Objective To investigate the expression of vascular endothial growth faetor(VEGF) proliferating cell nudear antigen(PCNA) and their biological significance was studied in papillary thyroid carcinoma and normal thyroid tissues. Methods Immuohistochemismy S-P technique was used to examine the expression of VEGF and PCNA in specimens of 58 papillary thyroid carcinoma and 19 normal thyroid tissues. Results The positive rates of VEGF and PCNA in papillary thyroid were higher than those in normal thyroid tissues( P＜0.01 ), and a positive correlation between these two expressions existed in papillary thyroid carcinoma. Conclusion VEGF and PCNA could be regarded as parameters to evaluate the biological behavior and they might be the indices for juvant diagnosis and evaluation of papillary thyroid cancer.

Proteio degradation via ubiquitin-proteasome system(UPS) is carried out with a wide variety of signallingpathways,from cell cycle and transcription to development.The mass spectrometry-based proteomics techniques are powerful tools in the research of UPS.The recent advance in the study of UPS by proteomics techniques is briefly reviewed.

The good cooperation between the operating room nurses and anesthesiologists is benefitial to improving working efficiency and can make the patients uneventful during operating period.As an anesthesiologist,the author taught the basic anesthesia knowledge such as the commonly used anesthesia methods,the prevention and treatment of complications and gave advice to the nurses of the nursing trainning group.The cooperations before anesthesia,during anesthesia,after anesthesia were analyzed and the significance of nursing cooperation with anesthesiologist was discussed.

Diabetes mellitus is a typical metabolic disease.Its complications cause the main damage and lead to high mortality and disability eventually.The exact mechanism of diabetes is still unknown at present,and no radical cure of it is available.Therefore,the prevention of diabetes has become a priority.Metabolomics as a new technology can identify and measure the entire metabolic changes in the organism,and therefore has been widely applied to diabetes related studies with its enormous potential.

Objective To investigate the value of C-reactive protein (CRP),serum amyloid A (SAA) and CD64 in early diagnosis of sepsis in very low birth weight infants (VLBWI).Methods Fifty-four VLBWI suspected to sepsis and 20 VLBWI without infection in neonatal intensive care unit of the Second Hospital of Wenzhou Medical College from May 2010 to May 2012 were enrolled in this study.CRP,SAA and CD64 of sepsis group were measured at 0 and 24 hour after suspected bacterial infection; and those of control group were measured at corresponding age.CRP and SAA were detected by enzyme-linked immunosorbent assay,and CD64 was detected by flow cytometry.The difference between groups was compared by Mann-Whitney U test.Receiver operating characteristic curve was used to predict the sensitivity and specificity of the three biomarkers on sepsis.Results Fifty-four VLBWI were suspected with sepsis,and 37 patients were finally diagnosed.The levels of the three biomarkers in sepsis group were higher than those of control group not only at 0 h [CRP:13.3 mg/L(4.6-67.2 mg/L) vs 4.4 mg/L(1.6-11.2 mg/L),Z=-2.308; SAA:95.7 mg/L(4.5-265.9 mg/L) vs 7.3 mg/L(2.5-16.9 mg/L),Z=-2.425; CD64:7306 fluorescent antibody molecules/cell (2667-10 853 fluorescent antibody molecules/cell) vs 2502 fluorescent antibody molecules/cell (1839-3017 fluorescent antibody molecules/cell),Z=-3.704],but also at 24 h[CRP:35.4 mg/L (7.7 106.5 mg/L) vs 3.2 mg/L (1.1-7.8 mg/L),Z-5.501; SAA:359.3 mg/L (3.8-503.2 mg/L) vs 6.6 mg/L (3.0-12.7 mg/L),Z =-2.818; CD64:8304 fluorescent antibody molecules/cell (2819-11 758 fluorescent antibody molecules/cell) vs 2563 fluorescent antibody molecules/cell (1760-3154 fluorescent antibody molecules/cell),Z =-7.670],P＜0.05 respectively.The best cutoff value of CD64 was 2934 fluorescent antibody molecules/cell,with the sensitivity of 81.1％ at 0 h and 91.9％ at 24 h; and the specificity of 90.0％ at 0 h and 80.0％ at 24 h.Although SAA had similar sensitivity (0 h:83.8％; 24 h:86.5％) as CD64,its specificity was relatively low(0 h:65.0％; 24 h:55.0％).Both the sensitivity (0 h:62.2％; 24 h:70.3％) and specificity (0 h:70.0％; 24 h:70.0％) of CRP were low.Combination of the three infection biomarkers could increase the sensitivity (0 h:91.9％; 24 h:97.2％) and specificity (0 h:95.0 ％ ; 24 h:90.0％).Conclusions Combination of CRP,SAA and CD64 might improve the diagnostic accuracy of sepsis in VLBWI.

Objective To assess the therapeutic effect of esomerphrazole in treating patients with gastroesophageal reflux disease (GRED) between Han and Inner Mongolia populations.Methods Those who underwent endoscopic examination and had reflux disease questionnaire (RDQ) >12 from March 2006 to March 2008 were selected. The patients were divided into Han group and Inner Mongolia group with 120 each. All patients were received esomerphrazole 20 mg daily for 6 weeks. The patients were evaluated by RDQ questionnaire at 2nd, 4th and 6th week, and were reexamined by gastroscopy at 6th week. Results After two weeks, effective rate of 50% was achieved in both groups, but it was higher in Han group than in Inner Mongolia group at 4th and 6th week. After 6 weeks, the curative rate of RE was higher in Han group than in Inner Mongolia group. Conclusion The different nations ancl habits result in the different efficacy of esomerphrazole, which may be improved by prolonging time of medication and changing habits.

