Objective:To compare effects of APF and APF-La(NO3)3 on enamel surface layer and to probe the mechanism of combined application of APF-La(NO3)3 on deciduous molars. Methods:9 caries-free second lower molars were selected and divided randomly into two groups: APF group (n=4) and APF-La(NO3)3 group (n=5). All teeth were cut into two parts, paralleled to axis of the teeth, along the line connecting mesial buccal and lingual cusps. Mesial parts were experimental group and distal parts were control group. Spot analysis of EPMA was performed to measure concentration of F or/and La in enamel surface layers, and compare changes of concentration of F in enamel surface layers treated with APF solution and changes of concentration of F and La treated with APF-La(NO3)3 solution. Results: ①Concentrations of F in enamel surface layers increased in APF experimental group. ②Concentrations of F and La increased in deciduous teeth enamel surface layers of APF-La(NO3)3 experimental group. ③ Increment of F in cusp of deciduous molar is the same as that of pit in APF experimental group. ④ Increment of F and La in cusp of deciduous molar was the same as that of pit in APF-La(NO3)3 experimental group. Conclusion:Compared with APF, treatment by APF-La(NO3)3 can increase the concentrations of both La and F in enamel surface layer while there is no difference of increment between cusp and pit in each group. The result can provide useful data for prevention of caries in children.

T helper 17 cells (Th17) are a novel subset of CD4+ T cells that undergo differentiation from naive CD4 T cells through the activation of a key nuclear transcription factor,retinoic-acid-receptor-related orphan receptor γt (RORγt),and in the presence of multiple cytokines,such as transforming growth factorβ1 (TGF-β1),interleukin6 (IL-6),as well as IL-23.Th17 cells induce their biological effect by secreting IL-17A and other cytokines.Research has demonstrated that Th17 cells have an intimate relationship with acute/chronic transplant reactions and that Th17 cell lineages have the possibility to become the new target for treating transplant rejections.Identification of Th17 cells also provides an additional strategy for inducing immune tolerance.

Objective To observe the treatment effect and relapse prevention of cardioversion of atrial fibrillation with Wenxin granules and amiodarone. Methods Sixty patients of chronic atrial fibrillation were divided randomly into treatment of Wenxin granules and amiodarone group (group A) and treatment of simple amiodarone gorup(group B),Thirty cases in each group. All cases were treated with amiodarone by intravenous drip along with oral amiodarone. Thirty cases in group A were treated with Wenxin granules (9 grams,per day) additionally for 4 weeks. Results Patients in group A resumed normal sinus rhythm significantly higher than that in group B. The increasing relapse tendency of atrial fibrillation was higher in group B within 6 months. Conclusion Drug combination with Wenxin granules and amiodarone has better effect than simple amiodarone in the relapse prevention of cardioversion of atrial fibrillation.

Objective To study the relationship of fatty acid binding protein-2(FABP2)and apolipoprotein E(ApoE)with coronary heart disease(CHD)in type-2 diabetes mellitus(T2DM)patients.Methods FABP2 and ApoE gene polymorphisms were detected by PCR-RFLP.At the same time all CHD in T2DM patients' serum triglyceride(TG),total cholesterol(TC),high-density lipoprotein cholesterol were(HDLC),low-density lipoprotein cholesterol(LDLC)were detected.Results The T-allele frequencies of FABP2 were higher(P

OBJECTIVE To prevent the infection at intravenous injection site with peripherally inserted central catheter(PICC). METHODS The relationship between infection with sites,methods,and times of PICC placement in 160 patients was observed. RESULTS There was no correlated infection in all the patients,but family nursing might lead to infection. CONCLUSIONS Regular management and standard operation can prevent infection.Instructions of family nursing and follow-up are necessary for infection control.

