ObjectiveTo evaluate the effectiveness of the interventional treatment for portal vein stenosis in patients who had undergone liver transplantation.MethodsFromApr.2004 to Oct.2011,30 patients with portal vein stenosis after liver transplantation were referred for angiographic analysis and interventional treatment. All patients had typical clinical signs and symptoms or surveillance by imaging.After percutaneous transhepatic portography and balloon angioplasty,stents were deployed.Embolization was performed on patients with varices or portal vein flow changes.The therapeutic results were monitored by the follow-up on clinical symptoms,laboratory tests and imaging examinations.ResultsAngiography was performed successfully on all patients.Twenty-four patients received balloon dilation and 26 stents were deployed subsequently.The guide-wire cannot pass through the lesion of portal trunk in 1patient.Four patients received balloon angioplasty only.The technical success rate was 96.7％ (29/30).Stainless steel coils were applied in 7 patients for varices embolization.The complication related to interventional treatment was bleeding in thoracic cavity which happened in 2 patients.Portal vein patency was maintained in all the patients who received interventional treatment for 1-72 months (mean 21.5 months).No re-stenosis was identified.ConclusionInterventional therapy is an effective method for the treatment of portal vein stenosis after liver transplantation and excellent patency can be achieved by this method.

A highly sensitive and selective method for specific DNA sequence detection is developed using a non-labeled molecular beacon (MB) and a nucleic acid dye Hoechst 33258. It is demonstrated by a specific DNA sequence of wild-type HBV as a model system. In this strategy, the stem of MB is completely designed as C/G base pairs. In the absence of target DNA, the interaction between Hoechst 33258 and the MBs is very weak,and the fluorescence signals of Hoechst 33258 is very low. In the presence of target DNA, the MBs hybridize with the target DNA and form double-stranded structure. Hoechst 33258 binds to dsDNA, and the fluorescence intensity is significantly enhanced. Under the optimum conditions, the fluorescence intensity of Hoechst 33258 exhibits good linear dependence on target DNA concentration in the range of 2 × 10-10-2 × 10-8 mol/L. The fitted regression equation is △I=3. 3439C(10-10 mol/L) ﹢18. 6949(R2=0. 9982) with a correlation coefficient of 0. 9982 (R2), and the detection limit is 9 × 10-11 mol/L (3σ). The proposed method has good precision, simple operation, fast detection speed, low detection limit, high accuracy and high sensitivity.

OBJECTIVE:To probe into the status quo and problems of the prescriptions of rural clinics in a national level poverty-stricken county so as to provide reference for standardizing rural physicians' drug use behavior and facilitating a smooth development of new rural cooperative medical care.METHODS:A total of 962 prescriptions from June 2007 to June 2008 in rural clinics of a county in Chongqing municipality collected by sociological investigation were described and analyzed in respect of the structure of patients,diagnoses of diseases and drug use by descriptive statistical method.RESULTS:The patients visiting rural clinics were mainly young adults and patients with common diseases;the use of Chinese traditional medicine was on the low side;the writing of some prescriptions were nonstandard;and abuse of antibiotics,hormones and injections were widespread.CONCLUSION:Prescription management and the training of rural physicians should be strengthened to promote the rational drug use in rural poverty-stricken area.

OBJECTIVE: To investigate the effects on the differentiation and maturation of rat osteoblast (ROB) by naringin and it's metabolite-naringenin. METHODS: Primary ROB were obtained from new born SD rat skull after dissected and digested many times by type II collagenase during sterile condition. Serial subcultivation were proceeded when cells covered 80% culture dish. Cell proliferation was detected by MTT, while the alkaline phosphatase (ALP) activity was adopted as osteogenic differentiation marker to screen the best concentration of naringin and naringenin. The secretion of osteocalcin, bone morphogenetic protein-2 (BMP-2), oes-teopontin(OPN) and collagen I, the bone mineralized nodulus, even the gene expression of bFGF, IGF-1, Runx-2, Osterix, OPG and RANKL all were compared among the naringin-supplemented group, naringenin-supplemented group and the control. RESULTS: Both naringin and naringenin can significantly improved ALP activity, the secretion of osteocalcin, BMP-2, OPN and collagen I, the bone mineralized nodulus also were raised. Besides, these two drugs also stimulated the expression of genes which related to the osteogenesis of ROB. However, naringenin is stronger than naringin in above markers significantly. CONCLUSION: The osteoprotective effects of naringenin is stronger than naringin at enhancing the osteogenic differentiation of ROB, suggesting that naringin can be administered via oral and its metabolites developed higher activity to prevent osteoporosis. These results may provide a guide for the new drug develop and dosage forms design during osteoporosis therapy.

