0.025 63 h-1).A linear relation between absorption and concentration was noted for simvastatin at a concentration of 1.0～20.0 ?g?mL-1;and within a pH value of 5.0～7.4,the absorption of simvastatin was not affected.CONCLUSION:Simvastatin showed absorption behavior in the whole section of intestine.The absorption of the drug conforms to the passive transport mechanism and first-order kinetics.The results indicate that simvastatin can be formulated and prepared into sustained-release drug delivery system.

Objective To evaluate a new method of arthroplasty by transposing the greater trochanter together with a fascia flap pedicled by a branch of transverse lateral circumflex femoral artery. Methods On the basis of anatomical study, arthroplasty of the hip by transposition of the greater trochanter with fascia flap pedicled by a branch of transverse lateral circumflex femoral artery was performed in 17 patients (18hip). All the patients were followed up for six years and two months to eight years and two months. Results Pain vanished in 10 cases, slight pain remained in 1 patient, walking was nearly normal in 5 patients, and 2 patients were still limping with fast walk. Range of movement of the hip joint was as follows: flexion and extension 60?-120?, adduction 5?-15?, abduction 5?-10?, internal rotation 0?-5?, and external rotation 0?-5?. As shown by radiography, the joint space was obviously enlarged, the configuration of the femoral head was sharp, and the union between the greater trochanter and the femoral head was good. Conclusion Transposition of the greater trochanter with fascia flap pedicled by a branch of transverse lateral circurmflex artery to femoral head could result in a solid union with cartilagenous ossification and satisfactory recovery of function of the hip joint.

OBJECTIVE:To study pharmacokinetics and bioequivalence of Simvastatin sustained release tablets in healthy beagle dogs.METHODS:6 beagle dogs were randomized into two groups.They received oral single dose of Simvastatin sustained release tablets 20 mg(test tablet) or Simvastatin tablets for sale(reference tablet).Plasma samples were collected at different time points.Plasma concentration of simvastatin acid was determined by LC-MS/MS and pharmacokinetic parameters were calculated.RESULTS:The pharmacokinetic parameters of reference tablet vs.test tablet were as follows:Cmax:(23.461?6.043) ng?mL-1 vs.(13.942?3.236) ng?mL-1;tmax:(2.158?0.396) h vs.(4.116?1.145 3) h;t1/2:(4.564?0.645) h vs.(8.143?0.679) h;AUC0～24 h:(118.647?31.989) ng?h?mL-1 vs.(129.977?29.853) ng?h?mL-1.CONCLUSIONS:The absorption rate of test tablet is different from that of reference tablet.The two kinds of tablets are not bioequivalent.

Objective To know the renal damage in cadmium (Cd) exposed residents in Cd polluted areas where polluted by Cd for 20 years. Methods The levels of urinary Cd (UCd), N-acetyl-beta-D-glucosaminidase (UNAG), ?2-microglobulin (UBMG), retinal binding protein (URBP), and albumin (UALB) were measured in 39, 65, 57, and 42 residents lived in the severe-, moderate-, light-, and non-polluted area respectively for more than 20 years. The test indexes were adjusted with urinary creatinine, and geometric means were statistically used. Results The levels of UCd in all subjects were obviously decreased compared with those in 1992, but the levels of UCd, UNAG, UBMG, and URBP and the abnormal rate of UNAG in residents in Cd-polluted areas were significantly higher than those in residents in non-polluted area (P

OBJECTIVE:To establish the optimal technical condition for the extraction of volatile oil from the volatile herbs of Huoxiang zhengqi prescription with supercritical CO2 fluid(SFE-CO2).METHODS:The technical condition for the extraction of volatile oil from the volatile herbs of Huoxiang zhengqi prescription were optimized using L9(34)orthogonal design table with extraction pressure,the extraction temperature,the pressure and temperature of separator Ⅰ as factors and with the yield of the volatile oil as index.RESULTS:A highest extraction yield of volatile oil from the volatile herbs of Huoxiang zhengqi prescription was achieved(2.057%)under an optimal technical condition as follows:with extraction pressure at 25 MPa,the extraction temperature at 30 ℃,the pressure for separator Ⅰ at 9 MPa and the temperature of separator Ⅰ at 45 ℃.CONCLUSION:Extraction of volatile oil from the volatile herbs of Huoxiang zhengqi prescription by SFE-CO2 is characterized by high extraction yield,stable,pure operation,safe,and by which the biological activity of the volatile oil can be maintained,thus it is a potential extraction and separation method.

Objective To research on treament of femoral head of patients with osteoneerosis of the femoral head fracture.Methods Twenty-six patients half of femaoral head of patients with osteonecrosis of the femoral head fracture who treated with vascularzed bone graft were determined.Twenty-one hips treated with internal fixation unloaded and vascularzed bone graft after selective digital subtraction angiography (DSA) was performed to confirm the blood supply of femoral head.one case underwent total hip replacement after internal fixation unloaded.Results All patients were followed up for a mean of 23 months (range,12-38months)and were assessed clinically and radiologically according to Harris scoring.Selective digital subtraction angiography (DSA) was performed in 15 cases to confirm the blood reconstruction of femoral head.Two cases underwent total hip replacement postoperatively.Preoperative and postoperative Harris score were 54 and 86.2,clinical success rate was 92.0% and radiological success rate was 84.0%.DSA demonstrated blood supply was found reconstruction in the necrotic femoral head.Conclusion Femoral head of patients with osteonecrosis of the femoral head fracture was very much (recent 40%).Taking out of internal fixation,treatment of osteonecrosis of the femoral head by using vascularzed bone graft was confirmed,early clinical results were satisfied.