Objective To study signs of ultrasonography in multiple renal arteritis (MRA) by color Doppler flow imaging(CDFI) and X-ray angiography.Methods 2-D ultrasonography and color Doppler were performed on 23 cases of MRA with 39 diseased blood vessels.The morphology and diameters of stenonsed renal arteries of the kidneys were observed respectively by 2-D ultrasonography and CDFI.CDFI was adopted to observe maximum of velocity(Vmax),minimum of velocity(Vmin),resistance index(RI),acclerate(ACC) and acclerated time(TA) of the renal arteries,and the values were compared with those by X-ray angiography and with those of the normal controls.Results MRA's renal volume and diameter were significantly different from those of controls ( P

AIM: To investigate the expression and effects of sialyl Lewis X (SLeX) on the invasion and migration of human hepatocellular carcinoma HepG2 cells.METHODS: The expression of α1,3-fucosyltransferase VII (FUT7) in HepG2 cells and L-02 cells was detected by RT-qPCR and Western blot.The SLeX expression in HepG2 cells and L-02 cells was determined by Western blot and immunocytochemical staining.The invasion and migration abilities of the treated cells were evaluated by Transwell assay.RESULTS: The expression of FUT7 and SLeX in the HepG2 cells, but not in the L-02 cells, was observed.The invasion rates of the HepG2 cells treated with SLeX monoclonal antibody at 0.05, 0.5 and 5 mg/L were significantly decreased as compared with control group (P<0.05).The migration ability of the HepG2 cells treated with SLeX monoclonal antibody at 0.05, 0.5 and 5 mg/L was also significantly reduced as compared with control group (P<0.05).The invasion rate and migratory cell number were significantly different between any 2 groups in the HepG2 cells treated with SLeX monoclonal antibody at 0.05, 0.5 and 5 mg/L (P<0.05).CONCLUSION: HepG2 cells express SLeX.SLeX is closely related to the migration and invasion abilities of the HepG2 cells.

Objective: To explore the inhibition effects of ectogenic wild type p53 cDNA(Ad wtp53) on colorectal carcinoma cell lines with different p53 gene status and search for the role of wild type p53 tumor suppressor gene in occurrenc and progress of malignant tumor. Methods: MTT process was taken to choose optimal transfection titre. Three kinds of cell lines(p53 gene deletion, mutation and nomal) were transferred by Ad wtp53 in optimal titre. The inhibition effects of these cell lines were observed and compared. Results: The best titre is 1000 MOI and p53 gene deletion cell line (THC 8908) shew the highest sensitivity. G 1 S transition period blocking effects occurred in all cell lines and G 2 M phase regulation effects were not coincidence in three colorectal cell lines. Conclusions: Recombinant adenovirus mediated wild type p53 gene observably inhibited colorectal carcinoma cell lines growth and proliferation, blocked cell cycle in G 0 /G 1 phase and displayed obvious different actions on G 2 M phase among cell lines with different p53 status.

Objective To investigate the feasibility and outcome of resection and reconstruction of hepatic artery in hilar cholangiocacinoma (HCC).Methods The data of 29 patients with HCC with hepatic artery reconstruction carried out from March 2009 to August 2013 in our center were retrospectively analyzed.23 right hepatic arteries and 6 common hepatic arteries were involved.In-situ anastomosis was carried out in 20 patients and a double anastomosis using gastrodoudenal artery grafts was carried out in 9 patients.Results There were no arterial thrombosis or other related complications on prolonged follow-up.Conclusion Hepatic artery resection and reconstruction should be carried out if the artery was invaded by a hilar cholangiocarcinoma to produce a high resection rate and a better outcome.

Objective To explore the effect and molecular mechanism of proteasome inhibitor in TNF-related apoptosis-inducing ligand (TRAIL)-induced apoptosis resistance on malignant lymphoma cells.Methods Raji cells were treated with TRAIL and proteasome inhibitor (PS-341) in vitro and the cell growth index was evaluated by MTT assay; cell cycle was analysed by flow cytometry; the protein and mRNA level of Bax were measured by Western blotting and real time RT-PCR. Results TRAIL inhibited proliferation of Raji cells at the concentration of 500 μg/L, but the inhibition rate was lower than that of the control cell:Hmy2.ciR.TRAIL arrested cell in G0/G1 phase. The Bax protein in Raji is degraded, but the Bax mRNA expression level does not change significantly .The effects of TRAIL was enhanced significantly 10 nmol/L PS-341 was added. Conclusion Raji cells are resistant in TRAIL-induced apoptosis. This effect may be related to the decrease of Bax protein. The Ubiquitin-proteasome pathway is involved in the degradation of Bax in TRAIL-treated Raji cells.