Objective To study the change of angiotensin Ⅱ in the applications of pumpless ECMO, and its effect on prognosis of the acute respiratory failure. Methods The study was performed in ten dogs [ weight 18 - 35 kg, mean weight ( 23.4 ± 4.7 ) kg].A respiratory failure animal model was established end then was treated by bilateral femoral artery-venous ECMO. Collection right atriurn blood end constitution of lung at different time (before ECMO, during ECMO 1h, 2h, 3h, 4h). Angiotensin Ⅱ content in blood and lung homogenate was detected by radio-immunity mothod. Angiotensin Ⅱ expression loci in lung were detected by immunohistochemistry mothod. Results Angiotensin Ⅱ content in plasma was decreased at completion of the model, it was back up at 1 hour and reached the peak at 3 hours, then it slowly declined. Angiotensin Ⅱ content in lung homogenate increased at the beginning, peaked by 2 hours, end then it decreased. Loci angiotensin Ⅱ in lung by immunohistochemistry were expressed in most of epithelial cells cytoplast of bronchiole dissepimont, smooth muscle cell cytoplast of small blood vessel around it end a few macrophage cytoplasts during the model time..Conclusion It is valuable to measure engiotensin Ⅱ in blood through the bilateral femoral artery-venous ECMO, because it can reflect angiotensin Ⅱ in lung and the resume of lung in certain degree.

Objective System of pressure breathing for +Gz (PBG) has been incorporated into service in the high performance fighter aircraft,but there were significant differences among PBG pressure schedules used in different countries.The purpose of this study was to define an optimal pressure schedule in PBG system.Method Five male subjects wearing GZ-2 anti-G suit and medium-sized bladder vest,plus PBG with 1.6,2.4,and 3.2 kPa/G pressure schedules,respectively,were exposed to rapid onset (3.0 G/s) centrifuge +Gz runs.+Gz protection of PBG with each of the three pressure schedules were measured and the subjective ratings were collected.Result The +Gz protection afforded by PBG with 1.60,2.40,and 3.20 kPa/G pressure schedules were 2.00±0.31,2.54±0.32,and 2.44±0.31 G,respectively.Subjective ratings showed that the PBG with 2.40 kPa/G pressure schedule was better than the other two.Conclusion Our data suggest that a PBG pressure schedule of 2.4 kPa/G in PBG system is optimal.It not only assures the anti-G performance of PBG,but also reduces its side effects.

Objective To evaluate the efficacy and safety of endoscopic submucosal dissection (ESD) with scissors knife in difficult cases.Methods A total of 36 sessions of ESD in 34 patients were performed from May 2010 to May 2012 with application of new scissors knife.The complications and followup outcomes were recorded.Results All lesions were removed successfully with an en bloc resection rate at 91.7％.Delayed bleeding occurred in 2 patients (5.6％),and both of them were cured sucessfully with endoscopy.No perforation happened and the average hospitalization time was 5 days.Follow-up endoscopy performed 6 or 12 months after ESD in 6 patients revealed no recurrence or residual lesions.Other patients are under follow-up now.Conclusion The scissors knife is easy to manipulate,which can ensure the safety and efficiency of ESD.

Objective To evaluate the value of sonourethrography in the diagnosis of dysuria after bipolar transurethral plasmakinetic prostatectomy. Methods Sixty male patients with dysuria after bipolar transurethral plasmakinetic prostatectomy underwent sonourethrography and re-operation.The clinical data of these patients were reviewed. Results The sonourethrographic findings were similar with the operative findings in 57 cases.In the 60 cases,there were 11 cases with bladder neck closure,10 cases with bladder neck stricture,30 cases with urethral stricture (16 located at membranous urethra,12 located at pars cavernosa urethra and 2 in external orifice of urethra),5 cases with prostate remnant,1 case with calculi in prostatic urethra,2 cases with dysfunction of detrusor of bladder and 1 case with flap of internal urethral orifice,Conclusions Sonourethrography could be a reliable diagnostic method for dysuria after bipolar transurethral plasmakinetic prostatectomy.It may be helpful for clinical treatment.

Objective To observe the apeptosis in liver injury following limbs ischemia-reperfusion(IR) in rats and the protective effects of taurine.Methods The model of limbs ischemia-reperfusion injury was established.30 Wistar rats were randomized into 3 groups: control group,IR group and tanrine + reperfusion group (TR group) (n = 10 for each group).The levels of malondialdehyde (MDA) and xanthineoxidas (XOD), calcium and myeloper-oxidase (MPO) in the liver tissue were measured.DNA fragmentation was observed and analyzed by agarose gel e-lectrophoresis.Apoptosis was detected by TUNEL methods.The morphologic changes were observed with HE stai-ning.Results Compared with control group,the values of MDA, XOD, MPO, calcium in liver tissue were increased significantly in IR group (P<0.01), but the values of those in TR group were lower than in IR group (P<0.01).The percentage of apeptosis cell was higher in IR group than in control group(P<0.01).Compared with IR group, the percentage of apoptosis cell was lower in TR group (P<0.01).IR group presented DNA ladder pattern, while TR group showed no specific DNA ladder pattern in agarose gel electrophoresis.Conclusion Apoptosis participates in the liver injury after limb ischemia-reperfusion.Taurine can mitigate the liver injury and apoptosis after limb is-chemia-reperfusion injury in rats.

