Objective To establish osteosarcoma vaccine by the LM9 osteosarcoma derived from C3h mice hybridized with activated B lymphocytes and study its biological behavior and the antitumor efficacy. Methods The LM9 osteosarcoma derived from C3h mice was fused with LPS activated B lymphocytes by using 50%PEG. The fused cells was selected by HAT medium and cultured in vitro, and the biocharacter and efficacy of the fusion vaccine were investigated. Results In contrast to LM8, the fused cells grew significantly slowly in vitro. All the mice under the protection of fused vaccine survived without tumor (8/8), while all the mice in the control group succumbed to the tumor with no survival (8/8), 75%of the mice inoculated subcutaneously with cell fusion vaccine survived without tumor burden after implantation of LM8 cells subcutaneously. The mice in the control group developed tumors and died within 45 days without any exception. Conclusion It is possible that the LM9 osteosarcoma biology characteristics change after fused with LPS activated B lymphocytes. Cell fusion osteosarcoma vaccine could produce prophylactic and therapeutic effects in mice.

Objective: To observe the influence of electroacupuncture with different frequencies on rats swimming endurance and sift out the optimal frequency parameter.Methods: Wistar rats were randomly allocated to control group, non-acupoint group and electroacupuncture with low frequency group (EA with 2 Hz group), electroacupuncture with medium frequency group (EA with 15 Hz group), and electroacupuncture with high frequency group (EA with 100 Hz group), acupoints Zusanli (ST 36) and Taichong (LR 3) were punctured and rats load swimming time was used as an index, and the change of swimming endurance time before and after acupuncture was observed. Results: After electro-acupuncture, swimming time was increased in 15 Hz and 100 Hz groups respectively, with the significant differences between before and after acupuncture (P＜0.05). There was also a significant difference in the percentage of increase in swimming time between 15 Hz group and other groups (P＜0.05).Conclusion: It is suggested that electroacupuncture at acupoints Zusanli (ST 36) and Taichong (LR 3) with a frequency of 15 Hz could enhance rats's swimming endurance, and 15 Hz might be an optimal frequency parameter during the electrical stimulation.

Objective To investigate the effect of Glutamine (Gln) on heat stress-induced dysfunction of intestinal epithelial barrier. Methods Human intestinal epithelial Caco-2 cells were pre-incubated with Gln for 24h and then exposed to heat 43℃ for 1h. Cell counting kit-8 (CCK-8) was used to detect the cellular proliferation with various concentrations of Gln and choose an optimum concentration for subsequent experiments. The barrier integrity was measured by transepithelial electrical resistance (TEER) and horseradish peroxidase (HRP) permeability. Levels of tight junction protein occludin and ZO-1 were analyzed by Western blotting. Cytoskeleton using Coomassie blue staining was observed by microscopy. Results At 0.7mmol/L concentration, Gln showed the most effective cell proliferation compared with other concentration groups (P<0.05). Therefore, 0.7mmol/L Gln was used as effective concentration in following experiments. Gln attenuated the TEER decrease and impairment of intestinal permeability induced by heat exposure compared with 43℃ group (P<0.01). The expressions of occludin and ZO-1 were significantly elevated by pretreatment with Gln. The distortion of cytoskeleton was also effectively prevented. Conclusion 0.7mmol/L Gln is potentially beneficial for protecting against heat stress-induced permeability dysfunction and epithelial barrier damage.

OBJECTIVE: To investigate the significance and relationship between the expression of FOXC1 and clinicopathological features, and to explore its correlation with E-cadherin. METHOD: Immunohistochemical SP method was used to detected the expression of FOXC1 in nasopharyngeal carcinoma tissues and nasopharyngitis tissues. RESULT: (1) Immunoreaction to FOXC1 was mainly located in nucleus of nasopharyngeal carcinoma cells. The positive expression rate of FOXC1 in nasopharyngeal carcinoma tissues was 85.3% (81/95), which was significantly higher than that in nasopharyngitis tissues (59.4%) (P < 0.05). (2) The expression of FOXC1 was not related to patients' age and gender, clinical stage of cancer and lymph node metastasis (P > 0.05). (3) There was a correlation between the expression of FOXC1 and down-regulated expression of E-cadherin in nasopharyngeal carcinoma tissues (P < 0.05). CONCLUSION FOXC1 may play an important role in generation and progression of nasopharyngeal carcinoma, there may be a correlation between the expression of FOXC1 and down-regulated expression of E-cadherin, also FOXC1 may play an important role in the process of EMT in nasopharyngeal carcinoma by regulating E-cadherin.
Adolescent ; Adult ; Aged ; Antigens, CD ; Cadherins ; metabolism ; Carcinoma ; Female ; Forkhead Transcription Factors ; metabolism ; Humans ; Male ; Middle Aged ; Nasopharyngeal Carcinoma ; Nasopharyngeal Neoplasms ; metabolism ; pathology ; Nasopharyngitis ; metabolism ; Young Adult

