Attenuated Salmonella can be used not only as live vaccines but also as vectors for exogenous genes. As vectors, attenuated bacteria can deliver genes directly to tumor tissues, leading to the expression of the cloned genes and induction of specific anti-tumor immunologic responses to inhibit tumor growth. Using attenuated Salmonella as a vector offers a new approach for vaccine development.

Background Central retinal vein occlusion (CRVO) causes macular edema.The treatment options are limited.There have been a series of randomized controlled trials (RCTs) to investigate the effectiveness of anti-vascular endothelial growth factor (VEGF),but the systematic review of the literature to assess the strength of evidence supporting the interventions is lack.Objective This study was to evaluate the effectiveness of anti-VEGF therapy for improving vision and reducing macular edema in patients with CRVO associated with macular edema.Methods A systematic review and Meta-analysis was performed.According to guidelines of Cochrane collaboration,the literature of RCTs for anti-VEGF therapy treating CRVO with macular edema was searched from Cochrane Library,Pubmed,Embase,Wanfang databases and conference documents without the limiting of language or date.The literature was screened independently by two searchers,and the methodology quality of the included papers was estimated.The proportion of patients with the best corrected visual acuity (BCVA) ≥ 15 ETDRS letters,the change ranges of BCVA (LogMAR) and central fovea thickness (CFT) were analyzed.The overall effect size was analyzed using Review Manager 5.1 in The Cochrane Collaboration as weighted mean difference (WSD).Fixed effect mode was used to evaluate and compare the treating effectiveness between the anti-VEGF group and sham treating group.Results Six RCTs were incorporated with 948 eyes and generated 3 comparisons in the study,including 5 multi-central studies and 1 single central study.Pegaptanib was administered in 1 study,and ranibizumab was used in 2 studied,bevacizumab in 1 study and VEGF Trap-Eye in 2 studies.The results demonstrated that anti-VEGF therapy resulted in more patients who gained 15 ETDRS letters or more during one-year duration (Z =8.43,P＜0.000 01) in the 6th month after intravitreous injection.BCVA logMAR was significantly improved in the anti-VEGF therapy group in comparison with sham treating group during the initial 6 months of trial (Z=28.27,P＜0.000 01) with the maximal difference in the 6th month.CFT value was significantly lower in the anti-VEGF therapy group than that of the sham treating group during the first 6 months (Z=35.38,P＜0.000 01) in the 3rd month.Topical adverse events occurred occasionally,including vitreous hemorrhage in 19 eyes,cataract in 16 eyes,endophthalmitis in 8 eyes and iris neovascularization in 2 eyes.No system adverse event was found after administration of the drugs.Conclusions Anti-VEGF therapy is efficient in CRVO with macular edema with little side effect.However,in order to maintain the effect,multiple injections are needed.Early onset treatment of anti-VEGF drugs is recommended,but the delayed onset is still beneficial.

Diabetic retinopathy (DR) is one of the microvascular complications of diabetes mellitus (DM).Like other macrovascular complications of DM,the development and progression of DR is influenced by a variety of systemic and local factors.It is essential to understand the importance of multidisciplinary collaboration.Systemic risk fators such as hyperglycemia,hypertension,dyslipidemia and diabetic nephropathy should be treated before effective DR management can be implemented.Through multidisciplinary collaboration,we can prevent the development of DR,slow the progression of DR,and improve the safety of perioperative care.Thereby enhancing the level of prevention and control of DM complications,including DR.

Objective To evaluate the efficiency of control measures of the noise from a boiler room. Methods The main noise sourcs of the boiler room for attendant apartment near Wuhu railway station including air-blower and water pump were isolated using sound absorptive materials,a kind of modified PVC as sound isulator.The noise levels of the operation table for boiler workers and rooms of attendant apartment were measured before and after adopting noise control measures,then were evaluated based on GB12348-1990,the Criteria for Evaluation on the Noise of Industrial Enterprises. Results The equivalent sound levels of day and night were 76.1 and 73.5 dB(A) for the operation table for boiler workers,68.4 and 54.6 dB(A) for rooms of attendant apartment before and after noise control. The noise levels of above two monitoring points met the requirement of GB12348-1990 after the noise control. Conclusion The modified PVC sound insulator could effectively screen the noise from the boiler room.

Objective: To study the protective effect of anti-tumor necrosis factor-?antibody (TNF-? Ab) on lung injury after cardiopulmonary bypass(CPB). Methods: 20 patients with valve diseases underwent valve replacement under CPB. The patients were randomly divided into two groups: control group and TNF-? Ab group. In the TNF-? Ab group, human TNF-? Ab was dropped into the intracheal tube before operation and just after releasing the aortic clamp, respectively. Lung dynamic compliance, blood neutrophils count and TNF-? from the right and left atrium were determined perioperatively. Results: The dynamic compliance of the lung in TNF-? Ab group was higher than that in control group. TNF-? Ab can reduce releasing of TNF-? and restrain leukocyte accumulation in the lung. Conclusion: TNF-? Ab has markedly protective effect on lung injury after CPB.

