Cell Line, Tumor ; Gene Expression Regulation, Neoplastic ; Humans ; Lung Neoplasms ; genetics ; metabolism ; pathology ; MicroRNAs ; genetics ; metabolism ; Paraffin Embedding ; RNA, Neoplasm ; genetics ; Reverse Transcriptase Polymerase Chain Reaction ; methods

Objective To establish a cell line with overexpression of rat serotonin1A receptor (5-HT1AR).Methods Human neuroblastoma cells-SH-SY5Y were donated by cancer institute attached to the 4 th Affiliated Hospital, Hebei Medical University. Total RNA was extracted from brain tissues of male SD rats and rat 5-HT1A R was obtained by RT-PCR. Plasmid pc-DNA3. 1/hisC containing the rat 5-HT1AR (pc-DNA3.1/hisC-Rat-5-HT1AR)was constructed and transfected into SH-SY5Y cells. The transfected cells were isolated by G418 selection and SH-SY5Y-Rat-5-HT1A R cells were obtained. Expression of 5-HT1A R was detected by Western blot analysis. Cell viability was evaluated by MTT assay. SH-SY5Y-Rat-5-HT1AR cells were further observed for 5-HT1AR by immuno-fluorescence staining. Results Plasmid pc-DNA3. 1/hisC-Rat-5-HT1AR was successfully constructed by linking Rat-5-HT1A R with pc-DNA3.1/hisC and transfected into SH-SY5Y. The SH-SY5Y-Rat-5-HT1A R cells were more slender than SH-SY5Y cells with less and longer processes. MTT showed that the viability of SH-SY5Y-Rat-5-HT1A R cells was much lower than SH-SY5Y. Rat 5-HT1A R was expressed efficiently on the membrane of SH-SY5Y-Rat-5-HT1A R cells. Conclusion A cell line with overexpress of rat 5-HT1A R is successfully established.

Carcinoma, Hepatocellular ; pathology ; Humans ; Liver Neoplasms ; metabolism ; pathology ; MicroRNAs ; metabolism ; Neoplasm Invasiveness ; Neoplasm Metastasis ; Neoplasm Staging ; Paraffin Embedding ; Real-Time Polymerase Chain Reaction ; Up-Regulation

Objective To study the changes of the peripheral blood regulatory B cells and related cytokines in children patients with chronic idiopathic thrombocytopenic purpura (CITP),and to analyze their correlations with effective Th cells,and to discuss their roles in the pathogenesis of CITP.Methods The peripheral blood mononuclear cells (PBMC)were separated in 30 cases of CITP,then percentages of Th1 ,Th17,Th22 and Breg cells were detected by the flow cytometry(FCM).IFN-γ,IL-17,IL-22 and IL-10 levels in culture supernatant were measured by the ELISA method.Results Compared with the control group,the proportions of the peripheral blood Th1 ,Th17,Th22 subsets in CITP children were increased[(18.4±4.7)% vs.(10.82±4.4)%;(2.42±1.02 )% vs.(1 .23±0.42)%;(0.79±0.24)% vs.(0.26±0.11)%],the proportion of Breg cells was reduced significantly,the differ-ences had statistical significance[(0.83±0.21)% vs.(1 .89±0.12)%,P <0.05].In CITP children,the IFN-γ,IL-17,IL-22 levels in culture supernatant were higher than those in the control group[(278.2±121.2)pg/mL vs.(181.8 ±82.2)pg/mL;(214.8 ± 100.5)pg/mL vs.(161 .4±67.8)pg/mL;(122.16±22.2)pg/mL vs.(90.8±31.1)pg/mL],but the IL-10 level was lower than that in the healthy control group[(27.4±12.6)pg/mL vs.(46.1±16.2)pg/mL),differences between them had statistical signifi-cance(P <0.05).Besides,there was a positive correlation between the proportion of Breg cells and cytokine IL-10 level(r=0.617, P <0.05 ),however,there was a negative correlation between the proportion of Breg cells with Th1 ,Th17 and Th22 cells (P <0.05),between IL-10 level with IFN-γ,IL-17 and IL-22 levels(P <0.05).Conclusion The downregulation of Breg cells proportion may participate in the immune disorder mechanism of effective Th cells in CITP children,which can provide a new idea for the im-munoregulation therapy in CITP children.