Objective To explore the changes in fractional anisotropy (FA) among cerebral infarction pa-tients using MR diffusion tensor imaging (DTI), and to verify the relationship between any FA changes and functional recovery. Methods Thirty-eight cerebral infarction patients were divided into two groups according to their recovery level using Brunnstrom's criteria. All the patients accepted routine MR and DTI examination, and FA values were measured during the acute, subacute and chronic stages of their recovery. Results Average FA values in the lesion area were significantly lower than in the corresponding contralateral area, and were highest daring the acute stage.There was no significant difference between the subacute and chronic stages. Conclusions The FA values of cere-bral infarction patients change during the different stages of recovery with a certain regularity. This may be valuable for clinical treatment and prognosis.

Objective To evaluate five detection methods for the laboratory diagnosis of Clostridium difficile infection in the hospitals of USA, and explore a sensitive, specific, accuracy and rapid regimen for the early diagnosis of Clostridium difficile infection. Methods A total of 174 stool specimens submitted to the clinical microbiology laboratory for Clostridium difficile testing were separately tested by five methods including toxigenic culture (TGC), Premier Toxin A&B EIA( A/B-EIA), C. Diff Quick Chek Complete( DEIA), BD G eneOhm Cdiff assay(BD-PCR) and Laboratory-developed PCR(LD-PCR). The gold standard of TGC was used as a reference criterion, and the sensitivity, specificity, positive predictive value ( PPV )and negative predictive value (NPV) of A/B-EIA, D-EIA, BD-PCR and LD-PCR assays were determined. Results Among the 174 specimens studied, 24 were defined as true positives for Clostridium difficile infection by TGC assay, giving a positive rate of 13.8% (24/174). In comparison to the standard,the sensitivity, specificity, PPV and NPV were 62.5%, 99.3%, 93.8% and 94.3% for A/B-EIA;66.7%, 98.7%, 88.9% and 94.9% for D-EIA; 83.3%, 98.7%, 90.9% and 97.4% for BD-PCR;79.2%, 93.3%, 65.5% and 96.6% for LD-PCR. Among all tested specimens, 34 were positive by atleast one of five methods, and of which 15 were concordant by all five methods. The D-EIA results were divided into three groups depending on results of GDH and (or) toxins A/B: 18 were positive for both GDH and toxins A/B, 23 were positive for only GDH, and 133 were negative for both GDH and toxins A/B. Of 18 positive specimens by D-EIA assay, all were concordant with results of BD-PCR assay and 16 were agreement with results of TGC assay. Twenty-two of 24 positive specimens by TGC assay were included in 41 specimens that were positive for GDH. Among eight false negative specimens by D-EIA assay, four were differentiated as positive results by BD-PCR. According to the present study, the sensitivity, specificity,PPV and NPV of a two-step detection algorithm in combination with D-EIA and BD-PCR assays were 83.3%, 98.7%, 90.9% and 97.4%, respectively. Conclusions From the point of technological evaluation, BD-PCR is preferable. A two-step detection algorithm combining D-EIA with BD-PCR is proposed for the laboratory diagnosis of Clostridium difficile infection. This algorithm has demonstrated an excellent sensitivity and specificity, as well as decreased test turnaround time and test cost.

Objective To study the CT manifestations and diagnostic value of stromal tumor.Methods CT documentation of 25 stromal tumor cases confirmed by surgery and pathology were analyzed retrospectively,all cases underwent 64 row or 256 row spiral CT plain scan and enhanced scan.Results Within 25 cases,1 7 cases were gastrointestinal,of which,10 cases were found in stom-ach,1 case in duodenum,3 cases in jejunum and 3 cases in ileum;and 8 cases were extra-gastrointestinal,of which,6 cases were found in enterocoelia,1 cases in inguinal region,1 case in abdominal wall;the ratio was 2.1 ︰ 1.In 25 cases,highly malignant dan-ger level were 1 1 cases,7 cases of moderate and 7 cases of low malignant danger;Transfer occurred in 7 cases and 3 cases of postop-erative recurrence.Conclusion The volume CT has great advantages in displaying information in lesion,and has high value in loca-ting the lesion and qualitative diagnosis of disease.

BACKGROUND:In previous experiments, TiO2-xNy OBJECTIVE:To study the friction properties of orthodontic brackets coated with TiO-coated bracket has been confirmed to have excelent antibacterial properties and biological safety performance. 2-xNy METHODS: TiO film. 2-xNy film was prepared by radiofrequency magnetron sputtering on MBT bracket (0.022″). The TiO 2-x N y RESULTS AND CONCLUSION: TiO-coated brackets were analyzed by X-ray diffraction and scanning electron microscopy observations. The coefficient of static friction and coefficient of kinetic friction between the wires (0.012″, 0.014″, 0.016″) and orthodontic brackets were calculated. 2-xNy film on the bracket was of anatase structure, which was compact and had good crystalinity. Under dry condition, the coefficient of static friction and kinetic friction of the brackets coated with TiO2-xNy were less than those of ordinary brackets; under wet condition, the coefficients of static friction and kinetic friction of the brackets coated with TiO2-xNy were less than those of ordinary brackets, but the difference was not statisticaly significant. Nano-TiO2-xNy film can reduce the friction between bracket and archwire, which wil offer a novel opportunity to significantly reduce the friction during tooth movement.