OBJECTIVE:To establish a method for the determination of the dissolution of Qingyangshen dispersible tablets so as to provide method and parameters for quality control of this kind of tablets.METHODS:With water as dissolution medium in a rotating speed of 100 r?min-1,the dissolution of Qingyangshen dispersible tablets was determined by HPLC at a wavelength of 259 nm.RESULTS:Similar dissolution rates were obtained for 3 batches of Qingyangshen dispersible tablets,with accumulative dissolution rates of all samples at 45 minutes reached above 90%,and a good reproducibility was noted.CONCLUSION:The quality of Qingyangshen dispersible tablets is up to the standard stated in Chinese Pharmacopoeia(2005 Edition).

In view of the difficulties in the practice of innovation education,Harbin Medical University identified the education objective,cultivated innovative education concept and implemented this concept by launching innovative ability training projects for college students,establishing innovation base and emphasizing on information technology and network based innovative education practice.satisfactory education effect was achieved.

Objective To study the differences in the inclination of lower incisors among the female patients with beautiful profiles in different vertical skeletal types so as to provide the clinical treatment design for a certain guiding. Methods 137 cephalometric films of female patients with beautiful profiles were selected and divided into three groups based on the vertical facial types(∠SNMP):small degree(n = 31),average degree(n = 89) and larger degree groups(n=17). The angles of∠L1/MP and∠L1/A-Pog were measured and treated with covari-ance analysis for detecting the differences between the groups. Results The index of L1-MP(°)was the smallest in the larger degree group,the largest in the small degree group and average in the average group,with significant differences between the three groups(F = 17.38,P < 0.001). There was no significant differences in ∠L1/A-Pog (°)(F=2.61,P>0.05). Conclusion Lower incisors have compensatory inclined lingually in the group of higher mandible angle,but labially in the group of lower mandible angle.

Objective To evaluate surgical complications and outcomes based on prostate size in patients with benign prostatic hyperplasia (BPH) treated with plasmakinetic enucleation of prostate (PKEP).Methods A retrospective review was conducted of PKEP performed in 326 patients with BPH.According to the prostate size on preoperative transrectal ultrasonography measurement,patients were divided into three groups:groupl:＜40ml (n =92),group2:40～80ml (n =155),and group3:＞80ml (n =79).Intraoperative and perioperative parameters were evaluated.Patient perioperative data and postoperative outcomes were compared.Patients were followed up at 1,3,6 and 12 months after surgery.Early and late complications were recorded.Results There were significant differences among three groups regarding the mean operative time (P ＜ 0.01) and the mean resected tissue weight (P ＜ 0.01).However,enucleation efficiency (P ＜ 0.01) in gm tissue per minute increased significantly as prostate size increased.Mean hemoglobin decrease (P ＞0.05),mean serum sodium decrease (P ＞0.05),mean postoperative irrigation time (P ＞ 0.05),mean catheter time (P ＞ 0.05) and mean hospital stay (P ＞0.05) did not differ significantly among three groups.Three groups had a similar and significant postoperative improvement in international prostate symptom score (IPSS),quality of life (QOL),maximum urine rate (Qmax),and post-void residual urine volume(PVR) independent of prostate size (P ＜ 0.01),but no significant difference was found among three groups during 1,3,6 and 12-month follow-up (P ＞ 0.05).Perioperative and postoperative complications did not depend on prostate size (P ＞ 0.05).Conchsions Although patients with a larger BPH required significantly longer operation time in PKEP,prostate size did not affect perioperative and postoperative complications or micturition improvement.

Objective To study the effects of Shuanghuanglian Oral Solution (only for children) on general condition, body weight, food intake, growth and development, blood routine and pathologic changes of SD weanling rats; To provide experimental references for clinical safe medication.Methods SD weanling rats were randomly divided into control group,Shuanghuanglian (only for children) Oral Solution low-, medium- and high-dose group according to body mass, with 30 rats in each group. Each administration group was given corresponding amount of Shuanghuanglian Oral Solution (only for children) concentrated ointment for gavage, once a day, for 33 d. The toxicity of the rats during dosing period and recovery period (medicine withdrawal 25 d) was observed.Results There were no significant differences in general condition, individual development, organ mass and coefficient, and internal fixation and pathological findings of rats in administration groups during dosing period and recovery period. The body mass and food intake of female and male rats in the Shuanghuanglian Oral Solution high-dose group were lower than those in the control group. The blood routine test during dosing period showed that the lymphocyte ratio of female rats and male rats in Shuanghuanglian Oral Solution high-dose group decreased significantly, neutrophil ratio increased significantly, and then returned to normal level in recovery period.Conclusion Shuanghuanglian Oral Solution (only for children) concentrated ointment has no toxic effect on the whole body organs and tissues of juvenile rats, and the safety is good.