Objective To discuss the technique of laparoscopie radical cystectomy with Studer orthotopic ileal neobladder. Methods Eight men with bladder cancer who were indicated for radical surgery underwent laparoscopic cysteetomy with Studer orthotopic ileal neobladder. The ages were be-tween 51 and 69 with the mean age was 57 years. Seven cases were transitional cell carcinoma and 1 case was adenocarcinoma. A 5-port approach was employed. The first step was the bilateral pevic lymphadenectomiy including obturator lymph nodes, internal and external iliac lymph nodes. Then ventral surface of the bladder was mobilized and the bilateral endopelvic fascia was incised. Next step included the stich of dorsal vein complex and dissection of both the vas deferens and seminal vesicles. Denonvillier's fascia was incised to develop the plane between the rectum and the prostate. The urethra located in the prostatic apex was divided and transected thereby completely separating the specimen. Then the specimen was placed in a packet. Finally, a 6-8 cm lower median abdominal incision was performed, through which the specimen was extracted. Construction of the Studer pouch. A portion of terminal ileum about 45cm long was isolated approximately 20cm proximal to the ileocecal valve. The ends of the isolated ileal segment were closed to restore the bowel continuity. The distal 40 cm segment of ileum was placed in a U shape and opened along the antimesenteric border. The two medial borders were then oversewn and the bottom was folded over to form a neobladder. The ureters were anastomosed to the nonineised 5 cm portion of ileum. Finally, the neobladder was put into the abdomi-nal cavity and the anastomosis between the neck of the neobladder and the end of the remaining ure-theral was performed with interrupted suture. Results All the procedures were successful. The time of the operation was 6-8 h with the mean estimated blood loss 420(200-800)ml. Complication included 1 case of right ureteral indigitation in neobladder. The postoperative histopathology revealed 7 cases of pT2 and 1 cases of pT3. No positive margin was found. The follow-up (3 - 12 months) showed no recurrence. Conclusions The technique of laparoseopic radical cystectomy is feasible with the advantages of smaller incision and less blood loss. Studer orthotopic ileal neobladder has the ad-vantages of simple skill, antireflux, better postoperative urination.

BACKGROUND: Following renal transplantation, native renal pelvic or ureteral tumor occurs not only on one side, but also on both sides simultaneously or continuously.OBJECTIVE: To describe a new procedure in managing native renal pelvic or ureteral tumor, in which, retroperitoneal laparoscopic nephroureterectomy was first done followed by transurethral resection of ureteral orifice, and finally the kidney and the complete ureter with a bladder cuff were taken out through a midline abdomen incision, and to validate its feasibility.DESIGN, TIME AND SETTING: A technique modification experiment was performed at the Department of Urinary Surgery, Third Hospital, Peking University between July 2004 and March 2006.PARTICIPANTS: Eight patients (7 males and 1 female) with native renal pelvic or ureteral tumor who received laparoscopic nephroureterectomy with bladder cuff resection were included into this study. Of them, 4 cases had bilateral lesions. Laparoscopic nephroureterectomy with bladder cuff resection was conducted 12 times totally.METHODS: Retroperitoneal laparoscopic nephroureterectomy was first done in the lateral decubitus, followed by transurethral resection of the ureteral orifice with resectoscope in the lithotomy position, and finally, an incision was created in the lower midline abdomen to allow dissection of the distal ureter and bladder cuff and intact specimen extraction. Postoperatively, intravesical chemotherapy was routinely performed to prevent tumor recurrence. The patients were followed up at 3, 6, and 12 months after surgery, and once a year thereafter.MAIN OUTCOME MEASURES: Surgery time, blood loss volume, pathological report, tumor recurrence time, tumor-free survival time, and complications.RESULTS: The mean surgery time was 3.8 hours (range: 2.5-7 hours). The mean hemorrhage volume was 240 mL (range: 50-1 200 mL). Two cases needed blood transfusion, 600 and 1 000 mL, respectively. Transitional cell carcinoma grade Ⅲ was found in 3 cases, grade Ⅱ in 4 cases, and grade Ⅰ-Ⅱ in 4 cases. In addition, there was 1 case presenting with tumor breaking through the serous membrane of the ureter and 1 case suffering from poorly differentiated adenocarcinoma. The tumor recurred locally in one case 6 months after surgery, and the remaining cases all survived in a tumor-free state.CONCLUSION: After renal transplantation, laparoscopic nephroureterectomy with bladder cuff resection through a lower midline abdomen incision is feasible for treatment of native renal pelvic or ureteral tumor, with low tumor recurrence rate and satisfactory excision effects.

