Objective To investigate the expression of hypoxia inducible factor-1?and VEGF in lung of mice during hypoxia and its relationship with angiogenesis.Methods The mice were divided into two group(hypoxia group and control group).The hypoxia group mice were placed in a hypoxia chamber with 10%,7%,or 5%O2 respectively for 3,6,9 days.Immuno- histochemical staining technique was used to examine HIF-1?,VEGF and MVD.The p rotein expression of HIF-1? and VEGF were observed by Western blot.Results HIF-1?proteins didn't express and VEGF proteins expressed weakly in control group mice;Compared with the controls,the expression of HIF-1?and VEGF increased dramadically.There were significant differences between the hypoxia groups and the control group;Positive relationships were found between the expression of HIF-1?,VEGF and MVD.Conclusion HIF-1?/VEGF pathway may play an important role in angiogenesis of hypoxia in the lung of mice.

Objective To observe the effects of renin - angiotensin system ( RAS ) and steroid hormones onpregnancy in in vitro fertilization and embryo transfer(IVF-ET). Methods .53 tubal infertility women underwent IV F-ET under control of ovarian hyperstimulation with GnRHa/FSH/hMG/hCG. Plasma total renin, serum estradiol(E2),progesterone(P) and testosterone(T) were measured on the day of injection of injection of hCG and 36h after hCG( before getting the oocytes). ResultsPlasma total renin level on the day of hCG in pregnant group was higher than that in nonpregnant group(P<0.05), E2 and P lower than that in nonpregnant group(P<0.05, P<0.01). Plasma total renin and E2 levels 36h after hCG in pregnant group were lower than that in nonpregnant group( P<0.05). There was no difference in other hormones between the two groups. ConclusionThe high concentration of total renin on the day of hCG injection and its low concentration 36h after hCG administration are probably conducive to pregnancy.

Objective To evaluate surgical indications and method for regional pancreatoduodenectomy combined with blood vessel reconstruction. Methods Forty-four patients underwent pancreatoduodenectomy combined with superior mesenteric vein and portal vein(smv-pv) resection and reconstruction between April 1994 and March 2001.Among them superior mesenteric artery (SMA) and hepatic artery (HA) were reconstructed in 4 and 2 cases, respectively. Partial resection of the anterior wall of the inferior vena cava was performed in one case for tumor invasion. Results The overall mortality was 7.1%,with no complications. The resected endothelium or margins of the blood vessel and pancreas were microscopically tumor free in all cases. Histological specimen examinations demonstrated adenocarcinoma of pancreas head in 43 cases, neuroendocrine adenocarcinoma was diagnosed in one case. Patients were followed-up from 3～87 months with 2 cases lost after PV/SMV for pancreatoduodectomy. Six patients have survived more than 5 yearsand 21 cases more than 3 years. Conclusion Regional pancreatoduodenectomy combined with reconstructionof blood vessel could increase tumor resection rate in properly selected patients and could be performed safely without increased morbidity and mortality.

Objective:To explore the immunogenicity and persistence of hepatitis B vaccine in HIV-infected patients with different CD4 +T cell (CD4) levels, and analyze the influence effect of CD4 levels on immunization response. Methods:A total of 182 HIV-infected patients who participated in a randomized controlled trial of 20 μg and 60 μg hepatitis B vaccination at month 0, 1, and 6 in 2014 by Guangxi Zhuang Atonomous Region CDC and Ningming county CDC were surveyed. Six months later after the first dose and 1 month, 6 months, 1 year, and 3 years later after the full course of the vaccination, 5 ml of the venous blood of the patients was collected, and the anti-HBs was detected by Chemiluminescent Microparticle Immunoassay (CMIA). On the basis of previous studies, this study focused on analyzing the immunogenicity and persistence of hepatitis B vaccine under different CD4 levels.Results:One month later after the whole course of hepatitis B vaccination, the anti-HBs geometric mean concentration (GMC), anti-HBs positive rate (≥10 mIU/ml) and strong positive rate (≥100 mIU/ml) in HIV patients with CD4 <350 cells/μl were 442.50 mIU/ml, 71.05% (27/38) and 44.74% (17/38), respectively, which were significantly lower than those HIV-infected patients with CD4 ≥350 cells/μl [583.90 mIU/ml, 92.13% (117/127) and 77.95% (99/127)] ( P<0.05). After controlling the confounding factors, the probability of being anti-HBs positive induced by hepatitis B vaccine in patients with CD4 <350 cells/μl was 0.14 times higher than in those with CD4≥350 cells/μl (95% CI: 0.03-0.62), and patients with CD4 <350 cells/μl had higher risk of no response. From 6 months to 3 years after the whole course of the vaccination, the anti-HBs GMC (195.00-27.55 mIU/ml vs. 300.10-45.81 mIU/ml), the positive rate (56.67%-36.67% vs. 78.57%- 51.58%) and the strong positive rate (33.33%-6.67% vs.44.64%-15.79%) in patients with CD4 <350 cells/μl gradually declined, lower than the levels in those with CD4 ≥350 cells/μl. Conclusions:HIV-infected patients with CD4 <350 cells/μl have high risk of no response to hepatitis B vaccination and poor immune persistence. It is necessary to strengthen the anti-HBs monitoring in HIV-infected patients, with special attention to those with CD4 <350 cells/μl. When anti-HBs is negative, hepatitis B vaccine should be injected as early as possible.