Objective: To prepare arsenic trioxide (As2 O3) albumin microspheres and to analyze their physicochemical properties and in vitro antitumor activities. Methods: As2 O3 albumin microspheres were prepared by emulsification-heat solidification. Physicochemical and the slow-release properties of the microspheres were identified by the electron microscope, thermal stabilization analysis and dynamic dialysis system in vitro. MTT method was used to evaluate the inhibitory effect of the released fluid on human osteosarcoma cell line U-2 OS cells and human lung adenocarcinoma cell line SPC-A-1 cells. Results: The mean diameter of the microspheres was (156 ± 3.56) μm (ranging 56. 4-256. 7 μm), with the AS2 O3 content being (55.22±11.19)% and t1/2 of release time being 23.34 h. The slowly released fluid showed a significant inhibitory effect on U-2 OS and SPC-A-1 cells. Conclusion: As2 O3 albumin microspheres prepared in the present study have satisfactory physicochemical, slow-releasing, and tumor-inhibition properties.

Objective: To study the influence of anti-tumor drug incorporation on the physicochemical properties of calcium phosphate cement(CPC). Methods: Methotrexate (MTX), epirubicin (EPI), hydroxy camptothecin (OH-CPT), and arsenic trioxide (As2O3) were incorporated, each in a proportion of 2%, 5%, and 8%, into the powder-phase CPC. Untreated CPC was taken as control. The setting time, compression strength, and the microstructure of the resultant products were evaluated and tested. Results: Compared with control group, the setting time was significantly prolonged when 2% EPI was incorporated into CPC (P<0.05), and the maximum compression strength was significantly decreased when 5% OH-CPT and 8% MTX, EPI were incorporated into CPC (P<0.05). Electron microscope showed no significant change in the crystal structure after incorporation of the drugs. Conclusion: CPC is an ideal anti-tumor drug delivery material. The changes of physicochemical properties of CPC must be considered when anti-tumor drugs are incorporated into CPC for clinical application.

Cancer stem cells (CSC) are related to the progression,recurrence and drug-resistance of tumor.MicroRNAs have been reported to correlate to the self-renewal of cancer cells.They can regulate cell cycle and thus interfere with the cell fate.Recent publications have clafified that microRNA can effect on cancer stem cells' self-renewal either by regulate targeted genes directly,or through wnt,notch and Hedgehog pathways.

Objective To compare the infection free and overall survival between first and subsequent tunneled cuffed hemodialysis catheters in geriatric patients.Methods The study involved57 geriatric patients [32 male,25 female; mean age (72.4 ± 6.7) years]undergoing maintenance hemodialysis in our blood purfication unit over a period of 72 months.Among a total of 131 catheters and 2686 catheter months including 57 first catheters and 74 consecutive catheters,48 wire guided exchange (WGE) and 26 removal and replacement (RAR),55/131 (42.0％) catheters were exchanged because of catheter-related bacteremia (CRB),37131 (28.2％) exchanged because of malfunction or cuff extrusion,39 /131 (29.9％)catheters were removed electively or was still functional at the end of the study period.Results One-year survival rates for first and consecutive catheters were 35.8％ and 28.4％,respectively.There was no difference in the overall survival between first catheters group and subsequent catheters group [(29.8±7.9)months vs.(28.7±6.0)months,t=0.711,P=0.443].However,infection free survival of first catheters group was significantly prolonged in comparison with that of subsequent catheters group [(13.1 ± 3.5) months vs.(11.6±2.7) months,t =2.415,P=0.018].The overall and infection-free survival in WGE group were not different with those of RAR group [(28.2 ± 7.2 ) months vs.( 28.5 ± 5.8 ) months,(11.1±3.1)months vs.(12.2±2.1)months,t=-0.163,0.103,P＞0.05].The infection free survival of first catheters group and WGE group was prolonged in comparison with that of in situ group[(13.1±3.5)months and (11.1±3.1)months vs.(8.2±2.1)months,t =7.602,5.601,P＜0.05].Conclusions WGE is safe and effective in the elderly patients if the tunnel and the exit site are not infected and has the potential benefit of preserving the vascular access site.