Antibodies, Neutralizing ; Apoptosis ; Hep G2 Cells ; Humans ; Receptors, Tumor Necrosis Factor, Member 6b ; immunology ; metabolism

Objecfive To detect the functional repair of metanephric mesenchymal cells (MMCs) transplantation in adriamycin (ADR)-induced glomerulopathy rats. Methods A total of 90 Sprague-Dawley female rats were randomly divided into three groups:ADR group (n=40,rats were injected via the tail vein with O.25 mg ADR/100 g body weight on days 1 and 21),ADR- MMCs group(n=40,rats were injected via the tail vein with 5×10~6-7×10~6 MMCs 8 weeks after the second ADR administration),control(n=10).All the rats were scarified 8 weeks after MMCsinjection.Pathology and collagen IV expression in renal tissue were examined.Moreover,matrix metalloproteinases 2 (MMP-2) and matrix metallopmteinases 9 (MMP-9) expression in the renal tissue were also detected with immunohistochemistry,and quantity analysis of protein and gene was further demonstrated with Westem blot and RT-PCR analysis,respectively. Results There were no significant differences in tubulointerstitial injury score and glomerulosclerosis degree between ADR group and ADR-MMCs group(P>0.05).Compared with ADR group,collagen Ⅳ and MMP-2 expression decreased, MMP-9 expression incrased in renal tissue of ADR-MMCs group, and the difference was significant (P<0.05). Conclusion MMCs transplantation may have potentially therapeutic effect on renal tissue fibrosis of adriamyein-induced glomerulopathy in rats, and the signaling pathways of MMPs appear to be involved in these processes.

Objective To investigate the effect and possible mechanism of bone marrow stem cell mobilized by stem cell factor (SCF) with granulocyte colony-stimulating factor(G-CSF)on renal peritubular capillary, fibrosis and renal function in unilateral ureteral obstruction (UUO) rats. Methods One hundred and twenty eight healthy male Wistar rats were randomly divided into four groups: Sham group, SCF-G group, UUO group and UUO+SCF-G group. Eight rats of each group were randomly selected and killed on the 5th, 14th, 21st and 28th day. Serum creatinine, CD34 positive cells and factor Ⅷ positive cells in renal interstitium, histopathologic lesion scores of interstitial fibrosis and interstitial pathology in kidney were measured. The mRNA expression of vascular endothelial growth factor (VEGF). and thrombospondin-1 (TSP-1) in the renal cortex was detected. Results (1) The renal interstitial fibrosis anti the loss of peritubular capillary were observed in UUO group after two weeks. (2) The number of bone marrow stem cells homing to renal interstitium in UUO +SCF-G group was significantly higher than that in UUO and Sham groups (P<0.05). (3) The loss of peritubular capillary in UUO+SCF-G group appeared later than that in UUO group (P<0.05). (4) The interstitial fibrosis and tubule injury was milder in UUO+SCF-G group than that in UUO group (P<0.05). (5) The decrease of VEGF mRNA expression of renal cortex in UUO +SCF-G group was seen later than that in UUO group. VEGF mRNA expression in UUO+SCF-G group was higher than that in UUO group. (6) The increase of TSP-1 mRNA expression of renal cortex in UUO+SCF-G group was seen later than that in UUO group. TSP-1 mRNA expression in UUO+SCF-G group was lower than that in UUO group (P<0.05). (7) In UUO and UUO+SCF-G groups, peritubular capillary index was negatively correlated with serum creatinine, interstitial fibrosis and interstitial lesion scores. VEGF mRNA expression of renal cortex was positively correlated with peritubular capillary index, and TSP-1 mRNA expression of renal cortex was positively correlated with peritubular capillary index. Conclusions (1)The loss of peritubular capillary is found in UUO group, and is correlated with interstitial fibrosis and interstitial lesion. (2) Application of SCF with G-CSF can effectively motivate stem cells to injured renal tissue, contribute to decrease the loss of peritubular capillary, lessen interstitial fibrosis and interstitial lesion, and ameliorate renal function. (3) Application of SCF with G-CSF can up-regulate VEGF mRNA expression and down-regulate TSP-1 mRNA expression, which may contribute to promote the repair of endothelial cells and protect peritubular capillary.

