Objective: To examine effects of Platycodon grandiflorum (JG), Glycyrrhiza uralensis Fisch (GC) or the compound of JG with GC on the growth of cariogenic and periodontopathic bacteria in vitro . Methods: JG,GC and the compound were extracted with ?=65% ethanol respectively. The minimal inhibitory concentration(MIC)and minimal bactericidal concentration (MBC) of JG, GC or compound against S.mutans MT818, S. sobrinus 6715, P.gingivalis 381 and B.forsythus 43037 were measured by drug sensetivity test.Results: JG showed no effect on the growth of oral pathogens tested;GC inhibited S.mutans MT 8418 and S.sobrinus 6715 with MIC of 3.91 mg/ml.The compound inhibited the microorganisms with the MIC of 1.96 mg/ml against S.mutans MT8148 or S.sobrinus 6715, 3.91 mg/ml against P.gingivalis 381, 7.81 mg/ml against B.forsythus 43037 respectively.Conclusion: The compound of JG and GC has stronger inhibition and bactericidal effects on oral pathogens than the single medicine.

Objective To construct TIZ gene RNA interference plasmid,as well as study the biological effects of down-regulating of TIZ gene on ovarian cancer cells.Methods According to the mRNA sequence of TIZ on GenBank,3 pairs of small interference RNA (siRNA) for TIZ gene expression were designed and introduced into SKOV3 cells by liposome transfection reagent; the real-time quantitative PCR (QRT-PCR) was used to detect the interference efficiency and selected the most efficiency siRNA segment;pGPU6/GFP/Neo carrier was used to construct pGPU6/GFP/Neo-siRNA-TIZ-573 restructured interference plasmid,introduced into SKOV3 ccll (sh-TIZ-573/SKOV3).The cell growth curves were made by methyl thiazolyl tetrazolium (MTT) method.The clonogenicity efficiency was observed by clony formation test.The cell cycles were measured by flow cytometry (FCM).The ability of invasion,metastasis and adhesion of ovarian cancer cells were detected by the matrigel invasion assay,transwell migration assay and adhesion assay,respectively.Results QRT-PCR results showed that ovarian cancer SKOV3 cells which transfected by recombinant plasmids pGPU6/GFP/Neo-siRNA-TIZ-573 could down-express TIZ gene.The cell growth curves,FCM and clony formation tests showed that the growth and proliferation of sh-TIZ-573/SKOV3 cells were significantly speeded up compared with the control cells (P ＜ 0.01).There was no significant difference in cell invasion,migration and adhesion between sh-TIZ-573/SKOV3 cells [(48.5 ± 1.7) ％,(53.6 ±3.4)％,(64.9 ±5.0)％,respectively] and the control cells (P ＞0.05).Conclusion The growth of ovarian cancer cells could be speeded up by down-expressing of TIZ gene,which TIZ gene may be play a biological role as a tumor suppressor gene.

OBJECTIVE To investigate the value of fibrobronchoscopy and bronchoalveolar lavage in etiologic diagnosis of pneumonia in immunocompromised patients.METHODS The clinical document and results of fibrobronchoscopy and bronchoalveolar lavage in 36 immunocompromised patients with pneumonia were retrospectively analyzed,whose conditions were mainly after organ transplantation and hematologic neoplasia.RESULTS Through fibrobronchoscopy and(or) bronchoalveolar lavage,22 cases(61.1%) were etiologically diagnosed.In 19 cases taking cytomegalovirus(CMV) quantitative PCR test of both peripheral blood and BALF,the positive rate of blood and BALF was 14.3% and 42.9%,respectively(P

Objective To detect the frequency of micronucleated polychromatic erythrocytes(fMNPCE) in mice bone marrow after irradiated with X-ray by flow cytometer(FCM) to study whether fMNPCE detecting method could become a rapid biodosimeter for early radiation damage. Methods BALB/c mice were randomly assigned to receive the X-ray irradiation at dose of 0.5,3.0,6.0 Gy(n=4 for each irradiation dose),and the bone marrow was collected in 6,12,24 h after irradiation.Another 4 mice were intraperitoneally injected with cyclophosphamide twice as positive control,of which the bone marrow was collected in 42 h after intoxication began and 4 treated with spurious radiation as normal control.Results fMNPCE in mice bone marrow increased remarkably in 24 h after exposure to 0.5 Gy X-ray(P

Objective To explore the application of LIS management group in hospital software and hardware management.Methods The objective,responsibilities and management procedure of hospital LIS management group were introduced,and its effects were studied in hospital software and hardware management.Results Hospital LIS management group optimized LIS management procedure,decreased fault rate and shortened the time for fault handling.Conclusion LIS management group promotes hospital digitalization and clinical laboratory department management.

