Objective To evaluate the osteoinductive activity of recombinant adenoviral vector carrying the human BMP-2 gene(AdBMP-2) and investigate the mechanism of bone formation induced by the bone morphogenetic protein 2(BMP-2).Methods AdBMP-2 infected rabbit bone messenchymal stem cells(BMSC) were cultivated in vitro.The expression of hBMP-2 was determined by in situ hybridization and immunohistochemical analysis,and ALP was determined by enzyme cytochemistry 7 d after infection.At 21th day,Alizarin red S staining was used to evaluate calcium-rich deposits by cells transfected in culture.30 ?L AdBMP-2 solution(2?10~(12)pfu?mL~(-1)) was injected into the muscle of the left hind limb of the nude rat,and 30 ?L Ad? gal solution(2?10~(12)pfu?mL~(-1)) was injected into the muscle of the right hind limb as control.Animals were sacrificed at 20th day following injection to investigate the bone formation histologically and the expression of BMP-2 in the specimens of the injection sites by immunohistochemistry and in situ hybridization method.Results The expressions of BMP-2 and ALP in the transduced BMSC were confirmed at 7 th day after infection.A deeply stained mineralized layer was evident at 21th day in transduced cells.In vivo experiment,BMP-2 gene therapy induced mesenchymal monocytes chemotaxis,proliferation, differentiation into chondrocytes,with subsequent endochondral bone formation.At the same time,hBMP-2 expression was observed in the chondrocytes,osteoblasts and mesenchymal monocytes.(Conclusion AdBMP-2) posseses the osteoinductive activity in vitro and in vivo.

Objective To evaluate the efficacy of living donor liver transplantation in the treatment of infants with end-stage liver diseases. Methods The clinical data of 33 infants who received living donor liver transplantation at the Renji Hospital of Shanghai Jiaotong University from October 2006 to September 2009 were retrospectively analyzed. The median age of the infants was 10.9 months, and the mean body weight was 8.2 kg.All of the grafts were left lateral lobes. Tacrolimus (or cyclosporine A) + steroid or tacrolimus (or cyclosporine A)+ steroid + mycophenolate mofeti] were applied to the infants to suppress the immune reaction. Operative techniques, perioperative management and results of follow-up were analyzed. Results The mean operation time,blood loss and blood transfusion of the donors were (384±108)minutes, (183±35) ml and O, and the three indexes of the recipients were (500± 103) minutes, (296±163) ml and (292 ± 159) ml , respectively. The cold preservation time of the grafts was (64 ±23)minutes, the mean weight of the grafts was (249 ±52)g, and the mean graft to recipient weight ratio was 2.1% ± 0.4%. All donors recovered smoothly and no complication occurred. Of the recipients, three were complicated with hepatic artery thrombosis, two with portal vein thrombosis,nine with biliary complications, 11 with infection, two with acute rejection and five infants died perioperatively.The one-year cumulative survival rate of the infants was 85% (28/33). Conclusions Infants with end-stage liver diseases could be treated by living donor liver transplantation. The development of surgical techniques and perioperative managements improves the success rate of operation and the long-term survival rate.

Objective To study the necessirity of endocrine treatment for thyroid adenoma after operation. Methods TSH receptors were determined in 100 patient's thyroid adenoma specimens with SP method. The continuous pathologic sections of the thyroid tissues around the tumor were examined to find out that if there was any small focus. The patients were divided into two groups radnomly: Group A, patients received thyroid hormone(TH) treatment after operation; Group B, the patients received no TH treatment after operation. Blood T 3, T 4 and TSH concentration were determined, and the residual thyroid was examined with 131 I scanning and ultrasunography peroidically after operation. Results TSH receptors were presented in all of the thyroid adenomas, and small focus presented in 8% of the patients. Blood T 3, T 4, TSH and residual thyroid were normal in all patients in group A. In group B, Blood T 3, T 4 were below the normal lever in 45(90%), TSH over normal lever in 41(82%),residual thyroid hyperplasia and enlargement were found in 48 patients(96%), and thyroid nodule or tumor in 33(66%). Conclusions TH should be taken in patients with thyroid adenoma after operation to prevent high TSH of serum and tumor replapse, because these patients have the characteristics of muttiple focuses of tumor and postoperative hypothyroidism.

