Cancer has become the second largest life-threatening disease nowadays.Radiotherapy and chemotherapy are still important treatments for cancer.However, they tend to produce a lot of serious adverse effects including bone damage and bone marrow fat, etc.Based on recent research, the research progress on canonical Wnt pathway and its impact on stromal stem cells differentiation into osteoblasts and adipocytes are reviewed.Radiochemotherapy-induced bone damage and bone marrow fat is closely related to canonical Wnt pathway.In experimental assay and clinical application, Wnt pathway antagonists, such as Dickkopf-1 (DKK-1), sclerostin, and secreted frizzled-related protein 1 (sFRP-1) are used to relieve bone damage.Wnt pathway is expected to become a potential target for the therapy of bone damage and bone marrow fat induced by raidochemotherapy.

BACKGROUND:Total knee arthroplasty mainly used fixed platform, but more and more movable platform was selected year by year in the clinic. Rotary platform theoretical y can apparently improve the curative effects, but it has not been verified in the clinic.
OBJECTIVE:To summarize the design characteristics and clinical results of Gemini MKII (Link, Germany) rotary platform.
METHODS:From January 2004 to January 2009, 108 patients (119 knees) including 31 males and 77 females were treated with total knee arthroplasty by using Gemini MKII system. There were 97 unilateral cases and 11 bilateral cases at the first stage of replacement. Preoperative diagnosis:1 case of hemophilic arthritis, 1 case of venereal Charcot’s disease, 8 cases of post-traumatic arthritis, 11 cases of rheumatoid arthritis, and 87 cases of degenerative osteoarthritis. The prosthesis was fixed with bone cement. None received patel ar replacement. RESULTS AND CONCLUSION:None experienced infection, femoral condyle fracture or nerve and vascular damage. Except bilateral replacement, the average operation time of unilateral replacement was (56±13) minutes. Average postoperative hemoglobin decreased (25±5) g/L. After replacement, hemoglobin maintained over 100 g/L in 83 patients (86%), without blood transfusion. Knee joint score and function score recovered to (92.0±4.7) points and (90.3±6.8) points at half years after replacement, and became (94.4±3.2) points and (91.6±5.9) points during final fol ow-up, which was significantly improved as compared with that pre-replacement (P<0.01). No revision surgery should be done for lining prolapse or spin out, osteolysis and prosthesis loosening. These results indicated that the early and midterm results of Gemini MKII rotating-platform prosthesis were satisfactory, but the long-term results remain to be confirmed.

Objective To investigate the effects of different dose of tranexamic acid in fibrinolysis during liver transplantation. Methods Sixty ASA Ⅱ~ Ⅳ liver transplant recipients, were randomly, double-blind assigned to one of 3 groups (n = 20): group control (group C), group tranexamic acid 1 (group T1) and group tranexamic acid 2 (group T2). The patients in group C received a loading dose of normal saline 10 mL, then continued infuse normal saline at 20 mL/h until neohepatic phase 120 min, while in other two groups, patients received a loading dose of tranexamic acid 1 g, totally 10 mL, followed by continuous infusion at 10 mg/(kg·h) in group T1 or 20 mg/(kg·h) in group T2 until neohepatic phase 120 min. Prothrombin time, fibrinogen, fibrin degradation product and D-dimers were measured before operation (T0), 120 min after the skin incision (T1), nonhepatic phase 30 min (T2), neohepatic phase 120 min (T3). Blood loss, fresh frozen plasma dosage, fibrinogen dosage and thromboembolic events were recorded. Results The plasma concentration of fibrin degradation product and plasma concentration of D-dimers were different in the 3 groups, group T2< group T1 0.05). Conclusions Continuous infusion of tranexamic acid can inhibit fibrinolysis during liver transplantation. No adverse event of thrombosis was detected. Larger dose of tranexamic acid can reduce blood loss and fresh frozen plasma transfusion.

