Objective:To investigate whether interfering survivin has the potential to sensitize stomach cancer cells to Epirubicin.Methods:By the method of liposome transfection,survivin antisense oligodeoxynucleotide was transfected into human stomach cancer SGC-7901 cell line.Treat cells with different concentrations of survivin ASODN and Epirubicin respectively to select the best combination trough assessing the growth of cells by MTT assay.Cells were randomly divided into control group,ASODN group,Epirubicin and combination group.Western blot analysis was used to check the survivin protein expression;inhibitive rate were detected by MTT assay;Flow cytometric analysis was used to detect the cycle status of SGC-7901 cells.The apoptosis was screened according to the result of Annexin V-FITC.Reverse transcription polymerase chain reaction(RT-PCR)were applied to detect the expression of bcl-2、SMac mRNA.Results:MTT assay showed the proliferation of SGC-7901 cells was retarded obviously contrasting to control group.The level of survivin protein expression in ASODN group are lower than control group according to Western blot analysis.Annexin V-FITC show that the apoptosis rate of ASODN group cells increases.The level of SMac mRNA expression in ASODN group are higher than control group according to RT-PCR analysis.Conclusion:Survivin siRNA can sensitize stomach cancer cells to Epirubicin.Up-regulating the SMac expression might be one of mechanisms.

Objective To prepare the glycyrrhizic acid solid lipid nanoparticles(GL-SLN).Methods GL-SLN was prepared by conventional rotary-evaporated film-ultrasonication method.Based on the single-factor experiment,GL-SLN was prepared using orthogonal design for optimization of formulation and technology.The obtained GL-SLN was also evaluated.Results GL-SLN had even and regular appearance and the average diameter was 75.8 nm.Zeta potential was-19.7 mV.The drug loading was 8.27% and the entrapment ratio was 91.76%.Conclusion The entrapment ratio of GL-SLN and the stability of GL-SLN prepared by conventional rotary-evaporated film-ultrasonication method are high and good.

Objective:To investigate the effects of human factor Ⅸ (FⅨ) intron 1 inserted in forward orientation into retroviral vector on the expression of FⅨ in muscle cells. Methods: Two FⅨ mini-genes, FⅨm1 and FⅨm2, were inserted in forward orientation into retroviral vector backbone, LⅨSN, constructing 2 vectors named LⅨm1SN and LⅨm2SN, containing shortened intron of 1.4 and 0.3 kb, respectively. Retrovirus was made by transfecting PA317 packaging cells. Transient and stable expression of FⅨ was tested in SCID mouse muscle cells (SCID-MB). Results: The vector titers and expression levels of LⅨm1SN and LⅨm2SN in SCID-MB were 1 to 2 folds higher than that of LⅨSN. Some SCID-MB colonies transfected with LⅨm2SN contained intact FⅨm2 inton elements, suggesting that splicing of virus mRNA may not be complete in packaging cells. Conclusion: FⅨ intron 1 inserted in forward orientation in retroviral vectors can increase retroviral titer and the expression level of FⅨ in muscle cells.

Adult ; Humans ; Purpura, Thrombocytopenic, Idiopathic ; diagnosis ; therapy

In autoimmune thrombocytopenic purpura (AITP) specific autoantibodies bind platelet GP via their Fab fragments. Both splenic CD5+ B and CD5- B cells produce platelet glycoprotein-specific antibodies. There is limited number of antigenic determinants, and the GP-specific autoantibodies are derived from a restricted number of B-cell clones in chronic AITP. Blocking co-stimulatory signals could induce platelet-specific T cell anergy. MMF could be used as a second line agent for the treatment of steroid-resistant AITP. Detection of plasma thrombopoietin levels play an important role in the differentiation of thrombocytopenic states caused by platelet destruction or due to bone marrow hypoplasia. Endogenous TPO level is also important on the differential diagnosis of ET and RT. Quinine- or heparin-dependent antibodies could induce thrombocytopenia. PCR-SSP is useful for the genotyping of the platelet-specific alloantigen HPA. Biotinylated platelets have an impaired response to agonists as evidenced by in vitro platelet aggregation tests.
Antigens, Human Platelet ; immunology ; Blood Platelets ; immunology ; Heparin ; adverse effects ; Humans ; Platelet Membrane Glycoproteins ; immunology ; Purpura, Thrombocytopenic, Idiopathic ; etiology ; immunology ; Thrombopoietin ; blood

OBJECTIVE: To prepare Berberine hydrochloride solid lipid nanoparticles(BH-SLN). METHODS: BH-SL-N was prepared by conventional rotary-evaporated film-ultrasonication method. Based on the single-factor experiment, BH-SLN was prepared using orthogonal design for optimization of formulation and technology. The quality of the obtained BH-SLN was evaluated. RESULTS:BH-SLN had even and regular appearance with a mean diameter of 60.5 nm,Zeta potential of —29.7 mV,drug loading of 8.69%, and entrapment ratio of 97.58%. CONCLUSION: The entrapment ratio of BH-SLN is high and the stability is good for BH-SLN prepared by conventional rotary-evaporated film-ultrasonication method, and the method is reliable.

