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Objective:To explore the application effect of task-driven teaching method combined with Sandwich teaching method in the standardized residency training of oral general practitioners.Methods:A total of 40 trainees of the standardized residency training of the Teaching and Research Section of Oral General Practice in Chongqing Medical University were randomly divided into experimental group and control group. The experimental group ( n=20) adopted task-driven teaching method combined Sandwich teaching method, and the control group ( n=20) adopted the traditional teaching method. The theory assessment, skills assessment and the teaching satisfaction questionnaire survey were conducted to evaluate the teaching effects. SPSS 19.0 software was used for t-test. Results:The theoretical test scores of the experimental group were significantly higher than those of the control group [(85.85±25.61) points vs. (74.35±10.53) points], and the difference between the two groups was statistically significant ( t=8.56, P < 0.001). The skill test scores of the experimental group were significantly higher than those of the control group [(86.50±18.20) points vs. (73.40±16.57) points], and the difference was statistically significant ( t=9.94, P<0.001). The results of the teaching satisfaction questionnaire showed that the experimental group had significantly higher scores than control group in such seven aspects as improving students autonomous learning ability and interest in learning, teamwork and interpersonal relationships, diagnostic ability of cases and the accuracy, doctor-patient expression and communication ability, ability to find and solve problems, stimulating interest in scientific research and teaching, mastering and understanding the oral theoretical knowledge and so on ( t=10.40, 10.40, 9.95, 5.43, 7.66, 8.08, 9.60, respectively, all P<0.001). Task-driven teaching combined with Sandwich teaching method stimulated the learning interest of trainees and improved their comprehensive ability. Conclusion:Task-driven teaching combined with Sandwich teaching method has greatly improved the teaching effect of standardized residency training of oral general practitioners.
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Purpose To investigate the role of S3I-201 on tubular interstitial lesion in lupus nephritis.Methods MRt/MpJ mice were designated as the control group.MRL/lpr nice were randomly divided into LN group,S3I-201 group and DMSO group.The serum and 24 h-urine were collected to detect the serum creatinine,blood urea nitrogen and urine protein.Immunohistochemistry was used to detect the expression of FN.Western blotting analysis was used to determine the expression of E-cadherin,α-SMA,MCP-1,ICAM1,STAT3 and p-STAT3.Results Compared with the expression level in control group,the protein level of α-SMA,MCP-1,ICAM1 and FN were increased in renal tissue of MRL/lpr mice,while the expression of E-cadherin was markedly decreased.And the STAT3 was activated in renal tissue of MRL/lpr mice.The administration of S3I-201 could inhibite the activation of STAT3 and ameliorate the expression of E-cadherin,α-SMA,MCP-1,ICAM-1 and FN.Conclusion S3I-201 can relieve the tubular interstitial leison,which maybe concerned with the phosphorylation of STAT3.
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<p><b>OBJECTIVE</b>To investigate the feasibility and accuracy of length measurement of in vivo teeth by using cone beam CT (CBCT).</p><p><b>METHODS</b>Before orthodontic extraction, 109 vital premolars from 40 participants were scanned by using CBCT and reconstructed by using InVivoDental software. Buccal-lingual sectional images along the long axis of teeth were then acquired, and the crown, root, and tooth length were measured separately. After careful extraction and fixation, the corresponding length of the same tooth was measured by using a digital caliper. CBCT measurement accuracy was then verified by using physical measurements as reference.</p><p><b>RESULTS</b>CBCT and the physical method did not obtain significantly different measurements of the root, crown, and tooth length of experimental teeth (P=0.790, P=0.621, P=0.657, respectively), and the measurements were found to be consistent. The 95% limits of agreement of root, crown, and tooth length were -1.10 mm to 1.13 mm, -1.00 mm to 0.96 mm, and -1.00 mm to 1.05 mm, respectively.</p><p><b>CONCLUSION</b>The difference between CBCT and the physical method was not significant, and good consistency was shown. CBCT could be applied in noninvasive measurement of in vivo teeth.</p>
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Humans , Bicuspid , Cone-Beam Computed Tomography , Tooth , Tooth RootABSTRACT
Objective To study the correlation between the post-transplant renal allograft function and the variation of serum cystatin C (CyC) concentration in renal allograft recipients. Methods One hundred and ninety-three renal allograft recipients accepted the same combination immunosuppressive regimen of tacrolimus, mycophenolate and prednisone were enrolled into the study. Patient's serum and urine samples were collected on day 5 post-transplant to detect serum cystatin C, serum and urine creatinine (SCr). Correlation analysis was used to analyze correlation between CyC concentration and SCr concentration or the calculated creatinine clearance rate (CkCCr) by using the Cockcroft-Gault equation and urine creatinine clearance rate (CCr). Specificity and sensitivity of using the CyC concentration to evaluate glomerular filtration rate (GFR) were calculated as well.Results The mean concentrations of serum CyC and SCr on day 5 post-transplant were (1.91±1.2)mg/L and (174.0±129.1)μmol/L, respectively. While the CCr and CkCCr were (67.9±27.3)ml/min and (68.1±27.8)ml/min, respectively. Forty-two patients had a CyC concentration below 1.25 mg/L, 102 patients'CyC concentrations were between 1.25 and 2.0 mg/L and 49 patients'CyC concentrations were above 2. 0 mg/L. As for SCr, 62 patients had a concentration below 125 μmol/L, 83 patients'concentrations were between 125 and 200 μmol/L and 48 patients'concentrations were above 200 μmol/L. For CkCCr, there were 52 cases with a concentration above 80 ml/min, 96 cases with a concentration between 80 and 60 ml/min and 45 cases with a concentration below 60 ml/min. Serum CyC concentration had a negative correlation with CkCCr (r=-0. 907, P＜0. 001) and had a significantly positive correlation with SCr concentration (r=0. 886, P＜0. 001). SCr had a significantly negative relationship with CkCCr (r=-0. 889 ,P＜0. 001). Serum CyC had higher correlation with CkCCr than the correlation between SCr and CkCCr. The ROC curves showed that areas under curve of CyC, SCr, CCr and CkCCr were 0. 877, 0. 771, 0. 832 and 0. 909, respectively. Specificity and sensitivity of CyC, SCr,CCr and CkCCr were 69.3%, 96.1%, 77.1%, 71.3%and 91.6%, 52.2%, 67.5%, 84.6%, respectively.Conclusions Serum CyC concentration elevates earlier than SCr concentration when there is slight renal function impairment. Serum CyC concentration might become a more sensitive marker to evaluate the post-transplant renal allograft function in renal transplant recipients.
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A set of specific primers was synthesized according to DNA sequence of HBV found in China, the reverse transcriptase (RT) region in polymerase gene was amplified by PCR method from the serum of 3 patients with chronic HBV infection, and then the PCR products were subcloned into pGEM Teasy vectors. 13 clones were sequenced. Sequence comparison of the selected clones was made to look for the difference. After being compared, 13 sequences of RT were found different. Besides 2 clones with long sequence deletion, the different rate of RT coding nucleic acid sequences, RT and HBsAg amino acid sequences of the 11 clones is 5 1%, 4 9% and 7 5%, respectively. Many mutation types, including point substitution and deletion mutation, were found in this region. There is quasispecies population and defective HBV genome in patients with chronic HBV infection.