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Objective:To evaluate the ability of Sysmex urine automatic analyzer UF-5000 to detect renal tubular epithelial cells, and to explore the value of detection of renal tubular epithelial cells in renal tubular injury of diabetes mellitus.Methods:Case control study. 452 urine samples were collected from the third Xiangya Third Hospital of Central South University from October 2018 to April 2019 (252 in the control group, 113 in diabetes without renal injury group and 87 in diabetes with renal injury group). All samples were detected by both UF-5000 and microscopic examination, established reference range for normal population, then contrasted the coincidence rate and uniformity of the two methods, to evaluate the ability of urine automatic analyzer UF-5000 to detect renal tubular epithelial cells, and the diagnostic value of tubular epithelial cells for renal tubular injury in diabetic patients. All statistical analyses were performed using SPSS17.0, Kappa consistency analysis, ROC curve analysis, Kruskal-Wallis test and Chi-square test were used.Results:The reference range of renal tubular epithelial cells by Sysmex urine automatic analyzer UF-5000 is 0-1.7/μl. The results of the two methods were analyzed by Kappa consistency analysis. The Kappa value was 0.699, P>0.05, which meant highly consistent. ROC curve analysis showed when cut-off value was 1.7/μl. The sensitivity, specificity and area under ROC curve were 0.791, 0.817 and 0.861 respectively. The median of renal tubular epithelial cells was 0.4/μl, 2.0/μl and 2.3/μl in the healthy control group, the diabetes without renal injury group and the diabetes with renal injury group, respectively; the positive rate of renal tubular epithelial cells in the three groups were 2.78%, 56.64% and 75.86% respectively. Compared with the control group, the median and positive rate of renal tubular epithelial cells in the diabetes without renal injury group and the diabetes with renal injury group were significant different; there was also significant difference in the positive rate of renal tubular epithelial cells between the two groups. Conclusion:Compared with the control group, the positive rate of urine renal tubular epithelial cells indiabetes without renal injury group is significantly higher, which is helpful to detect renal tubular injury, to carry out early intervention and to prolong the time of progression to chronic kidney disease.
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Objective To evaluate the diagnostic values of urinary heparin-binding protein (HBP), interleukin-6 (IL-6) and white blood cell (WBC) levels in bacterial urinary tract infection (UTI). Methods A case-control method was used. Urine of 157 cases of bacterial UTI, 61 cases of non-infection, and 40 cases of normal controls were collected in the Third Xiangya Hospital of Central South University from September 2017 to March 2018. U-HBP levels were measured in duplicate using a commercial HBP ELISA, U-IL-6 concentrations were analyzed with an up-conversion luminescence. The method of quantitative culture of bacteria was used to identify pathogenic species. Rapid dipstick tests and urinary sediment analyses were detected by FUS-2000 Urinalysis Hybrid. For continuous variables with skewed distributions, comparisons among the three groups were performed using the nonparametric Kruskal-Wallis test, and Mann-Whitney U test was used to further evaluate the difference between two groups. The Chi-square test was applied to analyze dichotomous. Receiver operating characteristic curve (ROC curve) was constructed to analyze the clinical diagnostic values of U-HBP, U-IL-6 and U-WBC for bacterial UTI. Results The levels of U-HBP in UTI group, non-UTI group and control group were 513.43 (50.45-644.40) ng/ml, 55.65 (20.43-314.55) ng/ml and 4.83 (3.28-12.63) ng/ml. The scores of U-IL-6 were 5.72 (3.84-9.02) pg/ml, 5.31 (4.31-6.39) pg/ml and 5.06 (4.56-6.18) pg/ml. The scores of U-WBC were 205 (24-754) cells/μl, 34 (13-117) cells/μl and 0 (0-0) cell/μl. There were statistically significant differences of U-HBP and U-WBC among the three groups (HU-HBP=83.192, HU-WBC=100.416, P<0.05), but no significant difference for U-IL-6 (HU-IL-6=2.585, P>0.05). The best Youden indexes of U-HBP and U-WBC diagnosing bacterial UTI were 0.475 and 0.441, respectively. The best cut-off level of U-HBP and U-WBC was 64.35 ng/ml and 119.25 cells/μl, respectively. Conclusions Testing the level of U-HBP was important for auxiliary diagnosing bacterial UTI, but testing U-IL-6 wasn't.