Adult ; Aged ; Aged, 80 and over ; Female ; Humans ; Immunoglobulin D ; Male ; Middle Aged ; Multiple Myeloma ; classification ; pathology ; Retrospective Studies

BACKGROUND:Osseous deformity is one of the most common Jaw deformities in clinic, which give patients serious impact on functionality and aesthetics, so patients want to cure it strongly. Recently, Functional Magnetic System has played an increasingly important role in correcting osseous deformity because of its advantages, so it is gradual y known by people.
OBJECTIVE:This article wil give a summary of Functional Magnetic System in the progress and deficiencies, in order to have a greater development in the field of correct osseous deformity.
METHODS:We searched the PubMed database, from January 1990 to June 2013 with the key words of“magnetic, orthodontics”in English. An online search of CNKI database, Wanfang database, Chongqing VIP database from January 1990 to June 2013 was also conducted with the key words of“magnetic, orthodontics”in Chinese.
RESULTS AND CONCLUSION:Functional Magnetic System is the combination of magnetic force and the traditional function correcting device, with the aid of attraction and repulsion, we could make up for the inadequacy in the treatment of Jaw osseous deformity, including the problems of length, width and height. With the development of magnetic materials and the research of magnetic materials, Functional Magnetic System wil have a bigger development.

Objective:To observe the effect of soluble CD14 (sCD14) on the inducing activity of lipopolysaccharide(LPS) on human gingival fibroblasts(HGFs). Methods:In vitro cultured HGFs were stimulated by FITC labeled LPS at the concentration of 0 (control), 100 ng/ml, 100 ng/ml LPS+100 ?g/ml sCD14 and 100 ng/ml LPS+100 ?g/ml ENP respectively for 24 h. The binding activity of LPS to HGFs was measured in the level of mean fluorescence intensity of FITC-LPS.TNF-? and IL-6 in the culture supernatant were measured by ELISA. Results:The binding activity of FITC-LPS to HGFs and the level of TNF-? and IL-6 in culture supernatant were significantly decreased in sCD14 and ENP group(P

Objective To define the indications of direct transpedicular lag screw to treat traumatic spondylolisthesis of axis (Hangmans fracure) and to evaluate the result of the technique. Methods From February 1998 to December 2000, 22 patients with acute traumatic spondylolisthesis of axis were treated. Ten of them achieved anatomic reduction by skull traction but no acceptable stability was ensured by traction alone. Among the ten patients, eight had integral and normal shaped C2 vertebral bodies (6 male, 2 female; age ranged from 18 to 42 years with an average of 28.2 years; 5, 2 and 1 patients classified as type Ⅰ, Ⅱ and Ⅱa injuries respectively according to Levine-Edwards classification and graded as D spinal injury in 2 cases and E in 6 cases according to Frankel scale) were further fixed with transpedicular lag screw. Under general anesthesia, the patients were laid in prostrate decubitus in a prepared head-neck-chest ventral plaster plate with skull traction in place to maintain reduction and lateral image intensification was applied to confirm the reduction. A posterior midline incision from C1-C3 was performed, and soft tissue was released to expose clearly the lamina, lateral mass, superior and medial aspect of the C2 pars interarticularis (isthmus plus pedicle). Points of entry for screw insertion were located at the entrance at the posterior aspect of lateral mass. The drill bit is parallel to both of the medial and superior border of C2 pars interarticularis (usually 25?-30? cephalad to the transverse plane and 30?-35? medial to the sagittal plane). The screw hole in the posterior cortex was overdrilled with a 3.5 mm drill bit for interfragmentary compression. 3.5 mm screws (25-30 mm, determined by depth gauge) were drived in after the cortex being tapped with a 3.5 mm tap. The whole procedure was done under monitoring of "C" arm fluoroscopy for safety and accuracy. Results It costs an average of 70 minutes to finish the procedure with mean blood loss of 250 ml. Hospital stay was about 18 days. A mean follow up time of 14 months (11 to 18 months) didnt confirm any early or late postoperative complications, all cases gained bony union 3 months later with complete neurological function recovery. The range of neck rotation was restored normal with no C2,3 instability or screw loosing found. Conclusion With appropriate indications, transpedicular lag screw fixation provides good reduction and stability to Hangmans fracture. This technique can only be applied to the fractures which are reductable.