Objective To prepare and explore the pharmacokinetic parameters for ~ 99 Tc~ m -ASON-EGF in healthy rabbits. Methods ~ 99 Tc~ m -ASON-EGF was prepared according to previous methods and its changes of concentration in blood were measured by radioactivity counts per minute. The experimental data were dealt with by 3p97 software and its true compartment model was estimated by AIC value, R~ 2 value, the 1/c and F test. Subsequently, its half-life of distribution (T_ 1/2 ?), half-life of elimination (T_ 1/2 ?), central compartment volume of distribution (Vc), total apparent volume of distribution (Vd) and total rate of clearance (CL) were calculated by the software. Finally, the binding rate of plasma protein was determined by trichloroacetic acid precipitation. Results The best model of ~ 99 Tc~ m -ASON-EGF in vivo was two-compartment model and its T_ 1/2 ?, T_ 1/2 ?, Vc, Vd and CL were 5.28 min, 89.23 min, 67.8 ml, 915.6 ml and 7.1 ml/min respectively. After being incubated with fresh plasma for 1.5 h, its binding rate was 10.69%. Conclusion Its process of transportation in healthy rabbits is fitted to two-compartment model and the pharmacokinetic properties are desirable.

Objective To explore the correlations between Annexin A1 protein expression and clinicopathological character-istics in carcinoma of papillary thyroid.Methods The different expressions of annexin A1 in papillary thyroid tissue and para-cari-noma tissue were investigated by immunohistochemistry.Results Among 69 samples tissues of papillary thyriod carcinoma,the positive rate of annexin A1 was higher than that of 69 para-carcinoma tissues(88.41%vs .8.69%),there was a significant difference (P <0.05).Furthermore,the expression of annexin A1 was correlation with the lymph node metastasis and tumor size,which was higher in ≥1 cm diameter of tumor(P <0.05).Conclusion High AnnexinA1 positive expression in papillary thyroid cancer tissues is associated with tumor malignant progression,which might be a valuable predictor and potential target for the diagnosis and treat-ment of papillary thyroid carcinoma.

Objective:To evaluate the value of pretreatment 18F-fluorodeoxyglucose (FDG) PET/CT-based heterogeneity for early prediction of targeted therapy outcome in patients with human epidermal growth factor receptor 2 (HER2) positive metastatic breast cancer. Methods:From May 2012 to April 2018, 29 patients (all females, median age: 52 (32-69) years) who had HER2 positive metastatic breast cancer and underwent pretreatment 18F-FDG PET/CT in Fudan University Shanghai Cancer Center were retrospectively enrolled. All patients received trastuzumab as first-line treatment and were followed up for 6-87 (median time: 35) months. The relations between clinicopathologic parameters or PET/CT-based parameters and progression-free survival (PFS)/overall survival (OS) were analyzed with Cox univariate analysis. The parameters with P≤0.01 were further analyzed with Cox multivariate analysis. Optimal cut-off values were determined by time-dependent receiver operating characteristic (ROC) curve analysis. The survival analyses were estimated by Kaplan-Meier method and log-rank test. Results:The median OS of the 29 patients was 30 (6-83) months, and the median PFS was 10 (2-29) months. The PET/CT-based heterogeneity index(HI), including the maximum standardized uptake value (SUV max) ratio (SUV max-R; hazard ratio ( HR)=8.6, 95% CI: 2.7-27.8, P<0.001), the mean standardized uptake value (SUV mean)-2.5 (the cut-off value of standardized uptake value (SUV)=2.5) ratio (SUV mean-2.5-R; HR=2.6, 95% CI: 1.2-5.9, P=0.020), the metabolic tumor volume(MTV)-2.5 ratio(MTV-2.5-R; HR=2.4, 95% CI: 1.1-5.2, P=0.030), and the total lesion glycolysis(TLG)-2.5 ratio(TLG-2.5-R; HR=3.2, 95% CI: 1.4-7.4, P=0.008) of the lesion with the highest SUV max to that with the lowest SUV max, were significantly associated with PFS. None of the parameters was significantly associated with OS (all P>0.05). Multivariate analysis showed that the SUV max-R was the only independent predictor for PFS ( HR=6.8, 95% CI: 1.8-26.1, P<0.01). Area under the ROC curve for SUV max-R was 0.747. With a cut-off value of 1.8, SUV max-R could effectively distinguish the benefit from non-benefit population treated with trastuzumab (15.0 vs 7.0 months; χ2=18.68, P<0.01). Conclusion:Pretreatment 18F-FDG PET/CT-based HI has potential value for early prediction of first-line trastuzumab treatment outcome in patients with HER2 positive metastatic breast cancer.

