Objective To establish a HPLC method for the determination of magnolin in Xuetie Dingchuan Plaster.Methods The HPLC chromatographic condition was as follows: the analytical column was Lichrospher C8(4.6mm?250mm,5?m),the mobile phase consisted of A(acetonitrile)∶B(1.55%tetrahydrof uran-water) 34∶66,the flow rate was 1.0 mL?min-1,the detected wav elength was 278 nm,and the column temperature was 30 ℃.Results The calibr ation curve was linear(r=0.9999) in the range of 0.42～ 5.25 ?g for magnolin,the average recovery of the method was 100.50 %,with RSD 2.22 %(n=9).Conclusion The method is accurate,simple and stable,and can be used for the quality control of Xuetie Dingchuan Plaster.

Objective To investigate the expression of hypoxia inducible factor-1α(HIF-1α) and vascular endothelial growth factor C(VEGF-C) in colon carcinoma,and their relation with clinical pathological parameters and prognosis. Methods Immunohistochemistry was used to detect the expression of HIF-1α and VEGF-C in 65 tissues of colon carcinoma. Results In all cases,the expression of HIF-1α had a positive correlation with the expression of VEGF-C(r= 0.638,P＜0.01).The expressions of HIF-1α and VEGF-C had significant correlation with clinical stage and nodal metastasis(P＜0.05) ,but had no relationship with sex,age and tumor size(P＞0.05). Conclusion The expression of HIF-1α and VEGF-C was correlated with nodal metastasis, tumorigenesis and prognosis of colon/carcinoma.

Objective To elucidate the prevalence and risk factors of cardiovascular disease (CVD) in end-stage renal disease (ESRD) patients on peritoneal dialysis (PD), and to investigate the associated problems in treatment. Methods A total of 254 PD patients in our division were enrolled in this study. CVD history, laboratory measurements, examinations of carotid atherosclerosis and left ventricular hypertrophy by ultrasonography were collected and associated factors were analyzed. The median follow-up time was 49 months. Results The overall prevalence of CVD was 37% (93/254). Diabetes, longer dialysis duration, hypertfiglyceridemia, hypoalbuminemia, hypoprealbuminemia were commonly found in the patients with new CVD event. The patients without pre-existing CVD had the higher Ccr, Kt/V, D/Pr, nPCR, serum albumin level. In those with pre-existing CVD, the hypertriglyceridemia and the duration of dialysis were independent predictors of progression of CVD. Differences of LAD, LVST, LVMI and IMT were significant between with and without pre-existing CVD groups. Kaplan-Meier curves showed that the presence of CVD was the independent risk factor of survival. Alb<330 g/L, LAD>39.6 mm and peritonitis were risk factors of CVD. Conclusion The prevalence of CVD in PD patients is quite high. CVD history should be realized, dialysis adequacy should be maintained, and peritonitis should be prevented.

OBJECTIVE: Common findings are to be found from 144 different type of medical device manufacturers' audit reports which are from Jan. 2017 to Jun. 2019. Advise is to be provided for medical device manufacturers on continual improvement. METHODS: Classify and analyze the on-site audit findings from different type of medical device manufacturers. RESULTS: The frequency of findings from chapter production management, buildings and facilities, quality control are comparatively high. CONCLUSIONS The key to improve the quality management system is to cultivate the staff sense of continual improvement of quality system, improve the staff ability of finding and solving problems, encourage staff participation in quality system, fit the quality system on product realization.
Industry ; Quality Control ; Time Factors