Accidents, Occupational ; mortality ; Animals ; Cause of Death ; Humans ; Male ; Nitriles ; poisoning ; Rats

Objective To construct the recombinant of hepatocellular carcinoma-targeting adenovirus containing r-Caspase-3 gene and provide the gene therapic strategy for hepatocellular carcinoma. Methods The pAdTrack-EAFP-PALB was constructed and the r-Caspase-3 gene was subcloned into the vector. The linearized shuttle plasmid was homogenously recombined with AdEasy-1 in BJ5183 cells. The candidate clone was analyzed by restriction endonuclease digestion and sequencing, and then pAdEasy-EAFP-PALB/r-Caspase-3 vector was digested with PacⅠand transfected into AD293 cells for packaging and amplifying, recombinant virus was constructed successfully. Infection titer and efficiency of recombinant virus were monitored by green fluorescent protein (GFP) expression. The expression of r-Caspase-3 in infected HepG2 cells was detected by RT-PCR and Western blot. The apoptosis of HepG2 cells was detected by SRB dyeing method. Results Shuttle vector pAdTrack-EAFP-PALB/r-Caspase-3 was correct after identification by restriction endonuclease analysis and sequencing. By PCR and PacⅠ restriction endonuclease analysis, the homologous recombinant of pAdEasy-EAFP-PALB/r-Caspase-3 was successful. The expression of GFP was observed when linearized pAdEasy-EAFP-PALB/r-Caspase-3 was transfected into AD293 cells. AD293 cells could be infected repeatedly by recombinant adenovirus. The expression of r-Caspase-3 gene on HepG2 cells was detected by RT-PCR and Western-blot methods respectively, which confirmed that the Ad-EAFP-PALB/r-Caspase-3 was constructed successfully. The specificity of Ad-EAFP-PALB/r-caspase-3 which targeting induced hepatocellular carcinoma cells was founded by SRB dyeing test. Conclusion The Recombinant of hepatocellular carcinoma-targeting adenovirus containing r-Caspase-3 gene was constructed successfully and which established the foundation of r-Caspase-3 gene therapy in future research to hepatocellular carcinoma.

Objective To investigate the expression of Ki-67 in bladder transitional cell carcinoma and its relationship with grade and stage. Methods Immunohistochemistry method were used to detect the expression of Ki-67 in bladder transitional cell carcinoma and control groups. Results The positive expression rate of Ki-67 antigen in 60 cases of bladder cancer, 20 cases of benign bladder disease and 10 cases normal bladder mucosa were 25.9 %, 10.3 % and 1.1 %. There were significantly difference among each group. The more grade and stage, the greater expression of Ki-67 antigen. Conclusion Ki-67 antigen is related to cell proliferation. The expression of the Ki-67 antigen in bladder cancer is closely related to the grade extent of tumor, and it is an important cell proliferation indicator. As a signal, Ki-67 antigen reflects cell proliferation, measurement of the expression of the Ki-67 antigen could reflect the condition of tumor cell proliferation. It might be an important prognostic factor for judging the occurrence, development and prognosis of the tumor.

