Objective To explore the clinical efficacy and side effect of hepatocyte growth - promoting factor in treatment of infant hepatitis syndrome. Methods Sixty one cases of infant hepatitis syndrome were chased as the treatment group who hospitalized in our hospital from March 2002 to Feb 2003,and 54 cases of infant hepatitis syndrome as control group who hospitalized during March 2001 to Feb 2002. The treatment group were administrated with hepatocyte growth - promoting factor for 2 weeks. We obser-ved the recovery of patient's liver function (TBIL.ALT, AST) and the side effect of hepatocyte growth- promoting factor after two weeks of the treatment. Results After the treatment,TBIL and ALT decreased significantly in the treatment group of infant hepatitis syndrome. The treatment group was superior to the control group (P

Background and purpose:Breast masses is woman's common diease,With the development of people's living.They are eager to find a new method which is efficient and less pain to replace conventional open surgery.So Mammotone appears.We assessed the efficacy of Mammotome biopsy system for the patients with single and multiple breast masses.We assessed the efficacy of Mammotome biopsy system for patients with single and multiple breast masses.Methods:From Janurary 2004 to April 2005,patients with single and multiple breast masses underwent Mammotome and conventional surgery respectively.Two methods has been compared from the aspects of difficulties,side effects,prognosis and degree of patient's satisfaction.Results:The length of excisions,anesthetic dosage,operational time,pain etc with Mammtome group were superior to the conventional group,especially for the patients with multiple breast masses.There were no difference in terms of bleeding during or after operation for two groups.Patients were followed up 3 to 15 months,none of the patients had relapse and patient's satisfaction was very encouraging.Conclusions:The color guided Mammotome showed very promising results for the patients with breast benign masses,and it was very useful for the masses either located deeply or were multiple.

To investigate the relationship between Snail and renal tubular epithelial-mesenchymal transition (EMT) or tubulointerstitial fibrosis (TIF) at tissue and cellular levels and to observe the changes of miRNA profile after transfecting Snail gene into human renal tubular epithelial cells (HK-2),to further elucidate the importance of miRNA in the pathogenesis of renal fibrosis.Methods The expression of Snail and EMT-related proteins vimentin,SMA,E-cadherin was detected by immunohistochemistry in renal tissues of 40 patients with IgA nephropathy.The expression of Snail,E-cadherin and SMA in normal control group,empty transfection group and Snail gene transfection group was detected by Western blot and RT-PCR.Furthermore,differentially expressed miRNAs were screened by gene chip.Results By immunohistochemistry,Snail expression was positively correlated with vimentin and SMA,negatively correlated with E-cadherin in IgA nephropathy.The higher degree of the TIF,the stronger the expression of Snail.Compared with the control group,the expression of Snail,vimentin and SMA in the snail transfected group increased.However,E-cadherin decreased at gene and protein level by the RT-PCR and Western blot (P ＜ 0.05).The difference was statistically significant.Five distinctly different miRNAs were screened by gene chip after Snail gene was transfected into HK-2 cells,and then 5 026 potential target genes were predicted.Conclusion Snail expression is closely related with renal tubular epithelial mesenchymal transition and tubulointerstitial fibrosis,and it may be used as a new target in EMT prevention.Differentially expressed miRNAs may be involved in the development of EMT and TIF.

For screening the potential drugs as anti-liver fibrosis candidates, we established a high- throughput drug screening cell model based on COL1A1 promoter. The activity of COL1A1 promoter and luciferase reporter gene can be elevated by TGF-β1, and inhibited by candidate drugs. We constructed a recombined plasmid with COL1A1 promoter and luciferase reporter gene pGL4.17, the activity of COL1A1 promoter was reflected by fluorescence intensity. COL1A1 promoter activity was detected by Dual-Luciferase Reporter Assay System, it came that the relative luciferase activity of COL1A1 promoter was 15.98 times higher than that of control group induced by TGF-β1, showing the recombined plasmid could be used in cell model. The recombined plasmid was transfected into human hepatic stellate cells LX2, detected the effect of potential drugs, and obtained a stable expression system through stable transfection and monoclonal cell culture. A sample which could reduce COL1A1 promoter activity signally by our cell model, decreased collagen I mRNA and protein expression detected by real-time RT-PCR and Western blotting. It indicates this novel cell model can be used in high-throughput drug screening of potential anti-liver fibrosis drugs.
Collagen Type I ; genetics ; Drug Evaluation, Preclinical ; methods ; Genes, Reporter ; Hepatic Stellate Cells ; High-Throughput Screening Assays ; Humans ; Liver Cirrhosis ; drug therapy ; Luciferases ; Plasmids ; Promoter Regions, Genetic ; RNA, Messenger ; Transfection ; Transforming Growth Factor beta1 ; pharmacology