To investigate the effect of microRNA-221 (miR-221) on cell viability and apoptosis of hepatocellular carcinoma HepG2 cells. MiR-221 inhibitors and mimics were transfected into HepG2 cells. The expression of miR-221 was detected by real time quantitative RT-PCR. CellTiter-blue cell viability kit, Hoechst 33342/propidium iodide (PI) double staining assay, flow cytometry and Apo-ONE homogeneous caspase-3/7 kit were used to measure cell viability and apoptosis. MiR-221 inhibitors significantly inhibited the cell growth and miR-221 mimics increased cell viability 48 hours post-transfection measured by both CellTiter-blue cell viability kit and Hoechst 33342/PI assay (P is less than to 0.05). There was a positive correlation between these two assays (r = 0.993, P is less than to 0.01). With miR-221 mimics, the number of G1 stage cells (47.67%+/-1.53%) was significantly reduced as compared to the blank control (59.00%+/-1.00%) and the negative control (58.00%+/-1.00%, F = 81.77, P is less than to 0.01), and it was significantly raised in S stage (20.33%+/-1.15%) than in blank control (11.00%+/-1.00%) and negative control (12.00%+/-1.00%, F = 70.9, P is less than to 0.01) with flow cytometry analysis. More cell apoptosis and necrosis were significantly induced by miR-221 inhibitors 48 hours post-transfection detected by both Hoechst 33342/PI assay and flow cytometry PE Annexin V kit (P is less than to 0.05). The result from Apo-ONE homogeneous caspase-3/7 kit was consistent with the above two apoptotic assays, which showed that with miR-221 inhibitors, the activity of caspase-3/7 was significantly enhanced (P is less than to 0.05). MiR-221 contributes to the growth of hepatocellular carcinoma cells and miR-221 inhibition can induce cell apoptosis. miR-221 has the potential to become one of the new molecular targets for liver cancer therapy.
Apoptosis ; drug effects ; Carcinoma, Hepatocellular ; Cell Proliferation ; drug effects ; Hep G2 Cells ; Humans ; Liver Neoplasms ; MicroRNAs ; metabolism

Objective To investigate the influence of two different dose of atorvastatin on the prognosis and endothelial function in post-PCI acute coronary syndrom patients.Methods 92 post-PCI ACS patients were randomly divided into two groups,atorvastatin 20mg and atorvastatin 10 mg group.In each group the patients were treated with atorvasta- tin 20mg or 10mg respectively.After one month we add or decrease the dose of atorvastatin according to the blood lipid level.After 12 month the blood lipid level、FMD、NO、ET、NOS、UAP、AMI were compared between two groups. Results The clinical setting have no significant association between two groups before treating,After treated 1 and 12 month the TC,LDL-C level were significantly decreased as compared with the base level before treating in each group. After treated 1 month,in atorvastatin 20 mg group the TC,LDL-C level were significantly decreased and NO、NO/ET level were significantly higher than those in atorvastatin 10 mg group.During 12 month follow up the incidence of angina pectoris onset and rehospitalization were significantly higher in atorvastatin 10 mg group(P

Objective - - To analyze the prevalence and influencing factors of multi site work related musculoskeletal disorders （ ） Methods WMSDs in surgeons. A total of 102 surgeons from four hospitals were selected as study subjects by convenient sampling method. The Chinese version of Musculoskeletal Disorders Questionnaire was used to investigate the prevalence of ， Results WMSDs in the past one year the related individuals and occupational factors. The total prevalence of WMSDs among （ ）， （ ） （ ） surgeons was 54.9%. The top three sites were neck 48.0% lower back 35.3% and shoulder 32.4% . The prevalence of （ vs ，P ） WMSDs in multiple sites was higher than that in a single site 43.1% 11.8% <0.01 . Multivariate logistic regression ， ， analysis showed that surgeons who smoked were tired at work and had a bent back had a higher risk of developing WMSDs ［ （ - ）， （ - ）， （ - ）， P ］ odds ratios and 95% confidence intervals were 3.66 1.41 9.46 8.33 2.15 32.20 and 18.74 2.14 166.77 all <0.01 Conclusion - after excluding the influence of confounding factors. The prevalence rate of multi site WMSDs among surgeons is ， high and the influencing factors include bad living habits and occupational factors such as working load and working posture.