Objective To explore the technique and effect of selected three-field lymphadenectomy by left thoracotomy in treatment of thoracic middle or lower section esophageal squamous carcinoma. Methods From Jun. 2005 to Mar. 2009, 213 patients with thoracic middle or lower section of esophageal carcinoma received esophagectomy, bilateral mediastinal lymphadenectomy and pleural membrane resection.Group 1 -5, 7 - 12a, 16al, and 19 were performed to dissect abdominal lymph node and extended thoracic and abdominal lymphadenectomy and only lymph node extraction of mesoesophagus in neck field. Results 14197 lymphatic nodes(LN) were detected in 213 case. The average number of resected LN was 66. 65 ±24. 73. The metastatic lymph node was detected in 105 cases. The metastatic rate was 49.05% (105/213).There were 423 metastatic lymph nodes. The lymph nodes metastasis was 2. 97% (423/14197) of all dissected lymphatic nodes. No remnant carcinoma in the upper and lower cutting edge was found in pathological examination. The operation time ranged from 2. 92 ～ 4. 67 ( 3. 37 ± 0. 42) hours. Blood transfusion during perioperative period was 0 ～ 6u ( 1.08 ± 0. 93 ) u. Perioperative plasma transfusion was 0 ～ 1400( 103.77 ± 184. 89) ml. The hospital-time was 14 ～ 39 ( 17.64 ±4. 12) days. There were no anastomotic leakage and recurrent laryngeal nerve injury. One case died from respiratory failure, the mortality was 0. 04% ( 1/213). Conclusion Surgical approach in the management of left thoracotomy in the sixth intercostals could extend resection of chest-field lymph node dissection, decrease neck field lymph node dissection. Abdomen-field lymph node dissection reached selected D3. The selected lymphadenectomy procedure had the advantages of small traumas and few complications.

The esophageal cancer mouse models have three categories:chemical carcinogenesis model,xenograft tumor model and genetic engineering model.Chemical carcinogenesis model can simulate well the pathological processes of human esophageal cancer and is prepared simply.Xenograft tumor model is currently the most commonly used esophageal cancer animal model,which has advantages of rapid tumor formation,higher tumor formation rate and lower cost.Genetic engineering model involves mainly p53,Cyclin D1,Brca1 and p120ctn,and it helps to understand the biological characteristics of tumors,but it is expensive and the preparation time is long.

Adult ; Cardiac Catheterization ; Female ; Heart Septal Defects ; therapy ; Humans

Radiotherapy is one of the most important treatment method for esophageal cancer. Cene expression profile of cancer cells may be one of key factors in determining the effectiveness of radiation therapy To provide guidance for individual therapy, research advances in gene expression involved in radiosensitivity of esophageal cancer are discussed from three aspects: radiation damage repair, cell cycle distribution and signal traneduetion.

Objective To explore the applicability of the abbreviated Chinese version of the social problem-solving inventory (C-SPSI) for nursing students in Shanghai. Methods The abbreviated C-SPSI was revised and 603 nursing students in Shanghai were surveyed by it, and the reliability and con-struct validity were evaluated by inter-item consistency analysis, test-retest reliability and principal factor analysis. Results The total CVI was 0.968. The construct validity was confirmed by factor analysis with 64.917% variance explained by four factors. The total Cronbach's α of C-SPSI was 0.897,and the total test-retest reliability coefficient was 0.781. Conclusions The abbreviated C-SPSI is an instrument with good reliability and validity and it can be used in assessing the nursing students' social problem-solving abilities and deficits.

OBJECTIVE: To determine the content of netilmicin sulfate in serum by a high performance liquid chromatography-indirect photometric determination (HPLC-IPD) method. METHOD: The chromatographic system consisted of Soheisorb C18 column and mobile phase of a solution of methyl alcohol-a buffer of phosphoric acid (pH=2.0) (20∶80), that contained 0.5 mmolL-1 of nicotinamide and 0.3 mmolL-1 of sodium seventhalkyl-sulphonate. The detected wave length was 268 nm. The serum simple of 4 patients was determined. RESULTS: The mean recovery of was 93.41% and detection limits was 50 μgL-1. CONCLUSION: The method is constant, sensitive, and has a good concentration. It is good for determination of netilmicin sulfate concentration in serum.

OBJECTIVE To evaluate the application of antibiotics and its trend for reference to clinical utilization.METHODS The data about antibiotics used from 2005 to 2007 were collected and analyzed.RESULTS The consumption of antibiotics was fallen year by year.The rate of utilization was 67%.The rate of drug combination was 45% and the rate of antibiotic resistance test was 20%.CONCLUSIONS There are still a lot of problems in antibiotics usage of our hospital.It is necessary to strengthen the guidance and supervision.