Adenoma, Villous ; metabolism ; pathology ; surgery ; Diagnosis, Differential ; Humans ; Immunohistochemistry ; Kidney Neoplasms ; metabolism ; pathology ; surgery ; Lymphoma ; metabolism ; pathology ; surgery ; Male ; Middle Aged ; Myosins ; metabolism ; Neoplasms, Multiple Primary ; metabolism ; pathology ; surgery ; Rhabdomyosarcoma, Alveolar ; metabolism ; pathology ; surgery ; Ureteral Neoplasms ; metabolism ; pathology ; surgery ; Vimentin ; metabolism

Objective: To isolate and purify the polysaccharide from Cordyceps sinensis, and analyze its structure. Methods:Cordyceps sinensis was cultured by a liquid fermentation method. A water-extraction and alcohol-precipitation method was applied to ex-tract polysaccharide from Cordyceps sinensis fermentation liquor (EPS) and polysaccharide from Cordyceps sinensis mycelium (IPS). Sephadex gel chromatography was applied to isolate and purify the polysaccharide. The purity and relative molecular weight of the poly-saccharide were determined by a gel filtration method. The monosaccharide composition of the polysaccharide was identified by GC. The content of uronic acid was analyzed by sulfuric acid carbazole method. Results: The analysis results showed that the molecular weight of EPS was 78kDa. The content of polysaccharide and uronic acid was 94. 8% and 6. 0%, respectively. EPS was composed of mannose,glucose and galactose with the molar ratio of 4. 5∶8. 0∶1. 0. The molecular weight of IPS was 42kDa. The content of polysac-charide and uronic acid was 92. 5% and 4. 5%, respectively. IPS was composed of mannose,glucose and galactose with the molar ratio of 2. 8∶3. 0∶1. 0. Conclusion:Both polysaccharide EPS and IPS in Cordyceps sinensis are heteropolysaccharide.

Adult ; Aged ; Erythrocyte Indices ; Hemorheology ; Humans ; Male ; Middle Aged ; Silicosis ; blood

Objective To explore the roles of insulin in the early treatment of acute brain injury and its administration methods.Methods 253 patients were randomly divided into the intensive insulin therapy group and the conventional therapy group.Infection rates,the short-term effect (APACHE Ⅱ assessment),and long-term efficacy (GOS prognosis) was compared between two groups.Results The results of the strengthen treatment group in the rate of infection (25.95％ vs 39.34％,x2 =5.17,P ＜0.05),the short-term effect (11.33 ± 7.66 vs 16.49 ± 14.97,u =3.42,P ＜ 0.05) and the long-term efficacy (40.46％,55.73％,3.82％ vs 25.41％,68.85％,5.74％,x2 =7.62,P ＜0.05) were significantly better than the conventional therapy group with the statistically significant differences (P ＜ 0.05).Conclusions The hypoglycemic effect,neuroprotective effect,regulatory role,and nutrition role of insulin occurred in the early treatment of acute brain injury.After acute brain injury,patients with hyperglycemia should be treated early with an enough volume,continuous,and uniform insulin.

BACKGROUND:Studies have shown that intramuscular transplantation of xenogeneic umbilical cord mesenchymal stem cel s in a certain dose range is safe and reliable, and it also confirm that this approach is equal y safe and effective for heart failure in rats with dilated cardiomyopathy. OBJECTIVE:To explore the effect of human umbilical cord mesenchymal stem cel s through intramuscular injection on the cytokine expression in adriamycin-induced dilated cardiomyopathy (DCM) rats. METHODS:Total y 160 rats were randomly divided into control group (n=20) and DCM group (n=140). Rats in the DCM group were administered adriamycin intraperitoneal y to establish DCM model. The DCM rats were randomly subdivided into model control group (served as model group), cel supernatant group, the low-dose mesenchymal stem cel group (served as low-dose group), the middle-dose mesenchymal stem cel group (served as middle-dose group), and the high-dose mesenchymal stem cel s group (served as high-dose group). Secondary injection was performed at 4 weeks after first injection. RESULTS AND CONCLUSION:The ELISA test showed that the serum levels of vascular endothelial growth factor (VEGF), hepatocyte growth factor (HGF), leukemia inhibitor factor (LIF) and granulocyte macrophage colony stimulating factor (GM-CSF) were higher in the model group than the control group before and after intramuscular injection (P<0.05). After intramuscular injection, the levels of HGF, LIF, GM-CSF and VEGF in the low-dose group were increased significantly (P<0.05), which were significantly higher than those in the model group (P<0.05). The level of LIF in the middle-dose group was significantly elevated after injection (P<0.05), while there were no significant differences in HGF, VEGF and GM-CSF levels in the high-dose group before and after intramuscular injection (P>0.05). Both the immunohistochemical and RT-PCR results showed that the expressions of insulin-like growth factor-1, VEGF and HGF were increased in al the DCM rats as compared with the control group, which were increased most in the middle-dose group. These findings indicate that low-dose and middle-dose human umbilical cord mesenchymal stem cel s intramuscular injection can increase the serum levels of HGF, LIF, GM-CSF, VEGF and the expressions of IGF-1, HGF and VEGF in the myocardium of DCM rats.

