Objective To investigate the antigenicity of foreign antigen in recombinant vaccinia virus (VACV) after elimination of B8R,and provide help to improve the efficacy of VACV-based vaccines,and provide guidance for vaccine design.Methods Transfer vector pSC11-OVA was generated,and OVAgene was in,rted into VACV with B8R deletion.The biological characteristics of recombinant VACV was investigated in vitro,and the immune responses against OVA were tested in vivo.Results The plague phenotypes and growth of wcombinant VACV and its parental strains were essentially identical.Cellular immuneresponse against OVA was augmented in mice infected with B8R-deleted recombinant VACV when comparedwith those infected with B8R-intact recombinant VACV.Conclusion Deletion of B8R and insertion of OVAdoes not affect the biological characteristics of VACV.Immunogenicity of exogenous target antigens can beimproved in VACV with B8R deficiency.Deletion of dominant epitopes may provide a vector with more efficiency for vaccines and gene therapy.

This study was aimed to explore clinical functions of consensus-based clinical practice guidelines (CB CPGs) in traditional Chinese medicine (TCM). Under the guidance of the State Administration of TCM, 42 TCM hospitals in China had conducted a questionnaire survey for 73 CB CPGs and 2993 questionnaires had been included and analyzed. According to the category of good, general and bad, the proportion of the good in improving safety performance was 69.43%, controlling cost was 58.57%, regulating medical behavior was 55.50%, improving clinical effectiveness was 46.74%. It was concluded that the CB CPGs had played a good role in improving safety performance and controlling cost in TCM clinical practice.

Objective:To explore the associations of urinary retinol binding protein (RBP) and β 2-microglobulin (β 2-MG) with urinary albumin to creatinine ratio (UACR) and renal function in hospitalized patients with type 2 diabetes mellitus (T2DM). Methods:A total of 1 030 Chinese patients with T2DM were included in this study. The subjects were divided into the UACR normal group (<30 mg/g), microalbuminuria group (30-300 mg/g) and macroalbuminuria group (>300 mg/g). Patients with normal UACR were further divided into two groups according to the estimated glomerular filtration rate (eGFR): the eGFR low group (<90 ml·min -1·1.73m -2) and the normal eGFR group (≥90 ml·min -1·1.73m -2). Urine RBP and β 2-MG levels among the groups were compared. Multiple linear regression analyses were applied to evaluate risk factors of urine RBP and β 2-MG. Results:In all patients ( n=1 030), urine RBP and β 2-MG increased gradually with the increase of UACR across the three groups, the proportions of abnormal urine RBP (>0.7 mg/L) and β 2-MG (>370 μg/L) in these groups were 3.8%, 8.5%, 39.0% ( P<0.001), and 12.9%, 26.7%, 46.8% ( P<0.001), respectively. In the UACR normal group ( n=788), 12.2% of the patients were with eGFR<90 ml·min -1·1.73m -2. The proportion of abnormal β 2-MG (>370 μg/L) was higher in the eGFR low group than that in the eGFR normal group (29.2% vs. 10.7%, P<0.001). Multivariate linear stepwise regression analyses were performed using natural logarithm of urine RBP or β 2-MG as dependent variable, and showed that urine RBP was independently associated with UACR ( β=0.0005, P<0.001), serum creatinine ( β=0.006, P<0.001) and glycosylated hemoglobin A1c ( β=0.050, P=0.001), and β 2-MG was independently correlated with UACR ( β=0.000 4, P<0.001), serum creatinine ( β=0.011, P<0.001), systolic blood pressure ( β=0.005, P=0.031) and fasting blood-glucose ( β=0.027, P=0.046). Conclusions:Urine RBP and β 2-MG are positively associated with high UACR and impaired renal function in T2DM patients, and these changes could occur before UACR and eGFR turned out to be abnormal. It is recommended that urine RBP and β 2-MG be detected as early as possible to identify diabetic kidney disease in patients with normal UACR and eGFR.

