OBJECTIVE:To establish an HPLC method for the determination of Icariine in Qianlietong tablets.METHODS:Hypersil ODS(200 mm?4.6 mm,5 ?m) column was used for the HPLC determination,and the mobile phase consisted of acetonitrile-water(30∶70) at a flow rate of 1.0 mL?min-1.The detection wavelength was 270 nm.RESULTS:Icariine has good linear relationship in the range of 0.050 6～0.506 0 ?g(r=0.999 9).The average recovery was 102.67%(RSD=0.99%,n=6).CONCLUSION:The established method is simple,reproducible,specific and suitable for the quality control of Qianlietong tablets.

Four-week-old male Sprague-Dawley rats were rendered diabetic by intraperitoneal injection of streptozotocin (STZ) after feeding high-fat-diet for 8 weeks,and divided into diabetes group and tumor necrosis factorrelated apoptosis ligand(TRAIL) group.Normal rats severed as a control group.Treatment with TRAIL lasted for 3 months.Total cholesterol,triglycerides,low-density lipoprotein-cholesterol,blood glucose,and insulin levels were decreased in TRAIL group,as compared with diabetes group.Area of atherosclerotic lesion in TRAIL group [(23.8 ± 5.7) ％] was significantly smaller than that in diabetes group [(47.6 ± 7.8) ％].It suggested that TRAIL may reduce the area of atherosclerotic lesion in diabetic rats.

Objective To investigate the case of left-semicolon cancer with intestinal obstruction for the methods of one-stage resection and anastomosis.Methods The clinical data of ten patients with left-semicolon can- cer with intestinal obstruction treated by transanus ilues tube,were restrospectively analyzed from October 2004 to December 2006.Results No postoperative anastormotic leakage was found and the patients were clinically cured. Conclusion The technical problem that left-semicolon cancer with obstruction for one-stage resection and anastomo- sis was resolved by the application of transanus ilues tube.

Animals ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Endotoxemia ; blood ; drug therapy ; immunology ; Humans ; Lipopolysaccharide Receptors ; blood ; Lipopolysaccharides ; blood ; Phytotherapy ; Shock, Septic ; blood ; drug therapy ; immunology

Objective: To explore the effect of irisin on atherosclerosis with possible mechanisms in diabetes mellitus (DM) mice. Methods: A total of 30 ApoE-/- mice were randomly divided into 2 groups: Control group, the mice received citrate buffer solution for modeling control,n=10. DM group, the mice received streptozotocin injection for DM modeling,n=20; the DM group was further divided into 2 subgroups as DM control (DM-C) group, the mice received normal saline injection for 12 weeks and DM + irisin group, the diabetic mice received irisin injection for 12 weeks.n=10 in each subgroup. With 4 weeks of irisin intervention, the endothelium-dependent vasodilatation was detected. With 12 weeks of intervention, the blood levels of tumor necrosis factor-α (TNF-α), high-sensitivity C-reactive protein (hs-CRP), interleukin-6 (IL-6) and oxidized low-density lipoprotein (ox-LDL) were examined by ELISA, the plaque areas in aortic en face and cross sections were measured by Oil red O or HE staining, the macrophages/T lymphocytes inifltration in plaques were detected with immunohistochemistry, and the mRNA expressions of IL-6, IL-10, TNF-α were determined by RT-PCR. Results: Compared with DM-C group, DM + irisin group presented improved endothelium-dependent vasodilatation, decreased levels of blood inlfammatory factors, reduced plaque on face area sections (22.57 ± 2.17) % vs (35.09 ± 2.38) % and cross sections (19.36 ± 1.85) % vs (25.53 ± 7.87) %,P < 0.05, less macrophages (30.5 ± 2.79) % vs (41.34 ± 9.13) % T and lymphocytes infiltration (28.11 ± 4.24) % vs (35.79 ± 9.11) % in plaques and lower mRNA expressions of inflammatory factors(IL-6: 1.76 ± 0.50 vs 3.78 ± 1.15; TNF-α: 1.05 ± 0.30 vs 2.11 ± 0.48; ICAM-1: 1.96 ± 0.69 vs 2.71 ± 0.72; VCAM-1: 0.87 ± 0.21vs 1.45±0.25; MCP-1: 1.34 ± 0.34 vs 1.77 ± 0.55) at aortic wall, P<0.05.Conclusion: Irisin may improve atherosclerosis condition in ApoE-/- DM mice, the endothelial protection and antiinflammatoryreaction were the important mechanisms. Irisin has the potential for preventing/treating atherosclerosis.

Objective To investigate the effect of growth differentiation factor 11 ( GDF11 ) on aorta in apolipoprotein E-Null( ApoE-/-) mice and its possible mechanisms. Methods Four-week-old healthy male ApoE-/-mice were fed with high-fat diet for 1 week and were then divided into 4 groups:vehicle group(n=10), GDF11 group (n=10),adeno-associated virus-green fluorescent protein group(AAV-GFP group, n=10), and AAV-GDF11 group ( n=10 ) . The mice received intraperitoneal injection with phosphate buffered saline, GDF11 protein, a single injection of purified AAV-GDF11 or AAV-GFP through the tail vein, respectively. After 4 weeks, serum GDF11/8 level and endothelium-dependent vasodilatation were detected. After 12 weeks, serum GDF11/8, interleukin-6 (IL-6), tumor necrosis factor-α( TNF-α), total cholesterol ( TC), triglycerides ( TG), oxidized low density lipoprotein(ox-LDL), and free fatty acids(FFA)levels were measured, the plaque areas in aortic enface and cross sections were measured by oil red O or HE staining, the macrophages/T lymphocytes infiltration in plaques were detected with immunohistochemistry, and the mRNA expressions of IL-6, TNF-α, and IL-10 were determined by real-time PCR. Results Compared with vehicle or AAV-GFP groups, GDF11 and AAV-GDF11 groups presented improved endothelium-dependent vasodilatation, decreased levels of blood inflammatory factors, blood lipid, reduced plaque on face area sections[Vehicle group : GDF11 group:(31. 23 ± 3. 12)% vs (17. 18 ± 2. 17) %;AAV-GFP group : AAV-GDF11 group:(38.01±4.43)% vs(14.54±2.86)%,P<0.05]andcrosssections[Vehiclegroup :GDF11 group:(19. 87 ± 2. 11)% vs (10. 32 ± 1. 47)%;AAV-GFP group : AAV-GDF11 group:(23. 02 ± 2. 76)%vs (9.06±1.63)%, P<0. 05]. There were less macrophages and T lymphocytes infiltration in plaques and lower mRNA expressions of inflammatory factors at aortic wall. Conclusion GDF11 reduces the area of atherosclerotic lesion in ApoE-/-mice, which may be involved in endothelial protection, such as to reduce inflammatory reaction, and to change cellular composition in plaques.

