Objective To observe the effect of polyethylene terephthalates (PET) coated with 58S bioactive glass on graft-bone healing.Methods The PET coated with 58S bioactive glass was used in experimental group,and uncoated PET was used as a control.The coating solution was made of 20％ bioactive glass powder and 80％ gelatin powder (by weight).In our vitro study,4×104/ml MT3T3-E1 cells were cultured in 24-well plates with the coated or uncoated PET,and the MTT and ALP were tested at 1,3,5 days to show the proliferation and the activity of the cells.The SEM and the X-ray photoelectron spectrometer were adopted to analyze the surface characteristics of the fiber.In our vivo study,24 skeletally mature New Zealand white rabbits were randomly divided into two groups,the 58S-PET group and the PET group.Both groups underwent a surgical procedure to establish a tibia-articular tendon-bone healing model.Mechanical examination and histological assay were taken to verify the coating effect in vivo.Results The 58S-PET group showed significantly differences in both the MTT and ALP tests at each time point (3,5 days) compared with the PET group.In the animal experiments,the maximum load increased by time in both groups.At 6 weeks,the load-to-failure was significantly higher in the 58S-PET group [(61.70±6.95) N]than that of the PET group [(45.21±9.78) N].At 12 weeks,the load-to-failure was also significantly higher in the 58S-PET group [(89.25±9.50) N]than that of the PET group [(71.38±6.26) N].In the histological assay,it was found that there was new bone formation in the indistinct interface between the graft and the host bone in both groups at 6,12 weeks,and a stronger binding was seen in the 58S-PET group than in the PET group.Conclusion The 58S-PET could enhance the proliferation and activity of the osteoblast and therefore promote the new bone formation and subsequently leads to a positive effect on tendon-bone healing.

Objective To evaluate retrospectively the role of 18 F-fluorodeoxyglucose (FDG) PET/CT associated with MRI in the localization of epileptogenic foci. Methods Sixty-seven patients with medically resistant epilepsy were included from 2003 to 2008. All underwent 18F-FDG PET/CT and MRI for presurgical evaluation as well as post-surgical evaluation 12 to 65 months after operation. Based on postoperative seizure occurrence, patients were divided into two groups. One group was free of seizures ( Engel classification Ⅰ, Group 1) and the other was with postoperative seizure occurrence of any type ( Engel classification Ⅱ-Ⅳ, Group 2). X2-test or Fisher's exact test was used for the statistical analysis. Results About 71.6% (48/67) patients were defined as group 1, and 19 patients were group 2 ( 11 were Engel Ⅱ , 5 were Engel Ⅲ, and 3 were Engel Ⅳ ). In Group 1, no statistically significant difference was found between concordant (45/63) and discordant findings (3/4) with regard to 18F-FDG PET/CT and MRI images (Fisher's exact test, P ＞0.05). For 41 patients that showed focal abnormality both on MRI and 18F-FDG PET/CT, 80.5% (33/41) were found in group 1. For 20 patients that showed focal lesions on MRI while with multi-focal or generalized abnormal metabolism on 18F-FDG PET/CT, 11 (55.0%) were in group 1 and9 (45.0%) were group 2. There was no significant difference (33/41 vs 11/20, X2 =4.34, P ＜0.05 ). Conclusion 18F-FDG PET/CT associated with MRI may offer more helpful information for pre-surgical evaluation and prediction of prognosis of epileptic patients.

Objective The relationship between fever and the recent curative effect of transcatheter arte -rial chemoembolization ( TACE) and the related factors of fever after transcatheter arterial chemoembolization in large hepatocellular carcinoma is discussed in this paper .Methods One hundred and twenty patients with large liver cancer were divided into two groups according to the fever after TACE .The fever in group A ,and there was no fever in group B after TACE .The changes of the lesions in the two groups were compared after the first inter-ventional treatment .The factors affecting the fever after TACE were analyzed .Results The CT was performed at about one and half month after the first intervention .The curative effects of A and B were evaluated by RECIST criteria.Two groups of CR,PR,SD,PD were 0,11.11%,71.11%,17.78%and 0,0,33.33%,66.67%,respec-tively.The difference of the efficiency of OR was statistically significant (P=0.049).The probability of fever of four types of iodine oil deposits are as follows:100%,93.33%,81.93%,0.Blood supply type,middle and severe hepatic arteriovenous fistula,the use of gelatin sponge,tumor necrosis,and the use of iodine oil were more than 25ml may be factors affecting postoperative fever .Conclusion The clinical symptoms of fever after TACE sug-gest that the lesion is well embolization and iodine oil deposit is good ,and the lesion is not easy to progress ,and short-term curative effect is better .The analysis of the factors that affect the postoperative fever may help to eval-uate the curative effect of patients with large hepatocellular carcinoma .