To study the pharmacokinetic effect of different combined administration with monarch drug Ziziphi Spinosae Semen on its main components in rats. Sprague-Dawley (SD) rats were randomly divided into Ziziphi Spinosae Semen group, Ziziphi Spinosae Semen-Fructus Schisandrae Chinensis group, Ziziphi spinosae Semen-Salviae Miltiorrhize Radix et Rhizoma group and Zaoren Ansheng prescription group. After oral administration, HPLC was eluted with the mobile phase of acetonitrle-0.03% phosphate acid water in a gradient mode. The detection wavelength was 280 nm. The pharmacokinetic parameters of spinosin and ferulic acid were calculated by DAS 2. 0 software. Compared with Ziziphi Spinosae Semen group, Ziziphi Spinosae Semen-Fructus Schisandrae Chinensis group, Ziziphi Spinosae Semen-Salviae miltiorrhizae Radix et Rhizoma group showed a lower maximum plasma concentration (C(max)) and area under curve (AUC(0-t)) for spinosin and ferulic acid but higher clearance speed (CL/F); whereas the Zaoren Ansheng prescription group showed higher maximum plasma concentration (C(max)) and area under curve (AUC(0-t)) for spinosin and ferulic acid but lower clearance speed (CL/F). Compared with Ziziphi Spinosae Semen group, prescription group showed slower metabolism of spinosin and ferulic
Animals ; Chromatography, High Pressure Liquid ; Coumaric Acids ; administration & dosage ; blood ; pharmacokinetics ; Drug Interactions ; Drugs, Chinese Herbal ; administration & dosage ; analysis ; pharmacokinetics ; Female ; Flavonoids ; administration & dosage ; blood ; pharmacokinetics ; Humans ; Male ; Rats ; Rats, Sprague-Dawley ; Ziziphus ; chemistry

AIM:To investigate the effects of silymarin on lipopolysaccharide(LPS)-induced acute lung injury in rats and its possible molecular mechanisms.METHODS: Fifty-eight male SD rats,weighting 230-250 g,were divided into four groups randomly: normal control(n=12);acute lung injury group(n=15),receiving intravenous LPS(O55∶B5,5 mg/kg);silymarin alone group(50 mg/kg,n=15);intervention group(n=16,receiving silymarin 50 mg/kg and LPS 5 mg/kg).The specimens were collected 6 hours later.The following changes,including blood gas analysis,the lung wet/dry weight ratio,the pulmonary vascular permeability,histological manifestations,lung tissue myeloperoxidase activity,the levels of TNF-?,IL-1?,MCP-1 and SOD,GSH-Px as well as malonaldehyde and conjugated diene in plasma and lung tissue,were observed.RESULTS: Compared with control group,the lungs of the rats in LPS treatment group showed significant hyperemia and spotted hemorrhage.The inflammatory granulocyte infiltrating,diffused alveolar septum thickening and spotted hemorrhage were observed in pathological examinations.The lung wet/dry weight ratio and Evans blue content(per gram) increased significantly after LPS treatment.The myeloperoxidase activity in plasma and lung tissue,the levels of TNF-?,IL-1?,MCP-1 and SOD,GSH-Px as well as malonaldehyde and conjugated diene were increased significantly in LPS treatment group.However,in intervention groups,all the above-mentioned measurements were reversed significantly by silymarin treatment compared with LPS treatment group.CONCLUSION: Silymarin may decrease inflammatory reaction and oxidative stress,and further decrease lung damage induced by LPS in rats,all indicating protection of silymarin against acute lung injury.

Objective: To investigate the effects of grasp seed procyanidins(GSP,原青花素) on lipopolysaccharide(LPS)induced acute lung injury(ALI) in rats with renal function damage and the related possible molecular mechanisms.Methods: The homogenates of lung and kidney were prepared and venous blood were collected at 6 hours after injection of LPS and medicine.The changes of contents of creatinine(Cr),blood urea nitrogen(BUN),lactic acid(Lac) and nitric oxide(NO) in the blood were measured.The enzyme linked immunosorbent assay(ELISA) was used to measure the levels of tumor necrosis factor?(TNF-?),interleukin-1?(IL-1?),monocyte chemoattractant protein-1(MCP-1) and IL-6 in the serum,lung and renal cortex tissue homogenate in various groups.The histopathological changes of lung tissues were observed.The pulmonary vascular permeability and the lung wet/dry(W/D) weight ratio were determined;the malonaldehyde(MDA) content,Na+K+-ATPase,superoxide dismutase(SOD),myeloperoxidase(MPO) and glutathion peroxidase(GSH-Px) activities in lung and renal tissues were also determined.Changes of mitogen activated protein kinase(MAPKs) were detected by Western blotting,and the combination activity of nuclear factor-?B(NF-?B) to DNA was detected by electrophoretic mobility shift assay (EMSA) in lung tissues.Results: ①Compared with the normal rats in control group,the lungs of the rats in LPS treatment group and GSP group had significant hyperemia and spotted hemorrhage.The inflammatory granulocyte infiltration,diffuse alveolar septum thickening and spotted hemorrhage were observed in the pathological examinations,while in LPS plus GSP group the above mentioned pathological changes were milder.②Compared with control group,the lung W/D and pulmonary vascular permeability were much higher in the LPS treatment groups(P

