Intravesical instillation after transurethral resection of bladder tumor (TURBT) has been considered as the most important and effective method for the prevention and treatment of non-muscle invasive bladder cancer (NMIBC).Nowadays, the main choices of intravesical instillation are chemical drugs and Bacillus Calmette-Guerin (BCG).For all pa-tients with NMIBC, intravesical instillation should be admistered as soon as possible after TURBT.For patients of G_(1-2)T, an immediate single postoperative instillation of chemotherapy as standard therapy for low-risk disease is enough.For interme-diate-risk patients, it is recommended to use an immediate single postoperative instillation of chemotherapy plus an induc-tion course or maintenance treatment, but the scheme of intravesical instillation should be based on the specific circum-stances of the patients.For high-risk patients, maintenance therapy with BCG should be the first chioce.The combination of intravesical BCG and chemotherapy has certain advantages in treating NMIBC, but its efficacy needs further verifica-tion.Although there is a long history of intravesical instillation after TURBT, the choice of drugs, the time of instillation, and the corresponding dosages are still inconclusive.This article summarizes the strategies of the treatment for NMIBC after TURBT.

BACKGROUND: Gene transfer to study the effect of a exogenous gene on cells is a commonly used technique for molecular biology. Compared with viral vector,pcDNA4.0-TGF-?1 eukaryotic expression plasmid transfection has no inherent toxicity or cytotoxicity,with high safety. OBJECTIVE: To construct and identify eukaryotic expression plasmid carrying recombined TGF-?1 by cloning transforming growth factor (TGF)-?1 gene. DESIGN,TIME AND SETTING: The in vitro cell experiment was performed at the Opening Laboratory of Key Clinical Medical Sciences,Henan Provincial High-learning School from March 2007 to February 2008. MATERIALS: Clean healthy Sprague Dawley rats aged 2 months,of both gender,were used for isolating RNA from cells. METHODS: The TGF-?1 mRNA was extracted from the rat bone marrow cells,and amplified by reverse transcription-polymerase chain reaction (RT-PCR),and cloned into the pGEM-T-vector and identified by PCR. Then TGF-?1 gene was subcloned into pcDNA4.0 plasmid vector. The inserting DNA sequences were analyzed. MAIN OUTCOME MEASURES: Expression of TGF-?1 cDNA,pGEM-T-TGF-?1 and recon pcDNA4.0-TGF-?1. RESULTS: There was an obvious electrophoresis strip of TGF-?1 cDNA by RT-PCR. The obtained pGEM-T-TGF-?1 was confirmed correct with PCR amplification and sequence identification. Recombinant eukaryotic expression plasmid pcDNA4.0-TGF-?1 was obtained and identified by digestion. The inserted sequences were conformity to the designed sequences. CONCLUSION: Rat TGF-?1 gene has been successfully cloned,and recombinant TGF-?1 eukaryotic expression vector has been constructed successfully.

Objective To assess clinic value of esophageal stent placement in the benign and malignant esophageal strictures,and the influence of stents selection on curative effect. Method 36 cases of esophageal strictures, 5 cases of benign strictures,31cases of malignant strictures,including 4 cases with esophagotracheal fistula and 3 cases with esophagomediastrinal fistula. 26 domestic Nickel-Titanium alloy memorial netlike stents and 14 membrane-covered stents were used for the treatment. All patients were treated by placing esophageal stent perorally under fluoroscopic guidance. Results 40 stents were planced successfully in 36 cases, only one case showed membrane covered stent migrating. Symptoms of dysphagia were considerably relieved after stent insertion. The total effective rate was 97.2%. Conclusion The esophageal stent is an effective and safe treatment for benign and malignant esophageal stenosis: The nutritive condition and the quality of life of patients are improved, which is favourable for tumor further treatment. Appropriate stent selection can keep esophageal patent rate and decrease sliding rate.

Objective To study the expression of ? 3 adrenoceptor (? 3 AR) and its function in human detrusor cells. Methods Cellular functional studies,radioligand binding experiments and reverse transcription polymerase chain reaction were used to determine the expression and its influence on detrusor contractions. Results mRNA of 3 subtypes of ? ARs was detected. Non selective ? AR agonists and ? 3 AR decreased the contractions of detrusor cells induced by KCL, but both agonist and antagonists of ? 1 and ? 2 AR could not influence the contraction;BRL37344 concentration dependently displaced dihydroalprenolol binding to the membrane of detrusor cells. Conclusions The mRNA of subtypes of ? ARs is distributed in human detrusor cells,but ? 3 ARs is the main receptor mediating detrusor relaxation.

Objective To evaluate the therapeutic results of expandable stent for treatment of atherosclerotic renovascular obstructive disease. Methods 15 patients (10 men and 5 women, 41～75 years old; mean age, 52 years) with renal arterial hypertension underwent renal stent agioplasty including renal arterial stenosis 89% (n=13) and fully obstruction without function in 2, of which 2 patients had bilateral involvement. The stenotic range of all arterial segments showed 60% to 90% width of the normal arterial diameter. 16 stents were implanted under the guidance of flouroscopy. The most of stents implanted were Palmaz (n=12, 75%) with regular clinial and angiographic follow up. Results Technical success (residual stenosis

Objective To observe the clinical value and the effect of interventional treatment on obstructive jaundice. Methods 24 patients with obstructive jaundice, including 21 cases of malignant biliary obstruction and 3 cases of chololithiasis post operative biliary stricture of bile duct, were treated after percutaneous transhepatic biliary moulding, 6 cases with percutaneous transhepatic cholangic drainage(PTCD), 18 cases with insertion of biliary stents, 13 net-type stents and 5 Z-type stents were used, according to the patient's state and financial condition. Results The total technical success rate was 100%. After 7～15 days of interventional treatment, the total serum bilirubin level declined from (454 93?64 52)?mol/L to (66 94?8 45)?mol/L, transaminase declined from (265 67?30 09)u/L to (56 21?8 73)u/L. There was very significantly difference (P

