Objective To study the effect of the ECV-304 cells modified with LIF gene on the ex vivo culture of HSC/HPC in cord blood.Methods The ECV-304 cells were infected by Eukaryotic Expression plasmid pcDNA3.0LIF,and the positive ECV-304 cells were obtained by selected with G418.These cells were used to co-culture with CD34+ cells of cord blood.The phenotype of CD34+ and CD34+ CD54+、CD34+ CD62L+ primitive progenitors was detected by flow cytometry.Results The LIF gene can express in ECV-304 cells steadily.ECV-304 cells modified with LIF gene can improve expansion of CB CD34+、CD34+CD54+ and CD34+ CD62L+ cells while sustaining the expression of homing-related adhesion molecule.Conclusion The ECV-304 cells modified with LIF gene can not only significantly expand CB hematopoietic progenitor cells ex vivo,but the expanded CD34+ cells may well retain their homing ability.

Purpose To investigate the expression of the protein of Ezrin and AQP5 in the normal, dysplasia gastric and carcinoma of esophagogastirc junction tissues and to find out their relationship with the biologic behavior of the carcinoma of esophagogastirc junction in the southern area of Hebei Province. Methods Ezrin and AQP5 proteins were detected by immunohistochemical staining in 10 ca-ses of normal gastric tissue, 40 cases dysplasia and 165 cases of the carcinoma of esophagogastirc junction tissues, respectively. Re-sults All of the expression levels of Ezrin and AQP5 protein were increasing according to the order of normal-dysplsia-carcinoma. The expression rate of Ezrin was 10%, 45% and 72. 7%, while the rate of AQP5 with 20%, 32. 5% and 65. 5% in the normal, dysplasia and carcinoma subgroup. The expression rates of each protein were significantly different among the three groups (P<0. 05). The ex-pression of them in the subgroup of poorly-differentiated with serosa invasion and lymph nodes metastasis was significantly higher than the other subgroup of well-differentiated with non serosa invasion or lymph nodes metastasis (P<0. 05). There was a positive correla-tion between the expression of Ezrin and AQP5 proteins in the carcinoma of esophagogastirc junction (P<0. 05). Conclusions Over-expression of Ezrin and AQP5 is detected in the carcinoma of esophagogastirc junction, with positive relationships, which probably helps the invasiveness and metastasis in the carcinoma of esophagogastirc junction synergistically.

Genetic Predisposition to Disease ; Genome-Wide Association Study ; Humans

BACKGROUND: The repair of periodontal tissue is dependent on the number and proliferation and differentiation abilities of periodontal ligament (PDL) cells. PDL cells have the potentiality of multi-directional differentiation such as cementoblast,osteoblast and fibroblast to fonn cement, alveolar bone and periodontal ligament and finally achieve periodontal tissue regeneration.OBJECTIVE:To observe the effects of Shuanghuangbu extract on the proliferation and differentiation of PDL cells.DESIGN:Observation trail.SETTING:Central Laboratory of Wuxi Third People's Hospital. MATERIALS: Periodontal tissue was provided voluntarily by the healthy young patients with deformity correction, and golden thread,skullcap,and rhizoma drynariae by the National Institute for the Control of Pharmaceutical and Biological Products.METHODS: The experiment was conducted in the Central Laboratory of Wuxi Third People's Hospital from July to October 2003.The crushed golden thread.skullcap,and rhizoma drynariae were mixed with distilled water at ratio of 1:10 (m:V),and refluxed in boiling water for 5 hours.The extract was collected,and after colation,the residue was refluxed in boiling water for another 3 hours. Both extract was blended, rotary evaporated and condensed, finally the liquid extract of 3 kg/L was obtained.There were 8 groups in the study including golden thread group, skullcap group,rhizoma drynariae group,golden thread plus skullcap group,golden thread plus rhizoma drynariae group, skullcap plus rhizoma drynariae group, Shuanghuangbu group and control group. PDL cells were cultured/n vitro assisted with Shuanghuangbu.The proliferation of cells was detected with MTT method and the ratio of collagen content in total protein was evaluated with hydroxyproline (HP).MAIN OUTCOME MEASURES:A value of proliferated PDL cells and the proportion of collagen protein in total protein.RESULTS:①Proliferation of PDL cells:Except golden thread group,all Chinese medicine promoted the proliferation of PDL cells significantly compared with control group (P＜0.05). The A value of Shuanghuangbu group was significantly increased.A value was increased with time and reached the peak on day 5.There were significant differences among each group at different time (P＜0.05).②Ratio of collagen content in total protein:Except golden thread group,the percentage was significantly increased by other Chinese medicines compared with control group (P＜0.05), especially Shuanghuangbu. The percentage was increased with time and reached the peak on day 5. There were significant differences among each group at different time (P＜0.05). CONCLUSION:The findings suggest that as a traditional Chinese herb,Shuanghuangbu can significantly stimulate the proliferation and differentiation of PDL cells.and increase the proportion of collagen content in total protein.It may act as an ideal Chinese medicine helper factor for the regeneration of PDL cells.

