Organ-specific tumor cell adhesion to extracellular matrix (ECM) components and cell migration into host organs often involve integrin-mediated cellular processes. Direct integrin-mediated cell adhesion to ECM components in the space of Disse appears to be required for the successful liver metastatic formation of colon cancer. In the present study, human colon cancer HT-29 cells were transfected by liposome with integrin-beta(1) antisense oligodeoxynucleotide (ASODN). The integrin-beta(1) gene expression in HT-29 cells was significantly down-regulated. The migration of HT-29 cells was assayed using transwell cell culture chambers in vitro. The number of migrating HT-29 cells in experimental group was far less than that in control group (P<0.05). The models of hepatic metastasis in nude mice were established by the intrasplenic injection of transfected HT-29 cells. Thirty days later, the nude mice were killed and the average number of hepatic metastases (4.00+/-0.93 per mouse), average volume (10.10+/-6.50 mm(3) per mouse), average weight (0.0440+/-0.0008 g per mouse) in experimental group were remarkably reduced as compared with those in control group (P<0.05). Integrin-beta(1) expression in the hepatic metastasis was studied by immunohistochemistry (SP). Positive cell percentage of hepatic metastases in experimental group was markedly decreased as compared with that in control group (P<0.05). It was concluded that integrin-beta(1) may take part in hepatic metastasis, and down-regulation of integrin-beta(1) expression may play a key role in decreasing migration and hepatic metastasis of human colon carcinoma cells (HT-29).

Objective To evaluate the effect of try psin on the proliferation,migration and adhesion of a skin squamous cell carcinoma cell line A431.Methods Cultured A431 cells were divided into several experimental groups treated with trypsin at concentrations of 0.1,1,10 and 100 nmol/L for 24,48 and 72 hours respectively,and a control group treated with DMEM complete medium only.Cell counting kit-8 (CCK8) assay was conducted to evaluate cellular proliferative activity to select the optimal concentration of trypsin.Then,some A431 cells treated with trypsin at the selected concentration for 24,48 and 72 hours respectively (or 48 hours only) served as the experimental groups (or group),and other A431 cells treated with DMEM complete medium served as the control group.Flow cytometry was performed to assess cell cycle distribution and proliferation index,fibronectin-based adhesion assay to estimate cell adhesive capacity,and wound healing assay and Transwell assay were conducted to evaluate the migratory capacity of cells in two-and three-dimensional space.Statistical analysis was carried out by using analysis of variance,paired samples t test and chi-square test.Results The proliferative activity of A431 cells increased along with the increase of trypsin concentrations,with the strongest increasing effect observed at 100 nmol/L.After treatment with 100 nmol/L trypsin,the experimental group showed a decrease in the percentage of G1-phase cells,but an increase in the percentage of S-phase cells,proliferation index,migratory and adhesive capacity compared with the control group (all P ＜ 0.05).Conclusion Trypsin can promote the proliferation,migration and adhesion of A431 cells.

Objectve To investigate the application value of ultraifltration with millipore ifltration method test of old biological samples DNA. Methods 23 old blood samples separately were cut blood piece equally suitable size of three groups, labeled A, B and C group. DNA was extracted by magnetic bead methed and get DNA template with 80μL, 80μL, 20μL elution solution, respectively, then the DNA template in group A and C take right amount directly ampliifed, group B with milipore ultraifltration ifltration condensed amplication. PCR products were detected by ABI3130xl genetic analyzer and analyzed by GeneMapperID V3.2 software. The date were analyzed by using SPSS software. Results No samples were ampliifed for all STR loci in group A. There were 18 cases in group B samples amplified all STR loci and 11 samples in group C. Conclusion Application of millipore ultrafiltration method can signiifcantly improve the old biological samples DNA classiifcation success rate.