The paper proposed a new method to design and fabricate a flexible neural microelectrode arrays (MEA) for retinal prosthesis, the ion-beam technology was introduced to decrease the width of conductive wires and the distances between wires, a high density MEA (120 microelectrodes with a matrix of 10 x 12) was fabricated on a single layer of polymer from this. The MEA was proved to possess a fine electrochemical property. In vitro test, the average impedance of MEA on 1 kHz was 16 k omega +/- 2 k omega and the average phase difference was -85 degrees +/-30 degrees.
Micro-Electrical-Mechanical Systems ; Microelectrodes ; Prosthesis Design ; Visual Prosthesis

Objective To investigate the injury mechanism, clinical classification, treatment methods and clinical results of calcaneal fractures. Methods From June 2005 to May 2009, 83 feet in 70 patients with calcaneal fractures were treated. According to Sanders and Essex-Lopresti classifications, 63 feet had intra-articular fractures (30 feet of type Ⅱ, 21 type Ⅲ, and 12 type Ⅳ ) and 20 feet had extra-articular fractures (3 feet of lateral condylar fracture, 5 anterior process fracture, 9 calcaneal body fracture and 3 nodules fracture) . Reduction with a conventional lateral L-incision, mini-incision, or leverage was conducted depending on the clinical classification of the fracture involved. Fixation with a conventional plate or locking plate, simple screws and Kirschner wire was applied in all patients. Bone grafting was performed in the 20 cases whose defects were larger than 2 cm3. Functions and complications of the feet were observed at the follow-up. Results The 70 patients were followed up from 12 to 30 months (average, 18 months). The total average American Orthopaedic Foot and Ankle Society(AOFAS) score was (90.3 ± 11.0) points (48 to 100 points). The average AOFAS score for the 20 feet of extra-articular calcaneal fracture was (98.1±2.6)points (90 to 100 points), with no complications; the average AOFAS score for the other 63 feet of intra-articular calcaneal fracture was (87.8 ± 11.4) points (48 to 100 points) with such complications as necrosis at the skin edge of incision in 2 feet, sural nerve injury in 4 and traumatic subtalar arthritis in 10.Conclusions Treatment of extra-articular calcaneal fractures may have better clinical results than treatment of intra-articular calcaneal fractures. The preoperative evaluation of the fracture type and severity of soft tissue injury is especially essential to the treatment.

Objective To evaluate the thoracolumbar injury severity score [ thoracolumbar injury classifica-tion and severity score(TLICS)]and repeatability,and analyze its clinical significance in the treatment of injury of thoracolumbar.Methods The clinical and imaging data of our hospital (thoracolumbar X ray,CT examination,MRI examination) of intact thoracolumbar fractures in 90 patients were retrospectively analyzed ,respectively,TLICS score were made for their site of spinal injury morphology ,neural function and the posterior ligament complex three .Three months after reviewed ,TLICS was analyzed by using Cohen weighted kappa coefficient score .Its repeatability was ana-lyzed.Results According to the TLICS system ,spinal injury body ,nerve function and the integrity of the posterior ligamentous complex were evaluated , respectively, the repeatability coefficient of Kappa , the calculated total to 0.47 non operation group,operation group,the total score was 0.46,with a moderate consistency.The neural function evaluation of the highest high consistency ,consistency .No significant differences between the two groups of repetitive Kappa coefficient(statistical values =0.674 5,P>0.05).According to the TLICS system of statistical accuracy ,the diagnostic sensitivity,specificity ratios was 95.8%,86.4%,97.6%,respectively.Conclusion The reliability of TLICS system for thoracolumbar treatment and recovery is higher ,relative comprehensive evaluation ,which can effec-tively guide the clinical treatment .

Objective To evaluate the modified Physical and Operative Severity Score for the Enumera-tion of Mortality and Morbidity (POSSUM) in predicting the postoperative morbidity in patients with fractures of the pelvis and acetabulum. Methods The clinical data of 94 patients with pelvic and acetabular fractures were retrospectively analyzed. Their postoperative prognosis during hospital stay was evaluated with the POSSUM scoring system modified according to the features of orthopedics and pelvic and acetabular fractures. The peritoneum in-fection in the severity index of operation was replaced by operative approach, the several operations at one time by operative duration, and the cancer by the associated injury. The size and type of operation were made into 4 grades with corresponding orthopedic scores. The scores were compared between the complication group and the non-complication group. The receiver operator characteristic (ROC) curve was drawn to describe the coincidence degree, define the cut points, and evaluate its predicting capability. Results The mean preoperative physi-ological score (PS) and operative severity score (OS) in the complication group (38 cases) were significantly higher than those in the noncomptication (56 cases) (17.26 ± 2.84 vs 16.04 ± 2.77; 19.50 ± 5. 14 vs 13.00 ±3.81 ) ( P ＜ 0.05) . In the modified POSSUM, the area under ROC curve was 0. 856, the cut point 43%, sen-sitivity 73.68%, specificity 80. 36%, and coincidence degree 77.66%. Conclusions Since the modified POSSUM scoring system has a high capability of predicting postoperative morbidity for fractures of the pelvis and acetabulum, it can be helpful for surgeons to lower operative risks and ensure safety in operation. When the score is higher than the cut point, the risk is too great for an operation. Therefore, the fracture should be treated non-operatively or mini-invasively until the score is lower than the cut point.