Objective:To establish a three-dimensional visualization model of craniofacial hard and soft tissues with data based on CT. It could be used in clinic as diagnosis and operation simulation. Methods:Original data of patients' craniofacial hard and soft tissues by CT scanning was transferred into the system. After 2-D and 3-D image preprocessing, advanced Marching Cubes Algorithm (Marching Tetrahedron Algorithm) was used for surface fitting;3-D volume rendering was accomplished by footprint method. Results: The whole craniofacial frame and its surface could be observed clearly in reconstructed 3-D Model. Furthermore, the 3-D Model could be seen from any sight angle and sectioned in any direction and place. Doctors could observe the characters of craniofacial deformity for more details. Conclusion: The problems of X-ray reflection of metal brackets, control of X-ray dosage and time spending in 3-dimensional visualization model reconstruction were solved. This model could be used in clinic for diagnosis and operation simulation.

To study and compare the protective effects of Cordyceps sinensis from different habitats on acute injury of hepatic tissue induced by carbon tetrachloride ( CCl4 ) . Methods:The rat model of acute injury of hepatic tissue induced by CCl4 was established. The biochemical indicators of alanine aminotranferease ( ALT) and aspartate aminotransferease ( AST) in the serum and superoxide dismutase ( SOD) and L-glutathione( GSH) in the liver tissue were detected, and the liver tissue HE staining was used for the histopathology determination. Results:Compared with those in the model group, the levels of AST and ALT in the serum were sig-nificantly reduced, the levels of SOD and GSH in the liver tissue were notably increased, and the necrosis of liver cells was improved in Cordyceps sinensis groups at low, medium and high dose from different habitats (P<0. 05), however, the differences between the two different habitats were not significant (P>0. 05). Conclusion: Cordyceps sinensis from Qinghai and Tibet shows some positive differences in the protective effect on the acute chemical liver injury induced by CCl4 in rats,however, the differences are not remarka-ble.

Objective To investigate the effects of shRNA targeting a disintegrin and metalloproteinases 17(ADAM17)on the proliferation of human breast cancer MCF-7 cells in hypoxia environment.Methods The four specific ADAM17-shRNA se-quences aiming at ADAM17 were designed,transfected into MCF-7 cells by electroporation,and cultured in hypoxia environment. The experiment was divided into the control group (blank phosphate buffer solution,PBS),nonsense sequence group (transfected with ADAM17-shNC)and shRNA transfection group (transfected with ADAM17-shRNA,the highest silencing efficiency of shR-NA was selected for following experiments).Real-time PCR was used to detect the expression of ADAM17 mRNA.The prolifera-tion ability and cell cycle change of MCF-7 cells were detected by iCELLigence and flow cytometry (FCM),respectively.Results Compared with control group and nonsense sequence group,the four ADAM17-shRNA transfection groups all had the silence effect on ADAM17 gene expression (P <0.05 ),the difference was statistically significant(P <0.05 ),particularly shRNA1219 had the highest inhibitory rate (F =5.11,P <0.01 ).The cellular proliferation ability and cell growth speed in the shRNA transfection group were significantly decreased compared with the control group and nonsense sequence group (P <0.05).Most cells of shRNA transfection group remained in the G0/G1 phase (73.35 ± 2.45 ),which in the control group and nonsense sequence group was (62.56±2.35)and (62.68 ±1.20)respectively,the difference was statistically significant(P <0.05).The cell cycle progression was significantly delayed.Conclusion ADAM17-shRNA inhibits the proliferation of MCF-7 cells under hypoxic environment.

Objective To investigate the therapeutic effects and adverse reactions of decitabine combined with IA or CAG regimen in the treatment of elderly patients with acute myeloid leukemia.Methods A retrospective analysis was made to observe the therapeutic effects and adverse reactions of 47 elderly patients with acute myeloid leukemia,who were divided into DAC+IA group (17 cases) and DAC+CAG group (28 cases) according to the different chemotherapy.Results In DAC+IA group,the rate of complete remission was 29.4 ％ (5/17),the rate of partial remission was 35.3 ％ (6/17),the effective rate was 64.7 ％ (11/17).In DAC+CAG group,the rate of complete remission was 26.7 ％ (8/30),the rate of partial remission was 30.0 ％ (9/30),the effective rate was 56.7 ％ (17/30),the difference between the two groups was not statistically significant (x2 =0.227,P =0.716).In DAC+IA group the median remission time and the median suvival time were 4.0 and 8.1 months,respectively.And they were 4.0 and 8.1 months,respectively,in DAC+CAG group.No significant difference was showed between the two groups (P value was 0.835,0.266,respectively).Conclusions Compared with decitabine combined with CAG regimen,decitabine combined with IA regimen has similar effect and can be well tolerated.Accordingly,decitabine combined with IA regimen can be used as first-line treatment for elderly patients with acute myeloid leukemia.