Objective:To determine the contents of paraceltamol and caffeine in New compouad Folium Isatidis Tablets simultaneously by HPLC. Methods:The determination was carried out with C 18 chemical bonded silica gel as a solid phase, methanol-water (25∶75) as a mobile phase and UV deterction wavelength at 215 nm. Results: The average recovenies of the added sample were 99.6%( RSD=0.67, n=5) for paracetamol and 99.3%(RSD=0.58, n=5) for caffine, There was a good linear relationship between the concentration and absorption area value in the rang of 1.6?g～6.4?g for paractamol or 0.16?g～0.64?g for caffeine.Conclusions: The method is simple, quick and accurate.

OBJECTIVE:To establish a method for the content determination of amygdalin in Lianhua qingwen capsule. METH-ODS:HPLC was performed on the column of Phenomenex Kinetex XB-C18 with mobile phase of acetonitrile-0.2%Phosphoric acid so-lution(6∶94,V/V)at a flow rate of 1.0 ml/min,the detection wavelength was 207 nm,column temperature was 30℃,and the injec-tion volume was 10μl. RESULTS:The linear range of amygdalin was 43.16-215.80 μg/ml(r=0.999 7);the limit of detection was 0.431 6μg/ml,the limit of quantitation was 1.294 8μg/ml;RSDs of precision,stability and reproducibility tests no more than 0.69%;recovery was 95.16%-100.49%(RSD=1.67%,n=9). CONCLUSIONS:The method is simple and rapid with high accuracy and well reproducibility,and can be used for the content determination of amygdalin in Lianhua qingwen capsule.

Objective To systematically evaluate the storage effect and transplant outcomes of University of Wisconsin (UW) preservation solution and histidine-tryptophan-ketoglutarate (HTK) preservation solution on liver allografts.Methods Literatures were researched using PubMed,Embase (1980-),Ovid Medline (1948-),The Cochrane Library,Wanfang database,VIP database from the database establishement to October 2015 with the key words including organ preservation,storage solutions,Histidine-tryptophan-ketoglutarate or HTK,custodial,bretschneider,University of Wisconsin,UW solution,viaspan,cardiosol,belzer solution,hepatic transplantation,liver transplantation,viscera transplantation,liver grafts,hepatic grafts,liver allografts,hepatic allografts,器官移植,器官保存液,UW,HTK,肝移植and比较.Two reviewers independently screened literatures,extracted data and assessed the risk of bias.All the patients using UW and HTK preservation solutions were respectively allocated into the UW group and HTK group.Count data were represented as the odds ratio (OR) and measurement data were represented as the standardized mean difference (SMD) and 95％ confidence interval (CI).The heterogeneity of the studies was analyzed using the I2 test.Results Eleven literatures were retrieved,and the total sample size were 34 475 patients including 25 248 in the UW group and 9 227 in the HTK group.The results of Meta analysis showed that there were no statistically significant differences in the primary transplants nonfunction,retransplant rate and 1-year grafts overall survival rate between the 2 groups (OR =1.18,0.84,0.97,1.02,95％ CI:0.55-2.57,0.47-1.50,0.66-1.42,0.66-1.58,P ＞0.05).There were also no statistically significant differences in the levels of alanine transaminase (ALT),aspartate transaminase (AST),total bilirubin (TBil) at postoperative day 1 between the 2 groups (SMD =-0.19,-O.30,0.30,95％ CI:-0.62-0.23,-0.70-0.10,-0.01-0.61,P ＞0.05).There were no statistically significant differences in the postoperative prothrombin time(PT) and alkaline phosphatase(ALP) between the 2 groups (P ＞0.05) and in the incidence of postoperative biliary complications between the 2 groups (OR =1.49,95％ CI:0.97-2.30,P ＞ 0.05).Conclusion There is similar storage effect between UW and HTK preservation solutions on liver allografts,and no difference in the transplant outcomes.

BACKGROUND:Now experimental and clinical research on suitable bone substitutes for alveolar bone defects after dental implantation is an issue of concern.OBJECTIVE:To study the therapeutic effect of titanium core/bone morphogenetic protein (BMP) composite material on alveolar bone defects after immediate implant placement.METHODS:Twenty-four New Zealand rabbits were randomly assigned into normal group (no intervention),experimental group or control group.Animal models of bone femoral greater trochanter defect were made in the experimental and control groups.Dental implant and titanium core/BMP composite material were implanted in the experimental group,while dental implant and titanium core were implanted in the control group.Percentage of CD4+,CD8+ T lymphocytes,natural killer cell activity and interleukin 2 level were detected at postoperative 4 weeks;bone mineral density and osteogenesis around the implant were detected at postoperative 16 weeks through X-ray and histological examinations.RESULTS AND CONCLUSION:X-ray results showed that the bone mineral density in the experimental group was significantly higher than that in the control group (P ＜ 0.05).Histological results showed that in the experimental group,different degrees of cell lysis around the composite,more bone cells and bone matrices were found,implant-bone osseointegration formed well,and red-dyed mature bone tissues were detective inside the implant.Compared with the experimental group,lower number of bone cells and fibrocytes were found in the control group.Additionally,the percentage of CD4+ and CD8+ T lymphocytes,natural killer cell activity and interleukin 2 level in the experimental group were significantly lower than those in the control group (P ＜ 0.05).To conclude,the titanium core/BMP composite material can effectively repair alveolar bone defects after immediate implant placement to guide the growth of bone cells.