Objective To compare the efficacy of lymph nodes(LNs) dissection between video-assisted thoracic surgery (VATS) and thoracotomy in the treatment of clinical stage Ⅰ lung cancer.Methods A comprehensive search of PubMed,Ovid Medline,EMBASE,Web of Science,ScienceDirect,the Cochrane Library,Scopus database and Google Scholar was performed to identify studies comparing VATS and thoracotomy in LNs dissection.The data was analyzed by RevMan 5.3 software and SPSS 18.0.Results After selection,23 articles met the inclusion criteria.2 316 patients were involved in VATS group and 3 346 patients were involved in Open group.Meta analysis showed that less total LNs(95％ CI:-1.64--0.60,P ＜ 0.0001),totalLNsstations(95％CI:-0.61--0.01,P=0.04) andN1 LNs(95％CI:-0.28--0.02,P=0.02)were dissected in VATS group.On the left side,more LNs were dissected in VATS group(95％ CI:0.51-3.22,P =0.007).The same number of mediastinal LNs (95％ CI:-0.74-0.15,P =0.20),mediastinal LNs stations (95％ CI:-0.20-0.14,P =0.76),right side LNs (95 ％ CI:-1.52-2.23,P =0.71) were harvested in both groups.Conclusion In the surgical treatment of clinical stage Ⅰ lung cancer,less total LNs,total LNs stations and N1 LNs were dissected in VATS group,while more left side LNs were harvested by VATS.The same number of mediastinal LNs,mediastinal LNs stations right side LNs were harvested in the two groups.This conclusion still needs to be further proved by more high-quality and large-scale RCTs.

Objective To investigate the relationship between mild cognitive impairment and quality of life in hemodialysis patients with diabetic nephropathy.Methods One hundred and twenty-five hemodialysis patients with diabetic nephropathy were selected in Affiliated Hospital of North China University of Science and Technology from December 2014 to December 2016,and were divided into two groups according to mild cognitive impairment,including 73 patients without mild cognitive impairment as control group,and 52 patients with mild cognitive impairment as observation group.Patients received Montreal cognitive assessment scale and kidney disease quality of life scale.Patients received clinical index detection.Results Montreal cognitive assessment scale(visual space and execution(3.0±0.7) points,naming(2.4±0.3) points,attention(4.3±0.7) points,language(2.1±0.4) points,abstraction(1.1±0.2) points,delayed recall(1.6±0.3) points,orientation(5.4±0.5) points) score,kidney disease quality of life scale(physical(70.3±3.5) points,physical constraints due to work and life(14.6±2.8) points,pain(56.4±7.1) points,general health(36.2±3.4) points,emotional status(51.3±2.6) points,social function(52.7±3.4) points,mental status(43.2±3.6) points,emotional constraints due to work and life(41.3±2.8) points,symptoms(73.6±2.1) points,work status(20.3±1.6) points,cognitive function(72.7±1.8) points,nephropathy effect(49.1±3.2) points,sexual function(53.2±4.0) points,burden of nephropathy(21.3±2.6) points,sleep quality(70.1±1.5) points,social quality(43.3±1.9) points,social support(71.2±2.3) points) score in observation group were lower than control group((4.4±0.8) points,(3.0±0.0) points,(5.4±0.5) points,(2.7±0.3) points,(1.8±0.4) points,(3.4±0.6) points,(6.0±0.0) points),((78.6±4.1) points,(25.7±3.6) points,(69.8±4.2) points,(41.0±2.7) points,(58.5±3.0) points,(61.2±3.8) points,(53.4±2.8) points,(46.5±2.4) points,(82.9±3.2) points,(24.2±2.7) points,(81.6±2.3) points,(65.3±4.0) points,(62.8±3.9) points,(35.7±2.8) points,(79.3±2.0) points,(59.7±2.4) points,(82.4±2.6) points)(t=7.667,5.502,5.558,5.857,9.364,14.250,4.112,4.038,10.603,5.321,4.326,4.403,4.613,5.361,4.262,4.315,4.923,4.224,6.265,4.804,6.712,4.316,6.787,4.573,all P<0.05).Conclusion Hemodialysis patients with diabetic nephropathy has mild cognitive impairment,while quality of life is low.

USB interface applied widely in recent years, the developing methods for it are improved day by day. To design USB interface using USB/UART bridge chip is easy and feasible for USB mini system. This paper takes FT8U232BM of FTDI Corporation as an example to introduce the design method above-mentioned.

