Objective To evaluate the therapeutic effect of mini-incision surgery for the treatment of varicose vein of lower extremities. Methods 106 limbs of 95 paitnets with varicose vein underwent saphenectomy combined with ligation of communicating veins by way of mini-incision from November 1997 to April 2001. The ascending venography and StethoDoppler examination were performed preoperatively in all of the patients. Results Venous reflux in deep vein of lower extremities were at grade 0 in 62 limbs, at grade Ⅰ in 28 limbs and at grade Ⅱ in 16 limbs demonstrated by ascending venography with Valsalva test. StethoDoppler examination showed that valve insufficiency of great saphenous vein at saphenofemoral junction was in 99 limbs, the insufficiency of small saphenous vein at saphenopopliteal in 5 limbs and incompetent perforating vein in all of the limbs. Postoperative course was uneventful, the average hospitalization days after operation were 2.8 days and no recurrent varicose veins occurred in all the patients during the follow-up period lasting 1-30 months. Conclusions With the help of preoperative StehoDoppler examination, the mini-incision surgery for the treatment of varicose vein of lower extremities is safe, simple, effective and lower costs.

The paper probed into corporate governance and the feasibility of introducing corporate governance into China' s public hospitals based on the principal-agent theory and successful experiences of overseas hospitals.It also described the incentive and restriction mechanism of such governance.The authors proposed such key factors as evolution in property right/shareholding relationship,organization structure of introducing corporate governance,appropriate supervision,sufficient competition,and perfecting corporate governance mechanism.

Objective To construct a recombinant Ientiviral vector of mFVII/Fc and investigate its transfective efficiency into human bone mesenchymal stem cells (hBMSCs),and to detect the expression of mFVII/Fc fusion gene in vitro. Methods Coagulation factor VII (FVII) was cloned in vitro,with a point mutation from Lys to Ala in the position of 341 in the gene level.The cDNA fragments of mutational FVII (mFVII) and those of IgG1Fc were fused together with DNA ligase.After digestion,integration and sequencing,the fusion DNA was identified and transfected human embryonic kidney 293T cell packaging for re-mFVII/Fc lentiviral vector.After successful identification of vectors,detect the Ientiviral titer determination,bulk transfer after the determination of best MOI value of the third generation of hBMSCs,obseve the GFP expression with fluorescence microscope,have relative quantitative analyse of mRNA and protein expression of mFVII/Fc with RT-PCR and ELISA at different time points. Results In contrast with GenBank ID: AF 272774,the fusion gene matches exactly except the synonymous mutation,and the titer of packaging lentivirus was 2×108 TU/ml.Analyzed by Flow cytometry, indentification results of hBMSCs were as follows,CD+29(98.08%),CD+44 (97.63%),CD+34(0.31%) and CD+45(0.58%),respectively.The transfection efficiency of hBMSCs after 72 hours was (84±3)%,and the hBMSCs with mFVII/FC transfcetion have a large number of mRNA transcription and protein expression levels. Conclusions In this experiment we obtained a stable genetic vector with hBMSCs fusion gene expression successfully,which lay a foundation for the tissue factor study of prostate cancer targeting therapy and cancer gene therapy research.

Objective To establish a spontaneous abortion rat model for a syndrome in traditional chinese medicine, kidney deficiency, and observe the changes of physiological indicators and related cytokine expression in the model. Methods 40 female and 20 male rats were used in this study. The female and male rats were mated (mating ratio 2:1). The day of vaginal smear with a large number of sperm was considered as the first day of pregnancy. The rats were randomly divided into control group and model group. The model group received 450 mg/kg hydroxyurea every day. Mifepristone was given on the eighth day in a dose of 3.75 mg/kg. The diet amount, the diameter index of kidney, ovary and embryos were analyzed. The mRNA expression of Th1/Th2 cytokine was detected by RT-PCR, and the expression of co-stimulating factors CD80, CD86, CD28, CTLA-4 were determined by flow cytometry.Results Comparing the model group with control group on the eighth day, there were significant differences between the model and control groups in quantity of food and water intake, and weight increase (P<0.05), and also in the embryonic diameter index, average of abortion rate, Th1/Th2 type cytokines, co-stimulating factor CD80, CD86, CD28, and CTLA-4 (P<0.05). Conclusion A rat model of spontaneous abortion due to kidney deficiency can be successfully established with hydroxyurea and mifepristone. The high expression of Th1 (TNF-α, IFN-γ) may cause abortion and be harmful to pregnancy. Th2 type (IL-4, IL-10) may facilitate pregnancy. The expression co-stimulating factor CD80, CD86, CD28, CTLA-4 may be relevant to the spontaneous abortion.

