Objective:To investigate the expression of Foxp3 and CD25 on CD4+ T cells from patients with new-onset systemic lupus erythematosus(SLE)and assess their clinical significance.Methods:Twenty-one new-onset and untreated SLE patients including ten with active(SLEDAI≥10)and eleven with inactive disease(SLEDAI≤5)were enrolled in this study.Eleven age-and sex-matched healthy volunteers were also included as controls.Peripheral blood samples were collected and mononuclear cells isolated.The expression of CD25,Foxp3 and CD127 by CD4+ T cells was analyzed by flow cytometry(FACS).Proliferation assays were performed with the isolated CD4+CD25+ and/or CD4+CD25-T cells.Results:There was no significant difference in number of CD4+CD25+Foxp3+T cells in subjects with either active(1.91%-6.75%)or inactive(2.74%-7.01%)SLE compared to normal controls(2.11%-9.90%)(P=0.524 and P=0.794 respectively),Moreover,suppressive capacity of CD4+CD25+T cells in new-onset lupus patients was not impaired as measured by the capacity to inhibit proliferation of CD4+CD25-effector T cells(P=0.174,P=0.689).While CD4+CD25-Foxp3+T cells in both active(3.71%-10.94%)and inactive(2.97%-7.69%)patients with new-onset SLE were significantly more frequent than in normal controls(1.01%-3.62%)(P

Objective To observe the effects of Hedan tablet on cytokines and oxidation factors in APOE-/-mouse, and to explore its effect on atherosclerosis and to explore its behind mechanism. Methods APOE-/-mice (n=50) were randomly divided into control group, model group, low dose Hedan tablet treatment group, high dose Hedan tablet treatment group and simvastatin treatment group. Mice in control group were given normal feed while mice in other groups were fed with high cho?lesterol diet. Hedan or Simvastatin was administrated intra-gastrically while normal saline was given to model group in the same route. After 12 weeks, mice were sacrificed to observe the mRNA level of tumor necrosis factor-α(TNF-αmRNA) in aorta by RT-PCR. Mean while, serum levels of interleukin-1 (IL-1), interleukin-10 (IL-10), malonaldehyde (MDA) and su?peroxide dismutase (SOD) were determined in different groups. Results Compared with control group, TNF-αmRNA tran?scription level as well as serum levels of IL-1 and MDA significantly increase while serum levels of IL-10 and SOD de?creased remarkably in model group, (P<0.01). Compared with model group, mRNA levels of TNF-αas well as serum levels of IL-1 and MDA were significantly decreased while serum levels of IL-10, SOD were greatly increased in low dose and high dose Hedan tablet treatment groups as well as in simvastatin treatment group (P<0.01). Conclusion Hedan tablet inhibit the formation of atherosclerosis through its anti-oxidation role and anti-inflammation role.

Objective To observe nitric oxide synthase (NOS) activity and the expresssion of inducible NOS (iNOS) mRNA in cultured calf aortic endothelial cells treated with various concentrations of insulin. Methods Cultured calf aortic endothelial cells were incubated with different concentrations of insulin for 24 h. NOS activity was determined by colorimetry and iNOS mRNA was measured by semi-quantitative RT-PCR. Results NOS activity and the expression of mRNA in calf aortic endothelial cells at pharmacological concentration (10 -7 mol/L) of insulin were significantly increased than those at physiological concentration (10 -10 mol/L) of insulin (P

Objective To investigate the expression of FOXP3 and CD25 in CD4+ T cells of peripheral blood from patients with early new-onset systemic lupus erythematosus(SLE) before and after treatment.Methods Forty-four early new-onset SLE patients including twenty-four with active disease (SLEDAI≥10), twenty with low active disease (SLEDAI