Objective To develop a multiplex PCR-based reverse line blot(mPCR/RLB) hybridization assay to detect,simultaneously,seven genes encoding AR-erm(A/TR),erm(B),mef(A/ E),tet(M),tet(O),aphA-3,aad-6 and two AR-related genes,int-Tn and mreA in group B streptococcus.Methods Nine pairs of specific primers and Oligonucleotide probes targeting erm(A/TR), erm(B),mef(A/E),tet(M),tet(O),aphA-3,aad-6 int-Tn and mreA respectively were modified according to former studies or designed in this study.The primers and probes were labeled with biotin and amino,respectively.The nine genes were amplified simultaneously in the same tube.PCR product hybridized with the probes labeled in the BiodyneC nylon membrane to detect the nine genes.To detect the sensitivity and specificity of the method developed,PCR with single pair of primer targeting each gene were tested in 318 isolates tested and the results were compared with the one abtained by RLB.Results The nine resistance-related genes could be successfully detected by mPCR/RLB assay developed in this study.Based on sequencing,21 of 22 isolates with mef had mef(E)and eight of 353 with int-Tn had an atypical sequence.Except for the above 29 genes,all the others corresponded well with the results obtained by single pair primer PCR.Conclusion The mPCR/RLB assay developed in this study is simple,rapid and suitable for surveillance of antibiotic resistance in GBS.

The paper is aimed to study the enzymatic hydrolysis of the activatable cell-penetrating peptide (ACPP) that was designed and synthesized. The ACPP was composed of three parts, polyanionic sequence peptide, peptide sequence that specifically cleaved by matrix metalloproteinase (MMP) and cell penetrating peptide (CPP). The ACPP was hydrolyzed by type IV collagenase (MMP-2/9) under the condition of 37 degrees C and was monitored by reversed-phase high performance liquid chromatography (RP-HPLC). The efflux of peak was collected and detected by matrix assisted laser desorption ionization orthogonal time of flight mass spectrometry (MALDIO-TOF-MS) to speculate the sequences of the peptide fragments. The results indicated that the ACPP could be cleaved by type IV collagenase at target site as predicted, released CPP. The half life of the cleavage was about 4 h. Meanwhile, the peptide fragments may be cleaved again at other sites by type IV collagenase.
Amino Acid Sequence ; Cell-Penetrating Peptides ; chemical synthesis ; chemistry ; Chromatography, High Pressure Liquid ; Hydrolysis ; Matrix Metalloproteinase 2 ; chemistry ; Matrix Metalloproteinase 9 ; chemistry ; Peptide Fragments ; chemistry ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization

Objective To investigate the relations between microRNA-451 (miR-451) expression and gastric cancer (GC).Methods Expression of miR-451 in tumor and paired non-cancerous tissues was measured by real-time quantitative polymerase chain reaction.The association of miR-451 expression with clinical pathological characteristics and prognosis was statistically analyzed;in addition,slow virus LV-mir-451 was applied to infect human gastric cancer cell line BGC-823 and MKN-45,and construct miR-451 over-expressed stable cell lines.Finally,to detect cell proliferation,migration and invasion.Results miR-451 expression decreased in GC tissues vs.pericarcinous tissues (0.010 ± 0.007 vs.0.014 ± 0.008,t =3.015,P ＜ 0.05),and its down-regulation positively correlated with lymphatic metastasis,clinical staging and shorter overall survival.miR-451 expression in BGC-823 and MKN-45 cells did not impact on cell proliferation,but did reduce migration rates (0.863 ±0.026 vs.1.107 ±0.032,t =9.820,P＜0.05;0.863 ±0.026 vs.1.060±0.054,t =4.369,P＜0.05) and invasion rates (1.040 ± 0.055 vs.1.522 ± 0.001,t =5.84,P ＜ 0.05;1.040 ± 0.055 vs.1.696 ± 0.078,t =10.16,P ＜ 0.05) in BGC-823 cells.Conclusions miR-451 may act as a prognostic marker in GC.