Objective To analyze the hepatitis B virus infected patients'B-ultrasound hepatobiliary imaging and provide a refer-ence for infection prevention and diagnosis of hepatobiliary disease in the region of Shijiazhuang.Methods In three hospitals of Shi-jiazhuang,500 cases of hepatitis B virus infected patients were enrolled in the study.All patients had intact liver function test data and hepatobiliary B-ultrasound information,and their liver function test results and hepatobiliary B-ultrasound imaging test results were analyzed.Results Among 500 cases of patients with hepatitis B virus infection,22.4% patients were with alanine aminotrans-ferase (ALT)increasing,diagnosed by using B-mold ultrasonography 5.4% patients with a liver cyst,2.2% with liver abscess,8. 4% with fatty liver,1.4% with primary liver cancer percent,1.2% with secondary liver cancer,1.0% with cirrhosis.Conclusion The liver function test of patients suffering from fatty liver,cirrhosis,liver abscess shows higher proportion of ALT increasing, which suggests that in patients with hepatitis B virus infection whose liver function tests display ALT elevations should underwent B ultrasonic examination and doctors should focuse on if the patient with cirrhosis,fatty liver or liver abscess.

Objective To investigate the expression of brain-type glycogen phosphorylase(GPBB)as a new biomarker in colorec-tal carcinomas,to understand its expression timing in colorectal neoplasia and its relation with the clinical pathological parameters, and to compare it with the P53 gene.Methods 40 specimens of colorectal carcinoma and 18 specimens of colorecpal neoplasia were selected.The expression of GPBB and P53 in colorectal tumor was investigated by self-made specific anti-human GPBB antibody and P53 antibody.Results The positive expression rate of GPBB in colorectal carcinoma was 80%,which was significantly higher than that in colorectal carcinoma,moreover its expression in moderate and severe atypical hyperplasia adenoma and papillary adenoma was earlier than P53 gene expression.Conclusion GPBB is a enzyme expressed in carcinoma and precancerous lesion,therefore it may be taken as early biomarker enzyme for predicting the occurrence of colorectal carcinoma.

Objective To explore causes and solutions of false estimates of elevated serum creatinine in patients with Walden‐strom′s macroglobulinemia throug wet chemical enzymatic method .Methods 5 cases of patients hospitalized in the Bethune Inter‐national Peace Hospital were enrolled as subjects from 2010 to 2012 .The large molecular proteins were removal from serum sam‐ples collected from patients with Waldenstrom′s macroglobulinemia by using centrifugal ultrafiltration tube .The serum creatinine levels were detected through using the wet chemical enzymatic method ,wet chemical picric acid method and dry chemical enzymatic method before and after ultrafiltration ,and data were compared .Results Before ultrafiltration ,the levels of serum creatinine of 2 cases of patients with Waldenstrom′s macroglobulinemia detected by using wet chemical enzymatic method differed with those de‐tected by using wet chemical picric acid method and dry chemical enzymatic method .While there were no obvious differences be‐tween levels of serum creatinine detected by wet chemical picric acid method and dry chemical enzymatic method .While ,after ultra‐filtration ,no obvious differences were founded in levels of serum creatinine detected by the thress methods .Conclusion The large molecular proteins should be eliminated when using the wet chemical enzymatic method in the detection of serum creatinine levels , in order to avoid abnormal increase .And the wet chemical picric acid method and dry chemical enzymatic method could also be uti‐lized to determine the accuracy ,and provide reliable determination results .

Objective To explore the role of insulin-like growth factor-2/insulin-like growth factor1 receptor/insulin receptor substrate-1 (IGF2/IGF1R/IRS1) signal pathway inducing the chemoresistance of epidermal growth factor receptor 2 (ErbB2) positive breast cancer cells to Herceptin.Methods Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot assay were used to determine the expression levels of IGF2,IGF1 R,and IRS1.The direct targets of miR-126 were validated by dual-luciferase reporter gene assay.In SKBR3/pool2 cells,IGF1 R activity was reduced by an inhibitor of IGF1 R,and IRS1 was knocked-down by shRNAs.Furthermore,3-(4,5-dimenthylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay was performed to evaluate the sensitivity of these treated cells to Herceptin.Results IGF2,IGF1 R,and IRS1 were significantly higher expressed in SKBR3/pool2 cell compared to that in SKBR3 cell.Western blot assay showed that IGF2/IGF1R/IRS1 was activated in SKBR3/pool2 cells.Bioinformatics analysis combined with luciferase activity suggested that miR-126 directly targeted IRS1.MTS results demonstrated that the chemosensitivity to Herceptin of SKBR3/ pool2 cells with inhibitor of IGF1R or shRNAs targeting IRS1 or overexpressing miR-126 was significantly reduced.Conclusions IGF2/IGF1R/IRS1 signal pathway confers to the chemoresistance of ErbB2 positive breast cancer cells to Herceptin.

