Objective To observe the influence on the sensitivity of pancreatic cancer cell line BxPC-3 to gemcitabine of silencing PAUF gene.Methods BxPC-3 cells,which overexpress PAUF,was stably transfected with PAUF-shCtrl and PAUF-shRNA to establish BxPC-3_shCtrl and BxPC-3_shPAUF cells as control and experiment group.Then the mRNA and protein expression level of PAUF in these two cell lines were detected by RT-PCR and western blot,respectively.The growth inhibition rates of these two cell lines treated with different concentrations of gemcitabine (0,3.1,6.25,12.5,25,50,100,200 nmol/L) were detected by MTT.Apoptosis rates in the cells treated with different concentrations of gemcitabine (0,75,100 nmol/L) were then observed by flow cytometry.Results The relative PAUF mRNA expression level in BxPC-3_shCtrl and BxPC-3 cells were 1.00 ± 0.06 and 0.83 ± 0.07,which were significantly high er than that in BxPC-3_shPAUF cells (0.25 ± 0.02;both P ＜ 0.05).The relative PAUF protein expression level in BxPC-3_shCtrl and BxPC-3 cells were 0.89 ± 0.07 and 0.95 ± 0.04,which were significantly high er than that in BxPC-3_shPAUF cells (0.31 ± 0.03;both P ＜ 0.05).The IC50 value of gemcitabine to BxPC-3_shCtrl cell was (22.88 ± 2.43) nmol/L,which was significantly higher than that of BxPC-3_shPAUF cells [(1.06 ± 0.02) nmol/L;P ＜ 0.05];apoptosis rate of BxPC-3_shPAUF cells treated by gemcitabine increased faster than that of BxPC-3_shCtrl cells.Conclusion PAUF silencing could greatly enhance the sensitivity of BxPC-3 cells to gemcitabine.

ObjectiveTo compare the effects of proprioceptive neuromuscular facilitation (PNF) and whole body vibration training (WBVT) on functional ankle instability (FAI). MethodsFrom May to July, 2021, 17 male FAI undergraduates from Beijing Sport University received PNF (n = 8) and WBVT (n = 9), for six weeks. They were assessed with Y-balance test, Pro-Kin, Kistler and Motion Analysis Raptor before and after invention, to observe Y-balance score, average trajectory error, kinematics and dynamics after jump-landing of affected limb. ResultsThe main effect of training was not significant for all the Y-balance score, average trajectory error, kinematics and dynamics (F < 4.090, P > 0.05). However, the interactive effect of training and time was significant for the range of motion of ankle flexion (F = 6.232, P = 0.030), and the effect size was more for PNF; it was also significant for the time arriving peak ground reaction force (left-right) after landing (F = 10.674, P = 0.008), and the time was latter for WBVT (P < 0.05). ConclusionPNF and WBVT are similarly effective on FAI.

Objective:To investigate the preoperative ascending aorta diameter in patients with acute type A aortic dissection in the Chinese population, compares and analyze the differences in preoperative blood biomarkers, and evaluate the impact of the preoperative ascending aorta diameter in this part of patients on the short-term prognosis of patients.Methods:A collection of 641 patients with acute type A aortic dissection who were enrolled in the " Acute Aortic Syndrome High-Risk Early Warning and Intervention Study" project from January 2018 to January 2020 were collected. Divide the patients into two groups (group Ⅰ<55 mm, group Ⅱ≥55 mm) according to the preventive intervention value of ascending aorta diameter recommended by the guideline for studying preoperative ascending aorta diameter difference in blood biomarkers and the influence of ascending aorta diameter on the short-term prognosis of patients. All patients had CT scans to assess the diameter of the ascending aorta before operation.Results:In this study, all patients with acute type A aortic dissection had a mean preoperative ascending aorta diameter of (46.9±9.7)mm. The preoperative ascending aorta diameter of all patients was less than 55 mm, accounted for 84.1%. Male patients were more likely to have aortic dissection than females; most patients' age was less than 60 years old. The preoperative blood inflammatory index counts were higher in the ascending aorta diameter ≥55 mm group. However, the long-term prognosis of patients with different ascending aorta diameters before surgery was not apparent in this study. The preoperative survival rate and short-term survival rate of patients with ascending aorta diameter <55 mm were higher than those of other groups, but the difference was not statistically significant.Conclusion:In patients with acute type A aortic dissection, the diameter of the ascending aorta is usually less than 55 mm. Moreover, the blood inflammatory index counts are high in the preoperative ascending aorta diameter ≥55 mm group. Meanwhile, patients with smaller ascending aorta diameter have better survival rate and short-term prognosis.

Objective    To evaluate the preoperative risk factors for acute Stanford type A aortic dissection (ASTAAD) patients in our country by collecting multi-center data. Methods    We consecutively enrolled 700 patients who underwent surgery for ASTAAD in the multi-center hospital database from January 2018 to January 2020. According to the ascending aorta size (AAS), the patients were divided into two groups: a group AAS≥55 mm and a group AAS< 55 mm. Univariate and multivariate logistic regression analyses were used to investigate the related preoperative risk factors for the onset of ASTAAD. Results    According to the exclusion criteria, a total of 621 patients were finally enrolled, including 453 males and 168 females with an average age of 48.24±11.51 years, and 509 (81.94%) patients had AAS< 55 mm. Univariate and multivariate statistical analyses showed that smoking, hypertension, preoperative cardiac troponin I, and left ventricular ejection fraction were related to the occurrence of ASTAAD. The mortality rate of the patient during hospitalization was 13.04% (81 patients). Conclusion    In clinical practice, various preoperative risk factors affect ASTAAD patients, which should be paid attention to. Comprehensive evaluation and an individualized analysis of patients and timely prevention and intervention improve patients' survival rate.