In the load capacity test of CT diagnosis table top, by analyzing the easy destroy area and related test data for the table top, using a simple mechanical auxiliary support structure in local area of the table top to solve the insufficient loading strength problem of table top and obtain significant results during the actual product usage.
Tomography, X-Ray Computed ; instrumentation ; methods

This article describes a phantom holder in CT couch which adjusted easily and accurately, installed easily. The holder mainly include removing and locking equipment between phantom holder and table top, move horizontally equipment between left and right, rotating equipment between left and right. After holder and table top fixed one part, holder with phantom can move horizontally, front and back, rotate between left and right in a small angle, in order to make operator test phantoms accurately and easily. At the same time, this phantom holder realized free adjustment after first adjustments, which shortened operator work time.
Equipment Design ; Tomography, X-Ray Computed ; instrumentation

Objective To study the effect of Xinji Huoliyin on the apoptosis of myocardial cell and apoptosis-related gene expression of experimental dilated cardiomyopathy rats, and explore its mechanism. Methods Sixty animals were randomly divided into 6 groups. Dilated cardiomyopathy model was made by injecting adriamycin. Experimental rats were given Xinji Huoliyin and Huangqi Shengmaiyin respectively. The genic expression of p53 and Fas was tested by S-P immunohistochemistry technique after 4 weeks. Results The apoptosis rate of myocardial cell of model group was higher than that of normal group (P

The art of warm disease of TCM not only has abundant clinical experience,but also has a profound theoretical thinking,and it starts with its unique concept category and logical system,and riches and enriches,updates and develops on the basic of this,and goes along the road of independent development,has a distinct characteristics.This paper preliminarily studies on wei qi ying and xue of the art of warm disease of TCM from meaning,development of history,nature and action,et al.And it provides references of ideas and methodologies for the development and innovation of the art of warm disease of TCM.

Objective:To explore the role of osteopotin in lupus nephritis (LN).Methods:Sera osteopotin( OPN )levels were measured by enzyme linked immunosorbent assay in 90 patients with systemic lupus erythematosus (SLE),15 non-SLE patients with renal impairment,and 30 healthy volunteers.OPN mRNA expression in peripheral blood mononuclear cells (PBMCs) was also investigated with reverse transcription-polymerase chain reaction semi-quantitative method.Results:The expression of OPN was significantly higher in active LN groups than in all other groups(P0.05).Conclusion:The expression of PBMCs OPN mRNA is up regulation in active SLE.Meanwhile,its expression levels are correlated with the activity of LN.

Objective To investigate the relationship between body mass index (BMI) and long-term survival in patients with chronic obstructive pulmonary disease (COPD).Methods A retrospective cohort study was conducted in 1124 patients with completed data among 1528 hospitalized patients with COPD.Vital status was ascertained at death registry and civil affairs department.Clinical characteristics were acquired from medical record.Patients were divided into 4 groups according to the quartile of BMI:BMI＜18.9 kg/m2 (group A),BMI from 18.9 kg/m2to 22.7 kg/m2 (group B),BMI from 22.8 kg/m2 to 26.2 kg/m2 (group C),BMI＞26.2 kg/m2 (group D).The differences in survival curves were compared between groups by using log-rank test.The relationship between all-cause mortality and BMI was evaluated by Cox proportional hazards regression model.Results The median BMI of 1124 patients was 22.7 kg/m2 [(18.9-26.2) kg/m2].270 patients (24.0％) had BMI＜18.5 kg/m2.162 patients (14.4％) died during follow-up.There was significant difference in the survival curves in the four groups (x2 =7.97,P＜0.05).Survival rate was highest in group C and lowest in group A.After adjustment for other factors,BMI was an independent risk factor for predicting long-term survival.The survival rate was respectively decreased by 41 ％ and 35 ％ in group C and D as compared with group A.Conclusions Weight loss is comman in COPD patients.BMI is an independent risk factor for predicting long-term survival.BMI is easily acquired and stable,which is especially suitable to evaluate the prognosis of patients with acute exacerbation.

Objective To evaluate the relationship between the expressions CyclinD1 and nm23H1 and the response to neoadjuvant chemotherapy (NACT) in cervical carcinoma. Methods 100 patients with cervical cancer were enrolled in this study. These patient were randomly divided into two groups. The observed group were treated by neoadjuvant chemotherapy followed by radical hyterectomy and lymphonectomy. The other 50 cases were treated by operation as control group. The expression of CyclinD1 and nm23H1 were examined by immunohistochemistry using post-operation specimens. Results The total response rate of neoadjuvant chemotherapy was 75 %( CR+PR). The expression rate of CyclinD1 was 76 % in experimental group, and 54 % in control group(P 0.05). Conclusion The neoadjuvant chemotherapy was helpful for the patients with local advanced stage of cervical carcinoma. CyclinD1 may be one of the path of NACT, but nm23H1 may not related to NACT.