Objective To explore the effects of Buyang Huanwu decoction(BYHWD)on expressions of nuclear factor-κB p65(NF-κBp65)and its inhibitor( I-κB)in signal transduction of NF-κB in brain tissue of rats with focal cerebral ischemia injury. Methods 180 Sprague-Dawley(SD)rats were randomly divided into normal group,sham-operated group,model group,pynolidine dithiocarbamate(PDTC)group,minocycline(MC)group and BYHWD treatment group,each group 30 rats. The rats of PDTC group were given PDTC 100 mg?kg-1?d-1 by intra-peritoneal injection. In MC group,MC was given by filling the stomach,the dose was 2.35 g?kg-1?d-1,the drug solution was prepared by adding the distilled water,and the total volume of drug solution to fill the stomach was kept at the same volume in various groups,thus the concentration of the drug was different. In BYHWD group,BYHWD was given,the dose was reduced to 5 g?kg-1?d-1 according to the body surface area dose conversion formula about people and animals. In sham-operated group and model group,the distilled water was given in the same volume as other drug solution. The protein expression levels of NF-κBp65 and I-κB in ischemic tissues were examined by using immunohistochemical method on the time points 7,14 and 21 days after treatment in each group. Results Compared with model group, the cell numbers with expression of NF-κBp65 in PDTC group,MC group and BYHWD group were significantly decreased along with the prolongation of therapy time,the decrease in number was more and more,until 21 days,it reached the valley level(cell/400 times HP:44.00±6.91,45.33±6.55,18.67±2.14 vs. 126.00±5.78,all P<0.05);the number of cells with expression of I-κB was obviously increased,the differences being statistically significant(all P<0.05),but the differences in expression of NF-κBp65 among the treatment groups at the different time points were not statistically significant(all P>0.05). After treatment for 7 days,the number of cells with positive expression of I-κB protein in BYHWD group was less than that in MC group(cell/400 times HP:55.00±3.40 vs. 72.50±4.29,P<0.05);after treatment for 14 days,the number in BYHWD group was approximately the same as that in the MC group, the difference being not statistically significant(93.50±6.15 vs. 93.00±6.20,P>0.05),and after treatment for 21 days,the number in BYHWD group was significantly higher than that in MC group(88.83±4.95 vs. 71.17±7.16, P<0.05). Conclusion BYHWD can regulate the expressions of inflammatory cytokine I-κB and NF-κB in signal transduction of NF-κB in ischemic brain tissue to inhibit the inflammatory reaction,thus it has the protective effect on cerebral ischemia.

Objective To investigate focal cerebral ischemia on cell proliferation and expression of glial fibrillary acidic protein(GFAP) in caveolin-1 knockout mice.Methods Focal cerebral ischemia was induced by middle cerebral artery occlusion(MCAO) to caveolin-1-knockout mice and homologous C57 wild-mice.Expression of BrdU and GFAP in the brain were detected using immunohistochemistry in the postoperative 7d.Results The number of BrdU( (29.04 ± 1.68 )/mm2 ; (24.13 ±- 1.57 )/mm2 ) and GFAP-positive cells ( ( 10.75 ± 2.32 )/mm2 ; ( 18.14 ± 1.95 )/mm2 ) were increased in wild-type and caveolin-1 -knockout mice after ischemia,and there was significant difference compared with sham group (BRDU( 6.15 ± 1.09 )/mm2,(6.23 ± 1.05 )/mm2 ; GFAP (2.31 ±0.98)/mm2,(2.07 ± 1.01 )/mm2 ) (P＜0.05).Expression of BMU in knockout mice was less than that in wild mice,but expression GFAP in knockout mice was stronger than that in wild mice,and the difference was statistically significant (P ＜ 0.05 ).Conclusion Cerebral ischemia can promote cell proliferation and glial activation in brain,loss of caveolin-1 reduced cell proliferation and enhanced glial activation early stage of brain ischemia.

ObjectiveTo analyze whether association of edge to edge valve repair to artificial ring annuloplasty would result in better results in patients with severe tricuspid regurgitation (TR).MethodsFrom April,2001 to May,2010,41 patients underwent tricuspid valve repair to treat severe TR were studied.Twenty-one patients were done artificial ring annuloplasty alone (group R) and twenty patients were done artificial ring annuloplasty associated with edge to edge valve repair ( group E).All the patients received echocardiography before surgery,before discharge and in mid and long-term follow-up.The ratio between TR jet area (TRA) and right atrial area (RAA) was used to quantitatively evaluate the seriousness of TR.Movement of tricuspid valve leaflets,tricuspid valve orifice area,pulmonary artery pressure ( PAP),left ventricular ejection fraction ( LVEF) were obserbed to evaluate heart function.ResultsAt discharge in group R,no or trivial TR was presented in 7 patients,mild TR in 12 patients and moderate TR in 2 patient.Bad apposition of the free edges of anterior and septal leaflets was observed in paients with mild and moderate TR.While in group E,no or trivial TR was presented in 13 patients and mild TR in 7 patients.The follow-up ranged from 6 months to 100 months[average (54.8 ±26.7) months].In group R,no or trivial TR was present in 5 patients,mild TR in 11 patients,moderate TR in 4 patients and severe in 1 patient.Bad apposition of the free edges of anterior and septal leaflets was observed in paients with mild to severe TR.Redo tricuspid valve repair was done in one patient in group R for recurrent severe TR and the edge-to-edge valve repair was utilized.In group E,no tricuspid stenosis was found.No or trivial TR was presented in 10 patients,mild TR in 9 patients and moderate TR in 1 patient.The ratio of TRA/RAA of group R was significantly higher than that of group E (0.25 ±0.16 vs.0.13±0.10,P < 0.01).ConclusionAssociation of edge-to-edge valve technique to artificial ring annuloplasty was safe and effective for treatment of severe tricuspid regurgitation due to bad apposition of free edges of tricuspid leaflets and dilatation of tricuspid annulus,.It could decrease the incidence of residual tricuspid regurgitation and prevent the recurrence of severe tricuspid regurgitation.