control group from the high to the low. When the typeⅢand type Ⅳglomerular function was changed (BUN and BCr in high value),the drainage quantity of the enzymes evidently increased.Conclusions Urine enzyme series can sensitively reflect the damage of renal tubules in early stage, even if BUN and BCr value is on the normal level , and the drainage quantity of these enzymes are changed more or less, which show that renal tubule damage exists. The value of BUN and BCr is positively correlated with the drainage quantity of these enzymes.the more urine enzymes are drained out, the more renal tubule function is involved, therefore, the more renal globe function is damaged.

Objective To investigate the effect of intraocular injection of mixed crystalline in vivo on survival of retinal ganglion cells(RGCs)after optic nerve cut.Methods Twenty Long-Evens rats were divided into normal control,and 7 day,14 day,and 21 day groups after optic nerve was cut off.There were 5 eyes in each group.Mixed crystallin(1x10~(-4)g/L)and isotonic saline solution were injected into the vitreous of fight eye and left eye respectively.The number of RGCs was counted 7,14 and 21 days after optic nerve cut.Results The density of RGCs declined clearly 7 days after optic nerve cut.In the group with crystallin injection,the density of RGCs declined to 71%,32% and 15% of the control group repec- tively,much higher than that of the controls on days 7,14 and 21 after optic nerve was cut off(P

The essential medium of B115 composed of 1% tryptone, 0.25% yeast extract and 0.5% sodium chloride was determined by using an orthogonal design. The orthogonal design was also employed in testing the optimum additions. It was composed of 0.1%(NH_(4))_(2)SO_(4),1.4%K_(2)HPO_(4), 0.6% KH_(2)PO_(4) and 0.1% (Na_(3)C_(6)H_(5)O_(7)). The yield of B115 cultured in optimum medium was compared with the one in essential medium. Statistic analysis showed that the growth of B115 was most significantly improved by adding K~(+)、NH~+_(4) and (Na_(3)C_(6)H_(5)O_(7)) to essential medium. The antibacterial effect of Bacillus subtilis strain B115 on pathogenic Aeromonas was studied. The results showed different antibacterial effects of B115 on different aeromonads. There were obvious antibacterial effects on BSK-10 and CL990920, while no effect on the growth of TL970424.

OBJECTIVE To investigate the HIV infections states in tumor patients for clinical diagnosis,treatment and to prevent HIV infection in the tumor hospital.METHODS The result of HIV detection in tumor patients from Dec 2000 to Aug 2006 was analyzed by the review statistics analysis.RESULTS Totally 48 101 tumor paients were detected,and the number of tumor patients with positive HIV antibody result was 51(0.106%).Among the positive patients there were 21 cases with blood transfusion history,14 cases with blood donating experience,2 cases with both these two kinds of experiences and 14 cases without the two kinds of experiences.Their rate was separately 41.0%,27.5%,4.0% and 27.5%.Most of the HIV positive patients had no clinical synptoms.CONCLUSIONS The HIV positive rate of patients with blood transfusion or blood donating is significantly higher than the patients without these experiences.The routine detection for the HIV before the operation,blood transfusion or other traumatic detection is very necessary.