Objective To compare the safety and short-term efficacy of thulium laser resection of the prostate (TMLRP) and bipolar transurethral plasmakinetic prostatectomy (TUPKP) for the treatment of benign prostatic hyperplasia (BPH) patients.Methods A total of 100 patients diagnosed with BPH were randomly divided into 2 groups:TMLRP group (50 cases) and TUPKP group (50 cases).There was no significant difference of preoperative variables such as age,prostate volume,PSA,IPSS,Qmax and PVR between the two groups (P＞0.05).The perioperative parameters and therapeutic effects were recorded and compared between the two groups.Results Comparison between TMLRP group and TUPKP group included:operating time ((61.2±24.2) min versus (30.1±15.9) min),catheterization time ((1.8±0.4) d versus (3.2±0.6) d)and postoperative hospital stay ((3.3±0.8) d versus (4.1±1.3) d).Significant differences in these parameters were found between the two groups(P＜0.05).Compared with TUPKP group,the blood loss and postoperative bladder irrigation were significantly less in TMLRP group.One month postoperatively,there were 4 cases of urethral stricture in TUPKP group.Three months postoperatively,IPSS,QOL,Qmax and PVR were significantly improved in both groups (P＜0.01),but no significant difference detected between the 2 groups (P＜0.05).Conclusions TMLRP is superior to TUPKP in term of safety and tolerability (decreased blood loss,complication rate and short recovery time),and as efficacious as TUPKP in efficacy.Compared with TUPKP,operating time were significantly longer in TMLRP group

Ac-Phe-Lys-PABC-DOX (PDOX) is a smart doxorubicin (DOX) prodrug designed to decrease toxicities while maintaining the potent anticancer effects of DOX. This study was aimed at elucidating the effectiveness and toxicities of DOX and PDOX in patient-derived MCF-7 breast cancer cells in vitro. The MCF-7 cells were exposed to both PDOX and DOX, and cytotoxicities, cell cycle and P53/P21 signaling alterations were studied. Abundant cathepsin B was found in the MCF-7 cells, and treatment with PDOX and DOX triggered dose- and time-dependent cytotoxicity and resulted in a significant reduction in cell viability. The IC50 of PDOX and DOX was 3.91 and 0.94 μmol/L, respectively. Both PDOX and DOX caused an up-regulation of the P53/P21-related signal pathway, and PDOX significantly increased expression of P53 and caspase 3, and arrested the cell cycle at the G1/G2 phase. As compared with DOX, PDOX reduced toxicities, and it may have different action mechanisms on breast cancer cells.

OBJECTIVE: To observe the therapeutic effect of electroacupuncture (EA) at Zusanli (ST 36) and Neiguan (PC 6) on stress responses of patients undergoing gastrointestinal surgery. METHODS: A total of 40 patients undergoing gastrointestinal surgery were randomized into conventional treatment group (control) and EA group (n＝20 in each group). Patients of the EA group received conventional treatment (pre- and post-surgical fasting, measures for gastrointestinal decompression, parenteral nutrition support, and patient controlled analgesia pump, etc.) and EA stimulation (2 Hz, 30 min) of bilateral ST 36 and PC 6 (twice after surgery, at an interval of 6 h), and patients of the control group received conventional treatment only. The visual analogue scale (VAS) score was used to assess the patients' pain severity and the blood glucose levels were detected once every 4－6 h within 24 h after operation. Serum cortisol (Cort) and adrenocorticotropic hormone (ACTH) levels were detected by chemiluminescence method, and serum D-lactic acid level (for assessing gastrointestinal mucosal injury) was assayed by ELISA. RESULTS: After the treatment, the levels of serum Cort, ACTH, D-lactate acid and the highest blood glucose were significantly lower in the EA group than those in the control group (P<0.05, P<0.01), suggesting a reduction of stress reactions after EA. But no significant difference was found between the control and EA groups in the VAS score (P>0.05). CONCLUSION: EA at ST 36 and PC 6 can alleviate stress responses and reduce intestinal mucosal damage in patients undergoing gastrointestinal surgery.

12E7 Antigen ; Antigens, CD ; metabolism ; Bone Neoplasms ; metabolism ; pathology ; surgery ; Cell Adhesion Molecules ; metabolism ; Chondrosarcoma, Mesenchymal ; metabolism ; pathology ; surgery ; Diagnosis, Differential ; Hemangiopericytoma ; pathology ; Humans ; Lung Neoplasms ; metabolism ; pathology ; surgery ; Male ; Middle Aged ; Pneumonectomy ; methods

Objective To quantitatively detect circulating DNA levels in the plasma of patients withcervical lesion and to determine the value for diagnosis of cervical lesion and cervical cancer . Methods Preoperative blood samples were collected from 53 cases of low-grade lesions, 49 cases of high-grade lesions, 44 cases of cervical invasive cancer and 70 cases of healthy women. Plasma DNA was extracted by magnetic bead method (BILATEST DNA kit). The quantity of plasma DNA was determined by duplex real-time quantitative PCR. Results Median plasma DNA level of invasive cervical cancer patients was 61. 59 mg/L (32. 06 - 162. 16 mg/L) , which was significantly higher than that of healthy women [16. 35 mg/L(11. 98 -22.71 mg/L), P < 0.01]. Among invasive cervical cancer patients, median plasma DNA level of squamous carcinoma patients was slightly higher than that of adenocarcinoma (50. 43 versus 47. 31 mg/L,P>0. 05). Median plasma DNA level of stage I patients was lower than that of stage Ⅱ- Ⅲ patients (46. 02 versus 71. 35 mg/L, P <0. 05). Conclusion Quantitatively detecting plasma circulating DNA may be with some application prospect in the diagnosis of cervical diseases.