Objective To explore the efficacy and feasibility of idarubicin combined with medium-dose arabinoside in intensive chemotherapy for acute myeloid leukemia (AML). Methods Fifty remittent patients with induced chemotherapy who underwent the intensive consolidation therapy with medium-dose arabinoside from January 2010 to January 2015 in hematology department of General Hospital of Beijing Military Area were considered as the treatment group. The single arabinoside (2 g/m 2, 1/12 h, d1-3) treatment for 50 cases in the same period were considered as the control group. Two groups were performed with 6 courses sequential. There were 28 males, 22 females in the treatment group, and average age was 27.6 years (18-52 years), with 3 cases of M 1, 27 cases of M2, 8 cases of M4, 12 cases of M5. In the control group, there were 30 males, 20 females, and average age was 26.8 years (16-50 years), with 2 cases of M1, 30 cases of M2, 8 cases of M4, 10 cases of M5. Then the complications and disease-free survival of two groups were observed respectively. Results Follow-up was done until June 2015. In the treatment group, 1 case died of pulmonary infection, 2 cases died of septic shock and 3 cases died of pulmonary infection, 1 case died of septic shock in the control group. The treatment related mortality of both groups were 6 % (3/50), 8 % (4/50), the related relapse rates were 32 % (16/50), 52 % (26/50), the disease-free survival rates were 62 % (31/50), 40 % (20/50) respectively in two groups. Conclusion Compared with the single arabinoside, the intensive consolidation therapy with medium-dose arabinoside and idarubicin for the treatment of AML has gained lower relapse rate and the related mortality, and the DFS rate has been improved significantly, which need further clinical application.

Objective To evaluate the relationship between the amount of grafted cells and the incidence of acute graft versus host disease (aGVHD) after haploid hematopoietic stem cell transplantation (haplo-HSCT). Methods Data of 68 patients who underwent haplo-HSCT from Jan 2009 to Dec 2013 were analyzed retrospectively. Influences of different factors on the incidence of Ⅲ-Ⅳ degree of aGVHD after HSCT were evaluated. Results 68 patients including 42 males and 26 females were 5/10-9/10 HLA match with 19 father donors, 24 mother donors, 16 sibling donors and 9 children donors. 51 patients not suffered Ⅲ-Ⅳdegree of aGVHD included 32 males and 19 females with the mean age of 20 years old (5-55 years old). 17 patients sufferedⅢ-Ⅳdegree of aGVHD including 10 males and 7 females with the mean age of 23 years old (5-54 years old). There were no significant differences in the amount of the grafted mononuclear cells (MNC) and CD34+cells, and the white blood cell counts (WBC) and platelet count (Plt) recovered time between two groups (P>0.05). However, MNC number was related to CD34+cell number (P<0.05) and WBC recover time (P<0.05), and the CD34+cells number was related to WBC and Plt recover time (P< 0.05). Conclusion The incidence of Ⅲ-Ⅳ degree of aGVHD is unrelated to the amount of grafted MNC, and CD34+cells.

