Actins ; metabolism ; Adult ; Antigens, CD34 ; metabolism ; Diagnosis, Differential ; Female ; Follow-Up Studies ; Humans ; Hypertension ; etiology ; Juxtaglomerular Apparatus ; pathology ; surgery ; ultrastructure ; Kidney Neoplasms ; complications ; metabolism ; pathology ; surgery ; ultrastructure ; Nephrectomy ; Vimentin ; metabolism

Objective To enrich pancreatic cancer stem cells through culturing mammospheres, and to detect the expressions of epidermal growth factor receptor(EGFR) and a disintegrin and metalloprotease 9 (ADAM9) and investigate their significance. Methods PANC1 cells were cultured in serum-free conditioned medium to continuously generate mammospheres, and parts of mammospheres were cultured on a collagen substratum to induce differentiation. Mammospheres cells and differentiated cells were collected, flow cytometry was used to detect the proportion of side population (SP) cells, and the expressions of EGFR, ADAM9 mRNA and protein were detected by real-time PCR and Western blotting. Results PANC1 cells mammospheres were successfully generated and could be passed continuously. After differentiation, mammospheres cells could regain the ability of adherent growth. The proportion SP cells in mammospheres cells and differentiated cells were ( 5.40 ± 0.38 ) % and (2.80 ± 0.42 ) %, and the difference was statistically significant ( P ＜ 0. 05 ).Compared with differentiated cells, the expression of EGFR and ADAM9 mRNA of mammospheres cells upregulated 2.5 and 3.0 folds ( P ＜ 0. 05 ). The expressions of EGFR and ADAM9 protein of mammospheres cells were 0.90 ± 0. 09 and 0.64 ± 0.07, which were significantly higher than those in differentiated cells (0.62 ±0.11 and 0.48 ±0.09, P ＜0.05). Conclusions Mammosphere cells contained higher proportion of pancreatic cancer stem cells. ADAM 9 may play an important role in the occurrence and development of pancreatic cancer through the EGFR signaling pathway.

Issues on basic medical English teaching,curriculum and the construction ne-cessity for teaching material were analyzed and discussed.The corresponding strategy toward these issues in our university and the progress we have made were reported.

Objective To investigate the feasible clinical teaching method for ICU specialty nurses to improve teaching quality.Methods Using new mode:teaching together but practicing with different teachers.Results Through clinical practice,19 specialty nurses have improved their theories,operational skills and clinical thinking abilities.Conlusions ICU specialty nurses can acquire systems training through the new teaching mode.

Objective To observe the change of ornithine decarboxylase(ODC) activity in cells from adult Schistosoma japonicum after the cells were treated with N\|Methyl\|N\|Nitro\|N\|Nitrosoguanidine (MNNG). Methods The cells were treated with MNNG at a concentration of 3 ?g/ml for 48 hours after the cells being incubated for one week. The cells were then cultured with RPMI\|1640 containing 10% calf serum. ODC activity was detected with spectrophotography. Results ODC activity rose significantly in two to three weeks after the cells were treated with MNNG. Conclusion There was ODC activity in cells from adult S.japonicum and MNNG has an effect to reinforce ODC activity in the cells.

Back ; Follow-Up Studies ; Humans ; Lymphoma, Follicular ; metabolism ; pathology ; Male ; Middle Aged ; Neprilysin ; metabolism ; Proto-Oncogene Proteins c-bcl-6 ; metabolism ; Receptors, Complement 3d ; metabolism ; Skin Neoplasms ; metabolism ; pathology

Acquired Immunodeficiency Syndrome ; drug therapy ; epidemiology ; Antiretroviral Therapy, Highly Active ; adverse effects ; methods ; China ; epidemiology ; Female ; HIV Infections ; drug therapy ; epidemiology ; Humans ; Male ; Minority Groups

Background and purpose. Gastric stromal tumor (GST) is the most common mesenchymal tumor of the gastrointestinal tract and most often arises in the stomach. In the past, surgery was the only effective treatment. The diagnosis and treatment of GST has been revolutionized over the past, since expression of the receptor tyrosine kinase KIT (CD117) was shown to occur on these tumors, the outcome of GST treatment has dramatically been improved. This study focused on the therapeutic experience of GST and analyzed the pathological features and prognostic factors of GST in our center. Methods: All the 26 cases underwent surgical resection and three of them were treated over 6 months with imatinib 400 mg/d. The clinical pathological and follow-up data of 26 patients with GST admitted in our hospital between Jan. 2000 and Dec. 2008 were analyzed retrospectively. Results. All the cases underwent curative resections, including palliative liver resection in 3 patients with liver metastasis. Recurrence occured on 6 patients, including 1 case with low risk group, 1 case with intermediate risk group, 4 cases with high risk group. Tumor size ranged from 2 to 15 cm with the mean of 5.5 cm. The immunohistochemistry results revealed that the positive rates of CD117, CD34 and Vimentin were 92.3%, 80.8% and 96.2% respectively. After operation, three patients accepted imatinib mesylate therapy over 6 months. Two of them were alive, but one had liver metastasis. The follow-up period ranged from 4 to 36 months (median: 28 months). Four cases were lost. The 1-, 3-year overall survival rates of 26 cases were 96.2% and 84.6%. Conclusion: Tumor size, location, mitosis and immunohistochemical data are important variables to evaluate GST behavior and prognosis. Surgical resection is the main therapy for GST and targeted therapy will improve the prognosis.

Rapid species identification of Mycobacterium tuberculosis by rpoB gene micro array.Based on the gene micro array of rpoB,the standard strains of 21 mycobacteria and 8 non-mycobacteria,126 clinical isolated of mycobacteria were detected by PCR-reverse dot blot hybridization assay.360bp DNA fragment was amplified from all mycobacteria tested and was not found in all nonmycobacteria except Hemolytic streptococcus and Corynebacterium pseudodiphtheriticum.The result of specimens were detected by the probe which is composed of 21 oligonucleotide was that probe-Mycobacterium fortuitum cross hybridizated with Mycobacterium platypoecilus while the other probes were specific.The 89 strains of the all 126 strains isolated from clinical specimens were identified to be mycobacterium tuberculosis,the percentage was 70.6%(89/126),while the other 9 strains were identified to be unmycobacterium tuberculosis and the the percentage was 9.2%(9/98).Identification of Mycobacteria by rpoB gene micro array is a rapid and effective method which is of considerable value in clinical territory.

Objective To study the techniques of the treatment for epidermoid with endoscope-as- sisted microneurosurgery.Methods The suboccipital,infratemporal transtentorial approach and endoscope- assisted microneurosurgery were used.Results Total resection was achieved in 10 cases,and subtotal resec- tion was made only in 2, and had no complications of all.Conclusion Endoscope-assisted microneuro- surgery can increase the total-resection rate for tumors,and reduce complications.