BACKGROUND:During fracture healing, in addition to the need for appropriate biomechanical environment, the role of cytokines is also increasingly attracted attention.
OBJECTIVE:To study the effect of nerve growth factor and alpha-lipoic acid on fracture healing in rat models of femoral fracture.
METHODS:Sprague-Dawley rat models of femoral fracture were established. Seventy-two rats were randomly divided into three groups. In the control group, rats were intramuscularly injected with physiological saline. In the nerve growth factor group, rats were intramuscularly injected with nerve growth factor 200 ng/kg, once a day. In the combined therapy group, rats were intramuscularly injected with nerve growth factor 200 ng/kg and oral y taken alpha-lipoic acid 25 mg/kg, once a day. At 1, 2 and 3 weeks after administration, bony cal us volume was measured. Enzyme linked immunosorbent assay was used to measure serum bone morphogenetic protein-2 levels. Western blot assay was utilized to detect bone morphogenetic protein-2 protein expression at the broken end of fracture. Semi-quantitative RT-PCR was applied to examine vascular endothelial growth factor mRNA expression.
RESULTS AND CONCLUSION:(1) At 1 week after administration, no significant difference in bony cal us volume was detected among the three groups. Serum bone morphogenetic protein-2 level, bone morphogenetic protein-2 protein expression, and vascular endothelial growth factor mRNA expression were significantly higher in the nerve growth factor group and combined therapy group compared with the control group (P<0.05), but no significant difference was found between the two groups. (2) At 2 weeks after administration, the amount of cal us, serum bone morphogenetic protein-2 levels, bone morphogenetic protein-2 protein expression, and vascular endothelial growth factor mRNA levels were significantly higher in the nerve growth factor group and combined therapy group compared with the control group (P<0.05). Above expression levels were higher in the combined therapy group than in the nerve growth factor group (P<0.05). (3) At 3 weeks after administration, serum bone morphogenetic protein-2 levels, bone morphogenetic protein-2 protein expression, and vascular endothelial growth factor mRNA levels were significantly decreased in the nerve growth factor group. However, above expression levels were stil high in the combined therapy group, and significantly higher than in the nerve growth factor group (P<0.05). (4) These results indicate that nerve growth factor combined with alpha-lipoic acid had better effects on the fracture healing compared with the nerve growth factor alone.

ObjectiveTo determine the possible causes for functional delayed gastric emptying (FDGE) and its diagnosis and treatment. MethodsThe clinical data of 53 FDGE patients after subtotal gastrectomy from 1987 to 2001 were retrospectively analysed. ResultsAll the 53 patients were recovered and discharged. Among them, 11 were misdiagnosised as mechanical ileus and were reoperated on. ConclusionsThe main cause of FDGE may be the disturbance of gastrointestinal motility which may be caused by vegetative nerve injury during the operation. The main therapy is non-surgical treatment and reoperation should be avoided at the early stage.

Objective To investigate the value of the acupuncture with Medicinal herbs in the treatment of the intractable hiccup after severe craniocerebral injury. Methods Sixty patients diagnosed of intractable hiccup after severe craniocerebral injury were randomly recruited into a therapeutic group and a control group. The therapeutic group was treated with acupuncture and medicinal herbs, while the control group was treated with western medicine. The therapeutic course for both groups was one week. The efficacy was evaluated by observing the cure rate, improvement rate and non effective rate respectively. Results In the therapeutic group :23 patients were cured and the total effective rate was 96.67%;While in the control group: 12 patients were cured and the total effective rate was 70.00%. The effective rate of therapeutic group was obviously better than the control group. Conclusion Acupuncture with medicinal herbs in the treatment of the intractable hiccup after severe craniocerebral injury has good efficacy.

Objective: To evaluate the clinical value of 18F-FDG PET/CT in diagnosing the recurrence or metastasis of the postoperative patients with gastrointestinal malignant tumor. Methods: Sixty-eight postoperative patients with gastrointestinal malignant tumor were studied with 18F-FDG PET/CT, and serum CEA and CA19-9 were assayed. Results: Thirty-seven patients were found to be recurrent or metastatic. The sensitivity and specificity of PET/CT detection were 97.3% and 96.8%,and the positive rates of PET/CT combined with CEA and CA19-9 were 100% and 97.8%.Conclusion: PET/CT has a higher sensitivity and specificity than tumor marker detection in assessment of recurrence and metastasis.