ObjectiveTo investigate the effect of SalB on bone marrow-derived mesenchymal stem cells (BMSCs) apoptosis induced by hypoxia and serum deprivation (hypoxia/SD) in the vitro. Methods BMSCs were cultured in the vitro and randomly divided into control group, hypoxia/SD group and SalB group.SalB group was composed by four groups and were pretreated by complete medium with 0.1、 1、 10、 100 mg/L SalB for 1 hour. And after that they were washed with phosphate buffer for 2 times, added by IMDM with 0.1、1、 10、 100 mg/L SalB and cultured with hypoxia/SD group together in the same condition of hypoxia/SD for 6hours. The control group was cultured for 6 hours in the condition of aerobic and enough serum. Apoptosis was detected by Hoechst33342 staining with inverted phase contrast, fluorescence microscope and Annexin V/PI dual-color flow cytometry. Results Significant apoptosis of BMSCs was induced by hypoxia/SD in the vitro.The early apoptosis of BMSCs induced by hypoxia/SD was significantly decreased by SalB of 0.1、 1、 10 mg/L(P＜0.05) . Conclusion0.1、 1、 10 mg/L SalB can decrease the early apoptosis of BMSCs induced by hypoxia/SD.

Objective To investigate the effects of signal pathway inhibitors PD98059 and LY294002 on cell proliferation, apoptosis, expressions of phosphorylated extracellular signal-regulared kinase (p-ERK) and phosphorylated protein kinase B ( p-Akt) in endometrial carcinoma xenografts. Methods Human endometrial carcinoma Ishikawa cells were cultured in vitro. The effects of PD98059 and LY294002 on proliferation, apoptosis, and cell cycle distribution of endometrial cancer cells were detected by monotetrazolium ( MTT) assay and fluorescence-activated cell sorting technique. The models of xenografted tumor were established by the subcutaneous inoculation in 24 nude mice, and then they were randomly divided into 4 groups ( n = 6) , normal saline group, PD98059 group (PD group) , LY294002 group ( LY group) or PD98059 + LY294002 group ( PD + LY group) by intraperitoneal injections, respectively. The anti-tumor efficacy was evaluated by measuring tumor volume and tumor growth status. The histopathological change of tumor specimens was observed using HE staining and terminal deoxynucleotidyl transferasemediated dUTP-digoxigen in nick and labeling method (TUNEL) testing and the expression levels of p-ERK and p-Akt were detected by immunohistochemistry method. Results ( 1) The proliferation of Ishikawa cells were suppressed after treated by PD98059 and ( or) Y294002, in which A570 values of cells decreased showing both time-dependent and concentration-dependent manner ( LY294002: Fgroup = 9. 801, P = 0. 002; Ftime = 10. 398, P = 0. 001. PD98059: Fgroup= 8. 213, P = 0. 015; Ftime = 6. 839, P = 0. 036). Cell cycle distribution analysis revealed that percentage of Ishikawa cells at G0/G1 phase(Ftime =35.049, P= 0.004; Fgroup = 32. 024, P ＜0. 01) increased and percentage of S phase cells (Ftime = 7. 789, P = 0. 049; Fgroup = 30. 132, P ＜0. 01) decreased significantly. The percentage of apoptotic cells increased significantly among PD group, LY group and PD + LY group, in which there were significant difference [(63. 3 ±0.5)% vs (30. 7 ± 20. 1) % vs(40. 8 ± 1. 3) % ; F = 621. 059, P ＜ 0. 01]. (2) Compared with the control group, the increasing of transplanting tumor volume in the treated groups were obviously ( F = 23. 545 , P ＜ 0. 01) , and the inhibited rate of the tumor was higher in PD + LY group than that in PD group or LY group [(68 ± 9 ) % vs ( 32 ± 16 ) % or ( 38 ± 17 ) % ; F = 10. 283 , P ＜ 0. 05]. ( 3 ) HE staining shown that there were different degrees of necrosis for endometrial carcinoma cell in different groups. The apoptosis of tumor cells were significantly increased in treated groups by TUNEL testing [(13. 7 ± 1. 5)% , ( 14. 1 ± 1. 2)% , (29. 0 ± 1. 8 ) % ; F = 320. 344, P ＜ 0. 01]. Immunohistochemistry results demonstrated that the expressions of p-ERK and p-Akt in treated groups were lower than that in control group, of which LY + PD group was the lowest one. Conclusion The signal pathway inhibitors PD98059 and LY294002 could inhibit the growth of human endometrial carcinoma in vivo and in vitro, in which may induce cell apoptosis.

Objective Cellular response to estradiol is mediated both by estrogen receptor (ER) binding to estrogen response element (ERE) and by non-nuclear actions like activation of signal transduction pathways such as mitogen activated protein kinase (MAPK) pathway. However, the signal transduction of estrogen involving phosphatidylinositol 3-kinase-protein kinase B (PI3K -PKB) is not clear in endometrial carcinoma. Our purpose was to study if PI3K-PKB signaling pathway could be activated rapidly by 17?-E 2 through non-nuclear action and also, whether PI3K inhibitor, LY294002, could inhibit such non-nuclear action of 17?-E 2 in endometrial carcinoma cell line Ishikawa. Methods Levels of phosphorylated PKB(Ser473 site, p-PKB) and total PKB were examined by western blotting in Ishikawa cells after stimulation with 17?-E 2 at 1?10 -6 mol/L for different time periods and at varied doses for 30 min. Optimal time and appropriate dose for 17?-E 2 to activate PKB in Ishikawa cells were observed. Inhibitory effect of LY294002 on activation of PKB induced by 17?-E 2 was also studied. p-PKB/PKB ratio was used to indicate levels of activation of PKB. Results p-PKB/PKB at 15 min (0.533?0.029) was significantly higher than the control (0.361?0.029, P 0.05, 0.05,