Antibodies ; immunology ; Graft Rejection ; drug therapy ; immunology ; prevention & control ; Graft Survival ; immunology ; Humans

Objective To study the relationship between coronary artery disease (CHD ) and interleukin-6 (IL-6), TNF-α and IL-10. Methods Patients with CHD were included in CHD group (n=628) and patients without CHD con?firmed by coronary angiography were selected in control group (n=540) . The recorded data included age, body mass index (BMI) and serum levels of glucose (GLU), total cholesterol (TC), triglyceride (TG), high density lipoprotein-cholesterol (HDL-C) and low density lipoprotein-cholesterol (LDL-C). Meanwhile serum levels of IL-6, TNF-α, IL-10 were determined by ELISA. Results Serum levels of BMI, LDL-C, TG were higher in CHD group than those in control group(P<0.01). The serum level of HDL-C was significantly lower in CHD group than that in control group(P<0.01). Serum levels of IL-6(P<0.05)and TNF-α(P<0.01)were higher in CHD group than those in control group. The serum level of IL-10 was significant?ly lower in CHD group than that in control group(P<0.01). Conclusion IL-6 and TNF-αare involved in the develop?ment of CHD. IL-10 can inhibit inflammation and protect vessel integrity.

The present paper is a morphological description of the chromosomes of the mouse, Mus musculus, based on the observations of the metaphase chromosomes of both bone marrow cells and spermatogonial cells. Chromosome morphology is found to be essentially the same as those described by the previous investigators. The systematic measurements of the chromosomes have also been presented.

Objective To investigate the value of detecting BK virus(BKV)in urine of renal al- lograft recipients for the diagnosis and treatment of BKV infection.Methods Using polymerase chain re- action(PCR)method combined with DNA sequencing,61 urine samples from renal allograft recipients,30 u- fine samples from dialytic patients and 30 urine samples from healthy volunteers(controls)were detected. The results were compared among the 3 groups.Results The BKV positive rate in renal allograft recipi- ents was 36.1%,compared with 13.3% in dialytic patients(P＜0.05)and 0.0% in controls(P＜0.05). One renal allograft recipient who was positive for BKV developed ureteral obstruction.The BKV positive rate was 40.9%(9/22)in renal allograft recipients with rejection episode,compared with 33.3%(13/39)in the recipients without rejection episode(P＞0.05);and the BKV positive rate was 36.0%(18/50)in the recip- ients with normal graft function,compared with 36.4%(4/11)in the recipients with abnormal graft function (P＞0.05).Conclusions Renal allograft recipients are the high risk population who may develop BKV viruria.There is no correlation between recipients with or without rejection episode and BKV viruria,and also no correlation between recipients with normal or abnormal graft function and BKV viruria.Detection of BKV in the urine of renal allograft recipients is helpful in differential diagnosis of BKV induced ureteral obstruc- tion,and PCR method for detecting BKV DNA can be used to screen for BK virus-associated nephropathy (BKVAN).

Objective To study the psychological changes and the effect of psychological intervention and to discuss the influence of psychological rehabilitation on carcinoma patients after comprehensive interventional therapy.Methods 100 carcinoma patients were divided into two groups randomly:the psychological intervention group(50 casea) received both psychological intervention therapy and comprehensive intervention therapy;the control group (50 cases) received only comprehensive interventional therapy;Curative effects were assessed with the Symptom Checklist90(SCL-90) ,the Self Rating Depression Scale(SDS) and the Self Rating Anxiety Scale(SAS) for each patient. Results For the psychological intervention group, SCL-90 scores after therapy was significantly lower than that before therapy ( P < 0. 05 ), and were also significantly lower than that ( without anxiety agent) of the control group. The scores of SDS and SAS in post-therapy patients were significantly lower than that of pre-therapy patients in the psychological intervention group. The scores of SDS had no statistical difference between post-therapy patients and pre-therapy patients in the control group. The scores of SAS in post-therapy patients was significantly lower than that of pre-therapy patients in the control group. Both scores of SDS and SAS in the control group were significantly higher than that of the psychological intervention group after therapy. Conclusion Psychological intervention for carcinoma patients after comprehensive interventional therapy played an promotional role in psychological rehabilitation in the community.

Female ; Humans ; Infant ; Male ; Ultrasonography ; Urachus ; abnormalities ; diagnostic imaging