OBJECTIVETo investigate the expression of zinc finger E-box binding homebox 1 (ZEB1) in the prepuce of hypospadias children and its relationship to the incidence of hypospadias.

METHODSPrepuce tissues were collected from 37 children aged 6-15 months undergoing hypospadias repair and 11 age-matched controls receiving circumcision. Based on the position of the urethral meatus, the hypospadias cases were classified as severe (n = 13) and mild-moderate (n = 24). The mRNA and protein expressions of ZEB1 were determined by immunohistochemistry and RT-PCR.

RESULTSThe expression of the ZEB1 protein was remarkably higher in the severe (100% [13/13]) and mild-moderate hypospadias patients (75.0% [18/24]) than in the controls (9.1% [1/11]), with statistically significant differences between any two groups (P < 0.05). RT-PCR showed the integrated density value (IDV) of the ZEB1 mRNA expression to be (0.67 ± 0.21), (0.81 ± 0.24), and (1.55 ± 0.29) in the control, mild-moderate, and severe hypospadias patients, respectively, significantly higher in the severe hypospadias than in the control and mild-moderate hypospadias groups (P < 0.05), but with no significant difference between the latter two (P = 0.64).

CONCLUSIONThe expression of ZEB1 is significantly increased in hypospadias patients, and its upregulation is positively correlated with the severity of hypospadias, which suggests that the overexpression of ZEB1 may contribute to the development of hypospadias.

Biomarkers ; metabolism ; Case-Control Studies ; Circumcision, Male ; Foreskin ; metabolism ; Homeodomain Proteins ; genetics ; metabolism ; Humans ; Hypospadias ; classification ; etiology ; metabolism ; Immunohistochemistry ; Infant ; Male ; Penis ; RNA, Messenger ; metabolism ; Transcription Factors ; genetics ; metabolism ; Up-Regulation ; Urethra ; Zinc Finger E-box-Binding Homeobox 1

Humanumbilicalveinendothelialcells(HUVECs)weretreatedwith3nmol/Lliraglutidefor10, 15, 30, 45, 60, 90, 120, 150, 180, 210, 240, and 270 minutes at the concentrations of 5. 5 or 30 mmol/L glucose. Western blot analysis was used to detected protein expression and phosphorylation of insulin receptor substrates-1 ( IRS-1 ) and endothelial nitric oxide synthase ( eNOS ) . The results showed that the baseline level of phosphorylated-eNOS/eNOS was lower in high glucose group than that in normal group(0. 239 ± 0. 016 vs 0. 400 ± 0. 02,P<0. 05). Liraglutide time-dependently increased phosphorylated-eNOS/eNOS and phosphorylated-IRS-1/IRS-1 levels at 5. 5 or 30 mmol/L glucose.

Child, Preschool ; Diagnosis, Differential ; Female ; Humans ; Lead Poisoning, Nervous System, Childhood ; diagnosis ; therapy ; Male

AIM: To investigate the effect of problem - based learning ( PBL) used in the teaching of medical students'evidence-based medicine ( EBM) .
METHODS: Five classes ( total 147 students ) were randomly selected as experimental ( PBL ) group, at the same time, another 5 classes ( total 149 students ) were also randomly selected as control group, using traditional teaching method ( lecture-based learning, LBL ) in 2010 grade. The final examination scores of the experimental group were compared with control at the end of term. In addition, all students were interviewed using self -administered questionnaire to obtain their evaluation for PBL practice. SPSS13. 0 software was used for statistical analysis.
RESULTS: The homogeneity test in baseline survey showed that the basic characteristics between the two groups of students were no significant differences, and were comparable (P>0. 05). Final exam results showed that in addition to the scores of the EBM basic knowledge indicated no significant difference between two groups of students (P>0. 05), for the 5 steps of EBM procedure, namely, asking questions, finding the best evidence, evaluating the evidence, using and practicing the evidence, re - evaluating the evidence, and the total scores between the two groups, there were significant statistically differences (P<0. 05). The results to student learning evaluation showed that there was no significant difference between the two groups (P>0. 05) in aspects of better understanding classroom knowledge, improving language expression ability, and writing skill exercises. And other residual items had a significant difference ( P<0. 05), especially in aspects of improving enthusiasm for learning, self - study ability, improving learning efficiency, information analysis and utilization ability, team collaboration, and communication between teachers and students, however, there was a very significant difference (P<0. 001) between the two groups.
CONCLUSION: PBL teaching mode can effectively improve teaching effectiveness and the quality of EBM teaching, so the this teaching mode is worth further popularizing.