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.

Adult ; Arterial Occlusive Diseases ; etiology ; Arteritis ; complications ; Coronary Artery Disease ; etiology ; Female ; Humans

Aim To investigate the effects of Shaoqiduogan(SQDG)on cellular immunity in mice with delayed-type hypersensitivity(DTH). Methods DTH model induced by 2, 4-dinitrochlorobenzene(DNCB)and cyclophosphamide(Cy)suppressed and potentiated DTH model were used. SQDG(30, 60 and 120 mg ? kg-1)were given intragastrically(ig)once daily for 7 consecutive days. Concanavalin A(Con A)-induced T cells proliferation was measured by MTT assay. The activity of IL-2 in culture supernatants of Con A-induced T cells proliferation was measured by testing its ability to support the proliferation of Con A stimulated thymocytes which was detected by MTT assay. Results In mice with DTH, SQDG(120 mg?kg-1)reduced ear swelling, thymus index, Con A-induced T cells proliferation and the activity of IL-2 in culture supernatants of Con A-induced T cells proliferation. The suppression and potentiation of DTH in mice were induced by given an intraperitoneal(ip)injection of Cy at the dose of 150mg?kg-1 on primary sensitization day and 250 mg?kg-1 three days before primary sensitization. SQDG(60 and 120 mg?kg-1)upregulated ear swelling, Con A-induced T cells proliferation and the activity of IL-2 in culture supernatants of T cells from mice with Cy-suppressed DTH; and downregulated levels of the aforementioned indexes in mice with Cy-potentiated DTH. Conclusion SQDG possesses a dual modulatory effect on cellular immunity in mice.

Humans ; Infant, Newborn ; Lupus Erythematosus, Systemic ; blood ; Male

Objective:To construct superparamagnetic iron oxide nanoparticles targeting tumor angiogenesis and evaluate their potential value as contrast agent in magnetic resonance imaging (MRI) .Methods:Ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles targeting tumor angiogenesis were prepared by using co-precipitation chemical method. Cyclic RGD(cRGD) containing the sequence of Arg-Gly-Asp were conjugated USPIO nanoparticles by using chemical conjugative method to prepare superparamagnetic imaging agent targeting tumor angiogenic vessles. The physical and chemical properties of cRGD-USPIO nanoparticles were detected. The specific binding capabilities of cRGD-USPIO and USPIO to human lung adenocarcinoma cells (A549) and human umbilical vein endothelial cells (HUVEC) were tested by Prussian blue staining. A549 xenografts were established in nude mice, then USPIO and cRGD-USPIO were injected though tail vein, and the MRI signal enhancement effect of cRGD-USPIO was evaluated.Results:We successfully prepared the cRGD-USPIO nanoparticles. Its core diameter was 5-10 nm and the average diameter was (43.97±10.10) nm and the quality saturation magnetic intensity was 59.94 A·m~2·kg~(-1). Cell-binding test suggested that cRGD-USPIO group showed strengthened positive staining. In vivo MRI experiments showed that signals of tumor were significantly reduced in cRGD-USPIO group than that in USPIO group (P<0.01). Conclusion:The constructed cRGD-USPIO nanoparticles can be developed as a potential tumor-specific MRI contrast agent for the early diagnosis of cancer.

Objective To investigate the level of uncertainty of illness and social support state in patients with prediabetes,and to discuss the correlation between the two.Methods 243 cases with prediabetes were analyzed by Uncertainty in Illness Scale and Social Support Rating Scale.Results There was a middle uncertainty in the elderly patients with prediabetes.The objective support,sabjective support,social support utilization degree and social support score were negatively related to the complexity of uncertainty(r--0.419,-0.433,-0.390 and-0.421,respectively,all P＜ 0.05).Conclusions Medical staff should evaluate the uncertainty in illness in elderly patients with prediabetes and conduct nursing intervention accordingly,in order to reduce the uncertainty,increase social support,and ultimately improve the quality of life.