The application of continuous quality improvement program in standardized residency training examination in the central Hospital of Shanghai Jiading was introduced to inquire into the way to improve the quality of standardized training of resident doctors. Through the steps of FOCUS-PDCA, we continuously improved the examination content and quality compliance training personnel, and developed the examination process including test, training, supervision, learning and using. After the implementation of the project, the percentage of the departments that meet the residency training examination requirements has been increased from 33.3%to 100%in our hospital. The percentage of the students that passed the licensed medical skills examination was 96.6%in that year. 100%of the students passed the graduation comprehen-sive examination. Year-end evaluation showed that the students' satisfaction degree to the teachers increased from 94.5%to 98.2%. Thus, through the implementation of CQI project, we achieved the goal of promoting teaching and promoting learning.

Objective +o evaluate percutaneous intervetional therapy for portal vein anastomotic occlusion after liver transplantation.Method From July 2005 to July 2013,13 patients (9 male and 4 female; aged 25-65 years) with portal vein occlsion underwent interventional therapy.All patients accepted the imaging examation and 8 patients had typical clinical signs of portal hypertension.Percutaneous hepatic balloon venoplasty and stent placement was performed,trans-catherter urokinase infusion for thrombolysis and embolization for collateral pathways performed if necessary.+echnical success rate,complication rate and clinical symptoms were analyzed.Follow-ups including clinical course,stent patency and potal vein thrombosis which evaluated by imaging were performed.Result +echnical success was achieved in l1of 13 patients (84.6％) and 15 stents were deployed.Seven patients with localized portal vein occulsion accepted balloon dilation and stents deployment,4 patients with long segment cculsion also accept trans-catherter urokinase infusion for thrombolysis and embolization for collateral pathways.Portal vein flow recovered in all 11 patients.Procedure related complication occurred in 2 patient with hemothorax.During the follow-up period of 4-42 months,the clinical signs of portal hypertension were not observed in all patients.Stent stenosis was found in one patient with ultrasound in 23 months,but stent patency was proved by the percutaneous portal angiography.Conclusion Interventional therapy is effective for portal vein occulsion after liver transplantation,comprehensive interventional therapy should be performed in long segment portal vein cculsion.

Objective To investigate the curative effect of percutaneous transhepatic cholangial drainage(PTCD) on patients with non-anastomotic stricture after liver transplantation when treated with endoscopic retrograde cholangio-pancreatography(ERCP) unsuccessfully.Method The clinical data of 29 patients with non-anastomotic biliary stricture after liver transplantation were retrospectively analyzed,who failed to respond to ERCP and underwent PTCD from January 2005 to December 2007.Result All patients were performed PTCD successfully including cholangiography in 141 cases,drainage tube replacement in 115 cases,and balloon dilation of bile duct stricture in 39cases.The intubation time ranged from 2 months to 65 months.The mean levels (x ± SD) of alanine aminotransferase,aspartate aminotransferase and total bilirubin were 68.0 ± 29.1 U/L,52.6 ± 34.8 U/L,63.2 ± 33.3 μmol/L after treatment in comparison to 178.3 ± 63.3 U/L,144.0 ± 59.1 U/L,154.2 ± 92.0 μmol/L before treatment.Conclusion PTCD,which could improve the symptoms and prolong the survival time of both grafts and patients in spite of inconvenience of intubation,is suggested for patients with non-anastomotic biliary stricture if they are not suitable for liver retransplantation.

