Objective To explore the method of repairing foot soft tissue defects by using island skin flaps pedicled with sural nerves and vessels. Methods 24 patients with foot soft tissue defects were treated surgically. The defects were repaired with island skin flaps pedicled with ipsilateral sural nerves and vessels. Results Of all the 24 flaps, 21 flaps survived at the first intention. Partial necrosis appeared in 3 flaps but were cured at the second intention. The follow ups of 1 to 2 years showed that the appearance and function were satisfactory in all the cases except 4 in which the skin appeared swollen. Conclusion To repair foot soft tissue defects, this flap has the advantages of strong anti infection ability and good texture so that healing at the first intention and early functional recovery can be obtained.

Objective To explore the effect of oral mosapride on gastrointestinal transit time in elderly patients undergoing capsule endoscopy.Methods A total of 61 patients referred for capsule endoscopy during 2010 September to 2012 January were involved in this study.40 patients over 65 years old were prospectively randomized into mosapride citrate group (n=19) or non-mosapride citrate group (n=21).Patients under 65 years old were in control group (n=21).Mosapride citrate group took 10 mg mosapride citrate orally before endoscopy.The gastrointestinal transit time was calculated.Results Gastric emptying time and small intestinal transit time of patients over 65 years old were significantly shorter in mosapride citrate group than in non-mosapride citrate group [(48.6± 21.1) minand (64.3±22.4) min,t=2.274,P=0.029; (302.2±67.6) min vs.(347.14±51.18) min,t=2.384,P=0.022].There were on significant differences in gastric emptying time and small intestinal transit time between non-older group [(45.4 ± 28.4) min and (284.8 ± 78.3) min] and mosapride citrate group (t=0.407,P=0.686;t=0.751,P=0.457).There was a difference in the image score between medication group and no medication group (4.94±0.63 versus 4.50±0.68; t=2.137,P=0.039) in over 65 years old patients.Conclusions Mosapride may decreased the gastric emptying time and small intestinal transit time,improves the capsules endoscopy image quality and testing completion rate.

Objective To investigate the risk factors of dual anti-platelet treatment in upper gastrointestinal hemor-rhage after percutaneous coronary intervention (PCI). Methods Clinical data of 2004 PCI patients with dual anti-platelet treatment were collected,including gender,age,body mass index (BMI),history of drug therapy, history of digestive disease, history of smoking and drinking,history of hypertension,history of diabetes,history of cerebrovascular disease and history of combined treatment with a proton pump inhibitor (PPI). The different characteristics of gastrointestinal bleeding were com-pared. The risk factors of upper gastrointestinal bleeding were analyzed. Results The risk factors for PCI patients with up-per gastrointestinal bleeding were age>65 years of old, history of smoking, history of hypertension,abnormal platelet count, creatinine and hemoglobin. The combined treatment with a proton pump inhibitor was a protective factor associated with gas-trointestinal bleeding. Conclusion We should pay attention to the upper gastrointestinal bleeding induced by dual anti-platelet treatment, and take appropriate measures to reduce the incidence of gastrointestinal bleeding in PCI patients.

[Objective]To develop an ideal method for extracting type I collagen from cortical bone and to prepare a collagen-gelatin scaffold.[Method]The cortical bone was disintegrated into bone matrix powder in a high speed mill and was subsequently dehydrated in alcohol,decalcificated in hydrochloric acid and defatted in chloroform:methanol(1:1,v/v).The osscins were extracted using improved pepsin digestion method after the bone matrix powder was dissolved,centrifuged,dialyzed and lyophilized.Type I collagen was then characterized by SDS-PAGE and amino-acid composition analysis.The biomaterial was made of type I collagen and gelatin using freeze-drying method,and the alignment regularities of microscopic channels and their course directions were observed under the scanning electronic microscope.The size of the micropores and the factor of porosity were also measured.[Result] The collagen extracted was confirmed to be type I collagen by SDS-PAGE and amino-acid composition analysis.All the scaffolds looked like circular cylinder,the microscopic channels were arranged in parallel manners,and the pore sizes of the channels were uniform.[Conclusion]Ossein extracted from cortical bone is a real type I collagen that can be applied in the construction of collagen products.

Objective To evaluate the efficacy of free-radical scavenger in the treatment of chronic prostatitis (CP). Methods 117 patients with CP were randomly divided into 4 groups: group A (32 patients) were treated with free-radical scavenger, group B (32 patients) with antibiotics, group C (32 patients) with ?-blocker and group D with placebo. Microscopic examination,bacterial culture,SOD and MDA examination were conducted just before and after the procedure. Results No cure was observed in each group.18 patients were improved in group A,15 in group B,21 in group C and 2 in group D. The efficacy rate was 47.3%,46.8%,65.6% and 13.3% respectively. Compared to the placebo group, the free-radical scavenger had a significant therapeutic efficacy and had no significant difference to the antibiotic group and ?-blocker group. Conclusions The free-radical scavenger may be a useful method for the treatment of chronic prostatitis.