Objective To explore how to improve the immunogenicity of short epitope peptides of triggering melanoma MART 1 specific CD8 +T cell responses Methods Therapeutic peptides based on the immunodominant MART 127 35, HIV Tat49 57CCP sequence and a tetanus toxoid universal Th epitope were designed and synthesized The immunological functions were studied in PBMCs from HLA A2 + melanoma patients Results The results demonstrated that the peptides could trigger vigorous MART 1 specific CD8 + CTL activities in vitro The function of peptide containing MART 127 35 and tetanus universal Th epitope was more vigorous than that of MART 127 35 peptide, and the immunogenicty of the peptides with HIV Tat49 57CCP sequence, MART 127 35 and tetanus universal Th epitope was the most vigorous Conclusion Linkage of HIV Tat49 57CCP sequence and a tetanus universal Th epitope could dramatically improve the immunogenictiy of the MART 127 35 epitope peptide

Objective To explore how to trigger an HLA Ⅰ restricted CD8 + T cell response to exogenously synthesized peptides in vitro . Methods A new panel of therapeutic peptides based on the immunodominant B and CTL epitopes of HBV PreS 2 region and HBcAg and the tetanus toxoid common T helper epitopes were synthesized by Merrifield solid phase peptide synthesis, and HLA A2 + human PBMCs were used to investigate the immunological properties of the mimetic peptides. Results The results demonstrated that the peptides could trigger vigorous CD8 + HBV specific CTL responses in vitro specifically and effectively. Conclusion The results reveal that T helper plus B epitopes designing with the introduction of short and flexible linker can remarkably improve the immunogenicity of short peptides and hence produce effective CTL responses in vitro .

] Objective To explore the role and mechanisms of FGF2 in chemo?resistance in breast cancer. Methods The inhibitors for different signal pathway were used to treat two drug?resistant breast cancer cell lines MCF?7/5?Fu and T47D/5?Fu established in our lab. MTS assay was used to determine chemo?sensitivity and Hoechst stain was used to measure apoptosis. Protein activation and FGF2 protein level in cell culture medium were detected by western blot and ELISA respectively. Results Akt inhibitor MK?2206 (20 nM) and mTOR inhibitor AZD8055 (2 nM) significantly reversed the chemo?resistance of MCF?7/5?Fu and T47D/5?Fu cell lines to 5?Fu and paclitaxel, but ERK1/2 inhibitor SCH772984 showed no significant effect. Compared to parent cell lines MCF?7 and T47D, p?Akt and p?S6K (represented as mTORactivity) levels were obviously up?regulated in MCF?7/5?Fu and T47D/5?Fu cell lines, and so do the FGF2 mRNA level and FGF2 protein level from culture medium. Moreover, FGFR inhibitor AZD4547 (4 nM) markedly reversed the chemo?resistance of MCF?7/5?Fu and T47D/5?Fu cell lines to 5?Fu and paclitaxel and down?regulated activation of FGFR?Akt?mTOR signal pathway. In agreement, FGF2 protein (10ng/ml) enhanced the chemo?resistance of MCF?7 and T47D cell lines to 5?Fu and paclitaxel and up?regulated activation of FGFR?Akt?mTOR signal pathway. Conclusion Activation of FGF2?FGFR?Akt?mTOR signal pathway promoted chemo?resistance of breast cancer cells.

In recent years,the state has a substantial increase in investment in Medical Research.The number of hospital-borne scientific research,funding amounts and types of projects is also increasing..Our hospital scientific management based oriented clinical needs,Construction Institute hospital as a work positioning,the whole process of quality management as the implementation of safeguards.Through a series of positive measures,gradually formed which are consistent with the management of the hospital research and development,and scientific research achievements into clinical practice.The research management changed from passive management model to proactively manage; from the emergency management to the whole process of managing; from the targeted management to guide the management of clinical needs.These measures effectively improve the level of scientific research in hospitals.

Objective To observe the immunologic effect of transplantation of MSCs by studying the early and later period of collagen induced arthritis. Methods Rats MSCs were isolated and expanded from bone marrow cells by density gradient centrifugation and adhering to the culture plastic bottle, and the phenotypes were assessed by flow cytometry. We established collagen induced arthritis rats model. MSCs wereinjected from tail veins. We observed the expression of Foxp3 mRNA using RT-PCR, and the level of CD4+CD25+ T cell was tested by flow cytometry. One-way ANOVA and LSD-t test were used for statistical analysis.Results The percentage of CD4+ CD25+ T cells in early and later CIA groups was lower than that of normal control group and treatment groups, which showed statistically significant difference (P＜0.05). The level of CD4+ CD25+ T cell in early MSCs treatment group was higher than the later MSNs treatment group, which showed statistically significant difference (P＜0.05). Compared to the normal group and treatment groups, the expression level of Foxp3 mRNA in the early and later CIA groups was decreased markedly, while the early MSNs treatment group versus the later treatment group showed no statistically significant difference (P＞0.05).The intensity of Foxp3 mRNA in the treatment groups was similar to normal control group. Conclusion In this study, MSCs has shown significant immune-modulatory effects. It up-regulates the level of CD4+ CD25+ T cell in CIA rats, accelerate the expression of Foxp3 mRNA. The early treatment group is more effective than the late treatment group.

Objective:To study the effect of metformin on proliferation,cell cycle and apoptosis of U937 cells.Methods: U937 cells were treated with different concentrations of metformin,collected cells in 24,48 and 72 hours.Subsequently,cell proliferation was assessed by CCK-8 assay,and the cell cycle and apoptosis were analyzed by flow cytometry (FCM).The expression of Bcl-2,Bax,p-AMPK,p53 were determined by Western blot.Results: The proliferation of U937 cells was inhibited by metformin in a time-and dose-dependent manner.Metformin-treated cells were arrested at G0/G1 phase,the cell frequency at G0/G1 phase was increased in a time-and dose-dependent manner.Metformin also induced cell apoptosis in a dose-dependent manner.It showed that 20 mmol/L metformin induced cell apoptosis in a time-dependent manner.The expression of p-AMPK,p53,Bax was up-regulated while Bcl-2 expression was down-regulated after metformin treatment.Conclusion: Metformin could inhibit the U937 cell proliferation,block the cell cycle at G0/G1 phase,and induce cell apoptosis,which may partially be attribute to the up-regulation of Bax,down-regulation of Bcl-2,activation of AMPK/p53 signaling.