Objective To study the clinical efficacy of island skin flap in the repair of skin and subcutaneous soft tissue defects caused by excision of malignant tumour in the skin. Methods Island skin flaps with the main artery and its penetrating branches were used to repair the skin and soft tissue defects in different sites after malignant tumour removal. A total of 5 cases were repaired, in which 2 cases were in the face, 2 in limb and one in wall of the chest. Results Among the 5 cases, one was repaired with island skin flaps with the main artery, and another 4 were repaired with island skin flaps with the penetrating arteries. Follow-up for one to 5 years showed that the appearance and function in the repaired sites were normal without blood flow disturbance and dysfunction of the island skin flap, and no recurrence of the tumors except one case. Conclusion The island skin flap with main artery, especially one with its penetrating branches, is a good option to repair the defect caused by removal of malignant tumors with high rate of success, better appearance and minor damage to the donor site.

In the application of Internet-based tendering system, some shortcomings have turned up. At the same time, countermeasures in four aspects that should be taken by medical organizations and suppliers are introduced to improve its features of convenience and efficiency.

Objective To investigate the stress response during cardiopulmonary bypass and the effects of propofol on it Methods Thirty one patients scheduled for valve replacement ,were divided randomly into propofol group (group A,n=16) and control group (group B, n=15) Anesthesia was induced with valium fentanyl vencuronium, was maintained with fentanyl enflurane vencuronium In group A propofol 6 8mg?kg -1 ?h -1 was infused intravenously during CPB MAP,venous plasma concentrations of epinephrine(E) ,norepinephrine(NE) and blood glucose were measured before CPB(T1),cooling to 33℃(T2) and 30℃(T3), stable hypothemia(T4), rewarming to 30℃(T5) and 33℃(T6),and 15 min after CPB(T7) respectively Results In rewarming period, NE and E levels in group B increased significantly (P0 05) The dose of sodium nitroprussid was lower in group A than that in group B, and the dose of dopamine was not different between both groups Conclusions The stress response increases in rewarming stage during CPB ,which can be suppressed by the continuous infusion at anesthetic dose of propofol

Objective: To study the extraction process of the total flavones of Pollen Typhae ( Typha angustifolia L.). Methods: The optimum extraction process was selected with the orthogonal design. The content of total flavones was determined by UV spectrophotometry. Results: The significant effects of alcohol concentration, extraction time and extraction times on the extraction of total flavones were discovered. Conclusion: The optimum extraction process was as follows: Pollen Typhae was extracted with 70% alcohol for 3 times, with the solvent volume 8, 6, 6 times amount and extraction time 60, 60, 30 minutes in turn.

Objective To evaluate the biocompatibility,immunology and physiologic features of encapsulated Newborn Porcine Islets(NPI) in the liver of the recipient dogs with type I diabetes.Methods Type I diabetic dogs were perfused with 400 000-600 000 encapsulated NPI(group A,n = 15)or unencapsulated NPI(group B,n = 15)through the hepatic artery without immunosuppressive treatment.Liver function and CD4/CD8 in the recipients were measured before and after the transplantation.The livers from all NPI recipient dogs were analyzed by histopathology 6 months after transplantation(Tx).Results Insulin dose administrated to group A was reduced gradually within one week after Tx,from 22 u before Tx to 5 u after Tx,exogenous insulin required for group B was decreased from 24 u to 10 u.However,2 to 3 weeks after Tx,the insulin dose given to group B returned to the original level before Tx.In contrast,the amount of insulin administrated to group A was continually reduced to 8 u.Moreover,CD4+ cells in the blood of group B recipients were higher than that before Tx,whereas no significant alteration of CD4+ cells and CD8+ cells in the blood of group A after Tx.All NPI recipient dogs demonstrated a normal function and structure of the liver after Tx.Conclusion Microcapsulated NPI has a good biocompatibility in recipients livers providing prolong-ation of xenograft survival,and correcting the hyperglycemia of diabetic canines.(J Intervent Radiol,2006,15: 607-610)