Objective To investigate a safe, highly efficient and rapid skin expansion method. Methods Syringe pump and pump control of automatic (PCA) replacemented normal affusion were used with shorter and vertical skin professional jargon for continuous and constant pressure skin expansion. Twenty cases (23 expanders) were carried out in this way. Results The maximum area of defect was 16 cm?20 cm, and the minimum area of defect was 3 cm?3 cm. The expanders were used for 18 days and the volume of expanders were 40-900 ml . It was more rapidly than normal affusion. There were no more complications except a case of expander leakage, and others expressed their satifactions Conclusion This modification of the skin expansion is a safe, comfortable, convenient to carry with. It is worth recommendation.

Objective To discuss the effects of health management model on mental health of undergraduates. Methods A total of 2244 freshmen from a college were randomly assigned to the study group (n =824) and the control group (n = 1420) in 2009. Chinese College Students Mental Health Scale (CCSMHS) was used to investigate the changes of the participants in the study group after receiving the health management and analyze psychological differences between 2 groups. Results In CCSMHS,all P was found to be less than 0. 05, except for anxiety ( t = 1.90, P = 0. 058 ), reliance ( t = 1.27, P = 0. 206), and impulse (t = -0. 60, P = 0. 551 ). In 8 dimensionalities with significant differences, scores were decreased after health management when compared with baselines. Instead of body ( t = - 1.38, P = 0. 168 ), all the other scores showed statistically significant differences between the 2 groups. Conclusion Mental health of those who received health management was better than those who didn't. However, anxiety, reliant, and impulse did not improve as a result of shorter intervention time, and the challenge facing psychology intervenion.

Objective To study the state, feature and risk factors of bacterial infection in patients with liver cirrhosis, find out the influence of infection on prognosis, and provide scientific basis for its prevention and treatment. Methods Three hundred and twenty-three patients with liver cirrhosis were analyzed. The number of the patients with infection, the location of infection, clinical feature as well as the kind of pathogenic bacteria were analyzed. Unconditional Logistic regression analysis was used to assess the risk factors of bacterial infection. Results The overall infection rate was 39.94% (129/323),of which community acquired infection rate and nosocomial infection rate were 22.60% (73/323) and 17.34%(56/323) respectively. The most common location of infection in turn were respiratory tract,gastrointestinal tract, urinary tract,biliary tract and abdominal cavity. The main pathogenic bacteria was Gram-negative bacillus, most of which had drug resistance for cefquinome and quinolones. The risk factors related with bacterial infection included liver cancer, Child-Pugh class B and C grade of liver function, gastrointestinal tract bleeding, diabetes mellitus,invasive operations and the length of staying in hospital. Conclusions The incidence rate of infection in patients with liver cirrhosis is higher. Multiple factors are likely to affect the incidence rate of infection in patients with liver cirrhosis.

Objective To explore the mechanism of siRNA targeted hTERT gene to inhibit bladder cancer T24 cell growth by decreasing c-myc and TGF-?1 expression. Methods shRNA-hTERT-pTZU6+1 vectors were constructed by RNAi-DNA vector technique, then the vectors were transfected into bladder cancer T24 cells,and the most effective vector and its optimal concentration were screened using RT-PCR to detect hTERT expression in T24 cells.The T24 cell growth, the alternative of cell phase,the expression of hTERT,c-myc and TGF-?1 were detected by flow cytometry,RT-PCR and immunohistochemistry. Results Three shRNA-hTERT-pTZU6+1 vectors were successfully constructed.The most effective vector was ph2-shRNA vector,and its optimal concentration was 1.0 ?g.This vector decreased the cell growth and the cell number of S phase from 65.2% to 38.6%,increased the cell number of G0/G1 phase from 32.0% to 57.9%,and attenuated both mRNA and protein expressions of hTERT,c-myc and TGF-?1 in T24 cells. Conclusions Targeted hTERT gene with siRNA may inhibit the cell proliferation of bladder cancer;down-regulating hTERT expression by attenuating the expression of c-myc and TGF-?1 is probably involved in the mechanism.

Objective To study the functions of GPⅠa/Ⅱa and GPⅣduring the course of platelet adhesion to collagen. Methods Reaction system which contains anti-GPⅠa/Ⅱa antibody ,anti-GPⅣantibody or no blocking antibody was analyzed by flow cytomety. PE labeled anti-CD42b antibody was used to select platelet and fluorescence intension of fluorescein isothiocyanate ( FITC) was detected during the course of platelet adhesion to FITC-labeled collagen. Results The antibody against GPⅠa/Ⅱa inhibited platelet adhesion to collagen, especially to activated platelet(P 0. 05 ). Conclusion GPⅠa/Ⅱa plays an important roles in platelet adhesion to collagen. Blocking GPⅠa/Ⅱa may decrease the adhesion. GPⅣmay be helpful for acceleration of platelet adhesion to collagen at early stage.