Objective To design and produce a kind of NBC filtration and ventilation unit with the function of filtering biological aerosols and chemical poisonous gas and so on in the air,providing new clean air for the medical shelter.Methods The filtration unit and ventilation unit were united in principle of manipulability and repairability by modularization method.Results Structural dimensions and vibrational noises of the unit were reduced,and manipulability and repairability were improved.Conclusion The unit can meet the demands of biological and chemical protection for the medical shelters,and the structural design of fast fitting and so on can meet the requirements of fast responses.

Objective To explore the effects of telmisartan on expression of peroxisome proliferators PPARs activated receptors and adiponectin receptor 2 in rats with nonalcoholic steatohepatitis (NASH).Methods Forty male SD rats were randomized into normal-diet control group (NC,n=15),high fat-diet control group (FC,n=15),and high fat-diet with telmisartan group (FT,n =10).NC group was given standard diet and the other two groups were given high-fat diet.At the end of the 12th week,5 rats which were randomly selected from both the NC and FC groups were given euglycermic hyperinsulinemia clamp to see if fat-liver model of rats with insulin resistance was successfully induced,and rat livers were removed for pathological examination to determine the extents of NASH.Afterwards,rats in the FT group was given telmisartan (5 mg/kg·d) while rats in both the NC and FC groups were given the same volume of 0.9% saline solution by intragastric gavage for another 4 weeks.After glucose infusion rates (GIRs) were obtained by the euglycermic hyperinsulinemia clamp technique at the end of the 16th week,all rats were sacrificed and the body weight was recorded,and serum lipids,aminotransferases and fasting blood glucose were measured.The mRNA expressions of peroxisome proliferator activated receptors (PPARs),adiponectin receptor-2 and angiotensin II type-1 receptor in the liver tissue were assessed by semi-quantitative reverse transcriptase polymerase chain reactions.Results The expressions of PPARα,PPARγ and AdipoR2 mRNA in the liver tissue of FC group were decreased significantly compared with the NC group (P<0.01),and the expression of AT1R mRNA of the liver tissue in FC group was increased significantly compared with NC group (P<0.01).Compared with the FC group,the expressions of PPARα,PPARγ and AdipoR2 mRNA in the FT group were increased (P<0.01).Serum aminotransferases,lipids and fasting blood glucose level in the rats of FC group were increased significantly compared with rats of the NC group (P<0.01),and serum aminotransferases,lipids and fasting blood glucose level in the rats of FT group were greatly improved compared with the FC group.Conclusions Telmisartan can improve glucose and lipid metabolism,stop weight gain,decrease liver index,and alleviate steatosis and inflammation of NASH rats by improving insulin resistance.Telmisartan may play an effective role in the protection of rat liver with NASH.

Solitary fibrous tumor (SFT) is a rare tumor originated from mesenchymal spindle cells. It is very rare to occur in the prostate. A 30-year-old male with dysuria was treated by transurethral holmium laser enucleation of the prostate. The postoperative pathological Results showed that solitary fibrous tumor.The urination symptoms of the patients were significantly improved.

Objective To explore the effect of the traumatic brain injury on the fracture healing and the related mechanism. Methods 64 12-week-old SD rats were randomly divided into 2 groups: The femoral fracture with a brain injury group and the femoral fracture group. The bone callus was obtained 1, 2, 3 and 4 week after operation respectively, and observed with the HE staining. The vascular endothelial growth factor (VEGF) and VEGF mRNA in the callus were detected with immunohistochemical staining and hybridization in situ. Results The formation and reforming of the callus in group with brain injury were ahead to only fracture. The percentages of the cells positive for VEGF and VEGF mRNA in the callus were more in group with brain injury than in pure fracture group at the same time point (P<0.05). Conclusion Traumatic brain injury can promote the healing of fracture, which is probably related to an increase in the expression of VEGF.

Objective　To clarify the correlation of alpha fetoprotein （AFP） half-life （T1／2） with relapse or／and metastasis of primary hepatocellular carcinoma （PHC） after treatment. Methods　Determination of AFP content in serum with two steps　double McAb sandwich ELISA.Calculation AFP　T1／2 of the sufferers treated with intervention and radiofrequency ablation （RFA） according to T1／2=0.3 dT／log（AFP1／AFP2）. Results　When AFP T1／2＞11.5 days， the sensitivity， specificity and accuracy of predicting the relapse or metastasis of PHC after treatment were 87.5％， 89.3％， 88.5％， respectively. Intervention group was 82.35％， 83.3％， 82.75％， respectively and RFA group was 93.3％， 93.75％， 93.5％， respectively. During 200 days，there　was　very　significant difference of AFP T1／2 （P＜0.001） between non-relapsed／ non-metastasized and relapsed， metastasized and died. Conclusions　AFP T1／2 　can be used as a predictive　index for relapse， metastasis of PHC after treatment. It is not only a reliable parameter for the later stage treatment， but also a useful index for the evaluation of effect.