Objective To fabricate rabbit endothelial progenitor cells(EPCs)-seeded stents in vitro and evaluate its feasibility.Methods The mononuclear cells of rabbit were separated by density-gradient centrifugation using lymphocyte isolation.Cells were seeded on fibronectin-coated 6-well plates and maintained on M199 with endothelial cell growth supplements(ECGS,30 ?g/mL).After 2 weeks,cultured cells were identified by immunofluorescence and immunocytochemistry.EPCs proliferation and migration were measured by drawing a growth curve and modified Boyden chamber assay.EPCs adhesion assay was performed by replating EPCs on fibronectin-coated dishes.VEGF and G-CSF were assayed by ELISA while NO was tested by nitrate reductase method.EPCs were poured on fibronectin-coated or uncoated stents.After 6 days,scanning electron microscopy and fluorescence microscopy observation were performed.Results About 14 days after seeding,a majority of spindle-like cells appeared which were characterized as cells,double positive for Dil-acLDL and FITC-UEA-I.EPCs were further confirmed by its expression of the endothelial cell marks of vWF.After 2 weeks culture,EPCs proliferated in exponential growth.They showed high ability of adhesion(96.7?3.2%),migration(15?4) and could secret VEGF,G-CSF and NO.Compared with uncoated stents group,more EPCs migrated and adhered on fibronectin-coated stents group(27.80?4.26 vs 6.10?3.07cells/?400 field,P

AIM:The present study is to observe the effect of Danshen Tablet combined with Simvastatin on hepatic function in patients with hypercholesterolemia.METHODS:Patients with hypercholesterolemia were randomly divided into Simvastatin treatment group(n=20)and Danshen Tablet combined with Simvastatin treatment group(n=20).Before study and after 12 weeks treatment,serum lipid(TC,TG,LDL-C,HDL-C,AST,ALT and CPK)were measured.RESULTS:After treatment,serum lipid in both groups were improved significantly,and there was no difference between them.In Simvastatin treatment group,there was a tendency to increase in ALT and AST,but we could reject at the significant level.In the same way,the serum lipid in combination treatment group decreased,but no statistic difference.Compared with Simvastatin treatment group,ALT and AST in combination treatment group reduced significantly.CPK in both groups did not change.CONCLUSION:Danshen Tablet can reduce liver injury by statin and could serve as an adjuvant in clinical hypolipidemic treatment.

Abstract: Malaria, an infectious disease caused by Plasmodium infection, is one of the most important public health problems worldwide. Artemisinin-based combination therapies (ACTs) are recommended by WHO as the first-line treatment for uncomplicated P. falciparum malaria in malaria-endemic areas. The application of artemisinin and its derivatives has played an integral role in reducing the global incidence of malaria. However, in recent years, the emergence and spread of artemisinin resistance has brought great challenges to global malaria control and elimination. At present, the mutation of K13 gene on chromosome 13 of Plasmodium falciparum is most closely related to artemisinin resistance, but in recent years, studies have shown that K13 cannot explain all artemisinin resistance. This article reviews the recent research progress in the field of artemisinin resistance in Plasmodium falciparum, including definition of artemisinin resistance, detection methods and molecular markers related to resistance. In addition, some of the issues discussed in this review remain controversial and require further study.

The technique of liquisolid compress is a new technique developed in 1990s, which was considered to be the most promising technique to improve the dissolution of water-insoluble drugs. In this article, tanshinone II(A) and the extracts of the ester-solubility fractions were chosen as the model drugs to evaluate the effects of the liquisolid technique for enhancement of dissolution properties of tanshinone II(A). Several liquisolid tablets (LS) formulations containing different dosage of drugs and various liquid vehicle were pre-pared and for all the formulations, microcrystalline cellulose and silica were chosen as the carrier and coating materials to evaluate their flow properties, such as angle of repose, Carr's compressibility index and Hausner's ratio. The interaction between drug and excipients in prepared LS compacts were studied by differential scanning calorimetry(DSC) and X-ray powder diffraction (XRPD). The dissolution curves of tanshinone II(A) from liquisolid compacts were investigated to determine the technique's effect in improving the dissolution of tanshinone II(A) and its impacting factors. According to the results, the dissolution increased with the rise in the dissolution of the liquid-phase solvent. The R-value and drug dosage can significantly affect the drug release, but with less impact on active fractions. This indicated that liquisolid technique is a promising alternative for improvement of dissolution property of water-soluble drugs, and can make a synergistic effect with other ester-soluble constituents and bettern improve the release of tanshinone II(A). Therefore, the technique of liquisolid compress will have a better development prospect in traditional Chinese medicines.
Calorimetry, Differential Scanning ; Diterpenes, Abietane ; chemistry ; Solubility ; X-Ray Diffraction

Objective To study the influence of autoblood cardioplegia on ATPase in neonatus myocardium with congenital heart disease and approach the mechanism of self-blood cardioplegia in protecting the myocardium in neonatus.Methods There were 30 cases of neonatus with congenital heart disease with body weight less than 8 kg,including 2 cases of ventricular septal defect(VSD),11 of VSD with severe pulmonary hypertension(PH),9 cases of USD with ASD,2 cases of atrial septal defect (ASD),6 of VSD and FPO.30 neonatus were divided into autoblood cardioplegic solution group(group A,n=10),allograft blood cardioplegic solution group (group B,n=10)and crystalloid cardioplegic solution group(group C,n=10).The biopsies were taken from right atrium just before arrested and after heart self-recovery to measure ATPase.Results Comparing with preoperative one,Na+-K+-ATPase creased obviously after operation in group A,B ,C (P＜0.05 ).There had no significant difference among the three groups before operation (P＞0.05).After operation,myocardial cell's Na+-K+-ATPase,Ca2+-ATPase and Ca2+Mg2+-ATPase in group A were decreased obviously as compared with that in group B and C (P＜0.05).Conclusion There is slight influence of autobloed cardioplegia on ATPase in neonatus with congenital heart disease,which can give a good protection to the myocardium in neonatus.