Objective To construct a 5-lipoxygenase (5-LO) transgenic mouse model of atherosclerosis.Methods Purified 5-LO fragment was injected into male pronucli and the firtilized eggs were transplanted into pseudopregnant mice.PCR and Southern blot were used to detect the genotype of DNA separated from the newborn mouse tail tissues.RT-PCR and Western blot analysis were used to detect the gene transcription and expression.Results PCR and Southern blot results showed that 7 of 25 mice were transgenic mice.Expression of 5-LO and FLAP was found in the bone marrow,spleen,kidney,and peritoneal cells.Results of RT-PCR and Western blot showed that No.9,20,24transgenic mice expressed a higher level of 5-LO and FLAP than those in the wild type C57BL/6 mice.The expression levels in bone marrow and peritoneal cells were significantly different(P<0.05).Conclusion A 5-LO transgenie mouse line has been established in this study and may be used for future study on the function of 5-LO gene.

Objective:To investigate the relationship between the levels of vascular endothelial growth factor (VEGF) and homocysteine (Hcy) in serum and diabetic retinopathy (DR) and diabetic nephropathy (DN).Methods:A total of 211 patients with type 2 diabetes mellitus (T2DM) who were treated in Beijing Tongren Hospital from February to July 2019 were selected as the case group, including 72 patients with T2DM (T2DM group), 45 patients with DR (DR group), 49 patients with DN (DN group), 45 patients with DR and DN (DR+DN group); 76 healthy people were selected as the control group. The levels of serum VEGF and Hcy were measured in all subjects. The course of diabetes, body mass index, waist to hip ratio, fasting blood glucose, glycosylated hemoglobin (HbA 1c), triglyceride(TG), total cholesterol(TC), low density lipoprotein-cholesterol(LDL-C), high density lipoprotein-cholesterol(HDL-C), urinary microalbumin/creatinine (ACR), urinary immunoglobulin G/creatinine (IGU/CR), urinary transferrin/creatinine (TRU/CR), urinary α1-microglobulin/creatinine (α1/CR), serum urea nitrogen, serum creatinine, hypersensitive C-reactive protein (hCRP) and erythrocyte sedimentation rate (ESR) were also observed in the case group. Results:The VEGF level of the T2DM group, DR group, DN group and DR+DN group was 90.02(61.24, 118.52), 124.38(81.50, 170.28), 133.19(78.84, 168.49), 124.08(79.82, 187.33)ng/ml respectively, which were significantly higher than that of the control group 50.31(21.10,67.74)ng/ml(all P<0.05); Compared with the T2DM group, the VEGF level in the DR group, DN group and DR+DN group increased significantly (all P<0.05). The level of Hcy in the DN group and DR+DN group [(12.58±3.66), (11.91±2.42) μmol/L, respectively] was higher than that in the control group [(10.44±2.09) μ mol/L], and the difference was statistically significant ( P<0.05). There was no statistically significant difference in VEGF and Hcy levels in different stages of DR ( U=264.00, t=-0.43, P>0.05). The Hcy level of DN patients in the group of massive proteinuria was higher than that in the group of microalbuminuria [(15.00±1.87) vs (11.79±3.76) μmol/L, t=-2.82, P=0.01].VEGF was positively correlated with ACR, TRU/CR and IGU/CR ( r=0.23, 0.19, 0.17, all P<0.05),while Hcy was positively correlated with serum urea nitrogen, serum creatinine, ACR, TRU/CR, IGU/CR and α 1/CR ( r=0.35, 0.44, 0.22, 0.19, 0.21, 0.29, all P<0.05). Conclusions:The level of VEGF in the serum of DR and DN patients increased, suggesting that VEGF may play a role in the development of DR and DN, but there was no significant difference in the level of VEGF in patients with different stages of DR and different urinary albumin excretion rate of DN.The level of serum Hcy in DN patients increased, and that was higher in massive proteinuria group, suggesting that serum Hcy may have clinical significance in the diagnosis and monitoring of DN.

OBJECTIVE To evaluate the safety and clinical efficacy of cefoperazone/sulbactam in the treatment of biliary tract infections.METHODS In this prospective multicenter study,159 hospitalized patients with biliary tract infections received cefoperazone/sulbactam,and the clinical and bacteriological efficacy as well as the side effects were evaluated.RESULTS The clinical effective rate of cefoperazone/sulbactam in the treatment of biliary tract infections was 86.78%.After treatment,the body temperature reduced to normal rapidly,the average time of defervescence was 3.09?1.81 days.Pathogen eradication rate was 85.71%.No adverse reactions were reported during the study period.CONCLUSIONS Cefoperazone/sulbactam can be used as one of antibiotics of choice in the initial empirical therapy for biliary tract infections.