Aim To study the therapeutic effect of hesperidin (HDN) on adjuvant arthritis (AA) in rats and its mechanisms.Methods Freund's complete adjuvant (FCA) was used to induce AA in rats. Secondary paw swelling of AA rats was measured with volume meter. Splenic lymphocyte proliferation response induced by concanavalin A (ConA) or lipopolysaccharide (LPS) was examined with MTT assay. IL-2 production of splenic lymphocytes and IL-1, IL-6,TNF-? productions of peritoneal macrophage (PM?) were determined by radio-immunity assay.IL-10 production of PM? was estimated by enzyme linked immunosorbent assay (ELISA).Results The secondary inflammation of AA rats appeared on the 12th day after injection of FCA. At the same time (d 12), HDN (40,80,160 mg?kg-1,?12 d) were given to AA rats by intragastric administration. It was found that HDN(80, 160 mg?kg-1) could significantly inhibit the secondary paw swelling of AA rats from the 20 th day.The suppressed lymphocyte proliferation and IL-2 production of splenic lymphocytes in AA rats were reversed by treatment with HDN. Meanwhile,HDN could remarkably down-regulate IL-1,IL-6,TNF-? productions of PM? and up-regulate IL-10 production of PM?.Conclusions The results suggested that HDN had therapeutical effect on AA rats. Its mechanisms may be related to adjusting abnormal immune function in AA rats and keeping the balance of cytokine network.

Dideoxynucleosides ; False Positive Reactions ; Fluorine Radioisotopes ; Fluorodeoxyglucose F18 ; Humans ; Inflammation ; diagnosis ; Neoplasm Staging ; Neoplasms ; diagnosis ; metabolism ; pathology ; radiotherapy ; Positron-Emission Tomography ; methods ; Radiotherapy, Intensity-Modulated ; Sensitivity and Specificity ; Tomography, X-Ray Computed ; Treatment Outcome

Objective To investigate the effect of CDA-Ⅱ on the cell cycle progression of breast cancer cells.Methods The effects of CDA-Ⅱ on growth curve, cell cycle progression and morphology of breast cancer cell lines MCF-7 and MDA-MB-231 were observed when CDA-Ⅱ and MCF-7 or CDA-Ⅱ and MDA-MB-231 were blended to cultivate in vitro, in comparison with the classical cell differentiation inducer ATRA. Results CDA-Ⅱ decreased the growth speed and inhibit proliferation ability in breast cancer cell lines MCF-7 and MDA-MB-231.It caused G0/G1 phase block of cell cycle and reduced the rate of S phase of breast cancer cells. Conclusion CDA-Ⅱ has remarkable effect of anti-cell-proliferation and can induce cell cycle block of G0/G1 on breast cancer cells. This results provide experimental bases for the treatment of breast cancer with CDA-Ⅱ.

Objective: To investigate the possible mechanism of neuroprotection produced by taurine supplement on brain in young rats. Methods: In vitro, taurine treatment or co-treatment with sodium selenite that produced significant neuronal apoptosis was used in cultured cortical neurons to examine the neuroprotection effect using MTT assay and DNA fragmentation electrophoresis. In vivo, female weanling Sprague Dawley rats were divided into four groups, eight rats per group. The treated groups were fed on diets with different contents of taurine respectively, and the control group was fed on taurine unsupplemented diets. The experiment lasted five weeks. Results: Taurine significantly increased neuronal survival in dose-dependent manner. The typical DNA ladder pattern could be prevented by taurine. Taurine could elevate brain wet weight, and significantly increased the level of taurine, protein and AChE in brain. Conclusion: It is proposed that the neuroprotection effect of taurine could be achieved by modulating expression of related genes and blocking neuronal apoptosis.

Objective· To identify the effect and potential mechanism of gambogic acid (GA) on natural killer/T-cell lymphoma (NK/TCL) cell lines.Methods · SNK-1,SNK-6 and SNT-8 were incubated with various concentrations of GA for 24 h,and cell viability was detected with CCK-8 assay.Cell apoptosis was examined by Annexin V-FITC/PI staining assay.Levels of proteins regulating cell apoptosis and phosphorylation levels of proteins in key signaling pathways were detected by Western blotting.Results · GA showed a potent effect on reduction of cell viability of NK/fCL cell lines in CCK-8 assay.GA increased the percentages of Annexin V positive cells and induced activation of caspase-3 and caspase-9,cleavage of PARP as well as the reduction of Bcl-xl.GA also inhibited the phosphorylation levels of STAT3 in SNK-1 and SNT-8,and ERK1/2 in SNK-1 and SNK-6 significantly.Conclusion· GA induces cell apoptosis in NK/TCL cell lines SNK-1,SNK-6 and SNT-8.Anti-apoptosis protein Bcl-xl and signaling pathway JAKs/STATs and MEK/MAPK might be involved in this process.