Background Proliferative diabetic retinopathy (PDR) is a serious complication of diabetes mellitus,and vitrectomy is a main treatment.Exploring the influential factors of blood glucose fluctuation during perioperative duration is helpful for surgery.Objective The aim of this study was to explore glycolic fluctuation and its influential factors in PDR patients.Methods A retrospective cases-observational study was carried out.The clinical data of 100 PDR patients who received vitrectomy in Peking University People's Hospital from March to August in 2013 were collected,including 8 cases with type 1 diabetes mellitus and 92 cases with type 2 diabetes mellitus.The PDR patients were staged as Ⅳ,Ⅴ,Ⅵ based on the criteria of The First National Fudus Conference.The body height,weight,history of hypertension,PDR stage,previous usage of insulin,glycosylated hemoglobin (HbA1c) level,admission blood pressure,blood glucose level in different time points and postoperative body positions were recorded,and perioperative anxiety was scored according to the Hamilton Anxiety Scale (HAMA).Repeated ANOVA was used to analyze blood glucose and anxiety at different time points.Results The linear regression analysis showed that the preoperative blood glucose level was lower in the patients who used insulin during perioperative period(r =-1.64,P＜0.05).HbA1 c level showed the positive correlations with the blood glucose level at different time points(all at P＜0.05).The waiting time for surgery had a positive correlation with the fasting blood glucose in the morning of operative day(r=0.54,P＜0.05),and the postoperative position primarily caused the raise of postoperative right blood glucose(r =1.10,P＜0.05).The anxiety score on admission presented with the positive correlations with the blood glucose levels at admission and 2 hours after breakfast,lunch and dinner on the first postoperative day (r=0.13,0.07,0.05,0.10,all at P ＜ 0.05),and the high anxiety scores at preoperation and postoperation induced the high blood glucose levels at the corresponding time points (r =0.14,0.16,both at P＜0.05).A positive correlation was found between the anxiety score and blood glucose fluctuation values (ρ=0.47,P＜0.01).The blood glucose values were significantly lower in the patients with normal HbA1c than those with high HbA1c (all at P ＜ 0.05).Conclusions Remaining an ideal HbA1c level,establishing a good doctor-patient relationship and administering appropriate sedative drugs can ease the anxiety and improve the glycolic of PDR patients during preoperative duration.

Humans ; Supranuclear Palsy, Progressive ; Acupuncture Therapy

Arginine Deiminase(ADI) was purified to homogeneity using ammonium sulfate precipitation,Q-Sepharose Fast Flow anion exchange chromatography and SephadexG-75 gel filtration chromatography. This purification protocol resulted in a 34.5-fold purification of ADI with 31.4% final yield. A molecular weight of about 190 kD determined by native gradient polyacrylamide gel electrophoresis. The enzyme has only one kind of 46 kD subunit determined by SDS-PAGE. Combining the results from the two kinds of electrophoresis,the authors deduce that the enzyme may be a tetramer. The optimum pH and temperature for lipolytic activity of ADI was pH 6.5 and 50℃,respectively. It was extremely stable at 45℃ and retained 97.9% of its original activity for 30 min. The stability declined rapidly as soon as the temperature rose over 50℃. ADI was highly stable in the pH range from pH 5-8. ADI acted on L-arginine but not on D-arginine. ADI catabolism was dependent on metal ions. At their adequate concentration,Mn2+,Mg2+ and Co2+ were the effective promoter,while superfluous Zn2+and Co2+ inhibited ADI activity. L-citrulline did not act on ADI,but L-ornithine inhibited ADI activity. The degradation of L-arginine with ADI catalysis was according to simple Michaelis-Menten equation. The Michaelis constant was 3.2686 mmol/L and the maxi-mum velocity was 2.44 ?mol/min.