Objective:To assess the clinical value of helium-free magnetocardiography(MCG) in the diagnosis of coronary artery disease(CAD).Methods:A total of 213 patients with suspected CAD undergoing MCG in Beijing Anzhen Hospital were enrolled in the study. All patients underwent coronary CT angiography/invasive coronary angiography(CCTA/ICA) within 48 hours after MCG scanning. The parameters of MCG, including magnetic field multipolarization, magnetic field unipolarization, T-wave flattened, change in magnetic field distribution at TT segment, abnormal T-peak amplitude ration of maximum to minimum, significant movement of poles, magnetic field angle deviation and abnormal distribution of positive pole were used for the evaluation of the stenosis of coronary arteries.Results:Among 213 patients, MCG scanning was completed in 193 cases(90.6%), while 20 cases were excluded for various reasons. The CCTA/ICA results were taken as gold standard, the total coincidence rate of MCG with the degree of stenosis was 88.60%(95% CI: 83.25%-92.72%), the sensitivity and specificity of MCG in the diagnosis of CAD was 89.63%(95% CI: 83.21%-94.21%) and 88.23%(95% CI:78.12%-94.78%), respectively; the positive and negative predictive value were 93.80%(95% CI:88.72%-96.68%) and 81.08%(95% CI:72.15%-87.64%), respectively. Conclusion:MCG is highly accurate in the diagnosis of CAD, it may be widely used clinically as an non-invasive method free of radiation or contrast agent.

Objective:To compare the imaging quality and metabolic quantitative parameters of pulmonary nodules between Q. Flex whole information five-dimensional (5D) and conventional three-dimensional (3D) PET/CT imaging for clinical evaluation.Methods:Fifty-four patients (30 males, 24 females, age: 60(42, 75) years; 78 solid pulmonary nodules (maximum diameter≤3 cm) with abnormal uptake of 18F-FDG) from Tianjin Cancer Hospital Airport Hospital between June 2022 and August 2022 were enrolled in this retrospective study. All patients underwent 5D scanning and 3D, 5D reconstruction. Image quality scores, signal-to-noise ratio (SNR), SUV max, SUV mean and metabolic tumor volume (MTV) of pulmonary nodules of 5D group and 3D group were evaluated and compared with χ2 test and Wilcoxon signed rank test. Correlation of quantitative parameters between 2 groups were analyzed by using Spearman rank correlation analysis. Results:Thirty-five of 78(45%) pulmonary nodules with image quality score≥4 were found in 5D group, which were more than those in 3D group (22/78(28%); χ2=4.67, P=0.031). Meanwhile, SNR, SUV max, SUV mean, and MTV were significantly positively correlated between the 2 groups ( rs values: 0.86, 0.86, 0.85, and 0.95, all P<0.001). SNR, SUV max and SUV mean of pulmonary nodules in 5D group were significantly higher than those in 3D group, which were 37.46(18.42, 62.00) vs 32.72(16.97, 54.76) ( z=-4.07, P<0.001), 9.71(5.48, 13.82) vs 8.96(4.82, 12.63) ( z=-3.05, P<0.001) and 6.30(3.39, 8.94) vs 5.61(2.99, 7.63)( z=-4.07, P<0.001) respectively. MTV of pulmonary nodules in 5D group was significantly lower than that in 3D group, which was 1.72(0.66, 2.74) cm 3vs 1.98(1.06, 4.63) cm 3 ( z=-7.13, P<0.001). Quantitative parameters of lower lung field and nodules with maximum diameters of >10 mm and ≤20 mm based on 5D scanning changed most significantly compared with those based on 3D scanning ( z values: from -5.23 to -2.48, all P<0.05). Conclusion:Q. Flex 5D PET significantly improves the quantitative accuracy of SUV and MTV of pulmonary nodules, and the improvement of image quality is substantial without increasing the radiation dose, which has clinical practical value.