Objective In order to study the effects of three drainage methods after operation of breast cancer. Methods We demonstrated the drainage reliability of the negative pressure bottles by measuring their negative pressures.We reviewed the incidence of flap dropsy of 103 patients with breast cancer operated from 1988 to 2001.Results Negative pressure of the bottle made by ourselves is 83.33 kPa at the room temperature and 74.12 kPa after 200ml fluid being drained. The incidence of skin flap dropsy of the negative pressure bottle is significantly lower than those in another two groups.Conclusion The negative pressure bottle is reliable, convenient and applicable in all levels of hospital.

Objective To construct a recombinant interfering RNA(miRNA)plasmid vector targeting annexinA3 and observe its impact on the growth and apoptosis of human gallbladder cancer cell line SGC-996.Methods Four small fragments of miRNA and one negative control were sequenced and cloned into vector pcDNATM 6.2-GW/EmGFPmiR.The recombinant plasmids were then transfected into gallbladder cancer cell line SGC-996 by positive liposomal transfection.The transcription and translation level of annexinA3 expression were detected by RT-PCR and Western Blot.Meanwhile, the proliferation and apoptosis of transfected tumor cells were determined by MTT and flow cytometry.Results The recombinant plasmids containing annexinA3 miRNA were successfully constructed.AnnexinA3 expression was significantly knocked down after miRNA plasmid transfection.Transfection of annexinA3 gene miRNA could effectively inhibit the proliferation of gallbladder cancer cell and promote apoptosis.Conclusion AnnexinA3 gene silenced by miRNA can induce the apoptosis of human gallbladder cancer cell line SGC-996.The process might serve as a potential approach for cancer gene therapy.

Objective To evaluate endovascular treatment of segmental occlusive Budd-Chiari syndrome(BCS). Methods We retrospectively analyzed the clinical data of segmental occlusive BCS of 45 cases. Inferior vena cava (IVC) puncture, percutaneons transluminal angioplasty (PTA) and stent implant were performed, respectively. Three-dimensional digital subtraction angiography (3D-DSA) was used to evaluate the IVC lesion from multi-angles and to identify the best work angle in complex BCS cases during endovascular treatment. Results IVC puncture and dilation was successful in 43 cases. The pressure of IVC decreased from (35. 3 ± 3.9)cm H2O to (9.5 ± 2. 0) cm H2O (t = 43. 68, P < 0. 01). The puncture failed in 2 cases and the patients were converted to veno-atrial graft shunt. Acute pericardial tamponade developed during PTA in one case. Postoperatively 35 cases were followed-up for 3 months to 46 months and the follow-up rate was 77. 8%. IVC stent thrombosis was identified in one case necessitating veno-atrial graft shunt 15 months post-operatively. There were no stent migration and hepatic venous obstruction in the remaining cases. The case of pericardial tamponade was cured and discharged after IVC repair. Symptoms disappeared except for intercostal neuralgia during 6 months follow-up. There were no pulmonary embolism and death. Conclusions Good medium and long term result could be achieved after endovascular treatment of segmental occlusive BCS. 3D-DSA is helpful for endovascular treatment of BCS.

Objective To explore the characteristics of endothelial progenitor cells (EPCs) on different scaffolds and to find a new bio-engineered synthetic hybrid scaffold for artificial bio-engineered blood vessels. Methods EPCs were induced from mesenchymal stem cells isolated from rat bone marrow and seeded on ECM scaffold. The surface structure of the scaffold and growth status of EPCs on the scaffold were observed and analysed by electron microscopy. The characteristics and number of those EPCs on different kinds of scaffolds were studied with EPC-specific VWF by immunofluorescence, Western blotting and real-time PCR technique at different time points. Results The cell adhesion rate at 1,3,5 h after seeded on pressed scaffold were higher than that on unpressed scaffolds( P < 0. 01 ). Pressed scaffolds has got a larger cell number( P < 0. 05 )at DIV1, DIV3, DIV7, but there was no significant difference after DIV10. Furthermore, cell shapes of EPCs on pressed scaffolds were more mature and more similar to endothelial cells. A level cell surface on pressed scaffolds was achieved. Western blotting assays revealed EPCs on pressed scaffolds expressed more protein VWF at DIV3, DIV7, DIV10. Real-time PCR results showed EPCs on the two different groups of scaffolds all expressed VWF gene, The quantity of their expression in the two groups were all enhanced after DIV7 (P < 0. 05 ). The quantity of VWF gene expression in the pressed group was much higher than that in the unpressed group at DIV3 ,DIV7,DIV10 (P <0, 01), but there was no significant difference after DIV14. Conclusions Pressed ECM scaffolds can promote adhesion, proliferation and differentiation on EPCs. Pressed scaffolds can be used as the matrix for EPC and fabricated into a novel synthetic tissue bio-engineered vascular scaffold.

