Objective To study the effect of stromal cell-derived factor-1(SDF-1)/CXCR4 on the proliferation of CD34+ hematopoietic stem/progenitor cells(HSPCs) supported by bone marrow mesenchymal stem cells(MSCs).Methods Rat bone marrow MSCs were plated as feeder layer in long-term cultures(LTC) with bone marrow CD34+ cells in vitro.Cultures were weekly supplemented with SDF-1,anti-SDF-1 antibody,or anti-CXCR4 antibody separately for 5 weeks.The hematopoietic-supporting activity was evaluated by the number of CD34+ cells and colony forming cell(CFC).To assess the effect of SDF-1/CXCR4 on CD34+ cell proliferation cycle,killing assays were carried out and proliferation indexes were calculated.Expression of SDF-1 and CXCR4 in MSCs and CD34+ cells were determined by flow cytometry.SDF-1 in MSC-and CD34+ cell-conditioned medium was also measured by ELISA.Results The number of CD34+ cells,CFC and proliferation indexes were significantly increased in treat-ment with SDF-1(P

Objective:To evaluate the effect of shikonin on the expression of RANTES and chemotactic activity of monocyte in endometriosis.Methods:Established SCID endometriosis models and cultured U937 cells were treated by a series of concentration of shikonin.RANTES transcriptive expression was determined by Real-time PCR,and RANTES secretion was determined by ELISA.Furthermore,Chemotaxis assay in vitro was conducted to elucidate the effect of shikonin on chemotaxis of U937 cells by RANTES.Results:Shikonin improved the RANTES transcription of human endometrium transplanted to SCID mouse(P

OBJECTIVE To explore the incidence of sharp instrument injuries among nurses from the various classes of medical institutions and to analyze the cause and investigate the preventive countermeasures.METHODS To survey the sharp instrument injuries in nursing among 1050 nurses from 50 medical institutions.From 1050 questionaires,1028 were performed.RESULTS Among 1028 nurses from 50 medical institutions,903 nurses suffered different degrees of sharp instrument injuries with 87.84%,of which 40.75% and 31.12% were caused respectively in working age of 6-10 years and 11-15 years.All injury cases added up to 7059,with average of 7.80 times per person and 287(31.78%) cases were with over 10 times.Injuries for ampule in dispensing and clearance of instruments accounted for 70.63% and 15.54%,with the times of 4986 and 1097.Degrees of injury:the light injury of skin accounted for 57.69% with 4076 cases.CONCLUSIONS It is suggested to reform the craft of ampules and safety of instruments continually.Instrument cleaner is recommended if necessary.The key point is to strengthen the education of awareness on occupational protection and do self-protection best,which is sharply important to reduce the incidence of injuries.

Objective To investigate the effect of interferon-γ(IFN-γ) on the expression of indoleamine 2,3-dioxygenase(IDO),and tryptophanyl-tRNA-synthetase (TTS) in thyrocytes; and to study the relevant immunopathological significance in Graves' disease.Methods The expressions of IDO and TTS genes in IFN-γ stimulated Nthy-ori3-1 cell line and human thyrocytes,as well as in human thyroid tissues were determined by realtime quantitative PCR.Results IDO and TTS genes were expressed slightly in both Nthy-ori3-1 cell line and human thyrocytes,and were significantly up-regulated after IFN-γ stimulation(P＜0.01).Compared to healthy controls,TTS mRNA level was higher in thyroid tissues of patients with Graves' disease (P =0.018 2),while IDO mRNA level showed no difference,but was notably correlated with IFN-γ mRNA level (R2 =0.716,P =0.002).Conclusion In the early stage of Graves' disease,thyrocytes may decompose local tryptophan by enhancing the expression of IDO and TTS under IFN-γstimulation,thus inhibit auto-reactive function of lymphocytes and balance excessive autoimmune reaction.

The levels of low-density lipoprotein(LDL)glycation from control group,diabetic HbA1C < 7.0%,and HbA1C>7.0% groups were(17.7±2.31),(34.29±5.73),and(48.79±7.82)Glycogroups/LDL by fluorimetry.The LDL binding to its receptor in three groups were(37.65±5.20),(27.36±4.34),and(15.07± 2.23)ng/mg cell protein measured by enzyme-linked immunoreceptor assay.The glycated levels in two diabetic groups were higher than that in control group,and higher in HbA1C>7.0% group than in HbA1C<7.0% group(all P< 0.01).The results of LDL binding capacity to its receptor were just the opposite.