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Objective To investigate the different impacts of the components of metabolic syndrome (MS) on cardiovascular disease (CVD) risk factors and Framingham risk value (FRV) in newly-diagnosed type 2 diabetes mellitus (T2DM) patients without coronary heart disease (CHD).Methods A total of 212 newly-diagnosed T2DM patients was divided into three groups based on the components of MS,including body mass index (BMI),triglyceride (TG),high density lipoproteins cholesterol (HDL-C),and mean arterial pressure (MAP) tertile,respectively.The general CVD risk factors [smoking,BMI,TG,HDL-C,total cholesterol (TC),low density lipoproteins cholesterol (LDL-C),HbA1 C,homeostasis model assessment of insulin resistance (HOMA-IR),and FRV] were compared among the groups.Logistic regression analysis was used to observe the different impact of MS components on CVD risk.Results With the increasing of BMI,TG and MAP tertiles,all the CVD risk factors and the ratio of FRV middle-risk group or high-risk group had the tendency of augmentation.With the increasing of HDL-C tertiles,all the CVD risk factors and the ratio of FRV middle-risk group or high-risk group was in downtrend.Binary logistic regression analysis indicted that BMI,systolic pressure,diastolic pressure,HbA1 c and TG were risk factors of FRV non-low-risk group (middle-risk and high-risk groups),HDL-C was the protective factor.The odds ratios (ORs) of BMI,systolic pressure,diastolic pressure,HbA1 c,TG and HDL-C were 2.794 (95％ CI:2.390-2.408),2.601 (95 ％ CI:1.974-3.701),1.476 (95 ％ CI:1.231-2.048),2.964 (95 ％ CI:1.925-3.282),1.464(95％ CI:0.934-2.294),and 0.732(95％ CI:0.023-0.962),respectively.Logistic stepwise regression analysis indicated that systolic pressure,BMI,HbA1 C,and HDL-C were entered into the regression equation,and the partial regression coefficient was 0.784,1.213,1.679,and-0.854,respectively (P ＜ 0.05 or P ＜ 0.01).Conclusions All the components of MS in newly-diagnosed T2DM were correlated with CVD risk factors.However,they should be weighed differently.

Objective To analyze the diagnosis and treatment of iliac pseudoaneurysms following renal transplantation.Method The data of two patients with pseudoaneurysm who underwent kidney transplantation were retrospective analysied.Result One case with pseudoaneurysm received transplant nephrectomy,and pathological examination diagnosed mucoraceae infection; the other patient received endovascular treatment and amphotericin B therapy,endly died of hemorrhagic shock.Conclusion The development of pseudoaneurysms at the kidney transplantation recipients with the same donor results in high rates of mucormycosis.They should take anti-fungus therapy and operation as early as possible.

Objective To evaluate the academic status of the researchers in pediatric department of Peking university first hospital, we conducted bibliometric analysis of research on the scientific publications. Methods The total number, first authors, and the citing and cited conditions of these papers published from 1999 to 2000 were analyzed by bibliometric methods. Results There were total 513 papers including 275 original articles published in 59 journals from 1999 to 2003.There were 238 papers written in Chinese, of which 188 papers (79 %) were from the core journals. In the 37 original articles written in English, 31 papers(83.8 %) were select-ed by science citation index(SCI).The average of impact factors (IF) of sourcing journals was 1.447(0.107 -7.717). The averages of IF per year ranged from 0. 768 to 2.206.The original articles selected by SCI were totally cited 38 times. Every article was cited 1.41 times in average.Of all 275 papers,each had an average of 9.8 citing reference, increasing from 8.1 in 1999 to 12.0 in 2003.About 80.7 % of those references were written in foreign languages.The Price's index of those papers was 43.2%.Conclusions The number of papers kept improving in the past 5 years, and had a significant improvement in 2003.The authors showes great talents to use English articles as their main information sources. But the utilization of the last published papers in this subject should be im-proved.