Objective To research the method of Chronic hepatic injury modeling in mice induced by D -galactosamine and lipopolysaccharide combination . Methods Injected D-galactosamine ( 30 mg/mL ) and lipopolysaccharide ( 2μg/mL ) combination by intraperitoneal injection , two days at a time for 8 weeks .Monitored variation of diet and weight; detected serum level of alanine aminotransferase ( ALT ) and aspartate aminotransferase (AST), been put to death in mice and removed the liver tissue .strained hepatic tissue by the HE and Masoon dye to observe Liver tissue structure and cellular morphology and the degree of fibrosis .Results Lipopolysaccharide and D-galactosamine combination resulted in ALT rise , hepatocyte degeneration and necrosis ,collagen fiber hyperplasia obviously . Conclusion D-galactosamine and Lipopolysaccharide combination could induce mice chronic hepatic injury modeling .

Objective To explore the biological basis of TCM syndromes from a biomolecules network perspective with qi deficiency syndrome as the breakthrough point. Methods A data dictionary of neuro-endocrine-immune (NEI) related genes and qi deficiency syndrome characterization terminology thesaurus were established. Literature about qi deficiency syndrome characterization was retrieved by using Genclip, to excavate the characteristic NEI gene, thereby to explore different bioactive substances of syndromes. Results The analysis of the genetic data, showed qi deficiency related cluster with the relevance of endocrine, signal transduction, hematopoietic cell and immune deficiencies etc. It is confirmed that the intrinsic biological features of TCM syndrome can effectively identify in the NEI level. Conclusion Literature mining method as a new way to discover syndromes biological indicators has certain feasibility, and it is recommended to be further expanded into other studies on syndromes to validate the universality and reliability of this method.

Objective To evaluate the diagnostic value of non-invasive imaging modalities to evaluate lower limb arterial disease associated with diabetes.Methods Two hundred and twenty seven patients (292 lower limb arteries) with lower limb arterial disease due to diabetes underwent both DSA and one of the pre-operative imaging modalities including CTA,CE-MRA and DUS were included in this study.The diagnostic consistency of CT angiography(CTA),contrast enhanced magnetic resonance angiography (CE-MRA) and Doppler ultrasonography(DUS) compared with DSA were calculated respectively.CTA was performed in 169 lower limb arteries,while 123 in CE-MRA and DUS in 192.DSA was used as the gold standard.Consistency analysis was performed to evaluate the three imaging modalities with lower limb artery classified as Grade 1,Grade 2 and Grade 3.Results The sensitivity of CTA to evaluate mild stenosis in Grade 1 to Grade 3 was 100％(56/56),97.6％(82/84) and 93.8％(30/32) respectively,while 100％(19/19),94.4％ (34/36)and 61.5％ (8/13) for severe stenosis.The diagnostic accuracy of mild and severe stenosis was 95.9％ (162/169) to 99.4％ (168/169),which showed good consistency with the result of DSA with Kappa value of 0.760 to 0.916,and P＜0.05.The sensitivity of CE-MRA to evaluate mild stenosis in Grade 1 to Grade 3 was 93.2％(68/73),97.2％(103/106) and 93.2％ (69/74)respectively,while 91.3％ (21/23),80.8％ (42/52)and 42.1％ (8/19)for severe stenosis.The diagnostic accuracy of mild and severe stenosis was 86.2％ (106/123) to 96.7％ (119/123),which showed good consistency with the result of DSA with Kappa value of 0.767 to 0.868 and P＜0.05.The sensitivity of DUS to evaluate mild stenosis in Grade 1 to Grade 3 was 89.9％ (62/69),88.8％ (87/98) and 79.2％ (42/53) respectively,while 73.1％ (19/26),84.8％ (39/46) and 44.4％ (8/18) for severe stenosis.The diagnostic accuracy of mild and severe stenosis was 89.7％ (174/194) to 93.8％ (182/194),which showed good consistency with the result of DSA with Kappa value of 0.476 to 0.864 and P＜0.05.Conclusions The non-invasive imaging modalities,namely CTA,CE-MRA and DUS all have good diagnostic consistency compared with DSA.CTA is superior to CE-MRA and DUS in evaluating the severe stenosis of lower limb arterial disease in diabetes patients.