Objective To evaluate the effects of metformin on thyrotropin(TSH)levels. Methods From the patients with type 2 diabetes mellitus or metabolic syndrome, 48 patients with primary hypothyroidism were enrolled and grouped. 17 patients were treated only with metformin(group A), 19 patients with metformin and stable L-T4substitution(group B), and the remaining 12 patients with antidiabetic drugs(other than metformin)and L-T4(group C). Meanwhile, 20 euthyroid patients with other thyroid abnormalities(group D)and 30 patients without thyroid diseases(group E)served as control. TSH, FT3, FT4, TT3, TT4, and blood glucose were determined regularly in all these subjects. Results After administration of metformin for 12 months, serum TSH were decreased in group A [(5.05±1.07 vs 2.61±0.91)mU/L, P＜0.01] and group B [(2.67±1.03 vs 1.35±0.74)mU/L, P＜0.01]. No difference was found in FT3and FT4in both groups. TSH levels were raised from(1.30±0.71)to(2.58±1.02)mU/L(P＜0.01)within 8～12 weeks in 13 out of 15 patients after metformin withdrawal. Serum TSH and thyroid hormones in the other 3 groups were not significantly changed. Conclusion Administration of metformin may lead to reduction of serum TSH level.

Objective To seauch the ideal management for gross hematuria in autosomal dominant polycystic kidney disease (ADPKD).Methods ADPKD patients who were ever hospitalized and followed up in our department since 1993 were enrolled in the study.Demographic and clinical data were colloected,such as gender,age of gross hematuria,level of renal function,causative factors,management strategies,duration of gross hematuria,blood platelet count,activated partial thromboplastin time,prothrombin time,international normalized ratio,size of kidney cyst and so on.ADPKD patients were divided into different groups according to causative factors or management.The clinical data were compared among groups.Results A total of 905 ADPKD patients were screened,among whom 279 patients ever had gross hematuria (male/female:150/129),One hundred and forty-six patients had integrated therapeutic process records,while only 101patients could provide relevant laboratory examination results.In these 101 patients,gross hematuria was found in any stage of chronic kidney disease (CKD); the average eGFR was (56.4±44.1) mml·min-1 ·(1.73 m2)-1; the duration of gross hematuria was (8.8±8.0) d; no significant difference between male and female in duration of gross hematuria existed [(8.2±7.3) d vs (9.5±8.8) d,P=0.426]; coagulation parameters were all normal.The platelet count was also normal in 91 patients.Duration of gross hematuria among groups divided according to different causative factors was significantly different (P＜0.05).The patients in bed rest group had significantly shorter duration of gross hematuria compared with other groups (P＜0.05).The platelet count,prothromhin time and international normalized ratio were all at similar level in different groups.Conclusions The causative factors in ADPKD patients with gross hematuria should be confirmed as the first step of management strategies.Bed rest is the key point in management.Antifibrinolytic agent is a proper choice in the cases receiving bemostatic drugs.It is unnecessary to use antibiotic agent for prevention.

ed in vitro and in vivo,which was inhibited by aspirin treatment.

Objective To explore the status quo of workplace bullying and job satisfaction among clinical nurses, and to explore the mediating effect of peer support among nurses in the relationship between the above two elements.Methods By convenience sampling, from November 2015 to April 2016, 207 clinical nurses in a comprehensive classⅢ grade A hospital in Fuzhou, were selected and surveyed by a questionnaire on general information, a peer support scale, the negative acts questionnaire-revised (NAQ-R), and job satisfaction scale for nurses. Correlation analysis and regression analysis were conducted to the data collected.Results Workplace bullying was significantly negatively related with peer support among nurses(r=-0.395,P<0.01), and job satisfaction (r=-0.338,P<0.01). Peer support among nurses was positively correlated with job satisfaction (r=0.611, P<0.01). Among nurses, peer support was the mediating variable between workplace bullying and job satisfaction. After introduction of peer support among nurses, influence of workplace bullying on job satisfaction was statistically meaningless (β=-0.148,t=-1.716,P>0.05).Conclusions In the relationship between workplace bullying and job satisfaction, peer support among nurses plays a role as a full mediation. Nursing managers should actively introduce the idea of peer support among nurses, lower workplace bullying, and improve job satisfaction among nurses.