established for analyzing the trends and rules of changes of Oncomelania hupensis snail status and schistosome infection status of cattle and human. Results The snail status and schistosome infection kept a steady declining before reaching the criteria of transmission controlled ,and there were positive correlations between the area of living snails and the infection rates of human and animal in two places(rhuman=0.764,P<0.01, rcatl e=0.709,P<0.01;rhuma=0.775,P<0.01,rcatl e=0.676,P<0.01);No local infection person and animal except residual snails, and found 7 cases of imported infection source were found after reaching the transmission interruption. Conclusion The epi-demic status of schistosomiasis in zhejiang is stable after reaching the criteria of transmission interruption ,and residual snail are easy to re-found and spread under some certain conditions,and some imported cases were found sometimes,which may in-crease the risks for re - emergence of schistosomiasis. The integrated solidification strategy with emphasis on control of residu-al snails and imported cases should be taken in the areas of transmission interruption in the future.

Objective To increase the mechanic characteristic of bovine jugular veins conduit (BJVC) by combined knitted stent outside made of nylon fiber. Methods Get rid of the cells of BJVC by enzymolysis, then combined a fabric stent with a acellular bovine jugular vein conduit that cross-linked dealed by photooxidation method to improve the mechanic function of BJVC. To compare the mechanical function and histology change of BJVC combined with fiber stent outside with that of BJVC only without stent. BJVC combined with fiber stent outside was divided into experiment group and the latter into control group. Two roller pumps on cardiopulmonary bypass unit were designed to simulate the pulmonary circulation. One produce the stream, and the other assist to bring a certain pressure by regulating a degree of tightness. The pressure of forward stream was used in messuring extension rate and leakage volume of two BJVC groups, and the pressure of backward stream was used in messuring the regurgitation volume. Results Set the formula to calculate the rate of variation of BJVC diameter under a certain pressure or not. The experiment group extension rate was zero under pressure of 10-20 mm Hg, about ( 7.7 ± 2.3 ) % under pressure of 40 mm Hg, until 60 mm Hg to ( 11.4 ± 3.1 ) %. While the control group reached about ( 14.8 ± 4.7 ) % at 20mm Hg already. There was no regurgitation volume of the experiment group under pressure of 30 mm Hg vs. the control group' s reached 34ml/min at 30 mm Hg while the two groups were same under pressure that lower than 20 mm Hg. When the pressure higher, the difference between the two groups more notable. There was no leakage of the BJVCs with fabric stent till pressure from 40 mmHg to 60mmHg, vs. the control group 1,5, 13 ml/min at pressure 30, 40, 60 mm Hg. Except the regurgitation and leakage volumes under pressure at 10 -20 mm Hg, as the two numerical values were both zero that can not be caculated by the statistic software, the differences of the two groups above had statistics significance. In vivo, 9 dogs received bovine jugular vein conduit transplant procedure to observe the mechanic fnction and tissue reaction. Five adopted B.JVC with stent and four just BJVC only. Six month later after the transplant procedure, there was no significant difference between the two groups but more inflaming cells than the former group, especially at the location round the nylon fibers. Through the observation in HE stain, that was considered as foreign body reaction. Conclusion Fabric stent can improve the mechanical function of BJVC and relatively easy to get.

Objective: To establish a new method for determining residual organic solvent DMF in imiquimod. Methods: The samples were injected into an Agilent HP-PLOT/Q capillary column(30 m × 0. 530 mm,40. 0 μm) by a headspace sampler and ana-lyzed with an FID detector, the carrier gas was nitrogen, the inlet temperature was 250℃, and the detector temperature was 270℃. The column temperature was programmed raised. Results: The resolution among the peaks of DMF and the other residual solvents could meet the requirements. There was a good linearity within the experimental concentration range. The average recovery was 94. 6%(RSD=4. 0%, n=9). The limit of quantification and the limit of detection was 4. 809μg·ml-1 and 0. 963μg·ml-1, respectively. Conclusion:The method is convenient, accurate and sensitive, which can be used in the determination of residual solvent DMF in imi-quimod.