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Objective To evaluate the diagnostic value of the heparin-binding protein (HBP),procalcitonin (PCT),C-reactive protein (CRP),white blood cell (WBC) in respiratory tract bacterial infection.Methods 66 respiratory tract bacterial infection patients,37 respiratory tract non-bacterial infection patients and 39 control group in the Third Xiangya Hospital from October 2015 to March 2017 was selected as objects in this prospective study.The levels of HBP,PCT and CRP in blood of the objects were tested with ELESA,immunofluorescence assay,immunoturbidimetry respectively;WBC counts were taken by Sysmex XE-5000 blood analyzer.The difference among the three groups was analyzed by Student's t test,one-way ANOVA or Wilcoxon test.Receiver operating characteristic curve was utilized to analyze the diagnostic value of HBP,PCT,CRP and WBC in respiratory tract bacterial infection.Results The plasma level of HBP were 36.30 (7.78-89.36) ng/ml,5.57 (4.37-8.23) ng/ml,2.84 (1.53-6.51) ng/ml in respiratory tract bacterial infection group,respiratory tract non-bacterial infection group and control group respectively.The socre of PCT were 0.08 (0.04-0.83) ng/ml,0.09 (0.04-0.30) ng/ml,0.04 (0.03-0.08) ng/ml.The socre of CRP were 56.20 (19.33-76.23) mg/L,34.40 (2.15-83.95) mg/L,(2.20 ± 0.99) mg/L.The socre of WBC count were (10.59 ±4.58) × 109/L,8.40 (5.80-11.88) × 109/L,(6.14± 1.31) × 109/L.There were statistically significant differences in HBP scores between respiratory tract bacterial infection group and respiratory tract non-bacterial infection group or control group (Z =-4.828,P ＜0.001;Z =-5.685,P ＜ 0.001).There were no statistically significant differences in PCT,CRP and WBC scores between respiratory tract bacterial infection group and non-bacterial infection group (F =0.045,P ＞ 0.05;F =0.100,P ＞ 0.05;F =2.417,P ＞ 0.05),but significant differences between respiratory tract bacterial infection group and control group (Z =-2.881,P ＜ 0.05;Z =-6.595,P ＜ 0.001;t =6.499,P ＜ 0.001).The area under curve (AUC) of HBP,PCT,CRP and WBC diagnosing respiratory tract bacterial infection was 0.89,0.69,0.95 and 0.85 respectively.The AUC of HBP differential diagnosising was 0.80.Conclusion HBP can be used as an efficient supplementary indicator for respiratory tract bacterial infection,the differential diagnostic value is superior to PCT,CRP and WBC.
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Cell motility and chemotaxis can make important contributions to metastatic cascade. Cell motility is needed in these processes, which is driven by cycles of actin polymerization, cell adhesion and actomyosin contraction. Coordinated regulation of actin and action of dynamics would regulate metastasis and metastatic progression, reducing dissemination of tumor cells, which is very important in this process.
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Objective To study human lung adenocarcinoma cell line A-549 treated with antagonist and agonist of potassium channel how to affect metastasis of A-549 and its mechanism. Methods Invasion and migration capability of A-549 in vitro was evaluated by using transwell chamber model. Alteration of cytoskeleton was observed through immunofluorescence. Western blotting were used to detect the protein expression of Ezrin and HuR in A-549 cell lines while Glibenclamde and Pinacidil were applied to them. Results In the presence of the antagonist Glibenclamide, migration of A-549 was inhibited by (57.18±5.46)% and invasion was inhibited by (54.92±3.72)% in the transwell assay, meanwhile A-549 manifested disorder of microtubule and more orderly microfilament. And agonist of the potassium channel had an contrary effect on A-549. Ezrin and HuR protein were successfully down-regulated in A-549 treated with Glibenclamide and upregulated in A-549 treated with pinacidil. Conclusion Functional alterations of the potassium channel affects capability of migration and invision of A-549, which is associated with different expression of ezrin and HuR protein that modify cytoskeleton.