BACKGROUND: Under specially physical environment, for example weightlessness, metabolism of bone tissue may have remarkable changes; however, osteoblast is a core of bone metabolism and bone formation, so it is very sensitive to changes of gravity environment.OBJECTIVE: To observe the effects of simulated weightlessness on bone marrow stromal cell count and osteogentic capacity of weight bearing bone in rats so as to reveal the mechanism of bone loss.DESIGN : Randomized pairing and controlled study.SETTING: College of Aerospace Medicine and Department of Pathology of Stomatology College, the Fourth Military Medical University of Chinese PLA.MATERIALS: A total of 20 adult healthy male SD rats were selected in this study. At the beginning of experiment, rats based on their body mass were randomly divided into control group and suspension group with 10 in each group. Alkaline phosphatase kit was provided by Beijing Zhongsheng Bioengineering High-technological Company.METHODS: The experiment was carried out in the Department of Pathology, Collage of Stomatology, the Fourth Military Medical University of Chinese PLA from November 1999 to July 2000. Rats were randomly divided into tail suspension group and control group with 10 in each group. Rats in the tail suspension group were given tail suspension for 28 days. Their heads maintained 30° low position, and their hindlimbs freely suspended and were not given weight loading. While, rats in the control group were fed normally. At the end of experiment, bone marrow stromal cells were obtained from femur for primary and transferring cultures.MAIN OUTCOME MEASURES: Cell counting and methylthianolyldiphenyl-tetrazolium bromide (MTT) assay were used to draw growth curve of cells in primary and transferring cultures and to measure activity of alkaline phosphatase and forming quantity of mineralized nodules in vitro.RESULTS : ① Activity of alkaline phosphatase: Activity of alkaline phosphatase of cells in the primary and transferring cultures in the suspension group was lower than that in the control group, and there was significant difference between them (P＜0.05). ② Forming quantity of mineralized nodules: Forming quantity of mineralized nodules in the suspension group was less than that in the control group, and there was significant difference between them (P＜0.05). ③ Cell growth: Growth curve of femoral stromal cells in primary and transferring culture manifested as S. Doubling time of cells in the suspension group was similar to that in the control group. ④ Amount of bone marrow stromal cells in femur: Amount of bone marrow stromal cells in primary culture in the suspension group was decreased as 50% as that in the control group (P＜0.05).CONCLUSION: Under simulated weightlessness, amount of bone marrow stromal cells decreases obviously; in addition, amount of osteoblast also decreases in weight bearing bone of hindlimbs and osteogentic capacity in vitro decreases simultaneously.

BACKGROUND:Decreased function and reduced number of CD4+CD25+regulatory T cells have been considered the major manifestation of immunity dysfunction in children with primary nephrotic syndrome. Bone marrow mesenchymal stem cells have immunoregulation effects, which up-regulate CD4+CD25+regulatory T cells, inhibit proliferation of lymphocytes, and have been widely used in many immune diseases.
OBJECTIVE:To investigate the effects of bone marrow mesenchymal stem celltransplantation on the CD4+CD25+regulatory T cells of peripheral blood in rats with primary nephrotic syndrome.
METHODS:Bone marrow mesenchymal stem cells from six Sprague-Dawley rats were isolated, passaged and utilized for cellsuspension preparation. At the third passage, bone marrow mesenchymal stem cells were used for transplantation. The remaining 30 rats were randomly and equal y divided into three groups:normal group, normal saline infusion group, and bone marrow mesenchymal stem cells group. The rat models of primary nephrotic syndrome were established by single injection of adriamycin intravenously through tail vein in the latter two groups. Rats were then treated with bone marrow mesenchymal stem cells (1×10 7 ) (bone marrow mesenchymal stem cells group) or normal saline (normal saline infusion group) through tail vein at the same time after adriamycin administration. The normal group received no treatment.
RESULTS AND CONCLUSION:Compared with the normal group, rats in the normal saline infusion group developed nephropathy characterized by ascites, proteinuria, hypoalbuminemia, hypercholastero-lnemia, and progressive renal injury. However, the proteinurine and clinical severity in bone marrow mesenchymal stem cells group were significantly ameliorated after treatment with bone marrow mesenchymal stem cells. CD4+CD25+Treg/CD4+Treg in the peripheral blood in the bone marrow mesenchymal stem cells group and normal saline infusion group were significantly higher than that in the normal group at 28 days after model establishment (P<0.05), while there was no significant difference between bone marrow mesenchymal stem cells group and normal saline infusion group (P>0.05). The expression of FoxP3 mRNA in the peripheral blood mononuclear cells of the bone marrow mesenchymal stem cells group was significantly higher than that in the normal saline infusion group and normal group (P<0.05). The bone marrow mesenchymal stem cells play a protective effect in rats with primary nephrotic syndrome, which may be related to the increase of local expression of FoxP3 and generation of CD4+CD25+Treg.