To examine the actual clinical diagnosis capability,the import of computer-based case simulations ( CCS ) technology in medical education is very important.The CCS examination system that integrated the ASP.NET and CCS technology can simulate doctor's clinical course more realistically and realize the students' practical skills evaluation.The system has a good prospect in medical education and clinical skills training.

OBJECTIVEThe purpose of this study was to investigate the relationship between the results of flowcytometry analyses of different clinical stage, location, pathologic grade and cell origin of oral and maxillofacial non-Hodgkin's lymphoma (NHL), and the diagnostic value of flowcytometry analysis in lymphoma.

METHODThis study analyzed 50 oral and maxillofacial NHL cases and 10 reactive lymph nodes (formalin fixed and paraffin embedded) by flowcytometry (FCM).

RESULTSReactive lymph nodes were all diploid. The diploid rate of NHL was 54%, and aneuploidy rate was 46%. There was statistically significant difference between reactive lymph nodes and NHL in the DNA ploidy status and cell cycle data (SPF, CV, S + G2/M, DI). The S phase fraction (SPF) and S + G2/M had close relationship with the grade of NHL. SPF value and DNA ploidy status had no obvious relationship with the prognosis.

CONCLUSIONThe results suggested that the FCM had diagnostic value in NHL, especially when the morphological diagnosis was difficult. Although the cell cycle data had no prognostic value, SPF and SPF + G2/M can show the proliferative status of NHL, which can help clinical doctor select therapeutic method.

Cell Cycle ; DNA, Neoplasm ; analysis ; Facial Neoplasms ; diagnosis ; genetics ; pathology ; Flow Cytometry ; Humans ; Lymphoma, Non-Hodgkin ; diagnosis ; genetics ; pathology ; Maxillary Neoplasms ; diagnosis ; genetics ; pathology ; Mouth Neoplasms ; diagnosis ; genetics ; pathology ; Ploidies ; Prognosis

Objective:To investigate the inhibitory effect of RNA interference (RNAi) on the expression of multidrug resistance (MDR1) gene and analyze the altered sensitivities of human renal carcinoma cell line to cisplatin.Methods:Three small interfering RNA (siRNA) sequences targeted MDR1 gene were synthesized and transfected into renal carcinoma A498 cells. The expression level of MDRl mRNA was measured by RT-PCR to identify the most effective siRNA sequence. The recombinant plasmid was packed by lentivirus and transfected into A498 cells. RT-PCR was used to screen the A498 cells with the optimal silencing efficacy. The MDR1 protein expression level in the cloned cells was verified by Western blotting. The inhibitory effect of cisplatin on the proliferation of A498 cells was assessed by MTT assay and the IC_(50) value was calculated. Results:The 3 siRNA sequences suppressed MDR1 gene expression at different degrees. The siRNA 1 sequence silenced MDR1 gene more effectively with a significant reduction of 67%. The MDR1 protein expression greatly decreased in screened A498 cells compared with non-transfected cells (P<0.01), and the IC_(50) value of cisplatin on screened A498 cells was significantly decreased by 83.37% (P<0.01). Conclusion: The RNAi could effectively inhibit the expression of MDR1 gene and increase the sensibility to cisplatin in human renal carcinoma A498 cell line, which make it possible to reverse the resistance of renal carcinoma to chemotherapy.

The aim of this study is to develop the real-time PCR assays to detect and qualify C. coli from stool specimen. The primers and probe were designed based on the specific sequence of ceuE gene in C. coli using Primer 5.0 and Vector NTI Suite 6.0 e. The PCR assay was optimized with the reference C. coli strains. The standard curve based on the dilutions of genomic DNA showed a linear relationship between log CFU/mL and threshold cycles. The detectable limitation was 5.62 CFU/mL by using purified DNA from bacteria culture. The reproducibility of this assay was assessed by calculating the variation of the threshold cycle value and the slope from test repeats for the same strains and different strains. Our results indicate that the developed assay has high sensitivity and specificity for identification of C. coli.