Objective To study the optimum preparation process of gastrodin liposome, characterization its structure.Methods Perpared gastrodin liposome with film-ultrasonic method.The entrapment efficiency as index, quality between lecithin and cholesterol ratio, oil-water phase volume ratio and ultrasonic time as factors by L9 (34 ) orthogonal test to optimize the preparation process.Observed the liposome morphology, particle size and distribution under the microscope, and determined the entrapment efficiency and stability.Results Regression equation was Y=239.75 +0.0207X(n=5), R2 =0.9996, 0.002 to 0.010 mg/mL had a good linear relationship.The optimum of preparation process: lecithin and cholesterol quality ratio was 4:1, water and oil phase volume ratio of 3:1, ultrasonic time control for 60 min;Liposomes showed spherical or oval shape, regular shape, uniform size.The average entrapment efficiency was 60.65%, the average particle size distribution at 327 nm, and it had good stability.Conclusion The preparation of gastrodine liposome has advantages of simple, higher entrapment efficiency and even particle size.The method can be used for embedded water-soluble medicine.

C1q /TNF-related proteins (CTRPs)belong to the same category of C1q /TNF-related protein family,mainly secreted by adipose tissue and widely expressed in human and rodent.Their function turned out to be metabolic modulation,cardiovascular system protection and suppression of inflammation.But for metabolic modulation,enhancing the synthesis of glycogen,promoting fatty acid uptake and oxidation,in-creasing insulin sensitivity is the major role of CTRPs playing in governing the metabolism.Each CTRP has its own unique tissue expression profile and nonredundant function in regulating sugar and /or fat metabo-lism.In this review we focus on the recent progress about the metabolic function of CTRPs.

AIM: To investigate the relationship between serum soluble E-selectin (sE-selectin) and insulin resistance, serum uric acid, serum lipid in essential hypertension patients. METHODS: Fasting serum sE-selectin concentration, plasma glucose, serum insulin, serum uric acid, total cholesterol, triglycerides, high density lipoprotein-cholesterol, low density lipoprotein-cholesterol were determined in 186 patients with essential hypertension (75 males, 111 females). Homeostasis model assessment was applied to assess the status of insulin resistance (HOMA-IR). RESULTS: Based on the HOMA-IR, the essential hypertension patients were divided into insulin-sensitive individuals (IS) and insulin resistant subjects (IR). The serum sE-selectin concentration was significantly higher in male group [(50.1?17.8)?g/L] than in female group [(40.6?16.6)?g/L] (P

Objective To investigate the prevalence of toxoplasma gondii (Tox),rubella virus (RV),cytomegalovirus (CMV) and herpes simplex virus (HSV) infections (TORCH infections) among childbearing-age population in Henan province.Methods Enzyme-linked immunosorbent assay (ELISA) was applied to detect plasma TORCH IgM and IgG among 3084 childbearing-age men and women from theFirst Affiliated Hospital of Zhengzhou University during July and September,2011.The positive rates of anti-TORCH antibodies were compared among the various age and gender groups by x2 test.Results The total positive rate of anti-TORCH IgM was 5.5％ (170/3084),in which the positive rate of anti-RV IgM was the highest (2.9％),followed by anti-HSV IgM (1.0％).Within positive rate of anti-TORCH IgG,anti-HSV IgG was the highest (90.4％),followed by anti-CMV IgG (89.7％),RV IgG (48.1％) and Tox IgG (0.7％).The positive rate of anti-TORCH IgM was the lowest in individuals aged ＞ 30-40 year old.With the age increasing,the positive rates of anti-Tox IgG,anti-CMV IgG and anti-HSV IgG increased,but the positive rate of anti-RV IgG decreased.Women had higher positive rates of anti-CMV IgG and antiHSV IgG than men (x2 =83.470 and 7.026,P ＜ 0.O1).Conclusions Current infection of TORCH exists in childbearing-age population of Henan province,and the positive rate of anti-RV IgG is low.It is recommended to screen for TORCH infection in childbearing-age men and women.