Objective To explore the application effect of the multidisciplinary collaborations in control of peritoneal dialysis patients with hypertension. Methods A total of 220 cases of peritoneal dialysis patients divided into experimental group and control group (each group had 110 cases) according to the random number table. In which, the control group received routine capacity control and health education with a total of 105 patients finished the study. The experimental group received of multidisciplinary collaborations on the basis of routine capacity control and health education with a total of 107 patients finished the study. Observe changes with knowledge of drugs, medication compliance, self-management behavior and blood pressure of patients before and after the intervention respectively. Results In experimental group,the scores of drug knowledge, medication compliance and self-management behaviors were (0.93 ± 0.49), 0.00 (0.00, 0.25), (2.69 ± 0.25) points before the intervention, 6 months after the intervention were (1.17 ± 0.54), 0.25 (0.00, 0.50), (2.86 ± 0.15) points, the difference between the groups was statistically significant (t=38.60, Z=4.34, t= 2.45, P < 0.01 or 0.05). In control group,the scores of drug knowledge, medication compliance and self-management behaviors were (0.87 ± 0.45), 0.00 (0.00, 0.25), (2.64 ± 0.27) points before the intervention, 6 months after the intervention were (0.89 ± 0.43), 0.00 (0.00, 0.38), (2.73 ± 0.27) points, there was no significant difference between drug knowledge and medication compliance (t=0.44, Z=1.83, P > 0.05), there were statistically significant differences in self-management behavior (t=6.23, P<0.01);there was no difference between the statistical significance between the 2 groups before intervention (t=1.02, Z=1.46, t=1.32, P > 0.05); there was significant difference between the 2 groups after intervention (t=4.11, Z=4.03, t=4.34, P<0.01). Patients in the experimental group with the systolic and diastolic blood pressure were (147.11 ± 14.31), (90.16 ± 13.02) mmHg (1 mmHg=0.133 kPa) respectively, before the intervention; 6 months after the intervention were (139.39 ± 17.05), (83.76 ± 12.52) mmHg respectively, the difference was statistically significant (t=3.59, 2.92, P<0.01). The control group before intervention were (149.56 ± 18.11), (93.56 ± 15.09) mmHg respectively, 6 months after the intervention were (145.14±20.50), (88.14±10.88) mmHg respectively, the difference was statistically significant (t=2.02, 2.72, P<0.05 or 0.01);there was no significant difference between the two groups before intervention (t=1.09, 1.82, P>0.05);6 months after the intervention there was significant difference between the 2 groups (t=2.22, 2.72, P < 0.05 or 0.01). Conclusions Multidisciplinary collaborations have a significant role in patients with peritoneal dialysis, especially in blood pressure control, medication compliance and self-management behavior.

Objective To study the relationship between the fbxl 20 gene、E-cadherin gene and the clinocopathologic features ,respectively , and the correlation about the fbxl 20 and the set gene .Methods The mRNA expression level of fbxl 20 and E-cadherin gene in 50 pairs of human colorectal adenocarcinoma tissues and matched normal tissues were detected by RT -PCR.Results The mRNA expression level of fbxl 20 gene in tumor tissues were significantly increased than that in normal tissues (0.479 ±0.141 vs.0.296 ±0.121,P=0.001),while the E-cadherin were decreased (0.440 ±0.026 vs.0.741 ±0.059,P=0.000).There was no found on the correlation between the mRNA expression level of fbxl 20 and the E-cadherin gene in the 50 tumor tissues(r=-0.165,P=0.251).However,the E-cadherin expressed level was negatively correlated with the fbxl 20 expressed level in the lower differentiation degree、in the high differentiation degree and the Duke′s D tumor tissues(r=-0.600,P=0.008;r=-0.784,P=0.017;r=-0.643,P=0.032).Conclusions The decreased mRNA expression level of E -cadherin in tumor tissues are largely due to the increased fbxl 20 gene expressed level ,which is related with the high mobility and invasion ability of the advanced tumor .