Objective The aim of this study was to investigate the diagnostic value of the intravoxel incoherent motion (IVIM) for discriminating nonmetastatic from metastatic mediastinal lymph nodes in lung cancer.Methods IVIM was performed preoperatively on 66 patients with lung cancer during October 2015 to June 2016 in Capital Medical University Affiliated Beijing Chaoyang Hospital.Preoperative examination including the chest MRI scan,chest CT,head MRI,bone scan-ning and the cardiopulmonary function.None of the patients was undergone any kind of treatment about the cancer before the examinations,the neoadjuvant chemotherapy or radiation therapy,immunotherapy and gene targeted therapy were included.Measured the short axis diameter and the IVIM parameters of the mediastinal lymph nodes,apparent diffusion coefficient(ADC),diffusion coefficient(D),pseudo-diffusion coefficient(D *),and perfusion fraction(f).All the patients underwent the lobectomy or wedge resection and lymph node dissection or systematic sampling.By comparing the IVIM parameters of the nonmetastatic and metastatic mediastinal lymph nodes according to the pathological examination,draw the ROC curves to find the best cutoff value for diagnosis.And 42 cases were used to comparing the value of the MRI and CT in differential diagnosis.Results MRI measured 184 groups mediastinal lymph nodes,including 164 groups without metastasis,20 groups with metastasis.The ADC,D,D *,f values and short axis diameter of the nonmetastatic lymph nodes(n =164) were(2.880 ± 0.785) × 10-3 mm2/s,(0.670 ± 0.179) × 10-3 mm2/s,(0.383 ± 0.123) × 10-3 mm2/s,0.422 ± 0.119,(6.546 ± 1.932) mm,respectively,and (1.897 ±0.657) × 10-3 mm2/s,(0.472 ±0.210) × 10-3 mm2/s,(0.354 ±0.130) × 10-3 mm2/s,0.412 ±0.090,(7.510 ± 2.773) mm respectively for the metastatic lymph nodes (n =20).The ADC and D value of the nonmetastatic lymph nodes were significantly higher than the metastatic lymph nodes(P ＜0.01).While the other paraneters(D *,f,and short axis diameter) between the two groups did not show significantly different.Optimal cutoff values(area under the curve,sensitivity,and specificity) for distinguishing metastatic from nonmetastatic lymph nodes were as follows:ADC =1.890 × 10-3 mm2/s (0.871,92.7％,80.0％);and D =0.648 × 10-3mm2/s(0.740,70.0％,84.1％).Conclusion IVIM is useful to distinguish metastatic from nonmetastatic lymph nodes in lung cancer.The ADC and the D values are significant higher in metastatic lymph nodes,which more sensitive than the other parameters(D *,f,and short axis diameter).As a result,IVIM can be used in the N-stage diagnosis of lung cancer.

Objective To explore the influence of TAC protocol (pirarubicin,cyclophosphamide and docetaxel) and AC-T protocol (pirarubicin,cyclophosphamide and sequential docetaxel) on T lymphocytes cell subsets (included CD3+ T cells,CD3+ CD4+ T cells,CD3+ CD8+ T cells,CD3+ CD4+/CD3 + CD8+),natural killer (NK) cells and part of the quality of life in the peripheral blood of patients.Methods A total of 66 patients with breast cancer included 31 cases for TAC protocol (6 cycles of chemotherapy) and 35 cases for AC-T protocol(8 cycles of chemotherapy).Collected respectively before and after the last chemotherapy of peripheral blood,used flow cytometry technique to detect the proportion of T cell subsets and NK cells in peripheral blood,and compared the change of the part of the quality of life before and after chemotherapy.Results After chemotherapy of total of 66 patients CD3+ T cells,CD3+ CD4+T cells and NK cells of peripheral blood ((68.58± 11.03) ％,(33.53 ± 8.84) ％,(18.27 ± 10.65) ％) significantly lower than before chemotherapy ((74.03±13.04)％,(38.42±9.79)％,(19.83± 10.19)％),the differences were statistically significant(t =4.296,3.387,4.092,P＜ 0.05).Grouping was TAC protocol with AC-T,T cell subsets and NK cells before chemotherapy differences had no statistical significance.But after chemotherapy,CD3+ T cells,CD3+ CD4+T cells,CD3+CD8+ T cells and Karnofky score((64.63±10.01)％,(31.19±7.41)％,(24.66±7.40)％,(68.63± 5.100)％) of peripheral blood on TAC protocol were more decreased than AC-T protocol((72.29± 10.78)％,(35.74± 9.60) ％,(30.15 ± 11.12) ％,(77.29 ± 4.58) ％),the differences were statistically significant (t =2.99,2.15,2.35,2.237,P＜0.05).CD3+ CD4+/CD3+ CD8+ and NK cells were also decreased,but without statistical significance.The body quality of 66 patients was slightly increased after chemotherapy,but without statistical significance.Conclusion The body's immune function and the part of quality of the breast cancer patient's life have declined by chemotherapy drugs in varying degrees.Compared TAC,AC-T protocol has less influence on the immunological function and the part of living quality of patients with breast cancer.