BACKGROUND:With the consumption of acidic beverages, dental erosion becomes more serious. Erosion is related to direct loss of dental hard tissue, and causes dental over-abrasion, thus great threatening the dental health.
OBJECTIVE:To review the research work on the erosion of human teeth, erosion prevention, and teeth remineralization.
METHODS:A computer-based online retrieval of CNKI, Elsevier and Wiley databases between 1990 and 2013 was performed for articles abut human teeth erosion, erosion prevention and teeth remineralization. After repeated or old literatures were excluded, 58 literatures were included in the analysis.
RESULTS AND CONCLUSION:Current studies on dental erosion included three aspects, firstly, clinical observation of the symptoms and cause of dental erosion;secondly, the erosiveness of common acidic agents;and thirdly, the prevention of dental erosion. Many researchers focused on the prevention of dental erosion. It was suggested that dental erosion could be prevented through adjusting and control ing oral environment, enhancing the erosiveness of acidic beverages, and increasing the anti-erosion capacity of teeth. It should be noted that tooth erosion and friction/wear often occur simultaneously in the mouth. Therefore, future research should pay attention to the interaction mechanism of erosion, friction and wear of human teeth.

OBJECTIVE:To systematically evaluate the effectiveness of probiotics in adjunctive prevention and treatment of chemotherapy-induced diarrhea(CID),and to provide evidence-based reference in the clinic. METHODS:All relevant randomized controlled trials (RCTs) of probiotics in adjunctive prevention and treatment of CID were collected by searching EMBase,Co-chrane library,PubMed,CJFD,VIP,Wanfang databases and CBM. Meta-analysis were performed with Rev Man 5.2 software af-ter data extraction and quality evaluation by Cochrane Hand book 5.0risk-bias assessment tool. RESULTS:10 RCTs were includ-ed,involving 871 patients. The results of Meta-analysis showed that addition of probiotics on the basis of conventional symptomatic therapy significantly reduced the total rate of diarrhea in cancer patients [OR=0.31,95%CI(0.20,0.49),P<0.001] and Ⅲ-Ⅳ diar-rhea rate[OR=0.09,95%CI(0.03,0.24),P<0.001],improved overall response rate [OR=4.16,95%CI(2.40,7.23),P<0.001] and complete remission rate [OR=2.55,95%CI(1.66,3.90),P<0.001],with statistical significance. The probiotics had little effect onⅠ-Ⅱlevel diarrhea rate[OR=0.86,95%CI(0.48,1.56),P=0.62] and partial remission rate[OR=1.00,95%CI(0.67,1.50),P=1.00],with statistical significance. CONCLUSIONS:The use of probiotics before chemotherapy can effectively prevent the occur-rence of severe CID in cancer patients;in the treatment of CID,the combination of probiotics can also improve therapeutic effica-cy of conventional symptomatic treatment.

OBJECTIVE To investigate thechanges and clinical significance of serum Nesfatin-1 in patients with obstructive sleep apnea hypopnea syndrome(OSAHS) and type 2 diabetes mellitus (T2DM).METHODS 25 OSAHS cases who visited the department of otolaryngology, pneumology department, endocrinology department, physical examination center and sleep monitoring room from December 2014 to April 2015 were assigned as OSAHS group, and 25 patients with OSAHS and T2DM as OSAHS combination T2DM group, and 25 other patients as control group. All patient were took polysomnography, and the height, waist, neck circumference and BMI with all subjects were recorded. The serum Nesfatin-1 and fast blood glucose levels of all patients were measured.RESULTS The gender, age, height, waist and neck circumference had no statistical difference among all groups. The height and BMI in OSAHS group and OSAHS combination T2DM group were statistically significant difference compared with the control group (P<0.05); the FBG in OSAHS combination T2DM group and OSAHS group were significantly higher than that of the control group, and the FBG in OSAHS combination T2DM group were significantly higher than that of the OSAHS group, with statistically significant(P<0.05); The AHI in OSAHS combination T2DM group were significantly higher than that of the OSAHS group, with statistically significant(P<0.05); the serum Nesfatin-1 in OSAHS combination T2DM group and OSAHS group were significantly higher than that of the control group, with statistically significant(P<0.05); FBG, AHI and Nesfatin-1 were positively correlated with each other.CONCLUSION The serum Nesfatin-1 in patients with OSAHS combination T2DM are in a high level.

