Objective To evaluate the clinical effect of fluoride agents in prevention of caries in preschool 4 to 5 years old children.Methods 700 kindergartens 4 -5 years old children were selected to conduct prevention study with the agree of guardian.The children were randomly divided into observation group and control group. 350 preschool children in the control group received regular oral health measures and fluoride foam treatment every six months.350 preschool children in the observation group received fluoride products every six months on the basis of the control group.After two years study,the deciduous caries and caries rate of the two groups were analyzed.Results After prevention of dental caries 24 months,the prevalence of dental caries and caries of deciduous teeth surface in the observation group significantly reduced,and were significantly lower than the control group ( observation group:caries prevalence 11.3%,caries mean 0.85;control group:caries prevalence 36.1%,caries mean 1.77),the deciduous caries rate and the number of surface caries between the two groups had statistically significant differences (χ2 =4.339 1,3.016 8,all P<0.05).Conclusion Child deciduous dental caries in China is still at a relatively high inci-dence of disease,regular use of fluoride foam and fluoride products namely fluor protector can significantly prevent dental caries,oral health measures than on a regular basis is more effective,and significantly reduce deciduous caries among children,protection of children's oral health,and it is worth further clinical application.

Objective:To observe the effect of Tiaozhi granule combined with rosuvastatin calcium tablets in the treatment of phlegm and blood stasis syndrome of hyperlipidemia. Methods:A total of 108 patients with hyperlipidemia who met the inclusion criteria in our hospital from March 2016 to December 2017 were recruited and randomly divided into 2 groups with 54 patients in each group. The control group took rosuvastatin calcium tablets orally, and the observation group tookTiaozhi granule on the basis of the control group. Both groups received continuous treatment for 3 months. TCM symptoms were scored, and serum TG, TC, LDL-C and HDL-C levels were detected by automatic biochemical analyzer. The Homocysteine (Hcy) levels were detected by chemiluminescence, the Intercellular adhesion molecule-1 (ICAM-1) levels were detected by ELISA, the endothelin (ET) levels were determined by radio-immunoassay, and the NO levels were determined by nitrate reductase. The Intima-media thickness (IMT) of carotid artery was determined by color doppler ultrasound imaging, and the clinical efficacy was evaluated.Results:The total effective rate was 92.6% (50/54) in the observation group and 77.8% (42/54) in the control group, and the difference between the two groups was statistically significant ( χ2=4.696, P=0.030). After the treatment, the scores of vertigo, chest tightness, sputum and limb anesthesia in the observation group were significantly lower than those in the control group ( t value were 3.630, 4.035, 3.184, 5.372, respectively, all Ps<0.01). Serum levels of TG, TC and LDL-C in the observation group were significantly lower than those of the control group ( t value were 6.073, 3.159, 5.020, respectively, all Ps<0.01), and HDL-C levels were significantly higher than those of the control group ( t=7.120, P<0.05). After the treatment, IMT (1.64 ± 0.17 mm vs. 2.35 ± 0.08 mm, t=-15.928) in the observation group was significantly lower than that of the control group ( P<0.01). After the treatment, the serum levels of Hcy, ICAM-1 and ET in the observation group were significantly lower than that of the control group ( t value were 5.346, 14.281, 19.028, respectively, all Ps<0.01). The NO level was significantly higher than that of the control group ( t=13.035, P<0.01). Conclusions:Tiaozhi granule combined with rosuvastatin calcium tablets can improve the disorder of lipid metabolism in patients with hyperlipidemia, reduce IMT and improve clinical efficacy.

Purpose: 5-Fluorouracil (5-Fu) is used as a conventional chemotherapy drug in chemotherapy forpatients with advanced colorectal cancer, but many patients still suffer from treatment failuredue to 5-Fu resistance. Emerging observations revealed the important role of chemokine(C-X-C motif) ligand 13 (CXCL-13) in tumor microenvironment and its relationship with prognosisin patients with colorectal cancer. This study is designed to reveal the important roleof CXCL-13 in causing colorectal cancer resistance to 5-Fu. Materials and Methods: CXCL-13 levels of patient's serum or cell culture supernatants were measured separatelyby enzyme-linked immunosorbent assay. In cell assays, cell viability is detected by Cell CountingKit-8. Therefore, the recombinant human CXCL-13 was used to simulate its high expressionin cells while its antibody and siRNA were used to reduce CXCL-13 expression in cells. Results: In this study, we demonstrated that CXCL-13 is associated with 5-Fu resistance by culturemedium exchange experiments and cytokine arrays of colorectal cancer resistant and nonresistantcells. Clinical studies showed that CXCL-13 is highly expressed in the serum of5-Fu–resistant patients. High levels of serum CXCL-13 also predict a worse clinical outcome.The addition of recombinant CXCL-13 cytokine resulted in 5-Fu resistance, while its antibodyovercame 5-Fu resistance, and knockdown of CXCL-13 expression by siRNA also reduced5-Fu resistance, which can be saved by added recombination CXCL-13. Conclusion These results not only identify a CXCL-13 mediated 5-Fu resistance mechanism but alsoprovide a novel target for 5-Fu–resistant colorectal cancer in prevention and treatmentstrategies.