Objective To explore the safety and clinical effects of laparosepie splenectomy.Methods Clinical data of 24 cages of laparoscopic splenectomy in our hospital from 2002 to 2008 were retrospectively analvzed.Among these 24 cases,there were 6 cases with liver cirrhosis,10 cases with ITP,2 cases with hemolytic anemia(Evens syndmm),2 cases with spelenic rupture,and 4 cases optimum spleen ambuty.Results All the 24 cases were successfully underwent laparoscopic splenectomy.The mean operation time wag 146 minute.the mean volume of blood loss was 220 ml.the postoperative gastrointestinal peristalsis time Was from 24 to 48 hours.The mean hospitalization time was 9 days after operation.Conclusions Provided mastering operation indication and technique,Laparoscopie spleneetomy is a safe and minimally invasive surgery.

Objective To explore the incidence and factors of paranasal sinusitis among nasopharyngeal carcinoma (NPC) patients after radiotherapy. Methods Retrospectively evaluated the clinical data of 144 NPC patients without paranasal sinusitis before radiotherapy, including 82 cases in T1/T2 stage and 62 cases in T3/T4 stage treated in the First Affiliated Hospital of Bengbu Medical College from 2000 to 2005. MRI images before and after radiotherapy were compared. The incidence and factors of paranasal sinusitis were analyzed. There were 58 cases of nasal invasion. Nasopharyngeal carcinoma was given at face-neck joint portal with 6 MV X-ray fractionated irradiation 68-78 Gy during 6-8 weeks. The number of patients who received radiotherapy with less than or equal to 70 Gy, more than 70 Gy radiation doses were 89 and 55, respectively. Cervical part were treated with high-energy electron beam, patients with positive neck lymph nodes and with negative neck lymph nodes received 64-74 Gy doses during 6-8 weeks and 50-54 Gy during 4-5 weeks, respectively. Results Among the 144 NPC patients 86.8%(125/144) developed paranasal sinusitis after radiotherapy, the incidence rates of paranasal sinusitis (IRPS) was higher among stage T3 + T4 patients than that among stage T1 + T2 patients (94% vs 82% ,x2=4.32, P ＜0.05). Among patients who were given radiotherapy with more than 70 Gy,less than or equal to 70 Gy radiation doses on the nasopharynx, the IRPS were 95% and 82.0% (x2 = 4.65, P ＜ 0.05 ). The IRPS in patients with nasal cavity infringement was higher than that in others (95% vs. 81% , x2 = 5.46,P ＜0.05). The IRPS at 3, 6, 12 months, and more than 1 year after radiotherapy were 13.6% ,31.2% ,48.8% and 6.4%, respectively (x2 = 70.48, P ＜ 0.001 ). Conclusions The incidence of paranasal sinusitis in NPC patients after radiotherapy was very high, and reached a peak in one year. It was influeneed by invasion of nasal cavity or not, the dose of radiotherapy and T stage.

Objective To evaluate endovascular treatment of Budd-Chiari syndrome(BCS)with occlusion of hepatic veins.Methods Retrospective analysis on the clinical materials of 32 BCS cases with occlusion of hepatic veins was made.Four cases received inferior vena cava(IVC)angioplasty or stent implant and splenorenal shunt;Transfemoral vein or transjugular hepatic vein angioplasty was performed in 10 cases,and percutaneous transhepatic recanalization combined with transjugular and/or transfemoral vein angioplasty of hepatic veins was performed in 16 cases,respectively.Two cases failed therapy attempt.Results A failure to find the main hepatic vein in percutaneous transhepatic venography lead to the abandent of therapy in 2 cases.Hepatic vein angioplasty and IVC angioplasty was successful in the other 30 cases.The pressure of hepatic vein decreased from(43±8)cm H_2O to(16±4)cm H_2O(t=21.23,P<0.01).The symptoms were obviously relieved,ascites disappeared,abdominal distension palliated,chest and abdominal wall varicose veins collapsed one week after endovascular treatment.During perioperative procedure,2 cases with liver puncture bleeding were cured by laparotomy.The follow-up duration was 5 months to 65 months and mean(26.0±2.0)months.There was no stent migration and hepatic vein restenosis and occlusion.Chest and abdominal wall varicose veins disappeared and esophagus phlebeurysma were ameliorated as shown by esophageal barium series.There were no pulmonary embolism and death.Conclusions The procedure of endovascular treatment of BCS with occlusion of hepatic veins is simple,mini-traumatic and effective.