Humans ; Lipoma ; diagnostic imaging ; pathology ; surgery ; Male ; Mediastinal Neoplasms ; diagnostic imaging ; pathology ; surgery ; Middle Aged ; Thymus Neoplasms ; diagnostic imaging ; pathology ; surgery ; Tomography, X-Ray Computed

Objective To investigate the effects of penehyclidine hydrochloric(PHC)pretreatment on the expression of β-arrestin-2 in the lung tissue in sepsis-induced acute lung injury in mice.Methods Thirty female Ktmming mice,aged 6 weeks,weighing 18-20 g,were randomly divided into 3 groups(n =10 each):sham operation group(group S); sepsis group(group CLP)and penehyclidine hydrochloric pretreatment group(group PHC).Sepsis was induced by cecal ligation and puncture(CLP)in groups CLP and PHC.Penehyclidine hydrochloric 0.45 mg/kg was injected intraperitoneally at 1 h before CLP in group PHC.While the equal volume of normal saline was given instead of penehyclidine hydrochloric in groups S and CLP.At 12 h of CLP,the animals were sacrificed,and the lung tissues were removed for determination of MPO activity(by colorimetry),IL-6 content(by ELISA),β-arrestin-2 mRNA and protein expression(by RT-PCR and Western blot respectively).Blood samples and bronchoalveolar lavage fluid were collected to calculate pulmonary vascular permeability index(PV PI).Results Compared with group S,PVPI,IL-6 content and MPO activity were significantly increased,the expression of β-arrcstin-2 protein was significantly down-regulaled while the expression of β-arrestin-2 mRNA was up-regulated in group CLP,and PVPI,IL-6 content and MPO activity were significantly incrcased,the expression of β-arrestin-2 protein was significantly up-regulated,while the expression of β-arrestin-2 mRNA was down-regulated in group PHC(P ＜ 0.05).Compared with group CLP,PVPI,IL-6 content,and MPO activity were significantly decreased,the expression of β-arrestin-2 protein was significantly up-regulated,while the expression of β-arrestin-2 mRNA was dow n-regulated in group PHC(P ＜ 0.05).Conclusion PHC pretreatment can attenuate the lung injury induced by sepsis in mice through up-regulating the expression of β-arrestin-2 protein.

Objective To investigate the efficacy and safety of using various sedative regimens during transcatheter arterial chemoembolization (TACE) for hepatocellular carcinoma (HCC).Methods 156 HCC patients were randomly divided into four groups.The control group (n =30):intramuscular injection of 10 ml saline;The diazepam group (n =42):intramuscular injection of 10 mg of diazepam;The promethazine group (n =42):intramuscular injection of promethazine 25 mg;and The combined group (n =42):intramuscular injection of 10 mg of diazepam and promethazine 25 mg.Results The blood pressure and heart rate of the control group was significantly higher than the other three groups,while the combined group was significantly lower than the diazepam and the promethazine groups.The sedative rating:Grade 0 of the four groups were:30,11,18,0 patients respectively;Grade 1 of the four groups were:0,21,15,24 patients respectively;Grade 2 of the four groups were:0,10,9,18 patients respectively;No patients were in grades 3 and 4.The anxiety score of the control group was significantly higher than the other three groups.There was no significant difference in complications among the four groups.Conclusion Diazepam and/or promethazine could be used effectively and safely during TACE,and they could reduce stress response of HCC patients during TACE,and improved tolerance of TACE.

Objective To study the efficacy of combining Entecavir with TACE to treat patients with primary hepatocellular carcinoma with undetectable levels of HBV-DNA.Methods From Aug 2011 to Sep 2013, patients with HBV-related hepatocellular carcinoma but with undetectable levels of HBV DNA who underwent TACE were divided into the treatment group (treated with Entecavir antiviral therapy) and the control group.The endpoints of the study were HBV reactivation rates, liver function, and survival rates.Results Using our predefined inclusion and exclusion criteria, 64 patients with primary liver cancer were divided into the treatment group (n =32) and the control group (n =32).The transaminase and bilirubin levels were raised and the albumin level was reduced at 5 days after TACE.However, there were no significant differences between the 2 groups (P ＞0.05).At 12-month follow-up after TACE, 8 (25.0％) patients developed HBV reactivation in the control group and 2 (6.3％) in the treatment group, the difference was significant (P ＜ 0.05).The level of transaminase was significantly higher in the HBV reactivation group when compared with the no HBV reactivation group (P ＜ 0.05).The overall 6-and 12-month survival rates in the treatment group and the control group were 93.8％ and 84.4％ vs 90.6％ and 59.4％ respectively.There were significant differences in the 12-month survival rates (P ＜ 0.05).Conclusion Entecavir combined with TACE to treat patients with HBV-related primary liver cancer with undetectable HBV-DNA effectively reduced HBV reactivation and improved survival at 12 months.