BACKGROUND: Conventional endovascular stent-graft exclusion for Debakey Ⅲ type aortic dissection is complicated and the complication rates are relatively high. Moreover, their operating techniques have increased the risk of rupture of laminated break. OBJECTIVE: To evaluate the efficacy and safety of improved endovascular stent-graft exclusion for Debakey Ⅲ type aortic dissection by the innovative methods of interventional therapy. DESIGN, TIME AND SETTING: A retrospective case analysis. Cases were selected from Department of Cardiology, Affiliated Hospital of Gannan Medical College between October 2006 and March 2009. PARTICIPANTS: A total of 30 male patients with Debakey Ⅲ type aortic dissection were selected from Department of Cardiology, Affiliated Hospital of Gannan Medical College, aged 43-70(53.5±12.8) years. The time of onset was 5-45 days. METHODS: All patients underwent improved endovascular stent-graft exclusion for Debakey Ⅲ type aortic dissection by the innovative methods of intervsntional therapy. Fine wire bundled endovascular stent-graft were implanted by the innovative transmission and delivery methods in all patients, of which branch stent were implanted when the distance from the break of descending aorta to left subclavian artery was less than 10 mm. MAIN OUTCOME MEASURES: After the success of operation, aortic angiography was performed to detect stent-graft position, shape, break closure, internal leakage, and patency of the aortic arch branches. The situation of post-operative complications were observed. All cases were followed up by MRI to understand the complications such as aneurysm rupture, internal leakage and stent migration. RESULTS: A total of 33 fine wire bundled endovascular stent-graft were successfully implanted in 30 patients, including 4 branch stents. After the operation, 5 patients were verified endoleak, 3 of them were resolved by repeated stent distension and 2 were treated by implantation of another stent. Three months after the operation, 1 patient showed new rupture at the distal stent and then was successfully implanted a new stent. Three cases showed numbness of right lower extremity and 1 case showed intermittent claudication. In follow-up of 3-32 months, MRI scanning showed the reduction of the false cavity with the formation of intraluminal thrombus, the enlargement of true cavity, and no complications such as tumor rupture, internal leakage or stent displacement were found. CONCLUSION: Fine wire bundled endovascular stent-graft and the innovative methods of interventional therapy for endovascular thoracic aorta repair is an effective, less invasive and safe surgery with fast postoperative recovery, high success rate and few complications for patients with Debakey Ⅲ type aortic dissection, especially for high-risk patients.

Objective To compare the efficacy of balloon dilation and YAG laser endouretertomy in treatment of secondary ureteric stricture . Methods 32 patients with secondary ureteral stricture were randomly divided into balloon dilatation group and holmium laser cut group, 16 cases in each, respectively. The two kinds of treatment efficacy was compared after two years postoperative follow-up. Results The clinical results of the two groups showed no statistical differences at the third, sixth and twelfth month follow-up (P > 0.05), and there were no statistical differences in the overall effective rates (P > 0.05). The clinical results of the two groups showed no statistical difference at the twenty-fourth month follow-up (P < 0.05), and the overall effective rates had statistical difference (P < 0.05). Conclusions Balloon dilation and YAG laser endouretertomy in treatment of secondary ureteral stricture have the same short-term clinical effects. But the middle-term efficacy of YAG laser endouretertomy is superior to that of balloon dilation.

Objective To investigate the nerve recanalization and the motor function of hind legs after transplantation of BDNF genetically modified neural stem cells(NSCs) at spinal cord injury site in rat. Methods After L4 spinal cord transection of rat, BDNF genetically modified NSCs were transplanted immediately. Retrograde HRP tracing through sciatic nerve were practiced at 1 week, 1 month, 2 month, 3 month after transplantation of BDNF genetically modified NSCs. The morphological changes were observed at section of spinal cord and the motor functions of both hind legs of rat were detected. Results The morphology of the injured spinal cord sections turned better. Retrograde HRP tracing through sciatic nerve showed some HRP positive neurons and nerve fibers at the site of near rostral end of the nearly injured part at one month after transplantation and increased with the time going by. Motor function of hind legs of rats recovered significantly in all transplantation groups. Conclusion BDNF genetically modified NSCs have repairing effect on spinal cord injury in rat.