Objective To explore the effect of ciliary,neurotrophic factor (CNTF)-coated polyglycolic and polylactic acid (PGLA) nerve conduits treated by pulsed plasma to repair canine tibial nerve defects. Methods A 2.5 cm long tibial nerve defect was made in eighteen cross-bred dogs.The nerve defects were re- constructed by three different methods:group A:pulsed plasma treated and CNTF coated PGLA nerve conduits (n=6);group B:PGLA nerve conduits alone (n=6);group C:nerve autografts (n=6).HE staining, Massons' trichrome staining,S-100 immunostaining,electrophysiological test and axon counting were used to evaluate the results of nerve regeneration in three groups.In addition,the dynamic walking pattern was recor- ded individually.The observation period lasted for three months.Results All nerve conduits were well vas- cularized and mostly degraded as well as absorbed.It was found that the regenerating axons could traverse all nerve conduits.In regard to nerve conduction velocity and axon counting there was no significant difference be- tween group A and group C (P＞0.05),while the data of group A and group C were significantly better than those of group B(P＜0.05).The dogs in group A and C recovered nearly normal walk pattern while those in group B were still crippled.Conclusion Pulsed plasm-treated and then CNTF-coated PGLA nerve conduits could effectively repair 2.5-cm-long canine tibial nerve defects,and the effect is similar to that of autografts.

Objective To evaluate the diagnostic values of the breast imaging reporting and data system-MRI (BI-RADS-MRI)description about non-masslike enhancement by data mining. Methods Fifty-five patients with non-masslike enhancement lesions showed on breast contrast-enhanced MRI were evaluated using two data mining algorithms (Logistic regression and decision tree) and 10-fold cross-validation methods. Results There were 28 malignant and 27 benign lesions. The most frequent findings of the malignant lesions were clustered ring enhancement and clumped enhancement [ 12 and 4 lesions, respectively; 84. 2% (16/19) in decision trees, partial regression coefficients in Logistic model were 2. 128 and 1.723, respectively], whereas homogenous, stippled, reticular internal and linear ductal enhancement were the most frequent findings in benign lesions [ 4、9、1 and 7 lesions, respectively; 72. 4% (21/29) in decision tree, partial regression coefficients in Logistic model were 0.357 (homogenous), 1. 861 (stippled) and 18. 870( reticular), respectively]. 10-fold cross-validation indicated that decision tree (C5.0) achieved an accuracy of 69.3% with a sensitivity of 66.7% and a specificity of 71.7% in comparison to the Logistic regression model with an accuracy of 57. 0%, a sensitivity of 43.3% and a specificity of 71.7%. Conclusions The diagnosis efficacy of non-masslike enhancement interpretation according to BI-RADS-MRI is not high. It is very important to find more potential features of non-masslike enhancement to improve the diagnosis accuracy.

Objective To investigate the rehabilitation needs and technical support for people with disabilities in rural areas. Methods From October, 2017 to February, 2018, 800 persons with disabilities, aged five to 80 years, from 23 villages in five township, Xi'an, Shaanxi, were surveyed with self-designed questionnaire and interview, including the basic situation, disability and training plan, rehabilitation support and skills maintained. Results The persons were mainly aged 50 to 80 years (58.37%), male (65.37%), accepting middle school education or less (46.63%), married (70.63%), living with their family (77.38%), income less than 2000 Yuan (66%), mainly from their family labor (62.62%). Their disabilities were mainly of grade 3 (40.63%), from hemiplegia (30.63%), dependence in living (45.38%), and no systematic rehabilitation program (55.25%). Most of them needed rehabilitation of self-care (40%), accessible guidance (30.63%) and reimbursement from medicare of Rural Cooperative Medical Scheme (50.63%), and hoped to participate social activities (41.87%). The rehabilitation supports were as that: the rehabilitation services were mobile or none (67.58%), the guiders of rehabilitation were few or none (48.88%), knew some or less rehabilitation knowledge (64.25%), the professionals accepted no continue education training (40%).Conclusion It is important to improve the rehabilitation technical support system for rural people with disabilities.