Objective To introduce a new and practical method of treating blepharoptosis with direct suspension of the frontal muscle-fascia improvement. Methods 22 cases of blepharoptosis were corrected by direct suspension of the frontal muscle-fascia in which the dynamia still came from frontal muscle.Through double-fold eyelid incision, the frontal muscle-fascia was dissected from the subcutaneous tissue and a 1.5 cm length incision of the frontal muscle-fascia was cut under the supraorbital margin. And through the incision, the frontal muscle-fascia on the superficies of periosteum was dissected 1.5 cm to the upper margin of orbital, and then the frontal muscle-fascia was pulled down and fixed to the levator muscle aponeurosis directly by mattress sutures, with the tension being adjusted to a moderate degree. Results 22 cases of blepharoptosis were cured by primary healing with this method. The patients were followed up for 3 to 6 months with satisfactory results and no recurrence. Conclusion Compared with the traditional methods,this one may decrease the damage to the upper lid and frontalis area, leaving no risk of damaging the vessels or nerves. The technique is simple and the curative effect is affirmed. It can be used to treat any blepharoptosis patient with normal frontal muscle function.

Objective To reveal the relationship between a certain ratio of the length to width of a slender narrow pedicle and random flap in survival area with an experimental study. Methods 25 pigs were randomly divided into 5 groups. The ratio of length to width of slender narrow pedicle in 5 groups was different and every ratio's slender narrow pedicle was carrying 5 different sizes of random flaps. In each group, these 5 flaps were created randomly in each pigs' bilateral back. The flaps were evaluated with the general observation, fluorescence examination, blood flow ECT test, and computerized analysis of survival area. Results When the ratio of the length to width of the slender narrow pedicle was constant, along with the flap area increased, the flap survival area also increased, but when the flap reached a certain area, the distal flap would develop necrosis, the flap survival area would not reduce; when the flap size remained unchanged, along with the ratio of the length to width of the slender narrow pedicle increased, the flap survival area was not affected, but, when the ratio of the length to width of the slender narrow pedicle increased to a certain limit, distal flap would lead to necrosis, and the flap survival area would reduce. Conclusion The slender narrow pedicle flap is a new and practical random flap. The pedicle of random flap can be designed as slender shape, and the ratio of pedicle width to flap length is far less than traditional ratio. Increasing the flap size or ratio of the length to width of a slender narrow pedicle in a certain extent will not lead to flap necrosis.

Objective To discuss a new method of interventional and surgical therapy for the lower extremity postthrombotic syndrome (PTS). Methods 35 PTS cases were enrolled in our group. Dilation and stent placement in stenosis of iliac veins were performed in all cases, then temporary femoral arteriovenous fistula was established. After two weeks, 15 cases with varicosity underwent high ligation of the great saphenous vein and stripping, 5 cases with leg ulcers (ulcers diameter>3 cm) underwent skingrafting. After operation, patients took warfarin orally for 6 months and wear elastic compression stockings. Results Procedures were successful in all cases. Thrombectomy extracted only a few old thrombus. Before discharge, limb swelling subsided in 26 cases while 4 remain light swelling and 5 had no obviously relief. Twenty-six cases were followed-up for 3～24 monthes. Limb swelling subsided in 22 cases but still exist in 4. Limb ulcers were healed in 11 cases and the area of pigmentation were diminished. Limb ulcer recurred 12 months after skingrafting and healed finaly after perforator veins clipping with second skingrafting. Color Doppler was used in follow-up to check the potency of affected deep veins, good outcome was found in 20 cases and rough intima with stenosis of iliac veins was found in 2, no flow signal in 4. Conclusions Stenosis of iliac veins in PTS are common, the pathological changes could be treated by interveional method combined with temporary arteriovenous fistula. The degree of recanalization of femoral-popliteal veins determined the results.