Using high pressure homogenization method combined with spray-drying, budesonide-loaded chitosan microparticles were prepared and the in vitro release profile was investigated. The microparticles were then blended with lactose using a vortex mixer, influence of mixing speed, mixing time on drug recovery rate and content homogeneity were investigated. Meanwhile, influence of lactose content on drug recovery rate, content homogeneity, powder flowability and in vitro deposition were studied. It turned out that budesonide was released from the microparicles in a sustained manner, with fine particle fraction as high as 46.0%, but the powder flowability was poor. After blending with 10 times of lactose, the drug recovery rate was 96.5%, with relative standard deviation of drug content 2.5%, and fine particle fraction of the formulation increased to 59.6% with good flowability. It's demonstrated that using a vortex mixer, budesonide sustained-release dry powder for inhalation with good recovery and content homogeneity could be prepared, the formulation had good flowability and was suitable for pulmonary inhaling.
Administration, Inhalation ; Budesonide ; chemistry ; Chemistry, Pharmaceutical ; Chitosan ; Delayed-Action Preparations ; chemistry ; Drug Carriers ; Lactose ; chemistry ; Particle Size ; Powders

The paper introduces the current situation of hospital operation index statistics,explores the design of hospital operation index set based on the standards,an index system with 3-layer architecture based on the data platform and the application modules of the index set.The development and application of this system ensures the consistent calculation,highly efficient utilization and shared reuse of statistical indexes and makes the hospital data services more orderly,efficient and accurate.

Objective To investigate the clinical significance of CD14+HLA-G+ monocytes in pe-ripheral blood and the soluble form of HLA-G ( sHLA-G ) in plasma among patients with gastric cancer ( GC) . Methods Blood samples were collected from 135 patients with gastric cancer ( GC group) , 150 pa-tients with chronic gastritis ( CG group) and 80 healthy controls ( HC group) . Flow cytometry analysis and ELISA were used to detect the percentages of CD14+HLA-G+ monocytes in peripheral blood samples, the concentrations of sHLA-G in plasma samples and the levels of alpha fetoprotein (AFP), cacino-embryonic antigen ( CEA) , CA19-9 and CA125 in serum samples. Mann-Whitney U test was performed to analyze the differences between different groups. The feasibility of using CD14+HLA-G+ monocytes, sHLA-G, AFP, CEA, CA19-9 and CA125 as potential biomarkers to differentiate patients with GC from those with CG or healthy subjects was assessed by using receiver operating characteristic ( ROC ) curve analysis. Results The median percentages of CD14+HLA-G+ monocytes in subjects from GC, CG and HC groups were 18. 6% (12. 1%-26. 7%), 7. 3% (4. 2%-11. 0%) and 4. 6% (3. 6%-6. 3%), respectively. The percentages of CD14+HLA-G+monocytes in the peripheral blood of patients with GC were significantly higher than those in patients with CG and healthy subjects (P<0. 001). The concentrations of sHLA-G in plasma samples collected from patients with GC [(100. 6±61. 3) U/ml) were significantly higher than those in pa-tients with CG [(59.5±19. 9) U/ml) and healthy subjects [(45. 8±23. 3) U/ml] (P<0. 001). ROC curve analysis showed that in terms of GC diagnosis, the area under ROC curve ( AUC) , cutoff value, sensi-tivity and specificity for CD14+HLA-G+monocytes and sHLA-G in plasma were 0. 893 and 0. 720, 12% and 85 U/mL, 75. 8% and 50. 5%, 86. 7% and 95. 9% (P<0. 001), respectively, which indicated that CD14+HLA-G+ monocytes and sHLA-G were better than AFP, CEA, CA19-9 and CA125 in differentiating GC from CG and HC. Moreover, the multivariate logistic regression analysis revealed that the CD14+HLA-G+ monocytes, sHLA-G in plasma as well as CA19-9 and CA125 in serum were positively correlated with the risk of GC after excluding the differences caused by age and gender factors. Conclusion The levels of CD14+HLA-G+ monocytes in peripheral blood and sHLA-G in plasma increased dramatically in patients with gastric cancer, which suggested that CD14+HLA-G+monocytes and sHLA-G might be risk factors for GC and could be used as potential biomarkers for the diagnosis of GC.