Objective To investigate parenteral nutrition and enteral nutrition therapy for esophageal cancer patients nutritional status improvement.Methods Totally 63 patients with esophageal cancer were chosen,preoperative Nutritional Risk Screening 2002 (NRS2002) nutritional screening through joint after parenteral nutrition and enteral nutrition therapy.Patients with intestinal tolerability and complications after surgery on days 1 and 7 days nutrition indicators were observed,including total serum protein,albumin,prealbumin,hemoglobin,and lymphocyte count.Results Preoperative risk malnutrition occurred in 39 patients.Compared to patients on day 1 after the first 7 days,serum levels had no significant difference in total protein.Albumin,prealbumin,hemoglobin,and lymphocyte counts were significantly different statistical significance (P ＜ 0.05).Conclusions NRS2002 for nutritional screening patients at risk of malnutrition can be determined,and the combined parenteral and enteral nutrition therapies can improve nutritional status of patients with esophageal cancer.

Objective To investigate the effects of glutathione protected gold nanoclusters (GSH-Au NCs) on HeLa cytotoxity.Methods Fluorescence intensity were measured on GSH-Au NCs containing medium treated cells using fluorescence spectrophotometer at different time points.GSH-Au NCs uptake by HeLa cells at 1,2,6,12 and 24 h were investigated through fluorescent spectrophotometer.In vivo tumor uptake was also investigated on BALB/c tumor-bearing mice through inductively coupled plasma mass spectrometry (ICP-MS) at 24 h after intraperitoneal injection of 0.2 ml GSH-Au NCs (3 mmol/L) and distilled water (control group) respectively.The cytotoxicity of GSH-Au NCs at different doses (0.003-0.3 mmol/L) was tested at 24 and 48 h using MTT assay after interaction with HeLa cells.Results The uptake efficiency of GSH-Au NCs by HeLa cells kept increasing and reached maximum of 73.13％ at 24 h.The results of tumor-bearing mice indicated that the tumor tissue had higher uptake efficiency after 24 h (320±15) ng/g than that of control group (intraperitoneal injection of distilled water),and the difference was stastically significant (P＜0.05).HeLa cells were treated with different concentrations of GSH-Au NCs for 24 h,and GSHAu NCs had a slight effect on cell viability.With the increase of GSH-Au NCs dose,the inhibition effects on growth of HeLa cells enhanced.The cell activity of HeLa cells treated with 0.3 mmol/L GSH-Au NCs for 24 h reduced to 86％compared with that of control group (the concentration of GSH-Au NCs was 0) (P＜0.05),while there was no significant difference between the survival rate of different concentrations of GSH-Au NCs group and the control group for 48 h.Conclusions GSH-Au NCs have neglectable cytotoxity on HeLa cells even though both in vitro and in vivo uptake are high.GSH-Au NCs are suitable for biomedical application such as imaging,drug loading and targeted drug delivery.

Objective: To investigate activities of lipo-related enzymes in ventromedial hypothalamic obese rats at acute phase in fed state. Methods: Female SD rats were divided into two groups, one group received bilateral electrolytic lesions of ventromedial hypothalamus(VMH), and another one was used as sham control. Samples of blood, livers, and subcutaneous, parametric and mesenteric adipose tissues ,and gastrocnemius were collected one week after VMH lesions and sham operations in fed state. Results: Serum insulin in VMH group was higher than that in sham group, meanwhile serum free fatty acids in VMH group were lower (P

Objective To investigate an effective method of breathing apparatus management. Methods According to the defect in process of breathing machine management, breathing apparatus management center was set up, related standards and procedures were established, the staff training was intensified and the management mode was expanded. Results The qualified rate of ventilator sterilization and breathing apparatus function were improved to 100% by applying zero defect quality management. Conclusion It is an effective method to ensure the safety and accuracy in breathing machine manage- ment with applying zero defect quality management.

Objective: To investigate the effects of green tea polysaccharides (TPs) on glucose metabolism and the activity of peroxisome proliferator-activated receptor gamma (PPAR-?) in KKAy type 2 diabetic mice. Methods: Glucose tolerance test, fasting and postprandial glucose, gluconeogenesis, and insulin sensitivity were investigated in type 2 diabetic mice with orally administered TPs at the dose of 500mg/kg for 4-10 w. Effect of TPs on activity of PPAR-? was tested in vitro. Results: TPs could not only improve glucose tolerance, but also reduce fasting and postprandial blood glucose. In addition, TPs could inhibit gluconeogenesis and enhance insulin sensitivity in KKAy diabetic mice. TPs had also an effect of activating of PPAR-? with dose-response. Conclusion: TPs have beneficial effect of lowering blood glucose in KKAy type 2 diabetic mice, which may be induced by enhancing insulin sensitivity by activating of PPAR-?.