OBJECTIVETo evaluate the influence of naringin on PMMA-induced osteoclastic bone resorption using the mouse air sacs model.

METHODSTotal 48 female Balb/c mices with the age of 8 to 10 weeks were chosen in the study. Air were injected into the back in 32 mices and formed the air sacs, 6 d later, the skulls (originated from other 16 mices) were implanted to the air sacs. Thirty-two animals were divided into naringin treatment group (with 2 concentrations of 150 mg/kg and 30 mg/ kg) , DMSO group and PBS blank group, 8 animals in each group. Polymethylmethacrylate (PMMA) particles were injected into the air sacs in naringin treatment groups and DMSO group so as to irritate inflammatory reaction. Naringin with 2 concentrations of 150 mg/kg and 30 mg/kg were dissolved in DMSO of 0.2 ml, and were injected into air sacs, respectively. In PBS black group, no stimulation with PMMA particles, only injected PBS, and in DMSO group, injected DMSO without naringin. Tartrate resistant acid phosphatase (TRAP), Ca2+ release, modified Masson stain and histological analysis were performed on the 7th day after stimulation.

RESULTSCompared with DMSO group, naringin treatment group's cellular infiltration decreased (P < 0.01); concentration of 150 mg/kg was better than that of concentrations of 30 mg/kg (8.90 ± 1.75 vs 15.23 ± 1.86). Naringin can decrease calcium release in the lavage of the air sacs bone resorption model, especially obvious in naringin with concentration of 150 mg/kg. Naringin can ameliorate the inflammatory reaction and the subsequent bone resorption (including bone collagen loss, TRAP positive cells amount and so on) in air sacs with bone implant and PMMA particles. Naringin with concentration of 150 mg/kg appeared to be an optimal dosage to deliver the therapeutic effects.

CONCLUSIONNaringin inhibits PMMA-induced osteoclastogenesis and ameliorates the PMMA-associated inflammatory reaction and the subsequent bone resorption.

Animals ; Disease Models, Animal ; Female ; Flavanones ; therapeutic use ; Mice ; Mice, Inbred BALB C ; Osteoclasts ; drug effects ; physiology ; Osteolysis ; chemically induced ; prevention & control ; Polymethyl Methacrylate ; toxicity

Objective To investigate the effect of Icariin ( ICA) experimental IgA nephropathy in rats and to explore related mechanisms .Methods Experimental IgA nephropathy rat model was established and then model rat were treated with or without different doses of ICA .Then, urine RBC, Urine protein and urine NAG were analyzed; IgA precipitation was detected with immunofluorescence staining;the protein level of NF-κBp65 and MCP-1 were examined by immunohistochemical staining;the mRNA level of IL-4, IL-10 and IL-13 were determined by quantitative PCR .Results The concentrations of urine RBC, Urine protein and urine NAG were reduced after ICA treatment , as companied by a decrease of IgA precipitation .Moreover, ICA treatment also decreased the protein level of NF-κBp65 and MCP-1, and the mRNA level of IL-4, IL-10 and IL-13.Conclusions ICA exerts a certain degree of efficacy on the treatment of experimental IgA nephropathy through regulating NF-κBp65 and MCP-1 expression and the immunoregulation mechanism .

Objective To investigate the applying comparative values of anticoagulant and thrombolytic Sak-hirudin fusion protein used in cardiopulmonary bypass.Methods From february 2013 to July 2014,selected nitinol sheet into uncoated group (group A),base coated group (chitosan,group B),chitosan/ Sak group (group C),chitosan/hirudin group (group D),chitosan/Sak-hirudin fusion protein group (group E),there were included in the fresh round of blood hemolysis,the blood cell hemolysis rates were calculated.Meanwhile used the healthy newborns umbilical vein endothelial cells were added into various categories nitinol sheet for cell compatibility testing.Results The samples hemolysis rates in the 5 groups were around 1.5% and the RBC,WBC and PLT counts compared in the 5 groups were showed no differences (P <0.05).The ex-tent of proliferation and adhesion in the group E were significantly lower than the other four groups,compared to significant differences (P <0.05).There were no differences to compare group A and group B (P >0.05).Randomized double-blind cell count result shows that the group C,D and E compared to the group A,B were more significant differences (P <0.05), at the same time,the group E compared to the group C,D differences were statistically significant (P <0.05).Conclusion Compared to Staphylokinase and hirudin alone,Sak-hirudin fusion protein used in cardiopulmonary bypass can play stronger anticoagulant and antithrombotic effects,its safety and ensures the effectiveness that interventional treatment of cardiovascu-lar disease.

Objective To appraise the diagnosis value of pleural membrane biopsy on pleural effussion.Meth- ods 218 patients with pleural effusion who were had pleual menbrane biopsy were retrospectively analyzed.Among them 165 cases were done only once,42 cases were done twice,11 cases were done three times.They were done 271 times of biopsies.Results The pleural membrane biopsy always masculine gender rate was 72.0%,1 pleural mem- brane biopsy succeeds the masculine gender rate was 59.6%,after the masculine gender rate which 2 pleural mem- branes biopsies succeeds was 69.7%.The illness complication formation rate was 8.7%.Conclusion Pleural mem- brane biopsy is a simply,safe and higher diagnosing-rate method.The different spot pleural membrane biopsy may cnhance diagnosis rate.

