OBJECTIVEThis study aims to investigate the temporal pattern of expression of vascular endothelial growth factor (VEGF) and new bone formation during midpalatal suture expansion osteogenesis for rapid maxillary expansion.

METHODSA total of44 New Zealand white rabbits were randomly assigned to 11 groups, namely, five experimental groups, five control groups, and one control 0 group. A Haas appliance was used for the rapid expansion of the midpalatal suture; rapid expansion was set for 2 weeks and fixed for 4 weeks. The tissue of the maxillary midpalatal suture was harvested on the day of installing rapid expansion (control 0 group), on weeks 1 and 2 for rapid expansion, and on weeks 1, 2, and 4 for fixed (experimental group and control group, respectively). The immunohistochemical method was used to detect distribution and expression of VEGF, and new bone formation was observed with periodic acid-Schiff.

RESULTSHigher VEGF expressions are observed after midpalatal suture distraction osteogenesis. Positive staining for VEGF is mainly noted in the vascular endothelial cells, and the active osteoblasts are at the edge of a newborn trabecular bone. A weak VEGF expression is detected among cells in the control group. The VEGF expression of the experimental group is higher than that of the control group in rapid expansion weeks 1 and 2 and in fixed weeks 1 and 2. The expression of VEGF in the experimental group increases significantly and peaks at fixed week 1, and then gradually decreases. The amount of newly formed bone in the experimental groups is always higher than that in the control group; moreover, it increases significantly and peaks at fixed week 2, and then gradually decreases.

CONCLUSIONThe mechanical strain created by rapid maxillary expansion generates a sequence of VEGF cellular events that lead to increased vascularization and subsequent new bone formation.

Objective:To observe the effect of rosiglitazone on serum MMP-9 con-centration and expression of peripheral monocyte MMP-9 in rats with diabetes.Method:Thirty SD rats were randomly divided into 3 groups:control group(n=10),diabetes group(n=10)and rosiglitazone group(n=10).The rat diabetic model was made by the intra- peritoneal injection of streptozocin.After the model was made successfully,the rats of rosightazone group were treated with rosiglitazone(5 mg?kg~(-1)?d~(-1)for 28d)by garage and the rats of control group and diabetes group were treated with normal saline.The concentration of serum MMP-9 were detected by Enzyme-linked Immunosorbent Assay(ELISA).The expres- sion of peripheral monocyte MMP-9 mRNA were measured by RT-PCR.Result:The concentration of serum MMP-9 were lowered by rosiglitazone treatment.The expression of peripheral monocyte MMP-9 mRNA were inhibited by rosightazone treatment too.Conclusion:Rosiglitazone may be stable artery atherosclerosis plaque through inhibit the mRNA expression of MMP-9.

FASS(field amplified sample stacking) is a technique for on-column enrichment in capillary zone electrophoresis. The distribution of solute in column during injection can be divided into two parts: the stack zone in running buffer and the sample solution zone imported by electroosmosis. Based on the investigation of transfer of solute in column, the results showed that the relationship between the length of two zone and injection time was nonlinear, so the relationship of injecting size that related with the mobility of solute and injection time. The increasing of the enrichment effect will not synchronize with the increasing of injection size, and the enrichment effect is decreased due to the laminar flow. To hold a basic constant column efficiency and desire enrichment effect, the ratio of mobility of solute in two zones should be maximum, and the injection time should also match with the ratio.

An ultra high performance liquid chromatography-photodiode array detection-tandem quadrupole mass spectrometry ( UPLC-PAD-MS/MS) method was developed for the determination of total 13 flavonols and flavonol glycosides in red onion which including 6 quercetin and its glycosides, 4 isorhamnetin and its glycosides, 3 Kaempferol and its glycosides. The chromatographic separation was carried out by used a UPLC HSS T3 column and eluted under gradient with mobile phases of acetonitrile and water both contained 0 . 1%formic acid at a flow rate of 0. 3 mL/min. The results showed that the major flavonols and flavonol glycosides in red onion were quercetin-4’-glucoside, quercetin-3, 4’-diglucoside, quercetin and Isorhamnetin-4’-glucoside. The amounts and distributions of flavonols and flavonol glycosides among different parts of red onion were different. For the same amount of dry materials, the content ratio of total flavonols and flavonol glycosides in the outer two layers, the third layer and the inner layer was 60. 3:33. 0:6. 7, the amount of quercitin and its glycosides accounts above 92. 1% of total flavonols and flavonol glycosides for each part. In the outer two layers, the amount of flavonol monoglycosides are the highest, in the third layer, the amount of flavonol aglycones were the highest, but in the inner layer, the amount of flavonol diglycosides were the highest. Small amounts of Kaempferol and its glycosides were found in red onion, and mostly were found in outer layers. This method is simple, fast, accurate and convenient, and can be used to analyze flavonols and flavonol glycosides in onion product.