ObjectiveTo investigate the correlation between interferon regulatory factor 5 (IRF5) ,vitamin D receptor (VDR ) ,beta-defensin 1 (DEFB1 ) ,Toll-like receptor 4 (TLR4 ) gene polymorphismand Crohn′s disease (CD) in Chinese Han population .MethodsFrom January 2007 to May 2011 ,thedata and serum samples of 158 CD patients and 246 healthy controls were collected .The genotype of 14tag single-nucleotide polymorphisms (SNP) of IRF5 ,VDR ,DEFB1 and TLR4 were detected .Chi-squaretest was performed for rate comparison between CD group and healthy control group . Multifactordimensionality reduction (MDR) was used to analyze the combined effects of above candidate genes and therelation with susceptibility of CD .ResultsAccording to allele or genotype correlation analysis ,there wasno correlation between IRF5 ,VDR ,DEFB1 ,TLR4 and susceptibility of CD (all P> 0 .05) .The resultsof haplotype correlation analysis indicated that the frequency of GTACC haplotype in IRF5 of CD groupand healthy control group was 0 .046 and 0 .089 ,respectively ,the difference was statistically significant (χ2 = 5 .223 ,P= 0 .022 3) .The results of genotype and clinical type analysis indicated that the genotypesof rs2978880 of DEFB1 in CD patients were C/C ,C/T ,T/T ,the frequency of patients with surgery was0 .235 ,0 .603 and 0 .162 ,respectively ,and the frequency of patients without surgery was 0 .482 ,0 .388and 0 .129 ,respectively .The risk of intestinal surgery in patients with C /C genotype was lower (χ2 =10 .065 ,P= 0 .006 ) .The results of MDR analysis indicated that no interactions were detected betweenabove genes and susceptibility of CD (all P > 0 .05) .ConclusionsThe GTACC haplotype in IRF5 wascorrelated with the susceptibility of CD ,and the C/C genotype of rs2978880 of DEFB1 was correlatedwith CD clinical phenotype in Chinese Han population .

Objective To assess the left ventricular systolic function (LVSF) in patients with implanted dual-chamber(DDD) mode cardiac pacemakers using Two-dimensional Echocardiography (2DE),Real-time Tri-plane Echocardiography (RT-3PE)and Full-volume Three Dimensional Echocardiography (FV-3DE).Methods A total of 30 patients with DDD mode cardiac pacemaker were ex-amined by 2DE, RT-3PE and FV-3DE separately.Left ventricle end diastolic volume (LVEDV), left ventricle end systolic volume (LVESV), and ejection fraction (EF) were measured and compared within the three methods above .Results The measurement of EF with patients of post-operation was higher than the patients of pre-operation.The measurements of EF with 2DE were higher than RT-3PE.The measurements of LVEDV , LVESV and SV with 2DE and RT-3PE were lower than FV-3DE, and EF was higher .There were statistically significant differences in above measurements ( P <0.05 ) .But there were no statistically significant differences in measurements of LVEDV and LVESV between 2DE and RT-3DE ( P >0.05).Conclusions Implanting DDD mode cardiac pace-maker can evaluate LVSF of patients obviously .FV-3DE can evaluate LVSF in patients with DDD mode cardiac pacemaker accurately . The LVEDV, LVESV and SV are underestimated by 2DE and RT-3PE, and EF is overestimated by 2DE and RT-3PE.

Objective To investigates the diagnostic value of combined detection serum CCL18, CXCL1 antigen, C1D, TM4SF1, FXR1, TIZ IgG autoantibody by suspension array for ovarian cancer. Methods Suspension array was used to detect CCL18, CXCL1 antigen, C1D, TM4SF1, FXR1, TIZ IgG autoantibody in 120 cases of healthy women, 204 cases of patients with benign pelvic tumors, 119 cases of pelvic malignant tumor patients, and 40 cases with breast cancer, lung cancer oroliver cancer, respectively. Constructed diagnosis model of combined detection six biomarkers for diagnosis of ovarian malignant tumor. Constructed diagnosis model of combined detection autoantibodies to diagnose epithelial ovarian cancer. Analysed the value of detecting six biomarkers for diagnosis of ovarian malignant tumor and detecting autoantibodies for diagnosis of epithelial ovarian cancer. Analysed diagnostic value of detecting six biomarkers to diagnose stageⅠandⅡepithelial ovarian cancer. Compared diagnostic value of detecting six biomarkers in diagnosis of tissue types and pathologic grading with that of CA125. Results Model of combined detecting six biomarkers to diagnose ovarian malignant tumor was logit(P)=-11.151+0.008×C1D+0.011 × TM4SF1+0.011 × TIZ-0.008 × FXR1+0.021 × CCL18+0.200 × CXCL1. Model of combined detection autoantibodies to diagnose epithelial ovarian cancer was logit(P)=-5.137+0.013 × C1D+0.014 × TM4SF1+0.060 × TIZ-0.060 × FXR1. Sensitivity and specificity of detecting six biomarker to diagnose ovarian malignant tumor was 90.6% and 98.7%. Sensitivity and specificity of detecting autoantibodies to diagnose epithelial ovarian cancer was 75.8%and 96.7%. Combined detection for six biomarkers to diagnose serous and mucinous ovarian cancer was statistically no better than those of CA125 (P=0.196 and P=0.602, respectively);there was significantly difference in diagnosis of ovarian cancer (P=0.023), and there was no significantly difference in diagnosis of different pathological grading (P=0.089 and P=0.169, respectively). Conclusions Constructing diagnosis model of combined detection six biomarker to diagnose ovarian malignant tumor and constructed diagnosis model of combined detectionautoantibodies to diagnose epithelial ovarian cancer. Combined detection six biomarkers to diagnose serous and mucinous ovarian tumors is better than that of CA125.