AIM: To investigate the effects of internal change of serum insulin and plasma glucose levels on serum free fatty acid (FFA) concentrations after glucose loading. METHODS: Serum insulin, plasma glucose and FFA concentrations were measured simultaneously in 234 essential hypertension patients who were undergoing oral glucose tolerance test (OGTT) [ including 20 cases with 2 type diabetes mellitus (DM), 74 impaired glucose tolerance (IGT), 140 normal glucose tolerance (NGT); 98 males, 136 females]. RESULTS: Fasting serum FFA concentration (?mol/L) in DM ((1 048.47)?481.6) was higher than that in IGT (760.1?332.1) (P

Objective This study is based on the physicians'appraisal system upon HIS system to annually assess the associate chief physicians in clinical departments in the mode of attending in charge. Methods 74 doctors above the title of associate chief physician from 14 departments in such mode were selected as objects of study and evaluated upon relative requirement of the performance appraisal index system by means of brainstorming,expert consulting and so on to confirm the content,standard and scoring method of appraisal.Work efficiency index and work amount can be acquired out of HIS system, while details and problems during the assessment can be dealt together with clinical practice.Finally all index and results were collected through HIS system and total scores of relative doctor can be automatically calculated.SPSS 13.0 statistics software also can be used to descriptively analyze the frequency and percentage data.Results The total appraisal scores and scores in every grade of the 74 doctors,who are attending in charge with title above associate chief physician as well as bearing the same responsibility in both medicine and surgery department,were collected,analyzed and respectively ranked respectively.Conclusion The results of appraisal basically indicate general level of the doctors,as well as provide strong evidence for enhancing human resource management of the hospital, which will continuously improve the basis for assessment to performance of associate chief physician under mode of attending in charge,as well as collect experiences for deeply optimizing program of assessment system.

BACKGROUND: Immunoloregulation of mesenchymal stem cells (MSCs) is commonly approved. Previous studies have confirmed the ability of Flk-1~+ bone marrow MSCs (BMSCs) to inhibit T/B lymphocyte proliferation in vitro. OBJECTIVE: To investigate the therapeutic effect of Flk-1~+ BMSCs in collagen-induced arthritis mice.METHODS: A total of 18 healthy male DBA-1(H-2K~q) mice aged 10 weeks were randomly divided into 3 groups. All the mice were injected at the base of the tail with bovine type II collagen (CII), and received a booster injection of CII on day 21 to establish the CIA mice model. DBA-1(H-2K~q)mouse Flk-1~+ BMSCs were isolated in vitro by the density gradient centrifugation and adherence screening. Following initial immunity, mice in the cell transplantation group were infused with Flk-1~+ BMSCs (1-2)×106 cells/mouse via the caudal vein. Mice in the cell transplantation group were injected with the same volume of Flk-1~+ BMSCs during booster. Mice in the model control group were injected with an equal volume of saline 0 or 21 days following initial immunity. Following initial immunity and booster immunization, claw pad thickening and clinical score were observed, changes of joint pathology and dynamic changes in serum factor mass concentration were determined in mice. RESULTS AND CONCLUSION: Compared with the model control group, no significant difference in claw pad thickening and mean clinical score was detected in the cell transplantation group following initial immunity (P > 0.05), with the presence of obvious damage to synovial membrane and inflammatory cell infiltration. Mass concentration of each serum cell factor was similar. The claw pad was significantly thickened (P < 0.01), mean clinical score reached 3.35 points, with severe damage to synovial membrane, proliferation of blood capillary in the cell transplantation group following booster immunization. Interleukin-6 levels were greatly increased at day 28 following initial immunity (P < 0.1), but decreased at day 35 following initial immunity (P < 0.1). Results indicated that in the collagen-induced arthritis mouse models, Flk-1~+ BMSC transplantation did not obtain prospective therapeutic efficacy, but aggravation of arthritis was observed in the cell transplantation group following booster immunization. Upregulation of interleukin-6 concentration could aggravate the behavior symptom of rheumatoid arthritis mice.