Objective To investigate the serum levels of IFN-? and IL-10 in RA patients before and after receiving total glucosides of paeony combined with vitamin D3 therapy respectively and to explore the immunology mechanism of treating RA. Methods The levels of IFN-? and IL-10 in serum were determined by Enzyme-Linked Immunosorbent Assay (ELISA). Meanwhile, the disease activity and therapeutic effect were estimated. Results The level of IFN-? was significantly higher than the healthy controls (P 0.05). The level of IFN-? was significantly decreased and IL-10 was remarkably increased after treated with TGP combined with vitamin D3 (P

Objective To study the therapeutic effect of TK/GCV in the treatment of acute graft-versus-host disease in H-2 haploidentical mice induced by CD34 + cells mixed with TK + T lymphocytes transplantation.Methods CD34 + cells were separated from male parental donors,bone marrows,meanwhile T lymphocytes were gained from their spleens and transduced by retroviral vectors comprising TK gene. Both were mixed and transfused into female F1 recipient mice,CD34 + cells and TK + T lymphocytes each F1 recipient mouse received were 1?10 5 and 1?10 7,respectively. GCV was administered at the dosage of 50 mg ?kg -1 ?day -1 for 7 by intraperitoneal injections on the day 0 or 7 after transplantation.Results Acute GVHDs appeared in all mice. Survival time of the mice treated with GCV on the day 0 or 7 after transplantation was ( 26.6 ? 4.8 ) days and ( 40.5 ? 8.4 ) days,respectively. Therapeutic effect of GCV on the day 7 posttransplantation was better than that on the day 0 posttransplantation ( P

Objective To study the therapeutic efficacy of HSV-TK/GCV in acute graft versus host disease (GVHD) produced by infusion of H-2 haplotype matched CD34 + cells in combination with TK +T lymphocytes transplantation. Methods CD34 + cells were separated from bone marrow of male donor mice, and T lymphocytes were acquired from the spleen and transfected with retroviral vectors carrying tk gene. Forty-eight female F1 recipient mice were divided into six groups. Group 1 received 1?10 5 CD34 + cells, groups 2 and 3 received 1?10 5 CD34 + cells and 1?10 7 T lymphocytes, groups 4～6 received 1?10 5 CD34 + cells and 1?10 7 TK +T lymphocytes. GCV was administered to group 5 and group 6 in the dosage of 50mg/(kg?d) for 7 days by intraperitoneal injection on day 0 and 7 posttransplant, respectively. Results All the recipient mice in group 1 survived more than 30 days and no acute GVHD symptoms emerged. Acute GVHD symptoms appeared in the recipient mice in groups 2～6 showing typical pathological manifestations. The recipient mice in groups 2～4 died of acute GVHD 3 weeks posttransplant. The survival time of recipient mice in groups 5 and 6 was 26.6?4.8 days and 40.5?8.4 days, respectively, which was significantly longer than that of groups 2～4 (P

Objective To improve the diagnosis and treatment effect of closing duodenal injury. Methods By reviewing the documents, the development in the diagnosis and treatment of duodenal injury were summarized. Results (1) Every patient with closing belly injury should be considered the possibility of duodenal injury; (2) According to the extent of duodenal injury, five common different operetion treatments wuld be adopted respectively; (3) Non-operation treatment should be given to those unable to be operated on, such methods as nutrition support, application of sandostatine etc. Conclusions Combine the operation treatment with the non-operation treatment can greatly improve the cure rate of the duodenal injury.

Levels of lipids, lipoproteins and apolipoproteins in 59 patients with cerebral infarction were compared before and after therapy. Evening—Primrose—oil group (EPOG 32cases) was treated with EPO and routine drugs (low molecular dextran, piracetam, vitamine E), the routine—drug group (RDG 27cases) was treated only with above- mentioned routine drugs. After treating for one month the lab data demonstrated that the(HDL—c, HDL2—c and apo A—I levels in EPOG were significantly higher than)before treating (P0.05). All parameters above- mentioned in RDG had no significant change after treating.