Objective To evaluate the timing of postoperative parenteral nutrition support for gastrointestinal tumor patients with a definite nutritional risk.Methods Using a randomized control clinical research methods,80 gastrointestinal cancer patients were randomly divided into study group (40 cases) and control group (40 cases).In the study group parenteral nutrition support started on postoperative day 2,while in the control group it started on postoperative day 1.Flatus passing,the rate of infectious complications,the rate of systemic inflammatory response syndrome,postoperative nutrition support related expenses,and the duration of postoperative hospital stay were recorded.Results There was no significant differences between the two groups (P ＞ 0.05) in age,sex,body mass index,use of glutamine,disease and type of surgery.Compared with the control group,patients in the study group had earlier postoperative flatus passing [(3.33± 1.10) d vs.(4.03 ± 1.51) d,P =0.020],less systemic inflammation response syndrome (8/40 vs.17/40,P =0.030),shorter postoperative hospital stay [(3.33±1.10) d vs.(4.03±1.51) d,P=0.020] and lower nutrition support costs [(2144.49 ±1210.96) RMB vs.(2915.99 ± 1615.68) RMB,P =0.018].There was no significant difference in postoperative nutrition index,peristalsis recovery time and infectious complications between the two groups (all P ＞ 0.05).Conclusions In patients undergoing surgery for GI tumors,parenteral nutrition support started on post-op day 2 promotes the recovery of gastrointestinal function,while decreasing medical cost.

30 patients with colorectal carcinoma underwent endoscopic ultrasonography(EUS)and microvessel counting for staging before operation.The accuracy of EUS in assessing depth of tumor in- filtration was 76.7%,that in detecting lymph node involvement being 73.3%.The correctness of pre- operative Duke's staging remained 70%.Microvessel counting correlated with depth infiltration and lymph node invasion.The microvascularity in tumor with serosal involvement was obviously abundant than that without,so as in tumor with and without lymphatic invasion.The results revealed that both EUS and microvessel counting can be considered as an essential evidence for preoperative staging of col- orectal cancer and thereby for predicting prognosis.

BACKGROUND: The soft tissues would shrink with nasal framework collapse following surgical trauma, which cause aseptic inflammation, lead to parts of cartilage resorption. Accordingly, long-term saddle nose deformity usually accompanied by short nasal columella. Complications such as skin perforation or ulceration would appear if corrected the deformity using medical silicone rubber with large tension.OBJECTIVE: To explore the effectiveness of repairing post-traumatic saddle nose deformity with autologous costal cartilage transplantation.METHODS: A total of 21 cases with post-traumatic saddle nose deformity accompanied by short nasal columella were selected, including 6 males and 15 females, aged 16 45 years. All of the cases had trauma history and agreed with the treatment. The costal cartilage was obtained from the seventh rib and formed to babylon weeping willow leaf shape and columella nasi stent to repair post-traumatic saddle nose deformity. The "V-Y" progradation suture was used in the philtrum introcession and the botton of nasal columella to extend the nasal columella. The recovery of saddle nose deformity after transplantation, discharge of transplanted cartilage, as well as the incision scar status was observed.RESULTS AND CONCLUSION: The results were satisfactory and there were no complications after transplantation. All the cases were followed up from 6 months to 2 years. No case suffered costal cartilage grafts discharge or chondral deformation. The scar was little at the bottom of nasal columella. It is an ideal method for repairing post-traumatic saddle nose deformity using transplantation of autologous costal cartilage with "V-Y" progradation suture.

BACKGROUND:At present, few studies concerned pulmonary infection after treatment of senile fracture. For special parts of senile patients, there are no studies on complications of pulmonary infection in perioperative period after hip fracture. OBJECTIVE:To study risk factors for pulmonary infection in patients with senile hip fractures in perioperative period. METHODS:The data of 46 senile hip fracture patients with perioperative pulmonary infection were retrospectively analyzed. A matched case-control study was conducted in 46 senile hip fracture patients without pulmonary infection in the same hospital and the same period. The difference in perioperative various clinical indexes was compared between the two groups. Risk factors of pulmonary infection received Logistic regression analysis. RESULTS AND CONCLUSION:Multivariate analysis screened out 14 possible perioperative pulmonary infection factors:chronic obstructive pulmonary disease, smoking, diabetes mel itus, heart disease, mechanical ventilation, intraoperative bleeding amount, erythrocyte infusion, operation time, preoperative low body mass index (body mass index<18.5 kg/m2 ), serum albumin<35 g/L, electrolyte disturbance, time of entering intensive care unit and length of stay. Logistic regression analysis displayed that chronic obstructive pulmonary disease (OR=23.317;95%CI:2.702-60.312;P=0.000), entering intensive care unit (OR=7.890;95%CI:2.624-76.012;P=0.008), mechanical ventilation (OR=35.210;95%CI:8.464-131.203;P=0.017) and operation time (OR=12.122;95%CI:5.154-99.098;P=0.012) were independent risk factors for perioperative pulmonary infection in patients with senile hip fracture. These data indicated that one should be alert to the possible occurrence of pulmonary infection in senile hip fracture patients with the presence of chronic obstructive pulmonary disease, entering intensive care unit and mechanical ventilation.

With development of wide-host-range vector systems,Tn5 transposon and its derivative vectors have been widely applied to genetic research of gram-negative bacteria.The applications of Tn5 transposon mutagenesis technology to genetic researches of bacteria were briefly discussed,including researches on biological control mechanisms of biocontrol bacteria,identification of bacterial essential genes,discovering virulence genes of bacterial pathogens,characterization of metabolism regulatory genes and genetic improvements of bacteria.

Textbook is the embodiment of teaching content and teaching method.Stereoscopic teaching materials construction is the key of making good education reform and increasing teaching quality and one of the most important constructions in medical colleges and universities.Taking the features of physiology into consideration,this paper elaborated the contents of stereoscopic teaching materials and discussed some advantage of teaching material construction.