Objective To investigate the effects of sodium butyrate (SB) on fetal gastric epithelial cells (GECs) in vitro damaged by N-methyl-N’-nitro-N-nitrosoguanidine (MNNG). Methods The fetal gastric epithelial cells were isolated, cultured and identified. Then the cells of the second generation were cocultured with 10 -5 mol/L, 10 -6 mol/L, 10 -7 mol/L SB for 4 h, then added with 10 -5 mol/L MNNG culturing for another 24 h. After the treated cells were finally cultured in normal culture medium for 40 d, the unscheduled DNA synthesis (UDS), lipid peroxidation (LPO) and ras p21 were detected. The cells were only cultured with 10 -5 mol/L MNNG served as negative control and without MNNG or SB as normal control. Results The level of UDS, the contents of lipid peroxidation products and the concentrations of ras p21 in GECs treated with 10 -5 mol/L and 10 -6 mol/L SB decreased obviously, and had significant differences with that of GECs treated without SB. Conclusion SB can effectively prevent the damage of GECs induced from MNNG.

Objective To investigate the expression of p21ras and microvascular density (MVD) in pancreatic carcinoma and to identify their clinico-pathological significance. Methods Expressions of p21ras and MVD were immunohistochemically assessed in 48 cases of pancreatic carcinomas. Results The expression rate of p21ras in pancreatic carcinomas was 60.40%, the MVD was (22.207?5.815) and (18.053?5.502) respectively in the p21ras-positive group and p21ras-negative group (P

ObjectiveTo estimate the effect of azithromycin on lung function and transforming growth factor β1(TGF- β1) in patients with idiopathic pulmonary fibrosis (IPF). MethodsOne hundred and ten patients with IPF were divided into two groups by random digits table. Patients in azithromycin group(60cases) were treated by azithromycin tablets and thoee in placebo group ( 50 cases) were treated by placebo tablets, and they were observed for 12 weeks. Lung function was detected at beginning and after 6,12 weeks' treatment. TGF- β1 was tested by ELISA, meanwhile patient's condition was observed. ResultsAfter 6 and 12 weeks' treatment, the forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC), carbonmonoxide diffusion capacity (DLCO) in the two groups had no significant differences compared with those at beginning of treatment (P ＞ 0.05). After 12 weeks' treatment, the level of TGF- β1 in azithromycin group was significantly decreased compared with that at beginning and after 6 weeks' treatment (P ＜ 0.05) ,but there was no significant difference in placebo group (P ＞ 0.05). The ratio of acute exacerbation admission and infection was 8.3％(5/60) and 60.0％(3/5) in azithromycin group, 22.0％( 11/50) and 81.8％(9/11 ) in placebo group,and there were significant differences between the two groups(P ＜0.05 or ＜0.01). Conclusion Azithromycin may reduce the ratio of acute exacerbation admission and infection, decrease TGF- β 1 expression in patients with IPF by taking orally for a long time, but it may have no obvious effect on lung function.

Objective To observe the inhibitation and radiosensitization effect of hematoporphyrin and radiotherapy on H22 liver cancer mice.Methods Mice models of liver cancer were established by subcutaneous injection of H22 cells,tumor-bearing mice were randomly divided into:control group, simple radiotherapy group, small dose hematoporphyrin with radiotherapy group (combined treatment group Ⅰ), middle dose hematoporphyrin with radiotherapy group(combined treatment group Ⅱ),and high dose hematoporphyrin with radiotherapy group (combined treatment group Ⅲ).Tumor volumes,inhibition rate,sensitizing factor,the survival time of mice,pathology,apoptosis and other indicators in five groups were observed after14 days. Results Hematoporphyrin and radiotherapy can inhibit tumor growth in mice,The q values in three combined treatment groups were all above 1.0 at different time points ,and combined treatment groupⅢwas the highest.The three combined treatment groups had higher apoptosis rate than control group and simple radiotherapy group,but the difference within groups were not statistically significant. The survival time in three combined treatment groups were higher than control group,the combined treatment group Ⅱ was the longest and simple radiotherapy group was the shortest.Conclusion Hematoporphyrin has tumor inhibitition and radiation sensitizing effect on H22 liver cancer mice,and the effect was positive correlation with drug dose. Hematoporphyrin combined with radiotherapy can extend the lifespan of mice in H22 liver cancer,its sensitizing mechanism may be association with induction of H22 cell apoptosis.