Objective To explore the preventative effect of donor peripheral blood stem cell (PBSC) infusion mobilized by granulocyte colony-stimulating factor (G-CSF) for the relapsing patients with leukemia after haplotype hematopoietic stem cell transplantation ( HSCT) , as well as its therapeutic effect and safety. Methods G-CSF was given at 5-10 μg · kg-1 · d-1 to donor and PBSCs were obtained on day 5 and frozen and allotted for storing. PBSC infusion was given to all the 20 patients on day 90 after HSCT,and the second treatment was given to 4 patients on day 30 after the first infusion. The occurrence of graftversus-host disease ( GVHD) , relapse rate of high risk leukemia and long-term survival were evaluat after PBSC infusion. Results A total of 19 patients had acute GVHD after PBSC infusion for a median of 25 (12-60) months, 4 of them were ≥ degree Ⅲ. The cumulative incidence rate was 22.9%, and all of them accepted PBSC infusion twice. Thirteen patients had assessable chronic GVHD, 10 of them were restricted,and no one died of it. Nine patients died of relapse of leukemia. The remaining 11 patients survived leukemia free, including 4 with chronic myelogenous leukemia, 4 with acute myeloid leukemia (AML) , 1 with lymphoma-leukemia and 2 with myelodysplastic syndrome-AML (MDS-AML). Kaplan-Meier analysis showed the disease free survival rate of 2-year was 52. 5%. Conclusion The prophylactic donor PBSC infusion mobilizing with G-CSF is effective, safe and feasible for the relapse of leukemia.

Objective:To investigate and evaluate the effect of antibacterial agents clinical use and management training for medi-cal institutions in Hubei province in order to promote rational antibacterial drug use. Methods:A questionnaire was designed, inclu-ding basic conception, medication principle, mechanism and medication feature etc. The data were studied by SPSS 13. 0 software to analyze the knowledge level of antibacterial agents in medical staffs. Results: Medical staffs had good acquisition in the knowledge points involved in choice questions. The correct percentage of each scoring in essay questions differed considerably within the range of 7. 88%-99. 01%. Management rules could be well understood, while the definition of antibacterial drugs and the difference between antibacterial drugs and antibiotics were paid little attention. Conclusion: The overall knowledge level of rational antibacterial agents use in the trainees is promising with comprehensive understand of the management rules. It's necessary to distinguish antibacterial a-gents from antibiotics more clearly.

BACKGROUND:Alogeneic hematopoietic stem cel transplantation (alo-HSCT) is an effective mean to cure severe aplastic anemia, and especialy haplotype transplantation is regarded as a transplantation system with Chinese characteristics, and rank at the international leading level. OBJECTIVE:To explore the patterns of haplotype alo-HSCT as a new immune tolerance method for severe aplastic anemia and to solve the transplantation rejection and graft-versus-host disease. METHODS:Twelve patients with severe aplastic anemia who underwent haplotype alo-HSCT at the Department of Hematology, General Hospital of Beijing Military Area, China from April 2013 to May 2014 were enroled. Al these patients received the new regimen of inducing immune tolerance through the application of high-dose cyclophosphamide (400 mg/m2, consecutively 3 days before transplantation; 50 mg/kg, consecutively 3 days after haplotype transplantation). RESULTS AND CONCLUSION:The median time of neutrophil recovery was 17 (13-21) days, and the median time of platelet recovery was 21 (15-31) days. After transplantation, there were one case of degree II acute graft-versus-host disease and one case of chronic graft-versus-host disease, both of which were controled. The folow-up time was 6 months at least, and the median time was 11 months. During the folow-up, one case died of rejection reaction and one case died of severe lung infection. These findings indicate that the new method of inducing immune tolerance with high-dose cyclophosphamide after transplantation for severe aplastic anemia has significant effects in reducing graft-versus-host disease and transplantation-related mortality rate.

OBJECTIVEThis study aimed to investigate the value of child oral health for Chengdu parents, their intentions, and factors influencing their decision to acquire oral insurance coverage for their childrens.

METHODSA total of 562 Chengdu parents were interviewed using questionnaires by convenient sampling, and the results were analyzed using SPSS 20.0.

RESULTSThe age of children (B = -1.741, P = 0.004), age of parents (B = 2.031, P = 0.003), level of oral discomfort (B = 0.569, P = 0.000), incurring/not incurring oral care expenses in the previous year (B = 1.897, P = 0.014), the last time parents' had teeth cleaned (B = 0.777, P = 0.006), and acquiring/not acquiring commercial insurance coverage (B = 1.632, P = 0.031) significantly influenced the intention of acquiring child oral insurance.

CONCLUSIONChild oral health, health and insurance awareness of parents, and other factors influenced the intention of parents to purchase oral insurance coverage for their children, which were significant to establish pediatric dental insurance.

Child ; China ; Dental Care ; Health Expenditures ; Humans ; Insurance, Dental ; economics ; Oral Health ; economics ; Parents ; Surveys and Questionnaires