BACKGROUND:Studies have shown that chitosan and other natural polysaccharides have heparin-like anticoagulant function after sulfonated modification. Sulfonated chitosan has good anticoagulant property because the sulfonate group formed by sulfonated chitosan is similar with the active group of heparin. OBJECTIVE: To prepare the anticoagulant chitosan nanoparticles and to detect its morphology, physical and chemical properties and biological security. METHODS: Chitosan nanoparticles were synthesized by emulsion-chemical cross link. Sulfonated chitosan nanoparticles were synthesized by sulfonation reaction. Its morphology was described by transmission electron microscope. The peak-value change of its specific groups was observed by infrared spectroscopy. (1) Coagulation experiment: Heparin, chitosan nanoparticles and 10, 30 and 50 mg of sulfonated chitosan nanoparticles were added into the blood of Spraque-Dawley rats. The coagulation indicators were detected. (2) Hemolysis experiment: deionized water, physiological saline and 10, 30, 50 g/L sulfonated chitosan nanoparticles extracts were added into 2% red blood cel suspension of rabbits. The hemolysis rate was detected. (3) Cytotoxicity experiments: DMEM medium containing fetal bovine serum and 10, 30, 50 g/L sulfonated chitosan nanoparticle extracts were used to culture human umbilical vein endothelial cels. Cel relative growth rate and toxicity grading were detected after 72 hours. RESULTS AND CONCLUSION: Scanning electron microscopy showed that sulfonated chitosan nanoparticles had good morphology, with a diameter of 50 nm. Infrared spectroscopy showed that the sulfonated replacement occurred.In vitro coagulation experiments showed that sulfonated chitosan nanoparticles had significant anticoagulant effects in a dose-dependent manner. Sulfonated chitosan nanoparticles meet the national safety standard for hemolysis rate of less than 5%, non-induced hemolysis property. Cytotoxicity assays showed that sulfonated chitosan nanoparticles extracts had no significant cytotoxicity, and its biological safety was in line with the national standards.

Objective To construct a recombinant lentivirus containing human beta defensins -3 ( hBD3 ) , connective tissue growth factor gene (CTGF) and enhanced green fluorescent protein (EGFP), and to detect its translation in rabbit bone marrow mesenchymal stem cells (BMSC).Methods The lentivirus containing hBD3, CTGF and EGFP genes was constructed in vitro.The titer of lentivirus was tested with end-paint dilution assay .Rabbit BMSCs were transfected with recombinant virus.The best value of multiplicity of infection (MOI) was tested.The expression condition, transfection efficacy and genetic stability of the target genes were evaluated by using fluorescence microscopy and flow cytometry . Western blotting was used to detect the expression of the target protein .Results Recombinant lentivirus vectors: Lenti-CTGF-hBD3-EGFP, Lenti-hBD3-EGFP, and Lenti-EGFP, were successfully obtained . The titer of the recombinant lentiviruses was 3.21 ×108, 5.80 ×108, and 1.16 ×109, respectively.The best MOI value to transfect BMSCs was 150. The transfection efficacy of these lentivirus vectors was high , reaching 79.72%as assessed by flow cytometry , and it could be stably inherited .Western blotting displayed that target protein expression was successful .Conclusion The construction of recombinant lentiviruses carrying hBD3 and CTGF genes is successful and can be effectively transfected into BMSCs .

Objective To probe the periodontal ligament regeneration following the implantation of bone marrow mesenchymal cells ( BMSCs ) sheet-collagen membrane-BMSCs sheet sandwich complex.Methods BMSCs cell sheet-collagen membrane-BMSCs sheet complexes were compounded on the root surface of teeth of Beagle dogs.All the dogs were killed on 4 and 12 weeks after implantation.Periodontal ligament regeneration was observed by radiological means, HE staining and Sirus-red staining.Results Compared with collagen membrane group and blank control group, there was a clearly periodontal ligament like tissue and Sharpey′s like fibres formation in test group only.Conclustion Cell sheet-collagen membrane-cell sheet sandwich complex can effectively improve the periodontal ligament regeneration.

Animals ; Astragalus membranaceus ; Endotoxemia ; drug therapy ; metabolism ; Interferon-gamma ; analysis ; Interleukin-4 ; analysis ; Male ; Mice ; Phytotherapy ; Plant Extracts ; therapeutic use ; Th1 Cells ; drug effects ; metabolism ; Th2 Cells ; drug effects ; metabolism

Objective To summarize the experience of improved nonmyeloablative hematopoietic stem cell transplantation(NSCT) in the treatment of severe aplastie anemia. Methods Seventeen patients with Severe Aplastic Anemia received NSCT after a nonmyeloablative conditioning.The patients were conditioned with decreased dosage of immunosuppressive agents of CTX and anti-lymphoid cell globulin or anti-thymus gland cell globulins;CsA and MMF were used to prevent the graft-versus-host disease (GVHD) after transplantation. Results 75 % of severe aplastic anemia in patients with type Ⅰ and 60 % of severe aplastic anemia in patients with type Ⅱ achieved rapid hematopoietic reconstitution, with good prognosis and implantation rate with fewer complieations and light symptoms were observed. Conclusion NSCT is an effective treatment of severe aplastic anemia.