Objective To observe the changes of the gene expressions at spinal cord injury site of rat after transplantation of BDNF genetically modified neural stem cells(NSCs) so as to provide basic data for the repair of spinal cord injury. Methods The Wistar rats were randomly divided into 4 groups: control group, operation group, NSCs transplantation group, BDNF NSCs transplantation group. Four time points(7 day, 1 month, 2 month, 3 month) were divided for each group. The expressions of ? galactosidase and BDNF, GFAP, NF 200 at the site of spinal cord injury were observed by cell transplantation, X gal histochemistry, immunocytochemistry, in situ hybridization, etc. Results After transplantation of BDNF genetically modified NSCs, some X gal positive cells were found at the sections of spinal cord injury. The expressions of BDNF were strong, especially at 1 week and 1 month post transplantation in transplantation group. The GFAP and NF 200 positive cells were also found at each time point in each group. Conclusion BDNF genetically modified NSCs can survive at the site of spinal cord injury and can strongly express BDNF, suggesting that BDNF genetically modified NSCs can be used as the material for the repair of spinal cord injury.

In this study gloxylic acid-induced fluorescent histochemical method was usedto reveal the innervation of adrenergic nerves,acetycholinesterase (AChE) methodto show the cholinergic nerves,and the immunohistochemical method to display thevasoactive intestinal peptide (VIP) and neuropeptide Y (NPY) immunoreactivenerves.This observation on the vas deferens showed that the VIP-immunoreactivenerves had the same distribution as the cholinergic nerves,and mainly existed inlamina propria,while NPY-immunoreactive nerves had the same distribution asadrenergic nerves and mainly existed in the muscular layer.One group of animalswas treated by intraperitoneal injections of 6-OHDA on the lst,2nd,6th and 7thday,and killed on the 8th day.Following treatment with 6-OHDA,significantevanescence of most adrenergic nerves was observed.NPY-immunoreactive nervesreduced remarkably and the extent of the decrease was similiar to that of adrenergicnerves,whereas no change was observed on the VIP and cholinergic nerves.Theimmunoelectronic microscopy (PAP pre-embedding method) demonstrated that VIPimmunoreactive complex deposited in the varicosity containing small clear vesicles(diameter of 40-55nm).Some varicosities also contained small number of largegranular vesicles with the diameter of 100-144mm.NPY immunoreactive complexdeposited in the large granular vesicles,and occasionally can be observed in thesmall granular vesicles,40-55nm in diameter.The results from this study suggestthat VIP probably co-exist with ACh and NPY with noradrenalin in rat vasdeferens.

Objective To establish a method of reverse hybridization to detect five subfamilies of low risk Human Papillomaviruses(HPV6,11,42,43 and 44)and eighteen subfamilies of high risk HPV (HPV16,18,31,33,35,39,45,51,52,53,56,58,59,66,68,73,83 and MM4)in one reaction.Methods Special probes for twenty-three HPV subfamilies were fixed on nylon membrane bars,biotin labeled general primers mediated polymerase chain reaction(GP-PCR)were applied in HPV DNA amplification.PCR amplified DNA fragments were reversely hybridized with special probes that were fixed on the membranes. All samples(136)detected by reverse hybridization method were paralleled with the methods of Hybridization Capture Ⅱ(HC-Ⅱ)and sequencing.Results Positive rate of the 136 samples detected by reverse hybridization was 41.9%,while HC-Ⅱ 42.6% and sequencing 40.4%.Reverse hybridization detection indicated coherence with the other two methods(Kappa 0.8644 and 0.9089,respectively).While sequencing was lab standard for DNA test,the sensitivity was 96.36%,specificity was 95.06%,accuracy was 95.59%.Conclusions Method of reverse hybridization is adaptable to 23 kinds of HPV subfamilies, which can confirm the exactly subfamilies of HPV infection.This method is adaptable in clinical detection of HPV,with high sensitivity,high specificity,simply and convenient operation and the results are easily to be read.