Adenocarcinoma ; blood supply ; metabolism ; mortality ; secondary ; Adult ; Aged ; Female ; Humans ; Lymphatic Metastasis ; Male ; Microcirculation ; Middle Aged ; Neovascularization, Pathologic ; metabolism ; pathology ; Prognosis ; RNA, Messenger ; biosynthesis ; genetics ; Receptors, Cell Surface ; biosynthesis ; genetics ; Receptors, Urokinase Plasminogen Activator ; Stomach Neoplasms ; blood supply ; metabolism ; mortality ; pathology ; Survival Rate ; Vascular Endothelial Growth Factor A ; metabolism

Objective To compare the curative effect of 360° arthroscopic denervation and routine arthroscopic debridement in treatment of knee osteoarthritis.Methods A total of 85 patients were included in the study after excluding the 5 follow-up dropout among the 90 patients with knee osteoarthritis treated between May 2006 and May 2011.Subsequently,the odd and even quality of the mantissa of admission number was used to determine the groups:Group A,42 patients underwent routine arthroscopic debridement; Group B,43 patients underwent arthroscopic debridement plus 360 degree denervation.Traumatic and degenerative arthritis occurred in 30 and 55 patients respectively.There were 34 male and 51 female patients whose mean age was 63 years (range,52-73 years).Western Ontario and McMaster University Osteoarthritis Index (WOMAC),MOS item short from health survey (SF-36),and visual analogue score (VAS) were compared between the two groups before and after operation.Results WOMAC score and SF-36 score of the two groups improved after surgery.At postoperative 6 months,12 months,and 24 months,WOMAC in Group B scored 81.0,78.5,and 82.4 respectively,lower than 86.8,83.8,and 91.7 in Group A (P ＜ 0.05) ; SF-36 in group B scored 47.4,46.3,and 44.4 respectively,higher than 43.9,41.4,and 39.5 in group A (P ＜ 0.05).At postoperative 1 week,VAS of group B was 1.6 points,lower than 2.6 points in group A (P ＜ 0.05).There was no statistical difference between the two groups in postoperative swelling of joint (P ＞ 0.05).Conclusions According to the area involved in knee osteoarthritis and characteristics of innervation of knee joint synovium,arthroscopic 360° denervation provides thorough debridement and removes as many innervation of knee joint synovium.Arthroscopic 360° denervation is superior to the routine arthroscopic debridement in improvement and duration of the symptoms.

Objective To investigate the prognostic factors of cervical high-grade squamous intraepithelial lesions treated by cold knife conization with negative margin.Methods Two hundred and sixty-six women with cervical high-grade squamous intraepithelial lesions treated by cold-knife conization with negative margins at Beijing Hospital between Jan 1999 and Jan 2004 were analyzed retrospectively.All patients were followed up with cytology,high-risk human papillomavirus(HPV)test and eolposcopy if necessary.Results The cervical CIN recurrence rate was 8.6% with no incidence of invasive cervical cancer after a median follow-up of 46 months.The recurrence was related to the grade of lesions and gland involvement pathologically.One of 20(5.0%)cases with cervical intraepithelial neoplasia(CIN)Ⅱ,9 of 164(5.5%)cases with CIN Ⅲ(excluding carcinoma in situ,CIS)and 13 of 82(15.8%)cases with CIS recurred(P

During the dilute acid pretreatment of lignocellulosic materials such as corn stover, hemicellulose is hydrolyzed into monosaccharides, and meanwhile, toxic by-products are simultaneously generated, which may influence ethanol fermentation thereafter. Studies on the inhibitory effects of the by-products on ethanol fermentation are of practical use for further improvement of ethanol yield from lignocellulosic materials. Five by-products, including acetic acid, formic acid, vanillin, furfural and 5-hydroxymethylfurfural, were identified to be the main components in the hydrolysate of dilute acid pretreatment of local corn stover, which were added into the medium at different concentrations to study their impacts on the growth and ethanol fermentation of a recombinant xylose-utilizing yeast strain, S. cerevisiae 6508-127. The ethanol production was inhibited by formic acid and acetic acid to a lesser extent than that to the growth, and formic acid was shown to be much more toxic than acetic acid, showing severe inhibitory effects at the concentration of 1g/L, half of the concentration for acetic acid which showed remarkably negative effects on ethanol fermentation. Vanillin caused a much longer lag-phase in growth when the concentration was 2g/L, and the lag-phase was not obvious at lower concentrations. At the concentration of 6g/L, vanillin completely inhibited the fermentation as well as the cell growth. 5-Hydroxymethylfurfural was showed to remarkably inhibit ethanol production, but the biomass yield was higher by exogenous addition of 5-Hydroxymethylfurfural than control. Furfural at 0.5~1.5g/L inhibited the cell growth, but the ethanol yield was higher than that of the control experiment. It was also found that vanillin, furfural and 5-hydroxymethylfurfural could be assimilated and metabolized by S. cerevisiae 6508-127 under the experimental conditions.