Objective:To evaluate the effects of increasing end-tidal concentrations of sevoflurane and increasing stimulation voltage on motor evoked potentials,so as to provide evidence in making anesthesia plan for intraspinal tumor surgery.Methods:In the study,48 patients scheduled to undergo intraspinal tumor surgery [American Society of Anesthesiology,(ASA)Ⅰ-Ⅱ,18-65 years old]were enrolled. After general anesthesia induction,the patients were assigned to receive sevoflurane anesthesia of increa-sing end-tidal concentration in the sequence of 0.0%,0.5%,1 .0% and 1 .5% respectively,under a background of propofol and remifentanil.All the observations were done before the important steps of sur-gery.Remifentanil infusion rate was 0.2 μg /(kg·min),while the propofol infusion rate was adjusted to maintain the bispectral index values within the range of 30-50.At each concentration,4 stimulation voltages of 300 V,400 V,500 V and 600 V were employed to elicit motor evoked potentials (MEPs). The amplitude and latency of each MEP were compared.The success ratio was also recorded.Results:The concentration of sevoflurane and the stimulation voltage had impacts on the amplitude and latency of MEPs.Under each stimulation voltage,the MEPs amplitude decreased following increasing end-tidal sevoflurane concentrations,and significant differences were found in comparing 1 .5% sevoflurane (left 20.50 μV,70.71 μV,135.97 μV,190.00μV ,right 14.29 μV,50.71 μV,73.10μV,77.50μV) with 0.0% sevoflurane (left 143.00 μV,388.10 μV,484.53 μV,500.00 μV,right 176.00 μV, 407.60 μV,384.35 μV,451.00 μV)and 0.5% sevoflurane (left 100.00 μV,362.57 μV,444.05μV,435.00 μV,right 115.00 μV,207.15 μV,258.34 μV,358.50 μV),left χ2 =27.46,P<0.01,right χ2 =60.49,P<0.01;left χ2 =20.73,P<0.01,right χ2 =55.05,P<0.01;left χ2 =34.25,P<0.01,right χ2 =33.58,P<0.01;left χ2 =28.61,P<0.01 ,right χ2 =49.04,P<0.01;while there were no statistical differences in the latency changes (P =0.26 ).Under each end-tidal sevoflurane concentration,the MEPs amplitude increased following increasing stimulation voltages,and significant differences were found in comparing 300 V (left 143.00 μV,100.00 μV,61.50 μV,20.50μV ,right 176.00 μV,115.00 μV,41.07 μV,14.29 μV)with 400 V (left 388.10 μV,362.57μV,198.81 μV,70.71 μV,right 407.60 μV,207.15 μV,89.00 μV,50.71 μV)and 500 V (left 484.53 μV,444.05 μV,216.24μV,135.97 μV,right 384.35 μV,258.34μV,187.50μV,73.10μV)and 600 V (left 500.00 μV,435.00 μV,344.00 μV,190.00 μV,right 451.00 μV,385.50μV,156.00μV,77.50μV),leftχ2 =45.55,P<0.01,rightχ2 =25.73,P<0.01;leftχ2 =46.67, P<0.01,right χ2 =55.30,P<0.01;left χ2 =47.36,P<0.01,right χ2 =47.82,P<0.01;left χ2 =38.67,P<0.01,right χ2 =45.87,P<0.01;while the latencies were decreased,and significant dif-ferences were found in comparing 300 V with 400 V and 500 V and 600V(left F=7.50,P=0.01 ,right F=13.33,P<0.01),but the differences had little clinical significance.The success ratio decreased by increasing end-tidal sevoflurane concentration,and significant differences were found in comparing 1 .5%sevoflurane (left 43.8%,70.8%,77.1%,81.3%,right 37.5%,60.4%,75.0%,66.7%)with 0.0%sevoflurane (left 79.2%,87.5%,95.8%,93.8%,right 75.0%,95.8%,95.8%,95.8%)and 0.5%sevoflurane (left 72.9%,89.6%,95.8%,95.8%,right 66.7%,89.6%,95.8%,97.9%);the suc-cess ratio increased by increasing stimulation voltage,and significant differences were found in comparing 300 V(left 79.2%,72.9%,62.5%,43.8%,right 75.0%,66.7%,60.4%,37.5%)with 400 V(left 87.5%,89.6%,77.1%,70.8% ,right 95.8%,89.6%,79.2%,60.4%)and 500 V(left 95.8%, 95 .8%,9 1 .7%,77 .1%,right 95 .8%,95 .8%,8 1 .3%,75 .0%)and 600 V (left 93 .8%,95 .8%, 89.6%,81.3%,right 95.8%,97.9%,89.6%,66.7%),but there were no statistical differences in the success ratio of MEPs between the group with stimulation voltage of 600 V ,end tidal sevoflurane concen-tration of 1 .5% and the group with stimulation voltage of 300 V,end tidal sevoflurane concentration of 0.0% (P=0.22).Conclusion:Sevoflurane inhibited MEPs in a dose-dependent manner.It can de-crease the amplitudes and prolong the latencies.But increasing stimulation voltage will facilitate MEPs monitoring and increase the success ratio.Sevoflurane can be used in larger parts of MEPs monitoring surgery by increasing the stimulation voltage.

Objective To evaluate the short -term efficacy and adverse reactions of gemcitabin combined with nedaplatin to patients with metastatic triple -negative breast cancer after taxane and/or anthracycline treatment. Methods Thirty -three patients with anthracycline and/or taxane -resistant metastatic triple -negative breast cancer received gemcitabin and nedaplatin regimen:gemcitabin 1 000 mg/m2,d1,8 days,intravenous;nedaplatin 80mg/m2,d1,intravenous.Treatments were repeated every 21 days and response rate was evaluated every two cycles. Results Of 33 patients, complete remission ( CR) in 1 case ( 3.03%), partial remission ( PR) in 13 cases (39.39%),stable disease(SD) in 11 cases(33.33%),progressive disease(PD) in 8 cases(24.24%),objective response rate was 42.42%.The main adverse reaction was bone marrow suppression and gastrointestinal reaction. Conclusion Combination therapy of gemcitabin and nedaplatin is an effective and well tolerated rescue regimen in anthracycline and/or taxane -resistant metastatic triple -negative breast cancer patients.