By using the histochemical method, the electron microscopy and biochemical measurement, this study deals with the changes of the innervation of the uterus in tats induced by pregnancy. The results revealed that the adrenergic and cholinergic innervation of the uterus were reduced in advanced pregnancy. The content of noradrenaline(NE), expressed as ng/per gram wet weight was 194.79?2.85 in the control group and 78.56?0.48 in the late pregnancy group (P

OBJECTIVE To know more clearly about the situation of Hepatitis B virus markers in clinical medical workers and take further interventional strategies to protect high risk medical workers.METHODS Hepatitis B virus markers in doctors,nurses and medical checkers who have contacted with patients′ blood,body fluid,or other occupational hazard situation,were detected by of ELISA.RESULTS Among the 587 medical workers detected,311 were with deficiency of active immunity(52.98%),196 were HBV infectors(33.39%).CONCLUSIONS Medical workers are in high risk groups of HBV infection.Medical institutions should attend to their self-protection and encourage them to take HBV vaccine to prevent iatrogenic transmission.

OBJECTIVE:To systematically review the efficacy and safety of the generic and original preparation of atorvas-tatin,and provide evidence-based reference for clinical treatment. METHODS:Retrieved from PubMed,EMBase,Cochrane Li-brary,CJFD,Wanfang Database,VIP and CBM,related randomized controlled trials(RCT)about generic preparation of atorvas-tatin(test group)versus original preparation of atorvastatin(control group)were collected. Meta-analysis was performed by using Rev Man 5.3 software after data extract and quality evaluation. RESULTS:Totally 16 RCTs were included,involving 2 077 pa-tients. Results of Meta-analysis showed,compared with control group,there were no significant differences in reducing total choles-terol (TC) [MD=-0.06,95%CI(-0.14,0.01),P=0.11],triglyceride (TG) [MD=-0.00,95%CI(-0.08,0.08),P=0.99], low-density lipoprotein cholesterol (LDL-C) [MD=-0.07,95%CI(-0.16,0.01),P=0.09],increasing high-density lipoprotein cholesterol(HDL-C)[MD=-0.00,95% CI(-0.03,0.03),P=0.96] and the incidence of major adverse cardiac events(MACE) [OR=1.18,95%CI(0.71,1.97),P=0.52] in test group;in terms of safety,compared with control group,there were no significant differences in the resulting in alanine aminotransferase (ALT) increased [OR=1.08,95%CI(0.51,2.30),P=0.83],the incidences of myalgia [OR=2.46,95%CI(0.70,8.65),P=0.16] and gastrointestinal adverse reactions [OR=1.11,95%CI(0.64,1.95),P=0.71]. CONCLUSIONS:Both the generic and original preparation of atorvastatin can effectively reduce blood lipid levels,with sim-ilar safety.

Objectives To investigate the expression of 8-Hydroxy-2'-deoxyguanine(8-oxodG)in white blood cell,plasma and urine of rhesus monkey of different age group.Methods 30 female rhesus macaques at different age(1y,5y,10y,15y,20y,25y)were selected and grouped(n=5,each).10 mL of morning urine and 5 mL of fasting venous blood were collected.The level of 8-oxodG expression in plasma,leukocyte and urine was measured by high-performance liquid chromatography-mass spectrometry(HPLC-MS) method.Results The level of 8-oxodG in leukocytes,plasma and urine was increased along with aging.The level of 8-oxodG was 1.8,1.6 and 1.4 times higher in 25 year group than in 1 year group in plasma,white blood cell and urine,respectively(P＜0.05).The 8-oxodG level was more than 40 times higher in urine than in plasma.Conclusions The expression level of 8-oxodG is increased along with aging.It may be one of the experimental evidence of the aging markers.