Objective Tricuspid regurgitation is often associated in patients with congenital heart disease. Significant morbidity and mortality are related to tricuspid valve replacement. Tricuspid valve plasty is still a preferred choice. This report deals with our surgical experience in using edge-to-edge valve plasty technique to correct severe tricuspid regurgitation in patients with congenital heart disease. Methods From April 2001 to Mar. 2010, severe tricuspid regurgitation was corrected with a flexible band anuloplasty and edge-to-edge valve plasty technique in 14 patients with congenital heart disease. The age ranged from 7 years to 62 years [average (31.2 ± 16.1 ) years]. Congenital cardiac anomalies include: atrioventricular canal in 5 cases, secundum atrial septal defect in 6 cases, secundum atrial septal defect with mitral valve regurgitation in 2 cases and cor triatriatum in 1 case. Results No hospital death or postoperative morbidity occurred. No or trivial tricuspid regurgitation was present in 11 cases and mild tricuspid regurgitation in 3 cases at discharge. The follow-up ranged from 3 month to 97 months [average (51.6 ± 26.8 ) months]. No tricuspid stenosis was found. No or trivial tricuspid regurgitation was present in 5 cases. Mild tricuspid regurgitation was present in 8 cases, and moderate tricuspid regurgitation in 1 case at the latest followup. Conclusion Edge-to-edge valve plasty is an easy, effective and important procedure to correct severe tricuspid regurgitation in patients with congenital heart disease.

Objective To research the efficacy and safety of sequential rivaroxaban use in reducing blood loss after applying tranexamic acid(TXA)in total hip arthroplasty(THA).Methods According to the design by the random control principle,150 pa tients undergoing unilateral primary THA from September 2012 to June 2015 were selected and randomly divided into the group A,B,C,D and E (n=30).The group A did not use TXA,the group B received intravenous drip of 10 mg/kg TXA at 10 min before skin incision,the group Creceived intravenous drip of 15 mg/kg TXA at 10 min before skin incision,the group D respectively received intravenous drip of 15mL/kg TXA at 10 min before skin incision and after 3 h,the group E received intravenous drip of 15 mL/kg TXA at 10 min before skin incision and articular cavity use of 1 g TXA before closing the incision.Oral 10 mg rivaroxaban was given at postoperative 6-12 h when the drainage volume was less than 30 mL/h and then the conventional dose was used until postoperative 35 d.The intraoperative blood loss,postoperative drainage volume,hidden blood loss,blood transfusion rate,postoperative anticoagulation time,time of removing drainage tube,postoperative prothrombin time on postoperative 1 d,activated partial thromboplastin time,descend value of hemoglobin,and occurrence rates of postoperative deep vein thrombosis (DVT) and pulmonary embolism (PE) were observed in the group A,B,C,D and E.Results The intraoperative blood loss,postoperative drainage volume,hidden blood loss,blood transfusion rate and descend value of hemoglobin on postoperative 1 d had statistical differences among 5 groups(P＜0.05).The are significant differences between the group D and A in the intraoperative blood loss,postoperative drainage volume,hidden blood loss,blood transfusion rate,descend value of hemoglobin on postoperative 1 d,postoperative anticoagulation time and removal drainage tube time(P＜0.05).All cases had no symptomatic DVT and PE during the perioperative period and postoperative 3-month outpatient or telephone follow-up.Conclusion Sequential rivaroxaban use after applying TXA during THA perioperative period is safe and effective.Moreover intravenous drip of 15 mL/kg TXA at 10 min before skin incision and after 3 h has most significant effect in reducing bleeding volume during THA perioperative period.

The cuttlebones, harvested from cuttles, undergo the chemical reaction in high temperature and high pressure for a certain time. The products are qualitatively analysed, and spacial structure observation and cytocompatibility are tested. The results show that the chemical component of the cuttlebone is CaCO3 and the crystal type is aragonite. Cuttlebones undergo a hydro-thermal reaction, and thus transform into hydroxyapatite-that is, the cuttlebone-transformed hydroxyapatite(CBHA). The CBHA materials have the interconnected microporous network structures. Under the high magnification, CBHAs appear to have many micro-spheres, thus construct a new self-assembled nano-material system. The marrow stromal osteoblasts can adhere to and proliferate well on the surface of the CBHAs. These results show that CBHAs have good biocompatibility. Therefore, it can be a potential candidate scaffold for bone tissue engineering.
Animals ; Bone Substitutes ; chemical synthesis ; chemistry ; toxicity ; Cells, Cultured ; Durapatite ; chemical synthesis ; chemistry ; toxicity ; Materials Testing ; Osteoblasts ; cytology ; drug effects ; Rabbits ; Sepia ; anatomy & histology ; Spine ; anatomy & histology ; chemistry ; Tissue Engineering