Objective To evaluate the clinical safety and therapeutic efficacy of Rupiling Granules in treating cyclomastopathy (classified into deficiency of liver and kidney,disharmony of thoroughfare and Ren channels or complicated with syndrome of qi stagnation,blood stasis,or phlegm blended with blood stasis). Methods A randomized,double-blinded,positive drug controlled parallel polycentric trial was carried out. Results Rupiling Granules showed good therapeutic effect on reducing lump in breast,relieving pain of breast,improving TCM symptoms scoring. Conclusion Rupiling Granules is safe and effective for the treatment of cyclomastopathy (deficiency of liver and kidney ,disharmony of thoroughfare and Ren channels or complicated with syndrome of qi stagnation,blood stasis,or phlegm blended with blood stasis)

In order to advance the public hospital reform, the performance tests and management were strengthened to promote the rapid development of the hospital. The status of average daily bed ocupation, the number of outpatients and the natural birth rate increased while the drug proportion declined. Some departments were the top level in Hebei, departments of gynaecology and pediatrics were in the leading level in Tangshan.

Objective:To evaluate the linearity change of hard tissue of the juvenile of Class II division 1 with mandible functional retrusion by IMGA. Methods: The pre- and post- treatment cephalometric of 12 juvenile patients with IMGA were analyzed in Pancherz analysis to compare the dental position and the skeletal change. Results: After treatment, as far as OLp plane, the statistical changes were significance by pg/OLp,mi/OLp,ii/OLp, co/OLp +pg/OLp,is/OLp -ii/OLp,ms/OLp -mi/OLp,is/OLp-ss/OLp(P0.05), respectively. Conclusion: The IMGA is effective on the treatment of the juvenile patients of Class II division 1 with mandible retrusion of facial hypodivergency.

Objective To introduce ramified anterolateral femoral flaps pedicled with different musculocutaneous branches used for primary repair of soft-tissue defects at different regions of extremities. Methods From January 2008 to April 2009, 15 patients, 10 males and 5 females, were treated with an-terolateral thigh flaps for their soft-tissue defects at limbs which involved 4 hands, 6 feet and 5 legs and an-kles. Different shapes of anterolateral thigh flap were designed according to clinical anatomy and particular conditions of blood vessels and musculocutaneous branches in different cases. The flaps were ramified into 2 independent free flaps to repair 2 independent defects. The maximum distance between 2 defects was 8 cm. The area of defect ranged from 3.0 cm×3.5 cm to 8.0 cm×11.5 cm, and the flap area from 5.0 cm×5.0 cm to 9.0 cm×15.0 cm. Results According to clinical anatomy, the presence of sarco-cutaneous branches was 100%. The source blood vessel of the flaps was quadriceps artery of femur. The 15 patients were followed up from 3 to 8 months. The tissue grafts all survived and the flaps primarily healed at the recipient site. Revisions were done 3 weeks to 3 months after the primary operation to thin down the clumsy skin flaps in 6 cases, The shape and texture of the flaps were satisfactory. Conclusion Ramified anterolateral femoral flaps pedicled with different musculocutaneous branches provide an ideal way of repairing severe and complex soft-tissue defects at extremities.

Objective To analyze the relationship between bladder trabeculation degrees and the urodynamic findings in patients with benign prostatic hyperplasia (BPH). Methods A total of 358 patients with BPH were included.Based upon the urethrocystoscopy, the bladder trabeculation degree was divided into 4 grades:Grade 0-no bladder trabeculation;Grade 1-mild to moderate;Grade 2-severe;Grade 3-severe with formation of pseudo-diverticula.We analyzed the relationship between the bladder trabeculation found by fiber urethrocystoscopy and the urodynamic findings such as maximum flow rate (Qmax),P Qmax.Watte factor,compliance and residual urine volume.For statistical analysis AVOVA (analysis of variance) and Spearman correlation were used. Results In the 358 cases,the bladder trabeculation degrees were as follows:Grade 0,21 cases;Grade 1,228 cases;Grade 2,82 cases and Grade 3,27 cases.A significant correlation was found between bladder trabeculation and the urodynamic findings.As the degree of bladder trabeculation increased,Qmax decreased (Grades 0 to 3:11.50?1.13,10.28? 2.29,9.80?0.98,7.36?1.37 ml/s,respectively;F=22.43,P

AIM: To investigate the role of proliferation and apoptosis in hypertensive left ventricular hypertrophy (LVH) and the effect of AT 1 blockade with losartan. METHODS: Left ventricles (LV) from 12, 24-week-old SHR (SHR 12 , SHR 24 ), 24-week-old SHR treated with losartan (15 mg?kg -1 ?d -1 , SHR-L 24 ) during 12 weeks, and age-matched WKY rats (WKY 12 , WKY 24 ) were studied. Expression of PCNA was examined by immunohistochemistry. Apoptotic cells in LV sections were assessed by TUNEL method. Levels of fas mRNA were quantitated by RT-PCR. RESULTS: Compared with age-matched WKY, SHR 12 and SHR 24 showed increased LV hypertrophied index (HI), increased apoptotic index (AI) of myocytes ( P