Objective To analyze Blimp1 expression difference in the latent and active of tuberculosis patients and the healthy , and assess possibility of as the new tuberculosis diagnostics molecules .Methods 60 patients with active TB (active tuberculosis group) ,50 participants with latent(latent tuberculosis group) ,and 50 healthy people(control group) were enrolled separately .Using fluorescence quantitative polymerase chain reaction were used to determin Blimp 1 mRNA expression in the peripheral blood mono-nuclear cells .Results Blimp1 mRNA expression level of the active tuberculosis group was 15 .35 times than the control group ,and 2 .21 times than the latent tuberculosis group ,the difference was statistically significant (P<0 .05) .Conclusion Blimp1 gene proba-bly plays a role in the immune response to tuberculosis .it provides new ideas for the laboratory diagnosis of tuberculosis and new clues for further exploring the pathogenesis mechanism of tuberculosis .

Objective:To explore the experience and learning curve of single-line suspension suction rod-assisted hybrid cavity-building thyroid surgery via the oral vestibular approach.Methods:Clinical data of 138 patients undergoing single-line suspension suction rod-assisted hybrid cavity-building thyroid surgery via oral vestibular approach from Sep. 2019 to Dec. 2021 in the Department of Thyroid and Breast Surgery of Affiliated Hospital of North Sichuan Medical College were retrospectively analyzed. The cumulative sum (CUSUM) method and best-fit curve analysis were used to compare the differences in each index such as operative time, intraoperative bleeding, number of lymph nodes cleared in the central region and postoperative related complications at various stages of the learning curve.Results:All 138 patients underwent single-line suspension rod-assisted hybrid cavity-building thyroid surgery via the oral vestibular approach, and one patient was converted to open surgery due to large intraoperative bleeding in the mass. There were 14 males and 124 females, mean age (36.07±8.49) years (20-55 years), thyroid tumor size (7.74±6.49) mm (2.4-50mm), 5 cases underwent Subtotal thyroidectomy, 129 cases underwent Unilateral lobectomy + lymph node dissection in the middle region, and 4 cases total thyroidectomy + central zone lymph node dissection. The number of surgical cases corresponding to the apex of the CUSUM learning curve was 45, and the learning curve was divided into two stages: the learning improvement stage (1-45 cases) and the mastery stage (46-138 cases). The operative time, intraoperative bleeding, postoperative hospital stay, and chin numbness were all lower in the proficiency period than in the learning and training period ( P<0.05), and the number of lymph nodes cleared in the central region was larger than that in the learning and improvement stage ( P<0.05), while the differences in other indexes between the two stages were not statistically significant ( P>0.05) . Conclusion:The single-line suspension suction rod-assisted hybrid cavity-building thyroid surgery via the oral vestibular approach has clinical application value and is worth promoting, and the number of surgical cases to be accumulated to master this technique is 45.

Objective: To study the clinical value of serum cystatin C, neutrophil gelatinase-associated lipocalin (NGAL) and matrix metalloproteinase (MMP)-9/NGAL-1 measurements for early diagnosis of acute kidney injury (AKI) in patients with acute-on-chronic liver failure (ACLF). Methods: This study included 102 patients with hepatitis B virus related ACLF and 31 patients with chronic hepatitis B (CHB) were enrolled as controls. Biomarkers including serum cystatin C, NGAL and MMP-9/NGAL-1 were measured twice in the patients with ACLF at admission and at the time progressed to AKI and once in the controls. Results: In patients with ACLF, serum cystatin C levels was higher than that of the CHB control (t=3.609, P=0.000), whereas NGAL and MMP-9/NGAL-1 levels were lower in patients with ACLF than that of CHB controls (t=3.016, P=0.003; t=7.514, P=0.000, respectively). Thirty-three patients (32.4%) progressed to AKI during hospitalization period. In AKI group of the patients serum cystatin C levels was higher than that of non-AKI group of the patents (t=4.543, P=0.000). MMP-9/ NGAL-1 and NGAL levels were not different in patients with and without AKI (t=0.905, P=0.368; t=0.061, P=0.952). Serum cystatin C in patients with mild AKI (serum creatinine<1.5 mg/dl) and AKI serum creatinine>1.5 mg/dl were 33.59± 9.19 ng/ml and 43.32±9.02 ng/ml respectively. That was higher than that of non-AKI patients (27.94±7.93 ng/ml, P=0.022, 0.000, respectively). Serum cystatin C was the independent risk factors associated with development of AKI by a multivariate logistic regression in patients with ACLF. Conclusions Serum cystatin C measurement may contribute to more earlier diagnosis of AKI even in patients with S. creatinine<1.5 mg/dl. NGAL and MMP-9/NGAL-1 may be the biomarker of progress for ACLF.