Through an introduction to the importance of medical ethics education and the status quo, this paper discusses how to better combine the medical ethics education with medical students′medical practices. It puts for-ward some suggestions from the institutional arrangements, personnel allocation, and publicitymethods. The ulti-mate goal is that the medical students could get more effective, continue and integration medical ethics education in the process of medical practice.

Objective To introduce the therapeutic measure of preventing the first web contracture after hand crush injury in early stage. Methods Three types were divided according to the traumatic condition in 57 cases: closed injury, open injury and with blood vessel of thumb or fingers injury, and used different method such as closing injury postpone, opening the first web by kischner wire or mini-external fixation splint and covered by local or island flap to cure each type in primary and early stage, after 6 months, measured the width and angle of the first web. Results Forty-one cases were followed-up after 3 months - 2 years,abduction and opposition of the thumbs were fine, the average of width and angle of the first web were (5.89 ± 0.58)cm and (87.85 ± 6.03)°. Conclusion The key points of preventing the first web contracture after crush injury are opening the first web that being covered by local flap and to use splint in primary stage.

Objective To investigate the characteristics of immunophenotyping and clinical significance of MRD analysis in MM patients. Methods Multi-parameter flow cytometry was applied to analyze the immunophenotyping of malignant plasma cells from 172 MM patients, and normal plasma cells from 16 healthy individuals. MRD was analyzed in 32 MM patients with remission. Meanwhile, the effects of MRD status on the disease relapse and patient disease free survival ( DFS ) time was evaluated by following up patients. Results The immunophenotyping of normal plasma cells were CD38, CD138, CD19 and CD45 positive, while the predominant phenotype of MM cells were CD+38( 100.0% ), CD+138( 100.0% ), CD-19 ( 167/172, 97. 1% ), CD+56( 152/172, 88.4% ) and CD-45( 166/172, 96. 5% ). The characteristic markers for MM cells were CD+38, CD-138, CD-19, CD-45 and CD+56. MRD analysis revealed that, among 32 MM patients with remission, 14 patients were MRD negative and 18 patients were MRD positive. During follow-up of 2 to 16 months, the relapse rate in MRD negative patients was significantly lower ( 4/14, 28.6% ) than that of MRD positive patients ( 13/18, 72. 2% ;χ2 =6. 03, P ＜0. 05 ). Furthermore, the DFS time was significantly longer in MRD negative patients[ 16. 23( 10. 37-21.62 )months ] than that of the MRD positive patients [ 10. 07( 3. 79-16. 20 )months,χ2 =7. 53,P ＜0. 05 ]. Conclusions CD+38, CD+138, CD-19, CD-45 and CD+56 are the characteristic markers of MM cells compared to those of the normal plasma cells. MRD analysis is a valuable prognostic factor for MM patients.

Objective To investigate the relationship between CD158j expression and phosphorylated ERK (p-ERK) in CD4+ CD28null T cells in cerebral infarction (CI) patients- with carotid atherosclerosis and its effects on carotid atherosclerotic plaque stability. Methods Percentage of peripheral CD4+ CD28null and the expression of CD158j and perform on CD4+ CD28null cells was analyzed with flow cytometry in 106 CI patients with carotid atherosclerosis, 33 CI patients with normal carotid arteries and in 50 normal controls, respectively; p-ERK expression was assayed with flow cytometry in 36 CI patients with unstable plaque, and serum IFN-γ was detected with ELISA. The intima-media thickness (IMT) of bilateral carotid arteries in all subjects was confirmed by the colour Doppler ultrasonograph imagingResults Percentage of the CD4+ CD28null T cells, expression of CD158j and perform on CD4+ CD28null T cells and the serum IFN-γ levels was dramatically higher in CI patients than that in normal controls, respectively (all P <0.01), which was decreased in an order of CI patients with patients with unstable plaque, stable plaque, carotid artery IMT and with normal carotid artery. A strong positive correlation was observed between the CD158j expression and degree of p-ERK in CI patients with unstable plaque (P < 0. 01). Conclusion CD4+ CD28null T cells were significantly increased in CI patients with carotid atherosclerosis. CD158j might up-regulate p-ERK expression and induce the proliferation of the CD4+ CD28nullT cells; consequently, higher cytokine production such as IFN-γ produced by CD4+ CD28null T cells may cause the formation of unstable plaque.